Honeywell AC 140 7 Thermostat User Manual

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February 2008  
P/N 32-0228  
REV . B  
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS  
FOR  
FP-4 FREEZE PROTECTION KIT  
P/N 83-0763  
FOR TURBO-COOL AFTERCOOLERS  
MODELS AC-140-7 thru AC-220-7  
(230V-3PH-60Hz & 460V-3PH-60Hz)  
WARNING  
BEFORE STARTING INSTALLATION OR MAINTENANCE PROCEDURES, TURN OFF ELECTRICAL POWER AND  
COMPLETELY DEPRESSURIZE THE AFTERCOOLER. FAILURE TO HEED THIS WARNING MAY RESULT IN SERIOUS  
PERSONAL INJURY AND/OR DAMAGE TO THE UNIT.  
NEVER REMOVE, REPAIR, OR REPLACE ANY ITEM ON THE AFTERCOOLER WHILE IT IS PRESSURIZED.  
WHEN INSTALLING THIS KIT, ALWAYS COMPLY WITH THE NATIONAL ELECTRICAL CODE AND ALL OTHER  
APPLICABLE FEDERAL, STATE AND LOCAL CODES.  
SECTION 1  
INTRODUCTION  
1.1DESCRIPTIONOFOPERATION  
The FP-4 freeze protection kit is designed to prevent aftercooler freeze up when the ambient temperature is near or below  
o
o
freezing, 32 F (0 C).  
The FP-4 has a two stage solid state temperature controller. The controller is mounted inside a Nema 4 enclosure. The  
controller is used to energize a control relay which is rated to handle the load of the aftercooler fan at the various voltages.  
The linear platinum temperature sensor and  
thermowell mount into the piping between the  
outlet manifold of the aftercooler and the  
FIGURE 1-A ITEMS INCLUDED WITH THIS KIT  
separator. When the temperature of the com-  
pressed air system at the aftercooler outlet falls  
O
to 35 F, the controller will automatically turn off of  
o
the fan. The controller is set for a 10 F dead  
band to prevent rapid cycling (fan will turn off at  
O o  
5 F and on at 45 F).  
3
A 12 foot heat tape and 30 feet of insulation wrap  
are provided to wrap around the separator. The  
heat tape is equipped with its own internal  
temperature control. The heat tape and insula-  
tion will provide additional freeze up protection.  
1
.2 THIS KIT INCLUDES:  
1.  
2.  
3.  
4.  
5.  
6.  
7.  
8.  
9.  
Control box  
12'long heat tape, w/ thermostat  
30'long roll of insulation wrap  
Copper 1/2" NPT thermowell w/clip  
Cord grip connector  
Linear platinum sensor  
2'of 3/8" flexible conduit  
Three (3) seal fittings for connectors  
3/8" conduit straight connector  
1
0. 3/8" 90 degree elbow connector  
1. 1" x 1/2" NPT bushing  
2. Four (4) #12-14 x 1" self tapping screws  
3. Heat Condictive Compound  
1
1
1
PAGE 1  
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SECTION 2  
INSTALLATION  
2
.1MOUNTINGTHECONTROLBOX  
The control box should be mounted near the  
outlet manifold of the aftercooler. Make sure  
that the control box is close enough so that all  
components can reach the box when in-  
stalled.  
FIGURE 2-A MOUNTING THE CONTROL BOX  
Drill the four pilot holes in the mounting  
surface using a 1/8" drill. Reference Figure 2-  
A for dimensions.  
The control box will be mounted with the  
hinged side of the enclosure on the bottom.  
Fasten the controller in place using the four  
(4) #12-14 x 1" long self-tapping screws  
supplied with the kit.  
2.2 INSTALLING THE SENSOR AND  
THERMOWELL  
A 1/2" NPT or larger connection in the system  
piping between the outlet of the aftercooler  
and the inlet of the separator is required for  
the thermowell and sensor.  
FIGURE 2-B MOUNTING THE THERMOWELL  
Thread the thermowell and the 1" x 1/2"  
bushing (if required) into a connection  
between the aftercooler outlet and the  
separator.  
Place some heat conductive compound into  
the thermowell. Place the sensor into the  
thermowell and fasten it in place using the  
clip supplied with the thermowell. Reference  
Figure 2-B.  
Install the cord grip connector into the control  
box as shown in Figure 2-B. Push the sensor  
cable through the connector. Wire the sensor  
cable to the controller circuit board terminals  
as shown in Figure 2-F. Tighten the grip nut  
on the connector.  
2.3 INSTALLING THE HEAT TAPE AND  
INSULATION  
Install the cord grip on the control box as  
FIGURE 2-C INSTALLING THE HEAT TAPE AND INSULATION  
shown in Figure 2-C.  
Cut the plug end off the heat tape. Strip back  
the wires.  
Push the wire end of the heat tape through  
the connector. Allow enough cord inside the  
box for wiring. Connect the heat tape to the  
proper terminals in the control box as shown  
in FIGURES 2-F. Tighten the grip nut on the  
connector.  
Run the heat tape to the separator. Wrap the  
heat tape around the separator as shown in  
Figure 2-C. Do not overlap the tape.  
Wrap the insulation around the piping and  
heat tape as shown in Figure 2-C.  
PAGE 2  
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SECTION 2  
INSTALLATION  
2
.4 INSTALLING THE CONDUIT  
Install the straight conduit connector  
on the control box. Reference Figure  
FIGURE 2-D INSTALLING THE CONDUIT  
2
-D.  
The supplied conduit will be used to  
run between the aftercooler and the  
control box. Connect the conduit to  
the straight connector.  
Install the 90 degree elbow connector  
on the aftercooler. Reference Figure  
2
-D.  
2.5 INSTALLING THE TRANSFORMER JUMPERS  
WARNING  
FIGURE 2-E INSTALLING THE TRANSFORMER JUMPERS  
BEFORE STARTING THIS PROCEDURE, TURN OFF  
ELECTRICAL POWER. FAILURE TO HEED THIS  
WARNING MAY RESULT IN SERIOUS PERSONAL  
INJURY AND/OR DAMAGE TO THE UNIT.  
This kit was designed to operate at 230V-3PH-60Hz or  
460V-3PH-60Hz. Two jumpers were shipped inside the  
control box. They must be installed on the transformer  
before connecting the power to the control box. Install the  
jumper(s) as shown in Figure 2-E for the desired voltage.  
CAUTION  
It is important that this procedure be properly  
completed before continuing with installation.  
This kit will not operate without the jumpers.  
Damage to the control box will occur if the jumpers  
are improperly installed.  
2.6 ELECTRICALCONNECTIONS  
conduit to the connector on the aftercooler. Reference  
FIGURE 2-D.  
WARNING  
BEFORE STARTING INSTALLATION PROCEDURES  
OR ATTEMPTING TO MAKE ANY WIRING CHANGES,  
TURN OFF ELECTRICAL POWER. FAILURE TO HEED  
THIS WARNING MAY RESULT IN SERIOUS  
Make the wire connections at the junction box on the  
aftercooler. Reference FIGURE 2-F. Fasten the junction box  
cover to the aftercooler.  
PERSONAL INJURY AND/OR DAMAGE TO THE UNIT.  
Complete the wire connections inside the controller as  
shown in FIGURE 2-F.  
WHEN INSTALLING THIS KIT ALWAYS COMPLY WITH  
THE NATIONAL ELECTRICAL CODE AND ALL OTHER  
APPLICABLE FEDERAL, STATE AND LOCAL CODES.  
Once all wiring connections have been properly made, the  
rotation of the fan should be checked. The fan must rotate in  
the proper direction for maximum performance. Reference  
the operator's manual supplied with the aftercooler for the  
correct rotation direction. Also, check the aftercooler for a  
rotation direction label.  
A 7/8" hole in the top right side of the control box is provided  
for incoming power conduit. The hole can be enlarged if  
necessary.  
The control box is designed for 230V-3PH-60Hz or 460V-  
3
PH-60Hz operation. The transformer jumpers must be  
To check the rotation, turn on the power supply to the  
aftercooler. If the fan does not rotate in the proper direction,  
any two of the power leads to the motor can be switched.  
installed as outlined in Section 2.5 for the desired voltage.  
Make the necessary wiring runs and connections for the  
main power supply.  
Remove the junction box cover on the aftercooler for access  
to the junction box. Make the necessary wiring runs through  
the conduit from the aftercooler to the control box. Fasten the  
PAGE 3  
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SECTION 2  
INSTALLATION  
FIGURE 2-F CONTROL BOX COMPONENT LAYOUT and WIRING DIAGRAM  
IMPORTANT  
THE FAN MOTOR MUST ROTATE IN THE CORRECT DIRECTION. REFERENCE THE AFTERCOOLER  
OPERATOR'S MANUAL FOR PROPER ROATION DIRECTION. IF IT DOES NOT, THE ROTATION CAN BE  
CORRECTED BY SWITCHING TWO OF THE POWER LEADS TO THE MOTOR.  
PAGE 4  
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SECTION 2  
INSTALLATION  
2
.7 SETTING THE CONTROLLER  
The controller was factory set for normal operation. The  
FIGURE 2-G CONTROLLER DISPLAY  
factory settings are as follows:  
RELAY 1  
O
SET POINT  
DIFFERENTIAL  
MODE  
35 F  
O
10 F  
COOLING  
Turn on the main power to the FP-4 control.  
If the settings have been changed, set them to the factory  
settings following the procedures below . The controller will  
retain the setting if the power is disconnected.  
PROGRAMMING PROCEDURES  
1. Press MENU key, then press RIGHT arrow key three  
times. Use the UP and DOWN arrow to select the  
SETPOINT. Press the RIGHT arrow to store the setpoint in  
memory.  
2. Press the RIGHT arrow to set the DIFFERENTIAL. Use  
the UP and DOWN arrow to set the differential. Press the  
RIGHT arrow to store the differential in memory.  
3. Press the RIGHT arrow key to set the HEATING / COOL-  
ING mode. Use the UP or DOWN arrow to select the  
desired mode. Press the RIGHT arrow to store the mode in  
memory.  
4. Press RIGHT arrow three times to exit the program mode.  
SECTION 3  
OPERATION  
3
.1 OPERATION  
FIGURE 3-A OPERATION SEQUENCE  
Once the kit is installed and set properly, just energize the  
controller and it will operate automatically.  
The controller will turn off half of the aftercooler fan when the  
temperature of system air at the outlet of the aftercooler falls  
O
to 35 F. The fan will turn on when the system temperature  
o
rises to 45 F. Reference chart in Figure 3-A .  
The heat tape is controlled by its own internal thermostat.  
Power is supplied to the heat tape as long as the control box  
is energized.  
The temperature controller is equipped with a LCD display.  
During normal operation when the fan are operating,  
(temperature above set points) the sensor temperature and  
RELAYS 1 ON will be displayed on the controller.  
NOTE: The cover on the control box must be opened to view  
the temperature controller display.  
PAGE 5  
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SECTION 4  
TROUBLESHOOTING  
4.1 TROUBLESHOOTING PROCEDURES  
SOLUTIONS  
PROBLEM  
. Aftercooler fan motor  
POSSIBLE CAUSES  
1
Controller not set properly  
Check the controller settings as outlined in Section 2.7. The  
controller may be set in the heat mode or the set points set too  
low. Set the controller to the recommended settings.  
continues to operate,  
system temperature  
O
below 35 F.  
Control relay faulty  
Check the control relay. Replace if faulty.  
Check main electrical power source.  
2. Aftercooler fan motor  
No power to the control box  
No power to the controller  
not operating, system  
temperature above  
Check the transformer. Make sure that the jumpers on the  
transformer are properly installed. Reference Section 2.5.  
Check the fuses on the transformer.  
O
4
5 F.  
Controller not set properly  
Controller failure  
Check the controller settings as outlined in Section 2.7. The  
controller may be set in the heat mode or the set points set too  
high. Set the controller to the recommended settings.  
Check the controller settings. If the controller is properly set, check  
the main power source.  
Check the controller display for error codes. Section 4.2 outlines  
what the error codes indicate and the necessary steps.  
Sensor failure  
If the sensor is faulty a "--" will be displayed for the temperature on the  
controller display. Refer to Section 4.2 for further details. If the  
sensor is faulty, it must be replaced.  
Control relay faulty  
Check the control power at the relay coil. Check the relay for proper  
operation. Replace if faulty.  
4.2 CONTROLLER ERROR CODES  
The controller display panel is used to display error codes in the event of problems with the controller. The four error codes  
are listed below.  
-
- -SENSOR FAILURE  
The "--" displayed for the temperature indicates that there is a problem with the sensor. The sensor is open or shorted.  
All relays will be de-energized in the event of a sensor failure. If the sensor is damaged, it must be replaced.  
EE-EEPROM FAILURE  
The "EE" error code indicates that there is a problem with EEPROM. The values read back from the EEPROM are not  
the same as what was written into the EEPROM. This error cannot be field repaired. The controller must be replaced.  
-
60°F or 270°F (-51°C or 132°C) Blinking - TEMPERATURE OUT OF RANGE  
The temperature display blinks when the sensed temperature is outside of the display range, below -60°F (-51°C) or  
above 270°F (132°C). The displayed value remains at the display limit and the controller continues to function unless  
an open or shorted condition is detected.  
BLINKINGRELAYSTATUS  
This occurs when the Relay Minimum Off Time is active. The (ñ ) blinks while the relay's minimum off time is active.  
PAGE 6  
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SECTION 5  
REPLACEMENT PARTS  
5.1 REPLACEMENT PARTS  
ITEM NO.  
DESCRIPTION  
QTY  
PART NO.  
1
2
3
4
5
6
7
8
9
12'LONG HEAT TAPE  
30'ROLL OF INSULATION WRAP  
1/2" NPT THERMOWELL w/CLIP  
CORD GRIP CONNECTOR  
SENSOR  
1
1
1
2
1
2 FT  
3
1
1
1
4
1
1
1
1
2
2
2
26-8151  
26-0712  
29-0325  
26-5618  
26-7186  
26-0875  
26-0883  
26-1068  
26-1078  
14-0402  
28-1286  
26-7185  
26-0919  
26-5637  
26-5336  
26-5638  
26-0380  
26-0382  
26-0384  
26-0388  
26-0686  
26-5663  
3/8" FLEXIBLE CONDUIT  
SEAL FITTING FOR CONNECTOR  
3/8" CONDUIT STRAIGHT CONNECTOR  
O
3/8" 90 ELBOW CONDUIT CONNECTOR  
1
1
1
1
1
1
1
1
1
2
2
2
2
1
2
3
4
5
6
7
8
9
0
1
2
3
1" X 1/2" NPT BUSHING  
#12-14 x 1" SELF TAPPING SCREW  
TEMPERATURE CONTROLLER  
MOTOR RELAY  
TRANSFORMER  
1 AMP FUSE  
.6 AMP FUSE  
GRAY TERMINAL  
YELLOW TERMINAL  
GREEN TERMINAL  
END CLAMP TERMINAL  
JUMPER FOR TERMINAL  
JUMPER FOR TRANSFORMER  
2
2
2
2
PAGE 7  
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SECTION 6  
WARRANTY  
PER VAN AIR TERMS AND CONDITIONS OF SALE  
YOUR VAN AIR REPRESENTATIVE IS:  
NAME:  
COMPANY:  
ADDRESS:  
CITY:  
STATE:  
FAX:  
ZIP:  
PHONE:  
ATTACH BUSINESS CARD HERE  
2950 Mechanic Street  
Lake City, PA 16423 USA  
Phone: 800/840-9906  
Service Fax: 814/774-0778  
Order Entry Fax: 814/774-3482  
www.vanairsystems.com  
MAKING COMPRESSED AIR AND GAS WORK BETTER SINCE 1944.  
PAGE 8  
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T775A/B/M Series 2000 Electronic  
Stand-Alone Controllers  
INSTALLATION INSTRUCTIONS  
PRODUCT DESCRIPTION  
The T775 electronic stand-alone controllers are the next  
generation of commercial and agricultural controls  
capable of remote sensing of temperature and providing  
switched and/or proportional outputs to various types of  
loads.  
Five models have analog (modulating) outputs for  
actuator and motor control, and NEMA-4 weatherproof  
enclosures are available for wet environments.  
IMPORTANT  
Each T775A/B/M controller is an operating  
control, not a limit or safety control. If used in  
applications requiring safety or limit controls, a  
separate safety or limit control device is  
required.  
Table 1. T775A/B/M Controller Configurations.  
Analog  
(Mod)  
SPDT  
Relay  
Outputs Outputsb Outputsc Inputs Included Enclosure  
Nbr of  
Sensor Sensors  
Controller  
Modela Description  
Floating  
Replaces  
T775A1001  
T775A2009 Standard  
T775B2016 Standard  
T775B2024 Standard  
T775B2032 Standard  
T775B2040 Standard  
1
2
4
2
4
None  
None  
None  
None  
None  
None  
1
2
2
2
2
1
1
1
1
1
NEMA 1  
NEMA 4X  
NEMA 4X  
NEMA 1  
NEMA 1  
N/A  
1
2
1
2
T775C1009 T775D1008  
T775A1019 T775B1000  
T775A1027 T775A1035  
T775B1018 T775B1026  
T775B1042  
T775M2006 Modulating  
N/A  
None  
4
2
2
N/A  
N/A  
2
1
1
NEMA 1  
T775M2014 Modulating T775G1005 T775G1013  
T775G1021 T775G1039  
2d  
NEMA 4X  
T775M2022 Modulating  
N/A  
2
4
2
2
N/A  
N/A  
2d  
2d  
1
1
NEMA 4X  
NEMA 1  
T775M2030 Modulating T775E1114 T775F1022  
T775F1055 T775F1089  
T775M2048 Modulating T775E1015 T775E1023  
T775E1056 T775E1064  
T775E1098  
2
2
N/A  
2d  
1
NEMA 1  
a
b
c
d
All models include a digital input for use with the disable or setback option.  
The modulating (analog) outputs are 4-20 mA, 0-10 Vdc, 2-10 Vdc, or Series 90 selectable.  
Each floating output eliminates two SPDT relays.  
These models can support a high/low modulating limit at Sensor B for temperature control at Sensor A.  
E4436  
6
2-0254-03  
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T775A/B/M SERIES 2000 CONTROLLER  
PRODUCT DESCRIPTION  
Temperature Sensorsa  
The controller accepts 1,097 Ohms PTC at 77°F (25°C):  
Accessories  
•
•
•
107324A – Bulb Holder, duct insertion  
107408 – Heat Conductive Compound, 4 ounce  
50001774-001 – Immersion Well, stainless steel 304,  
/2 in. threading  
•
50021579-001 – Standard sensor (included with all  
models except NEMA 4X models)  
1
•
T775-SENS-WR – Water resistant with 5 foot leads  
(included with NEMA 4X models)  
•
•
•
T775-SENS-WT – Watertight with 6 foot lead  
T775-SENS-OAT – Outdoor air temperature sensor  
C7031D2003 – 5 inch immersion sensor with wiring  
box (use immersion well; P/N 50001774-001)  
C7031J2009 – 12 foot duct averaging sensor with  
wiring box  
•
•
•
C7046D1008 – 8 inch duct probe with mounting flange  
C7100D1001 – 12 inch fast response, duct averaging  
sensor with flange  
•
C7130B1009 – Room mount sensor  
a
See form 62-0265 – Temperature Sensors for the T775  
Series 2000 Stand-alone Controller  
Controller Dimensions  
TOP  
1
(25.5)  
7/8 (22.5)  
2
15/16 (74)  
4
13/32 (112.1)  
31/32 (101)  
1/2 (12.4)  
3
LEFT  
RIGHT  
4
1/16 (103.4)  
/64 (3.8)  
1
8
5/32  
(
207.1)  
7 23/32  
(196)  
4
1/16 (103.4)  
2
13/16 (71.8)  
2
11/16 (68.1)  
FRONT VIEW  
7/8 (22.5)  
7/8 (22.5)  
7/8 (22.5)  
1
(25.5)  
BOTTOM  
M24279  
Fig. 1. T775A/B/M dimensions in inches (mm).  
62-0254–03  
2
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BEFORE INSTALLATION  
T775A/B/M SERIES 2000 CONTROLLER  
The controller may be mounted in any orientation.  
However, mounting in the orientation shown in Fig. 1  
permits proper viewing of the LCD display and use of the  
keypad.  
BEFORE INSTALLATION  
Review the “Specifications” on page 35 before  
installing the controller.  
NEMA 4 Enclosure Mounting  
When Installing This Product  
For models with NEMA 4 enclosures, ensure that  
waterproof wire/conduit fittings are used at the knockouts  
for all wiring attachments. See Fig. 7 on page 6 for  
knockout locations.  
1.  
Read these instructions carefully. Failure to follow  
them could damage the product or cause a hazard-  
ous condition.  
2
.
Check ratings given in instructions and on the prod-  
uct to ensure the product is suitable for your appli-  
cation.  
Installer must be a trained, experienced service  
technician.  
IMPORTANT  
For NEMA 4 enclosures, be sure to cover and  
seal all unused open knockouts.  
3
.
.
4
After installation is complete, check out product  
operation as provided in these instructions.  
Temperature Sensor(s) Mounting and  
Location  
Temperature sensors may be located up to 1,000 feet  
(304 m) from the T775A/B/M controller. See Table 3 on  
page 10 for calibration guidelines.  
INSTALLATION AND SETUP  
The following installation procedures are typically  
performed in the order listed:  
The sensors may be mounted on a wall or panel for  
sensing space temperature, strapped to a pipe or inserted  
in an immersion well (see Fig. 2) for hot or cold water  
sensing, or taped to a standard cap or bulb holder for duct  
air sensing. To prevent moisture or condensation entering  
the sensor through the lead wire holes, mount the sensor  
with the lead wires exiting the bottom of the sensor.  
1.  
2.  
3.  
4.  
5.  
Mounting — see “Mounting” below.  
Wiring — see “Wiring” on this page.  
Checkout — see page 10.  
Programming — see page 13.  
Scheduling (optional) — see page 30.  
NOTES:  
.
Additional topics are:  
1
The included sensor is not designed for very  
wet applications. For immersion applications,  
an immersion well is used.  
Heat conductive compound must be used in  
immersion wells.  
•
•
•
•
•
Temperature sensor calibration begins on page 10.  
Interface overview begins on page 11.  
Setup (for advanced options) begins on page 17.  
Summary menu begins on page 34.  
Troubleshooting begins on page 34.  
2
3
.
.
See “Temperature Sensors” on page 2 for this  
type of installation.  
MOUNTING  
SENSOR  
PLACED  
IN WELL  
USE HEAT  
CONDUCTIVE  
COMPOUND  
This section describes the mounting procedures for the  
controller and temperature sensor(s).  
Controller Mounting  
1
/2 NPT  
IMMERSION  
WELL  
IMPORTANT  
Avoid mounting in areas where acid fumes or  
other deteriorating vapors can attack the metal  
parts of the controller circuit board, or in areas  
where escaping gas or other explosive vapors  
are present.  
M24470  
Fig. 2. Sensor inserted in immersion well.  
NOTE: Multiple sensors may be parallel-series wired to  
sense average temperatures in large spaces.  
See Fig. 3 on page 4.  
IMPORTANT  
The controller must be mounted in a position that  
allows clearance for wiring, servicing, and  
removal.  
WIRING  
Use a screwdriver to pry out only the knockouts that you  
will use.  
All wiring must comply with applicable electrical codes  
and ordinances, or as specified on installation wiring  
diagrams. Controller wiring is terminated to the screw  
terminal blocks located inside the device.  
If mounting on DIN rail, be sure to remove the knockouts  
before mounting. See “Controller Wiring” on page 5 and  
Fig. 7 on page 6 for recommended knockout usage and  
locations. If you do not use an opened knockout be sure  
to cover it.  
The remainder of this section describes the temperature  
sensor wiring and the T775A/B/M controller wiring.  
Mount the controller on any convenient interior location  
using the four mounting holes provided on the back of the  
enclosure using #6 or #8 screws (screws are not provided  
and must be obtained separately). Use controller  
dimensions in Fig. 1 on page 2 as a guide.  
3
62-0254–03  
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T775A/B/M SERIES 2000 CONTROLLER  
WIRING  
NOTE: Each T775 controller must be wired to its own  
Wiring Connections Access  
sensor(s). However, a benefit of the T775  
controller’s accuracy is that there is no more  
than a 2°F differential between any two T775  
controllers.  
To access the wiring connections, remove the two screws  
on the left side of the enclosure and gently swing open the  
top. Be careful to not stress the ribbon cables that  
connect the keypad and LCD display to the controller  
circuit board.  
Multiple Parallel Sensors  
Multiple sensors can be parallel-series wired to sense  
average temperatures in large spaces. To maintain  
control accuracy, the number of sensors to be parallel-  
Temperature Sensor Wiring  
2
series wired must be of the n power (for example, 4, 9,  
6, etc.). See Fig. 3.  
1
CAUTION  
Electrical Shock Hazard.  
Can short equipment circuitry.  
Make sure that metal tube of sensor does not  
short against T terminals in wall-mounted case.  
SENSORS  
IMPORTANT  
Poor wiring practices can cause erratic readings  
from the sensor. Avoid the following to ensure  
proper operation:  
•
•
•
•
•
•
Do not route the temperature sensor wiring with  
building power wiring.  
Do not locate the temperature sensor wiring next  
to control contactors.  
Do not locate the temperature sensor wiring near  
electrical motors.  
Do not locate the temperature sensor wiring near  
welding equipment.  
Make sure good mechanical connections are  
made to both the sensor and the controller.  
Do not mount the sensor with the lead wire end  
pointing up in an area where condensation can  
occur.  
TO T775 CONNECTIONS (SENSOR A) OR (SENSOR B).  
M24471  
Fig. 3. Parallel-series wiring of sensors.  
Temperature Sensor Wire Type and Size  
Temperature sensors use standard AWG 18/2 unshielded  
wire. For cable runs greater than 25 feet or where  
electrical interference may be a problem, shielded cable  
is recommended. See Fig. 4.  
If any of the above conditions cannot be  
avoided, use shielded cable.  
Refer to “Temperature Sensor Calibration” on page 10 for  
wire size selection where cable runs are longer than 25  
feet.  
SHIELDED  
CABLE  
T
SENSOR A  
T
NOTE: SHIELDED CABLE MUST BE  
CONNECTED TO AN EARTH  
GROUND.  
1
T
T
SENSOR B  
HOWEVER, DO NOT GROUND  
SHIELDED CABLE AT SENSOR END.  
SHIELDED  
CABLE  
SENSOR  
NOTE: TO MINIMIZE NOISE PICKUP,  
MAKE SENSOR CONNECTION FROM  
SHIELDED CABLE AS CLOSE AS  
POSSIBLE TO SENSOR BODY.  
1
SENSOR A AND SENSOR B TERMINAL WIRING IS POLARITY INSENSITIVE.  
M24472  
Fig. 4. Sensor wiring — showing shielded cable connection to Sensor A.  
62-0254–03  
4
href="
WIRING  
T775A/B/M SERIES 2000 CONTROLLER  
See Fig. 7 on page 6 for locating the appropriate power  
input, remote sensors input, low voltage, contact closure,  
and load output terminals.  
Controller Wiring  
WARNING  
Access to the terminals can be gained through standard  
conduit knockouts (A through E in Fig. 7 on page 6)  
located around the perimeter of the enclosure:  
Electrical Shock Hazard.  
Can cause severe injury, death or property  
damage.  
•
Knockouts A and B should be used only for sensor and  
low-voltage wiring.  
Disconnect power supply before beginning wiring,  
or making wiring connections, to prevent electrical  
shock or equipment damage.  
•
Knockouts C, D, and E can be used to gain access to  
the load relay output terminals and 120/240 Vac power  
wiring.  
Controller Wiring Method  
Wire the sensors and outputs, then wire the power  
connection.  
CAUTION  
Do not use 24 Vac power to power any external  
loads if 120 Vac or 240 Vac is used to power  
the T775A/B/M controller.  
Each terminal can accommodate the following gauges of  
wire:  
•
Single wire – from 14 AWG to 22 AWG solid or  
stranded  
Multiple wires – up to two 22 AWG stranded  
CAUTION  
A separate earth ground is required.  
Equipment damage can result if the earth ground  
is not connected. See Fig. 5 and Table 2 on  
page 6.  
•
For 24, 120, or 240 Vac power connections:  
Single wire – from 14 to 18 AWG solid or stranded  
Prepare wiring for the terminal blocks, as follows:  
1
2
.
.
Strip 1/2 in. (13 mm) insulation from the conductor.  
Cut a single wire to 3/16 in. (5 mm). Insert the wire  
in the required terminal location and tighten the  
screw.  
If two or more wires are being inserted into one ter-  
minal location, twist the wires together a minimum  
of three turns before inserting them to ensure  
proper electrical contact.  
CAUTION  
Equipment Damage Hazard.  
Electrostatic discharge can short equipment  
circuitry.  
3
.
Ensure that you are properly grounded before  
handling the unit.  
4
5
.
.
Cut the twisted end of the wires to 3/16 in. (5 mm)  
before inserting them into the terminal and tighten-  
ing the screw.  
Pull on each wire in all terminals to check for good  
mechanical connection.  
1
.
STRIP 1/2 IN. (13 MM)  
FROM WIRES TO  
BE ATTACHED AT  
ONE TERMINAL.  
1
1/2 (13)  
2
.
TWIST WIRES  
W
C
+
TOGETHER WITH  
PLIERS (A MINIMUM  
OF THREE TURNS).  
2
1
2
NO HIGH VOLTAGE. CLASS 2 WIRING ONLY.  
EARTH GROUND TERMINAL MUST BE CONNECTED  
TO CONDUIT CLAMP LOCALLY.  
M24296  
Fig. 5. Earth Ground.  
3
.
CUT TWISTED END OF WIRES  
TO 3/16 IN. (5 MM) BEFORE INSERTING  
INTO TERMINAL AND TIGHTENING SCREW.  
THEN PULL ON EACH WIRE IN ALL  
TERMINALS TO CHECK FOR  
IMPORTANT  
Poor wiring practices can cause erratic readings  
from the sensor. To ensure proper operation,  
ensure that good mechanical connections are  
made to both the sensor and the controller.  
GOOD MECHANICAL CONNECTION.  
M24473  
Fig. 6. Attaching two or more wires at terminal blocks.  
IMPORTANT  
When wiring the input power, only one source of  
power can be applied to the T775A/B/M control-  
ler (24 Vac or 120 Vac or 240 Vac).  
5
62-0254–03  
href="
T775A/B/M SERIES 2000 CONTROLLER  
WIRING APPLICATIONS (EXAMPLES)  
Table 2. Description of Wiring  
Terminal Connections. (Continued)  
Controller Wiring Details  
The wiring connection terminals are shown in Fig. 7 and  
are described in Table 2.  
Connection  
Terminal Label  
Input  
Description  
See Fig. 8 – Fig. 20 beginning on page 6 for typical  
T775A/B/M wiring applications.  
DI  
+ -  
Digital Input (dry  
contact)  
24 Vac Power  
KNOCKOUT A  
2
4V +  
+
24 Vac Hot  
Common  
Ground  
C
24 Vac Common  
Earth Groundb  
T
SENSOR A  
B
R
T
MOD 1  
–
+
1
2
W
T
T
SENSOR B  
120 or 240 Vac Power  
B
MOD 2  
R
–
+
1
20 Vac  
120  
120 Vac Power  
Common  
W
Common  
240 Vac  
COM  
240  
–
+
DIGITAL  
INPUT  
240 Vac Power  
a
For Series 90 connections, you must insert a 340 Ohm  
resistor across terminals R and W. See Fig. 17 on  
page 8. The resistor is included with the controller.  
KNOCKOUT B  
b
A separate earth ground is required for all installations  
regardless of the power source (24, 120, or 240 Vac).  
See Fig. 5 on page 5.  
POWER  
3
C
+
2
4 VAC  
OUTPUT  
RELAY 3  
OUTPUT  
RELAY 4  
POWER  
NC  
C
NO  
NC  
C
NO  
120/240 VAC WIRING APPLICATIONS  
(
EXAMPLES)  
OUTPUT  
RELAY 2  
OUTPUT  
RELAY 1  
NO  
C
NC  
NO  
C
NC  
Fig. 8 – 20 illustrate typical controller wiring for various  
applications.  
KNOCKOUT C  
KNOCKOUT D  
SENSOR A  
KNOCKOUT E  
T
T
1
2
SENSORS A AND B USE THE TWO TT CONNECTIONS AND ARE  
POLARITY INSENSITIVE.  
FOR MOD 1 AND MOD 2 CURRENT (mA) OR VOLTAGE (VDC) OUTPUT,  
USE SIGNAL (+) & COMMON (-).  
FOR MOD 1 AND MOD 2 SERIES 90 OUTPUT, USE W, R, & B.  
3
A SEPARATE EARTH GROUND IS REQUIRED FOR ANY POWER  
SOURCE (24, 120, OR 240 VAC).  
M24474  
L1  
HOT)  
Fig. 7. T775A/B/M terminal and feature locations.  
(
2
4 VAC  
NOTE: Refer to Table 1 on page 1 for the specific con-  
figuration of sensors and outputs supported by  
the model you are installing.  
L2  
C
+
NOTE: For NEMA 4 enclosures, use waterproof fittings  
for wiring/conduit connections at knockouts.  
LOAD 1  
LOAD 2  
NO  
COM  
Table 2. Description of Wiring  
Terminal Connections.  
NO  
C
NO  
C
NC  
NC  
Connection  
Terminal Label  
Sensors  
Description  
COM  
NO  
Sensor A  
Sensor B  
Temperature Sensor;  
polarity insensitive  
T T  
M24475A  
Fig. 8. Wiring for two-stage control – 24 Vac input and  
4 Vac load.  
Outputs  
2
Relay 1  
Relay 2  
Relay 3  
Relay 4  
NO  
COM  
NC  
120-240 Vac Relay  
Output  
Mod 1  
Mod 2  
+
- (Vdc or mA)  
W R B (Series 90)a  
Modulating Output  
62-0254–03  
6
href="
WIRING APPLICATIONS (EXAMPLES)  
T775A/B/M SERIES 2000 CONTROLLER  
SENSOR A  
SENSOR A  
T
T
T
T
L1  
HOT)  
(
2
4 VAC  
L2  
C
+
C
+
120V  
COM  
1
LOAD  
4
NC  
C
NO  
NC  
C
NO  
NC  
C
NO  
NC  
C
NO  
COM  
NO  
LOAD  
3
COM  
NO  
NO  
COM  
LOAD  
1
NO  
COM  
NO  
C
NC  
NO  
C
NC  
LOAD  
2
NO  
C
NC  
NO  
C
NC  
LOAD  
2
COM  
NO  
LOAD 1  
LOAD 4  
COM  
NO  
LOAD  
3
M24476A  
1
FOR 240 VAC LOAD, CONNECT TO 240 TERMINAL.  
M24478A  
Fig. 9. Wiring for four-stage control – 24 Vac input  
and 24 Vac load.  
Fig. 11. Wiring for four-stage control with 120 or 240  
Vac (120 Vac input and 120 Vac load shown).  
SENSOR A  
1
20/240 VAC LINE  
T
T
2
DEVICE  
1
NO  
NO  
C
NC  
NO  
C
NC  
COM  
OPEN  
COM  
BARCODE  
CLOSE  
COM  
NO  
1
2
CLOSE RELAY TO DRIVE DEVICE OPEN. RELAY 1 SHOWN.  
RELAYS 1 AND 3 ARE USED FOR OPEN).  
(
CLOSE RELAY TO DRIVE DEVICE CLOSED. RELAY 2 SHOWN.  
RELAYS 2 AND 4 ARE USED FOR CLOSE).  
(
C
+
1
20V  
THE RELAYS MUST BE WIRED IN PAIRS WITH RELAYS 1 AND 2  
COM  
BEING THE FIRST PAIR, AND RELAYS 3 AND 4 BEING THE SECOND PAIR.  
1
M24479  
L1 (HOT)  
L2  
POWER SUPPLY  
Fig. 12. Wiring for floating output (Relay 1 and Relay 2  
pair shown).  
NO  
COM  
NO  
C
NO  
C
NO  
LOAD 2  
NC  
NC  
COM  
LOAD 1  
1
FOR 240 VAC LOAD, CONNECT TO 240 TERMINAL.  
M24477A  
Fig. 10. Wiring for two-stage control with 120 or 240  
Vac (120 Vac input and 120 Vac load shown).  
7
62-0254–03  
href="
T775A/B/M SERIES 2000 CONTROLLER  
WIRING APPLICATIONS (EXAMPLES)  
ML7984 ACTUATOR  
T1 T2 B R W  
HONEYWELL ELECTRONIC  
SERIES 90 MODUTROL MOTOR  
1
T1 T2 B R W  
POWER  
OUTPUT  
2
POWER  
OUTPUT  
1
B
R
–
+
2
W
B
MODULATING OUTPUT  
TERMINAL (MOD 1)  
B
R
–
+
R
–
+
3
W
W
MODULATING  
OUTPUT  
B
R
W
–
+
TERMINAL  
(MOD 1)  
1
2
USE SEPARATE TRANSFORMER FOR T775R WHEN USING 24 VAC.  
250 OHM RESISTOR  
M24480  
Fig. 13. Wiring for ML7984 valve actuator.  
1
TO VERIFY OUTPUT, TEST OPEN CIRCUIT VOLTAGE BETWEEN  
THE MOD 1 TERMINALS W AND R.  
-
-
MINIMUM (DRIVE CLOSED) SIGNAL LESS THAN 0.17 VDC  
MAXIMUM (DRIVE OPEN) SIGNAL IS GREATER THAN 1.7 VDC  
2
3
USE SEPARATE TRANSFORMER FOR T775R WHEN USING 24 VAC.  
INSERT 340 OHM RESISTOR (INCLUDED) ACROSS TERMINALS R AND W.  
M24484  
Fig. 17. Wiring for Series 90 Modutrol Motor Control.  
DIGITAL  
INPUT  
–
+
HONEYWELL  
ELECTRONIC SERIES 90  
MODUTROL MOTOR  
MINIMUM POSITION  
POTENTIOMETER  
(Q209)  
SPDT CHANGEOVER  
(H205 OR H705)  
M24482  
Fig. 14. Wiring for Digital Input (dry contact).  
W
R
B
T1 T2 B R W  
2
HONEYWELL MODUTROL MOTOR WITH  
4
-20 mA MODULATING INPUT  
1
POWER  
OUTPUT  
T1 T2  
– +  
B
R
–
+
W
MODULATING OUTPUT  
TERMINAL (MOD 1)  
B
3
POWER  
OUTPUT  
R
–
+
W
1
B
R
–
+
W
MODULATING OUTPUT  
TERMINAL (MOD 1)  
B
1
2
USE SEPARATE TRANSFORMER FOR T775R WHEN USING 24 VAC.  
R
–
+
W
A 250 OHM RESISTOR PROVIDES 40% AUTHORITY WHEN  
USING A 150 OHM MINIMUM POSITION POTENTIOMETER.  
3
INSERT 340 OHM RESISTOR (INCLUDED) ACROSS TERMINALS R AND W.  
M24485  
1
USE SEPARATE TRANSFORMER FOR T775R WHEN USING 24 VAC.  
M24481  
Fig. 18. Wiring for changeover relay and  
minimum position potentiometer used  
with Series 90 Modutrol Motors.  
Fig. 15. Wiring for mod motor or direct coupled  
actuator with 4 to 20 mA control input.  
HONEYWELL MODUTROL MOTOR WITH  
VOLTAGE CONTROL INPUT  
T1 T2  
C R  
F
1
POWER  
OUTPUT  
B
R
–
+
W
MODULATING OUTPUT  
TERMINAL (MOD 1)  
B
R
–
+
W
1
USE SEPARATE TRANSFORMER FOR T775R WHEN USING 24 VAC.  
M24483  
Fig. 16. Wiring for mod motor or direct coupled  
actuator with 0 to 10 Vdc control input.  
62-0254–03  
8
href="
WIRING APPLICATIONS (EXAMPLES)  
T775A/B/M SERIES 2000 CONTROLLER  
1
M9184 OR M9185  
MODUTROL MOTOR  
L1  
(HOT)  
L2  
R
TR  
W
TR  
B
B
2
R –  
M9184 OR M9185  
MODUTROL MOTOR  
3
W +  
B
R
R –  
W +  
TR  
W
TR  
B
M9184 OR M9185  
MODUTROL MOTOR  
MODULATING OUTPUT  
TERMINAL (MOD 1)  
R
TR  
W
TR  
B
1
2
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.  
USE A 1300 OHM RESISTOR FOR TWO MOTORS, 910 OHM RESISTOR FOR THREE MOTORS.  
THE 407EAU RESISTOR KIT, WHICH IS SHIPPED WITH THE M9184 AND M9185 MOTORS,  
INCLUDES BOTH RESISTORS.  
3
INSERT 340 OHM RESISTOR (INCLUDED) ACROSS TERMINALS R AND W.  
M24486  
Fig. 19. Wiring for three Series 90 Modutrol Motors.  
L1 (HOT)  
L2  
1
4
6
MINIMUM  
M9184 OR M9185  
2
POSITION  
3
MODUTROL MOTOR  
POTENTIOMETER  
(
Q209/S963)  
R
TR  
W
R
B
W
TR  
B
B
9
R –  
W +  
M9184 OR M9185 2  
MODUTROL MOTOR  
B
R –  
W +  
R
TR  
W
TR  
–
+
5
CHANGEOVER  
CONTROLLER  
B
1
M9184 OR M9185  
2
MODUTROL MOTOR  
R
W
8
2
R
POWER  
3
TR  
24 VAC  
B
W
TR  
7
C
+
B
MODULATING OUTPUT TERMINAL (MOD 1)  
1
2
3
4
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.  
UP TO SIX SIMILAR MOTORS CAN BE CONNECTED IN UNISON.  
USE RESISTOR BETWEEN R AND B ON THE MOD 1 TERMINAL: 1300 OHMS FOR TWO MOTORS; 910 OHMS FOR THREE MOTORS (4074EAU KIT).  
IF COMMON TRANSFORMER IS USED, ALL MOTORS MUST BE IN PHASE. CONNECT THE SAME TRANSFORMER LEAD TO T1 ON EACH MOTOR,  
CONNECT THE OTHER TRANSFORMER LEAD TO T2 ON EACH MOTOR.  
5
6
USE TEMPERATURE CONTROLLER SUCH AS H205 OR H705, OR T675A FOR CHANGEOVER CONTROL.  
AUTHORITY OF MINIMUM POSITION POTENTIOMETER, IF USED, INCREASES WITH THE NUMBER OF MOTORS IN PARALLEL. WITH ONE MOTOR,  
5
0% STROKE; WITH TWO MOTORS, 100% STROKE; WITH THREE MOTORS, 100% STROKE WITH 1/3 OF FULL POTENTIOMETER ROTATION.  
7
REVERSING THE B AND W TERMINALS ON ONE OR MORE MOTORS WILL NOT AFFECT CONTROL PERFORMANCE ON THE OTHER MOTORS.  
THE SYSTEM CAN BE CONFIGURED TO HAVE SOME MOTORS BE REVERSE ACTING AND OTHER MOTORS BE DIRECT ACTING.  
8
9
USE SEPARATE TRANSFORMER FOR T775 WHEN POWERING FROM 24 VAC.  
THE SYSTEM IS SHOWN CONNECTED FOR COOLING. FOR HEATING, REVERSE THE W AND B LEADS OF THE MODULATING OUTPUT ON THE  
T775 CONTROLLER.  
M24487  
Fig. 20. Wiring for unison control of M9184 or M9185 Modutrol IV Motor using one minimum position  
potentiometer for all motors.  
9
62-0254–03  
href="
T775A/B/M SERIES 2000 CONTROLLER  
CHECKOUT  
CHECKOUT  
Table 3. Temperature Sensor Calibration for  
Resistance Loss due to Wire Length.  
Inspect all wiring connections at the controller terminals,  
and verify compliance with the installation wiring  
diagrams.  
Temperature Offset in  
°F (Foot)a  
AWG  
Rating  
mΩ/ft  
2.5  
200 ft  
0.46  
0.72  
1.16  
1.86  
2.92  
500 ft  
1.14  
1.82  
2.90  
4.64  
7.32  
1,000 ft  
2.28  
1
4
6
WARNING  
1
4.0  
3.64  
Electrical Shock Hazard.  
Can cause severe injury, death or property  
damage.  
18  
6.4  
5.82  
2
0
2
10.2  
16.1  
9.28  
Disconnect power supply before beginning wiring  
or making wiring connections, to prevent electrical  
shock or equipment damage.  
2
14.64  
Temperature Offset in  
If any wiring changes are required, first be sure to remove  
power from the controller before starting work. Pay  
particular attention to verifying the power connection (24,  
°
C (Meter)a  
200 m  
0.86  
AWG  
Rating  
mΩ/m  
8.3  
100 m  
0.44  
0.68  
1.10  
1.74  
2.74  
300 m  
1.30  
2.06  
3.28  
5.22  
8.22  
120, or 240 Vac).  
14  
After the controller is installed and wired, apply power.  
16  
13.2  
21.0  
33.5  
52.8  
1.38  
18  
2.18  
Power Loss  
20  
22  
3.48  
The date and time settings are retained for 24 hours after  
a power outage. After a power loss of more than 24 hours,  
the date and time settings may need to be reentered. All  
other settings are stored permanently.  
5.48  
a
This is the distance from the controller to the sensor  
(already accounts for round trip distance).  
Fig. 21 shows how sensor resistance varies with  
temperature for a sensor having a positive temperature  
coefficient (PTC) of 2.1 Ohms per degree F (3.85 Ohms  
per degree C).  
Temperature Sensor Calibration  
As wire length increases, resistance increases and thus  
the temperature reading increases. If necessary, calibrate  
the sensor input by reducing the value by the amount  
shown in the Table 3. For example, a wire run with 18  
gauge wire of 1,000 feet, requires a calibration offset of  
RESISTANCE (OHMS)  
1489  
-6.0°F.  
1
1
1
403  
317  
231  
IMPORTANT  
If the calibration value in the table exceeds the  
controller’s calibration limits of +/-10°F (+/-6°C),  
you must use a heavier gauge wire.  
1
145  
1059  
For example, with a wire run of 1,000 feet you  
must use 20 AWG wire or heavier in order to cal-  
ibrate for wire loss within the limits of the control-  
ler.  
1097 ± 0.08 OHMS  
AT 77°F (25°C)  
9
73  
87  
1
8
See “2.2.2.2. CALIBRATE (the sensor)” on page 18 for  
the instructions to enter the calibration value.  
801  
-
40 -20  
0
20 40 60 80 100 120 140 160 180 200 220  
250 °F  
-
40 -30 -20 -10  
0
10 20 30 40 50 60 70 80 90 100 110 120 °C  
TEMPERATURE (DEGREES)  
POSITIVE TEMPERATURE COEFFICIENT (PTC) OF 2.1 OHMS PER °F  
1
M24304  
Fig. 21. Sensor Resistance vs. Temperature.  
62-0254–03  
10  
href="
INTERFACE OVERVIEW  
T775A/B/M SERIES 2000 CONTROLLER  
Menu Button  
•
INTERFACE OVERVIEW  
Pressing the MENU button always displays the  
Program menu. If you are in Setup mode, you exit  
setup and return to the Program menu.  
Pressing and holding the MENU button for five  
seconds leaves the current screen and displays  
the Setup menu.  
The T775A/B/M controllers use an LCD panel and  
6-button keypad to provide status information and permit  
user input of the programming, setup, and scheduling  
parameters.  
•
The following figure describes the display areas of the  
LCD and the keypad.  
Left and Right Arrow Buttons (W and X  
Use these buttons to move backward (W) and forward (X)  
through the Program and Setup menus.  
)
HOME  
Up and Down Arrow Buttons (S and T)  
Use these buttons to move your selection up and down  
through a menu or list.  
RELAYS 1 2 3 4  
ON  
MENU AREA  
SENSORS  
SENSOR A  
•
•
When the desired item is highlighted, you press the X  
arrow button to display that item’s content.  
When a value is displayed (e.g. 70°F), the up and  
down arrows increase and decrease the value.  
oF  
7
8
SENSOR B  
oF  
8
4
DATA AREA  
LOCK ICON  
NOTE: Once you select an item from a list or enter a  
value, pressing the W or X or HOME button  
accepts your selection or value and stores it in  
the controller’s memory.  
MOD1  
MOD2  
DI ON  
40%  
60%  
Home Screen  
In the normal run state, the LCD home screen displays  
the current sensed temperatures, the modulating outputs  
status, the active status of the output relays, and error and  
status codes.  
home  
menu  
6
BUTTON KEYPAD  
M24488  
Active relays are indicated by the small black square („)  
just below the relay number. Fig. 23 shows the home  
screen with relays 1, 2, and 4 energized.  
Fig. 22. LCD Display - Home Screen And Keypad.  
Pressing the W and X buttons from the home screen  
cycles through each modulating output that is paired with  
the sensor it controls and the active output relays.  
Menu Area – On the home screen, the LCD displays the  
configured relays and whether they are active. In  
Program, Setup or Schedule mode, the LCD displays the  
current menu selection and its order within the menu  
hierarchy.  
HOME  
HOME  
HOME  
RELAYS 1 2 3  
ON  
RELAYS  
ON  
1
2
3
4
RELAYS  
ON  
1
2
3
4
4
Data Area – On the home screen, the LCD displays the  
sensors and outputs status. In Setup or Program mode,  
the LCD displays menu choices, parameter selections,  
and data values.  
SENSORS  
MOD 1  
40%  
REL 1  
ON  
SENSOR A  
COOL  
HEAT  
o
o
F
F
SETPOINT  
SETPOINT  
78  
o
o
o
o
F
F
F
F
SENSOR B  
74  
60  
SENSOR A  
SENSOR A  
8
4
6
2
62  
Lock Icon – The icon indicates the MENU button is  
locked and prevents access to the Setup and Program  
menus.  
RT 12345 HRS  
MOD1  
MOD2  
DI ON  
40%  
60%  
MOD1  
MOD2  
DI ON  
40%  
60%  
MOD1  
MOD2  
DI ON  
40%  
60%  
NOTE: Pressing and holding the HOME and MENU but-  
tons simultaneously for five seconds locks/  
unlocks the MENU button.  
M24489  
6-Button Keypad – The keypad is used to access the  
menus and enter values (see “Using the LCD Panel  
Interface”).  
Fig. 23. LCD Display - Home Screen Displaying  
Sensors, Active Relays, and Mod Outputs.  
Using the LCD Panel Interface  
The 6-button keypad is used to move through the menus  
and enter or change parameter values.  
NOTE: The modulating output home screen and the  
relay home screen do not dynamically update  
the active relay status, sensor values, and  
modulating output percentages. The information  
is a snapshot taken when you press the W or X  
button to display the screen.  
Home Button  
Pressing the HOME button at any time exits the current  
Programming or Setup display screen and returns to the  
home screen as shown in Fig. 22 and Fig. 23.  
IMPORTANT  
After four minutes of inactivity (no buttons  
pressed), the LCD display reverts to the home  
screen display.  
11  
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T775A/B/M SERIES 2000 CONTROLLER  
INTERFACE OVERVIEW  
Accessing the Menus  
Menus are used for programming, scheduling, viewing the  
summary settings, and setup of advanced options.  
HOME  
1 2 3 4  
RELAYS  
ON  
SETUP  
SENSORS  
SENSORS  
OUTPUTS  
EXIT  
SENSOR A  
Programming, Scheduling, and Summary Menus  
To access these menus from the home screen, press the  
MENU button. See Fig. 24.  
o
F
78  
SENSOR B  
84  
oF  
MOD1  
MOD2  
DI ON  
40%  
60%  
MENU DISPLAY WHEN  
SCHEDULING IS SET  
MENU DISPLAY WHEN  
SCHEDULING IS NOT SET  
HOME  
1 2 3 4  
RELAYS  
ON  
FIVE  
SECONDS  
home  
menu  
MENU  
MENU  
SENSORS  
PROGRAM  
SCHEDULE  
SUMMARY  
EXIT  
PROGRAM  
EXIT  
SENSOR A  
oF  
oF  
7
8
SENSOR B  
M24491  
8
4
Fig. 25. Setup Menu.  
MOD1  
MOD2  
40%  
60%  
DI ON  
Using the Menus  
When you are working with the menus, use the:  
home  
menu  
OR  
•
•
•
Left arrow button (W) to scroll backward through the  
menus  
M24490  
Right arrow button (X) to select the highlighted menu  
item and display its content  
Fig. 24. Menus.  
Up and Down arrow buttons (S and T) to scroll up  
and down through a list of items or to increase or  
decrease the value of a displayed parameter  
Depending on whether scheduling is enabled or not, the  
LCD displays one of two menus as shown in Fig. 24.  
Scheduling is enabled from the Setup menu’s Output  
settings (see “2.3.3.1. USE SCHED” on page 24).  
NOTE: If you press the HOME button or there is no key-  
pad activity for four minutes, you exit Program  
mode and return to the home screen.  
Setup Menu  
To access the Setup menu, press and hold the MENU  
button for five seconds. See Fig. 25.  
If you press the MENU button, you exit and  
return to the menu.  
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12  
1
. PROGRAMMING  
T775A/B/M SERIES 2000 CONTROLLER  
1
. PROGRAMMING  
Setpoint High Limit  
You can set a single irreversible setpoint high limit  
maximum value, which is applied to all outputs.  
The controller must be programmed before being placed  
into service.  
Adjust the setpoint (at any output) to the desired  
maximum setpoint. Then, simultaneously press the  
home, W, and X buttons and continue to press all three  
buttons for five seconds to set the setpoint high limit  
maximum to this value.  
IMPORTANT  
During programming, the controller is live at all  
times. For example, the contacts may open and  
close when adjusting the setpoint.  
NOTE: You must press all three buttons at exactly the  
same time for this action to occur.  
The Programming process uses a hierarchical menu  
structure that is easy to use. You press the W and X  
arrow buttons to move forward and backward through the  
menus.  
IMPORTANT  
1
. This action sets the maximum setpoint value of  
all outputs to the setpoint high limit maximum.  
. Setting the high limit setpoint maximum is irre-  
versible. If you perform the action inadvertently  
and this setpoint adversely affects the control of  
your system, you must replace the controller.  
NOTES:  
2
1.  
The controller interface is intuitive. You may  
find that you do not need the following proce-  
dure instructions to program the controller.  
You may want to use this procedure simply as  
a reference to locate the particular option or  
parameter of interest.  
2
.
The menus can display only those relays that  
are defined in Setup (see “2.3.2. NBR OF  
RELAYS” on page 24). For example, if you  
configure only two relays, then only two  
relays display on the appropriate menus.  
If you press the HOME button or there is no  
keypad activity for four minutes, you exit Pro-  
gram mode and return to the home screen.  
If you press the MENU button, you exit Pro-  
gram mode and return to the menu.  
3
.
.
4
Setpoint and Differential  
The following describes the relationship between setpoint  
and differential for heating and cooling. These settings are  
programmed for each output relay.  
Heating Mode Setpoint and Differential  
In heating mode, the differential is below the setpoint. The  
relay de-energizes when the temperature rises to the  
setpoint. As the temperature drops to the setpoint minus  
the differential, the relay energizes.  
Cooling Mode Setpoint and Differential  
In cooling mode, the differential is above the setpoint. The  
relay de-energizes when the temperature falls to the  
setpoint. As the temperature rises to the setpoint plus the  
differential, the relay energizes.  
1
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T775A/B/M SERIES 2000 CONTROLLER  
1. PROGRAMMING  
When programming is complete, you may continue with  
“3. Scheduling” on page 30 or, for advanced options,  
continue with “2. Setup (Advanced Options)” on page 17.  
Programming the T775A/B/M Controller  
To program the controller, perform the following  
procedures in the order listed:  
1.  
Enter Program mode — see “1.1. Entering Program  
Mode”  
2.  
Program the Outputs — see “1.2. Program Menu for  
Outputs” on page 14  
1
.1. Entering Program Mode  
MENU  
MENU  
PROGRAM  
PROGRAM  
OR  
Press the MENU button, then select PROGRAM and  
press the X button to view the Program menu.  
MENU  
PROGRAM  
MOD 1  
MOD 2  
RELAY 1  
RELAY 2  
RELAY 3  
RELAY 4  
EXIT  
RELAY 1  
RELAY 2  
RELAY 3  
RELAY 4  
EXIT  
Fig. 26 shows the Program menus for controllers with and  
without Modulating Outputs.  
NOTE: Modulating outputs are not available on the  
T775A and T775B controller models.  
M24492  
Fig. 26. Program Menu.  
MENU  
1.2. Program Menu for Outputs  
PROGRAM  
RELAY 1  
PROGRAM  
RELAY 1  
Press the MENU button, select PROGRAM, then select  
RELAY 1 (or MOD 1) to view the parameters. Fig. 27  
shows RELAY 1.  
SETPOINT  
DIFFRNTL  
SENSOR  
HEAT/COOL  
SETBACK  
EXIT  
NOTE: For MOD 1 and 2, THROT RNG replaces  
DIFFRNTL.  
NOTE: The Setback parameter displays only if schedul-  
ing is enabled (see Fig. 55 on page 24) or the DI  
Option is set to Setback. (see Fig. 57 on  
page 25).  
M24493  
Fig. 27. Program Menu Outputs.  
Continue with “1.2.1. SETPOINT”.  
MENU  
PROGRAM  
RELAY 1  
SETPOINT  
PROGRAM  
RELAY 1  
1.2.1. SETPOINT  
SETPOINT  
1
.
From the menu, use the S and T buttons to high-  
light SETPOINT.  
2
3
.
.
Press the X button to display the setpoint value.  
Use the S and T buttons to increase/decrease the  
desired setpoint temperature.  
oF  
7
0
Default: 70°F (21°C)  
Range: -40°F to 248°F (-40°C to 120°C)  
ENTER  
SETPOINT  
FOR  
4. Press the X button to accept the setpoint tempera-  
ture and display the next option.  
RELAY 1  
M24494  
Fig. 28. Program - Setpoint.  
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1
. PROGRAMMING  
T775A/B/M SERIES 2000 CONTROLLER  
MENU  
PROGRAM  
PROGRAM  
RELAY 1  
1.2.2. DIFFERENTIAL or THROTTLING RANGE  
Differential is used for Relay outputs and Throttling Range  
is used for Modulating outputs.  
RELAY 1  
DIFFRNTL  
DIFFRNTL  
1
2
3
.
.
.
From the menu, use the S and T buttons to high-  
light THROT RNG or DIFFERNTL.  
Press the X button to display the throttling range  
value.  
Use the S and T buttons to increase/decrease the  
desired value.  
Default: 20°F (-6.6°C)  
Range: 1°F to 150°F (1°C to 66°C).  
Press the X button to accept the value and display  
the next option.  
o
F
0
2
ENTER  
DIFFERENTIAL  
FOR  
RELAY 1  
M24495  
4
.
Fig. 29. Program - Differential or Throttling Range.  
In heating mode, the Differential is below the setpoint.  
The relay de-energizes when the temperature rises to the  
setpoint. As the temperature drops to the setpoint minus  
the Differential, the relay energizes.  
In cooling mode, the Differential is above the setpoint.  
The relay de-energizes when the temperature falls to the  
setpoint. As the temperature rises to the setpoint plus the  
Differential, the relay energizes.  
The Throttling Range brackets the setpoint setting, e.g., if  
the setpoint is 72°F and the throttling range is 10°F, then  
the effective throttling temperature range is 67°F to 77°F.  
This applies to both modulating outputs and floating  
outputs.  
MENU  
PROGRAM  
RELAY 1  
SENSOR  
PROGRAM  
RELAY 1  
1.2.3. SENSOR  
SENSOR  
1. From the menu, use the S and T buttons to high-  
light SENSOR.  
SENSOR A  
SENSOR B  
2
3
4
.
.
.
Press the X button to display the sensor selections.  
Use the S and T buttons to select Sensor A or B.  
Press the X button to accept the highlighted sensor  
and display the next option.  
SELECT  
SENSOR FOR  
RELAY 1  
M24496  
Fig. 30. Program - Sensor.  
MENU  
PROGRAM  
RELAY 1  
HEAT/COOL  
PROGRAM  
RELAY 1  
1.2.4. HEAT/COOL  
HEAT/COOL  
1. From the menu, use the S and T buttons to high-  
light HEAT/COOL.  
Default: HEAT  
HEAT  
COOL  
2
.
Press the X button to display the heat and cool  
selections.  
3
4
.
.
Use the S and T buttons to select Heat or Cool.  
Press the X button to accept the highlighted selec-  
tion and display the next option.  
SELECT  
HEAT/COOL  
FOR  
RELAY 1  
M24497  
Fig. 31. Program - Heat/Cool.  
1
5
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T775A/B/M SERIES 2000 CONTROLLER  
1. PROGRAMMING  
MENU  
PROGRAM  
RELAY 1  
SETBACK  
PROGRAM  
RELAY 1  
1.2.5. SETBACK  
The Setback temperature option displays if scheduling is  
enabled (see Fig. 55 on page 24) or the DI Option is set to  
Setback. (see Fig. 57 on page 25).  
SETBACK  
This is the desired setpoint temperature that you want to  
use during setback mode for this output. For example, if  
your setpoint is 70°F and you want the temperature to  
drop 10°F during setback mode, enter 60°F as the set-  
point for this output.  
oF  
0
ENTER  
SETBACK  
6
SETPOINT  
FOR RELAY 1  
1
2
.
.
From the menu, use the S and T buttons to high-  
light SETBACK.  
Use the S and T buttons to increase/decrease the  
desired setpoint temperature.  
Default: 60°F (16°C)  
M24498  
Fig. 32. Program - Setback.  
Range: -40°F to 248°F (-40°C to 120°C)  
Press the X button to accept the value and display  
the menu.  
3
.
1.2.6. Program Next Output (Mod or Relay)  
For the next output (Mod or Relay), select the desired  
output from the Program menu (see Fig. 26 on page 14).  
Go to “1.2.1. SETPOINT” on page 14 to program the next  
output.  
When you finish programming the outputs, continue with  
“1.2.7. Exiting Program Mode” on page 16.  
1.2.7. Exiting Program Mode  
Press the HOME button to leave programming mode and  
MENU  
PROGRAM  
return to the home screen.  
MOD 1  
MOD 2  
RELAY 1  
RELAY 2  
RELAY 3  
RELAY 4  
EXIT  
This completes the programming procedure.  
M24499  
Fig. 33. Program - Exit.  
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2. SETUP (ADVANCED OPTIONS)  
T775A/B/M SERIES 2000 CONTROLLER  
2
. SETUP (ADVANCED OPTIONS)  
Setup provides the ability to change the factory default  
settings for the temperature sensors and outputs, to  
enable/disable reset control, and to enable/disable  
scheduling.  
Once in Setup mode, you use the —  
•
•
•
Left arrow button(W) to scroll backward through the  
Setup menus  
Right arrow button (X) to select the highlighted menu  
item and display its content  
NOTE: The controller interface is intuitive. You may find  
that you do not need the following setup  
instructions for the sensors and outputs. You  
may want to use this procedure simply as a  
reference to locate the particular option or  
parameter of interest.  
Up and Down arrow buttons (S and T) to scroll up  
and down through a list of items or to increase or  
decrease the value of a displayed setup parameter  
To change the controller’s sensors and output setup  
parameters, perform the following procedures in the order  
listed:  
NOTES:  
1
.
.
If you press the HOME button or there is no  
keypad activity for four minutes, you exit  
Setup mode and return to the home screen.  
If you press the MENU button, you exit Setup  
mode and return to the menu.  
1
.
Enter Setup mode — see “2.1. Entering Setup  
Mode”  
2
3
.
.
Setup Sensors — see “2.2. Setting up the Sensors”  
Setup Outputs — see “2.3. Setting up the Outputs”  
on page 21  
2
4
.
Exit Setup Mode — see “2.4. EXIT Setup Mode” on  
page 29  
Setup Procedure  
The Setup process uses a hierarchical menu structure  
that is easy to use. You press the W and X arrow buttons 2.1. Entering Setup Mode  
to move forward and backward through the menus.  
To enter Setup mode, press and hold the MENU button  
for five seconds to display the Setup menu. See Fig. 25  
on page 12.  
NOTE: The menus can display only those relays that  
are defined in Setup (see “2.3.2. NBR OF  
RELAYS” on page 24). For example, if you con-  
figure only two relays, then only two relays dis-  
play on the appropriate menus.  
2
.2. Setting up the Sensors  
SETUP  
SENSORS  
SETUP  
SENSORS  
1
.
From the Setup menu, use the S and T buttons to  
highlight SENSORS.  
#
SENSORS  
SENSOR A  
SENSOR B  
EXIT  
2
.
Press the X button to display the Sensors menu.  
M24500  
Fig. 34. Setup - Sensors Menu.  
SETUP  
SENSORS  
SENSORS  
SETUP  
SENSORS  
# SENSORS  
2.2.1. Number of SENSORS  
The value entered here determines the number of  
sensors displayed on the home screen.  
#
1
2
.
.
From the Sensors menu, highlight # SENSORS  
then press the X button to display the number of  
sensors.  
Use the S and T buttons to enter the number of  
sensors (1 or 2).  
Default: 2  
2
ENTER  
NUMBER OF  
SENSORS  
3. Press the X button to accept the value and display  
the SENSOR A selection.  
M24501  
Fig. 35. Setup - Sensors - Number of Sensors.  
1
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T775A/B/M SERIES 2000 CONTROLLER  
2. SETUP (ADVANCED OPTIONS)  
SETUP  
2.2.2. SENSOR A  
SETUP  
SENSORS  
SENSOR A  
SENSORS  
SENSOR A  
1. From the Sensors menu, highlight SENSOR A.  
2. Press the X button to display the Sensor A selec-  
tions.  
UNITS  
CALIBRATE  
LABEL  
EXIT  
M24502  
Fig. 36. Setup - Sensors - Sensor A Menu.  
SETUP  
SENSORS  
SENSOR A  
UNITS  
SETUP  
SENSORS  
SENSOR A  
UNITS  
2.2.2.1. UNITS (°F or °C)  
IMPORTANT  
DEG F  
DEG C  
This is a global change and affects the unit  
values for all temperature parameters on all  
displays.  
The UNITS screen displays only for Sensor A.  
SELECT  
1. From the Sensor A selections, use the S and T  
buttons to highlight UNITS.  
UNITS FOR  
SENSOR A  
M24503  
2
3
.
.
Press the X button to display the temperature units.  
Use the S and T buttons to highlight F or C.  
Default: F (Fahrenheit)  
Fig. 37. Setup - Sensors - Sensor A - Units.  
4
.
Press the X button to accept the units and return to  
the Sensor A selections.  
SETUP  
SENSORS  
SENSOR A  
CALIBRATE  
SETUP  
SENSORS  
SENSOR A  
CALIBRATE  
2.2.2.2. CALIBRATE (the sensor)  
Ensure that the wire size calibration value is within the  
limits. See “Temperature Sensor Calibration” on page 10.  
1
2
3
.
.
.
From the Sensor A selections, use the S and T  
buttons to highlight CALIBRATE.  
Press the X button to display the calibration degree  
value.  
Use the S and T buttons to increase/decrease the  
desired calibration degrees.  
Default: 0.0  
Range: +/-10°F (+/-6°C)  
Press the X button to accept the value and return to  
the Sensor A selections.  
oF  
0
ENTER  
VALUE TO  
CALIBRATE  
SENSOR A  
.0  
M24504  
4
.
Fig. 38. Setup - Sensors - Sensor A - Calibrate.  
SETUP  
SETUP  
SENSORS  
2.2.2.3. LABEL (the sensor input)  
For a sensor already labeled, the display positions to and  
highlights that label.  
SENSORS  
SENSOR A  
SENSOR A  
LABEL  
LABEL  
SENSOR A  
BOILER A  
OUTDOOR A  
DUCT A  
1. From the Sensor A selections, use the S and T  
buttons to highlight LABEL.  
2. Press the X button to display the label list.  
3. Use the S and T buttons to scroll through list and  
highlight the desired label.  
DISCHRG A  
CHILLER A  
ROOM A  
You may need to scroll up or down to view all possi-  
ble labels.  
4. Use the X button to accept the highlighted label  
and exit the list.  
SELECT  
LABEL FOR  
SENSOR A  
M24505  
Fig. 39. Setup - Sensors - Sensor A - Label.  
NOTE: The label names in list order are: Sensor, Boiler,  
Outdoor, Duct, Dischrg, Chiller, Room, Supply,  
Return, and Animals.  
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2. SETUP (ADVANCED OPTIONS)  
T775A/B/M SERIES 2000 CONTROLLER  
SETUP  
2.2.2.4. Exit Sensor A Setup  
Press the W button to exit Sensor A selections and return  
to the Sensors menu.  
or  
Use the S and T buttons to highlight EXIT and press the  
X button.  
SENSORS  
SENSOR A  
UNITS  
CALIBRATE  
LABEL  
EXIT  
M24506  
Fig. 40. Setup - Sensors - Sensor A - Exit.  
2
.2.3. SENSOR B  
SETUP  
SENSORS  
SETUP  
For the T775M2030 and T775M2048 models only, which  
have a High/Low modulating temperature limit, the LIMIT  
item displays on the Sensor B menu.  
SENSORS  
#
SENSORS  
SETUP  
SENSOR A  
SENSOR B  
EXIT  
SENSORS  
SENSOR B  
1
2
.
.
From the Sensors menu, use the T button to high-  
light SENSOR B.  
Press the X button to display the Sensor B menu.  
CALIBRATE  
LABEL  
LIMIT  
EXIT  
M24507  
Fig. 41. Setup - Sensors - Sensor B Menu.  
2
.2.3.1. CALIBRATE  
Setting the calibration value is accomplished the same  
way as the Sensor A. See “2.2.2.2. CALIBRATE (the  
sensor)” on page 18 above.  
2
.2.3.2. LABEL  
Setting the label is accomplished the same way as the  
Sensor A. See “2.2.2.3. LABEL (the sensor input)” on  
page 18 above.  
1
9
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T775A/B/M SERIES 2000 CONTROLLER  
2. SETUP (ADVANCED OPTIONS)  
SETUP  
SETUP  
SENSORS  
SENSOR  
LIMIT  
2.2.4. LIMIT (Sensor B only)  
For the T775M2030 and T775M2048 models only, the  
LIMIT item displays on the Sensor B menu.  
SENSORS  
SENSOR B  
LIMIT  
B
DISABLE  
HI LIMIT  
LOW LIMIT  
NOTE: The LIMIT option acts only on Modulating  
Output 1.  
1
.
From the Sensors menu, use the T button to high-  
light SENSOR B.  
SELECT  
HI/LOW  
2. Press the X button to display the Sensor B menu.  
LIMIT FOR  
SENSOR B  
3
4
5
.
.
.
Use the S and T buttons to select the LIMIT item.  
Use the X button to display the Limit selections.  
Use the S and T buttons to select the desired limit,  
M24508  
Fig. 42. Setup - Sensors - Sensor B - Limit.  
(
Disable, Hi Limit, or Low Limit).  
Default: Disable  
Press the X button to accept the value and return to  
the Sensor B menu.  
6
.
When you select Hi Limit or Low Limit, the Sensor B menu  
changes and adds the Hi/Low Limit and Throttling Range  
items.  
If you are setting a Hi or Low Limit, continue with “2.2.4.1.  
HI LIMIT or LOW LIMIT (Sensor B only)”.  
If you selected Disable for the Limit value, continue with  
“2.3. Setting up the Outputs” on page 21.  
SETUP  
SENSORS  
SENSOR  
SETUP  
2.2.4.1. HI LIMIT or LOW LIMIT (Sensor B only)  
SENSORS  
SENSOR B  
Fig. 43 shows the Hi Limit (Heat mode), but the process is  
the same for setting the Low Limit (Cool mode). For  
proper operation, the high limit should be used only in the  
Heat mode, and the low limit only in the Cool mode.  
B
UNITS  
CALIBRATE  
LABEL  
SETUP  
SENSORS  
SENSOR B  
HI LIM  
LIMIT  
HI LIMIT  
THROT RNG  
EXIT  
Sensor B can be assigned a high/low limit, so that as you  
are controlling temperature at Sensor A, the control  
adjusts its modulating output to prevent exceeding the  
user-entered limit for Sensor B.  
oF  
9
0
1
2
.
.
From the Sensor B menu, use the T button to high-  
light HI LIMIT or LOW LIMIT.  
Press the X button display the LIMIT value.  
ENTER  
VALUE FOR  
SENSOR B  
HI LIMIT  
3. Use the S and T buttons to increase/decrease the  
desired Limit value.  
4
M24509  
.
Press the X button to accept the value and return to  
the Limit menu.  
Fig. 43. Setup - Sensors - Sensor B - Hi/Low Limit  
showing Hi Limit).  
(
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2. SETUP (ADVANCED OPTIONS)  
T775A/B/M SERIES 2000 CONTROLLER  
SETUP  
SENSORS  
SENSOR  
SETUP  
2.2.4.2. THROTTLING RANGE (Sensor B only)  
SENSORS  
SENSOR B  
The throttling range for the modulating high or low limit  
positions the setpoint at the end of the throttling range.  
For example, with a high (Heat) limit at Sensor B of 200°F  
and a throttling range of 10°F, the modulating output  
controlling Sensor A begins to throttle back at 190°F, and  
fully closes at 200°F. Conversely, the throttling range for  
the low limit begins above the Cooling setpoint in the  
same manner.  
B
UNITS  
CALIBRATE  
LABEL  
SETUP  
LIMIT  
SENSORS  
SENSOR B  
THROT RNG  
HI LIMIT  
THROT RNG  
EXIT  
1
2
.
.
From the Limit menu, use the T button to highlight  
THROT RNG.  
Use the S and T buttons to increase/decrease the  
desired value for the Throttling Range.  
Default = 0  
oF  
1
0
ENTER  
VALUE FOR  
SENSOR B  
THROTLING  
RANGE  
3. Press the X button to accept the value and return to  
the Limit menu.  
M24510  
4. Press the W button to exit the Limit menu.  
5
.
Press the W button to exit the Sensors menu and  
return to the Setup menu.  
Fig. 44. Setup - Sensors - Sensor B - Throttling  
Range.  
2
.3. Setting up the Outputs  
SETUP  
OUTPUTS  
SETUP  
OUTPUTS  
1
.
From the Setup menu, use the Sand T buttons to  
highlight OUTPUTS.  
MOD 1  
MOD 2  
2
.
Press the X button to display the Outputs menu.  
#
RELAYS  
OPTIONS  
RELAY 1  
RELAY 2  
RELAY 3  
RELAY 4  
EXIT  
NOTE: The menus (e.g. the Outputs menu shown here)  
can display only those relays that are defined in  
Setup (see page 24). For example, if you config-  
ure only two relays, then only two relays display  
on the appropriate menus.  
M24511  
The following procedures set up each modulating output  
and relay output.  
Fig. 45. Setup - Outputs Menu.  
SETUP  
OUTPUTS  
MOD 1  
SETUP  
OUTPUTS  
MOD 1  
2.3.1. Setting up the Modulating Outputs  
1
.
From the Output menu, use the S and T buttons to  
highlight the desired modulating output (MOD 1 or  
MOD 2).  
TYPE  
MIN OUT %  
INTEGRAL  
DERIVATIV  
SCHEDULE  
RESET  
2
.
Press the X button to display the selected MOD  
menu.  
EXIT  
NOTE: Modulating outputs are not available on the  
T775A and T775B controller models. If you are  
setting up one of these controllers, skip to “2.3.2.  
NBR OF RELAYS” on page 24.  
M24512  
Fig. 46. Setup - Outputs - Modulating Output Menu.  
Use the remaining procedures, beginning with “2.3.1.1.  
TYPE (of output signal)”, to set up each modulating  
output. If you have two modulating outputs, repeat these  
procedures for each modulating output.  
2
1
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T775A/B/M SERIES 2000 CONTROLLER  
2. SETUP (ADVANCED OPTIONS)  
SETUP  
OUTPUTS  
MOD 1  
TYPE  
SETUP  
OUTPUTS  
MOD 1  
2.3.1.1. TYPE (of output signal)  
TYPE  
1. From the Mod menu, use the S and T buttons to  
highlight TYPE.  
4
0
2
- 20 mA  
-10 V  
-10 V  
2
3
.
.
Press the X button to display the Type selections.  
Use the Sand T buttons to highlight the desired  
output type.  
SERIES 90  
Default: 4-20 mA  
Press the X button to accept the selected type and  
return to the Mod menu.  
4
.
SELECT  
TYPE FOR  
MOD 1  
M24513  
Fig. 47. Setup - Outputs - Mod Out - Type.  
SETUP  
OUTPUTS  
MOD 1  
MIN OUT %  
SETUP  
OUTPUTS  
MOD 1  
2.3.1.2. MIN OUT %  
The minimum output % prevents the output from dropping  
below the value entered. This value can be useful to  
maintain minimum damper position.  
MIN OUT %  
Using the time clock or digital input to disable the output  
forces the output to 0%.  
%
0
1
.
From the Mod menu, use the S and T buttons to  
highlight MIN OUT %.  
ENTER  
MINIMUM  
PERCENT FOR  
MOD 1  
2
3
.
.
Press the X button to display the Min Out %.  
Use the S and T buttons to increase/decrease the  
desired value from 0% to 100% in 1% increments.  
Default: 0%  
Range: 0 to 100%  
Press the X button to accept the percentage and  
return to the Mod menu.  
M24514  
Fig. 48. Setup - Outputs - Mod Out - Minimum Output  
Percentage.  
4
.
SETUP  
OUTPUTS  
MOD 1  
INTEGRAL  
SETUP  
OUTPUTS  
MOD 1  
2.3.1.3. INTEGRAL  
INTEGRAL  
1
.
From the Mod menu, use the S and T buttons to  
highlight INTEGRAL.  
2
3
.
.
Press the X button to display the Integral seconds.  
Use the S and T buttons to increase/decrease the  
value from 0 to 3,600 in 10 second increments.  
Default: 400 seconds  
SEC  
00  
ENTER  
INTEGRAL  
TIME FOR  
MOD 1  
4
Range: 0 to 3,600 seconds  
4. Press the X button to accept the seconds and  
return to the Mod menu.  
M24515  
Fig. 49. Setup - Outputs - Mod Out - Integral.  
NOTES:  
1
. The Integral time is factory set for 400 seconds. This  
is a good middle range and should satisfy many  
applications. The integral time can be increased for  
applications where sensed response is slow, and can  
be decreased for applications where sensed  
3. Keep in mind that control is most sensitive to  
throttling range. Adjust the throttling range first  
before any adjustment to integral time. Adjust  
throttling range to be as wide as possible to start  
since this will provide the most stable control.  
Remember that the integral will eliminate the steady  
state error so you do not need to have a small  
throttling range to have accurate control. (Integral  
action allows for controlling to a setpoint even with a  
wide throttling range).  
response is fast (e.g. discharge air control).  
2
. As a starting point, an optimal integral time for  
discharge air typically ranges from 12 to 200  
seconds. An optimal integral time for room control  
typically ranges from 60 to 2,500 seconds. The  
purpose of integral action is to reduce or eliminate  
the offset from setpoint during steady state control  
that is often seen in proportional only control.  
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2. SETUP (ADVANCED OPTIONS)  
T775A/B/M SERIES 2000 CONTROLLER  
SETUP  
SETUP  
OUTPUTS  
MOD 1  
OUTPUTS  
2.3.1.4. DERIVATIVE  
MOD 1  
The Derivative default value is factory set to zero (no  
derivative control). It is strongly recommended that the  
derivative remain at zero (0) unless you have a very good  
reason to adjust it. Derivative control is not needed in the  
vast majority of HVAC applications.  
DERIVATIV  
DERIVATIV  
SEC  
0
1
.
From the Mod menu, use the S and T buttons to  
highlight DERIVATIV.  
ENTER  
DERIVATIVE  
TIME FOR  
MOD 1  
2. Press the X button to display the Derivative sec-  
onds.  
M24516  
3
4
.
.
Use the S and T buttons to increase/decrease the  
value.  
Default: 0 (zero)  
Range: 0 to 3,600 seconds  
Press the X button to accept the seconds and  
return to the Mod menu.  
Fig. 50. Setup - Outputs - Mod Out - Derivative.  
SETUP  
OUTPUTS  
MOD 1  
SCHEDULE  
SETUP  
OUTPUTS  
MOD 1  
2.3.1.5. SCHEDULE  
The Schedule option displays only if the USE SCHED  
parameter is set to Yes (see page 24).  
SCHEDULE  
YES  
NO  
1
2
3
.
.
.
From the Mod menu, use the S and T buttons to  
highlight SCHEDULE.  
Use the S and T buttons to highlight YES or NO.  
Default: YES  
Press the X button to accept the selection and  
return to the Mod menu.  
USE  
SCHEDULE  
FOR  
Each output can be set up to follow or ignore the built in  
scheduler. To disable the scheduler for all outputs, see  
OUTPUTS  
M24517  
“2.3.3.1. USE SCHED” on page 24.  
Fig. 51. Setup - Outputs - Mod Out - Schedule.  
SETUP  
OUTPUTS  
MOD 1  
2.3.1.6. EXIT  
Press the W button (or highlight EXIT and press the X  
button) to exit the Mod menu and return to the Outputs  
menu.  
TYPE  
MIN OUT %  
INTEGRAL  
DERIVATIV  
SCHEDULE  
EXIT  
If you have a second modulating output to configure, go to  
“2.3.1. Setting up the Modulating Outputs” on page 21.  
If you are finished setting up the modulating outputs,  
continue with “2.3.2. NBR OF RELAYS”.  
M24518  
Fig. 52. Setup - Outputs - Mod Out - Exit.  
2
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T775A/B/M SERIES 2000 CONTROLLER  
2. SETUP (ADVANCED OPTIONS)  
SETUP  
OUTPUTS  
RELAYS  
SETUP  
OUTPUTS  
# RELAYS  
2.3.2. NBR OF RELAYS  
#
1
.
From the Outputs menu, use the Sand T buttons  
to highlight # RELAYS.  
2
3
.
.
Press the X button to display the number of relays.  
Use the S and T buttons to display the number  
from 1 to 4 depending on the model. (See notes  
below.)  
4
4
.
Press the X button to accept the value and display  
the Outputs menu.  
ENTER  
NUMBER OF  
RELAYS  
NOTES:  
1.  
M24519  
The T775A/B/M models have the following  
outputs available:  
T775A2019 1 relay output  
Fig. 53. Setup - Outputs - Number of Relays.  
T775B2016 up to 2 relay outputs  
T775B2024 up to 4 relay outputs  
T775B2032 up to 2 relay outputs  
T775B2040 up to 4 relay outputs  
T775M2006 no relay outputs  
T775M2014 up to 4 relay outputs  
The number of relay outputs entered here  
determines how many relays display on the  
home screen.  
2
.
SETUP  
OUTPUTS  
OPTIONS  
SETUP  
OUTPUTS  
OPTIONS  
2.3.3. OPTIONS  
1
.
From the Outputs menu, use the Sand T buttons  
to highlight OPTIONS.  
USE SCHED  
MIN OFF  
DI OPTS  
SHOW RT  
EXIT  
2
.
Press the X button to display the Options menu.  
M24520  
Fig. 54. Setup - Outputs - Options Menu.  
SETUP  
SETUP  
OUTPUTS  
OUTPUTS  
OPTIONS  
2.3.3.1. USE SCHED  
OPTIONS  
USE SCHED  
USE SCHED  
1. Press the X button to display the schedule selec-  
tions.  
YES  
NO  
2
3
.
.
Use the Sand T buttons to highlight YES or NO.  
Default: NO  
Press the X button to accept the value and display  
the MIN OFF option.  
USE  
SCHEDULE  
FOR  
Selecting NO disables scheduling for all outputs.  
OUTPUTS  
Selecting YES enables scheduling for all outputs. When  
YES is selected, all individual outputs default to follow the  
schedule. However, each individual output can be  
removed from scheduling as desired.  
M24521  
Fig. 55. Setup - Outputs - Options - Schedule.  
With Scheduling enabled, when you return to Program  
mode, the new option for Scheduling displays. You can  
press the home key and then the menu key to view the  
Schedule options in the menu.  
See “2.3.1.5. SCHEDULE” on page 23.  
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2. SETUP (ADVANCED OPTIONS)  
T775A/B/M SERIES 2000 CONTROLLER  
SETUP  
SETUP  
OUTPUTS  
OPTIONS  
MIN OFF  
OUTPUTS  
OPTIONS  
MIN OFF  
2.3.3.2. MIN OFF (minimum off time for all relays)  
This is the minimum number of seconds of “off time” for  
all relays.  
1
2
.
.
Press the X button to display the Min Off value.  
Use the S and T buttons to increase/decrease the  
desired number of seconds from 0 to 990 seconds  
in 10 second increments.  
SEC  
0
Default: 0 (zero)  
Range: 0 to 990 seconds  
Press the X button to accept the seconds and  
display the DI OPTIONS.  
ENTER  
MINIMUM  
OFF TIME  
3
.
FOR RELAYS  
M24522  
Fig. 56. Setup - Outputs - Options - Min Off Time.  
NOTES:  
.
1
The minimum off time applies to all relay  
outputs.  
2
.
When minimum off time is active, relays  
waiting to be energized display a flashing  
square underneath the relay number on the  
home screen.  
3
.
If the minimum off time is not equal to zero  
0), the minimum off time activates at power-  
(
up. To manually override, press the W button  
at any time.  
SETUP  
SETUP  
OUTPUTS  
2.3.3.3. DI OPTIONS (digital input options)  
OUTPUTS  
OPTIONS  
OPTIONS  
DI OPTS  
The DI Option you select applies to all outputs. This  
option overrides any Setpoint/Setback values entered in  
the Schedule.  
DI OPTS  
DISABLE  
SETBACK  
IGNORE  
1
2
.
.
Press the X button to display the DI Option selec-  
tions.  
Use the S and T buttons to highlight DISABLE,  
SETBACK, or IGNORE.  
Default: DISABLE  
SELECT DI  
OPTIONS  
FOR  
3
.
Press the X button to accept the value and display  
the SHOW RT option.  
OUTPUTS  
M24523  
When the digital input (DI) closes, all outputs follow the DI  
option value (Disable, Setback, or Ignore):  
Fig. 57. Setup - Outputs - Options - DI Options.  
•
DISABLE disables the outputs; relays return to de-  
energized state and Mod outputs return to 0% output.  
SETBACK enables a setback temperature value to be  
programmed for each output.  
•
—
To program the Setback temperature, see Fig. 32  
on page 16.  
IGNORE causes the digital input to have no effect on  
•
the Relay or Mod outputs.  
SETUP  
OUTPUTS  
OPTIONS  
SHOW RT  
SETUP  
OUTPUTS  
OPTIONS  
SHOW RT  
2.3.3.4. SHOW RT (show run time hours)  
1. Press the X button to display the Show RT values.  
2. Use the S and T buttons to select YES or NO.  
Default: YES  
YES  
NO  
3
.
Press the X button to accept the value and return to  
the Options menu.  
Selecting YES shows the RT (run time) hours for each  
relay on the home screen displays.  
USE  
RUNTIME  
FOR  
NOTE: Run times can be reset to zero for each individ-  
ual relay. You must do this for each relay that  
you want to reset to zero. See “2.3.4.3. RESET  
RT (run time hours)” on page 28.  
RELAYS  
M24524  
Fig. 58. Setup - Outputs - Options - Show Runtime.  
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T775A/B/M SERIES 2000 CONTROLLER  
2. SETUP (ADVANCED OPTIONS)  
SETUP  
2.3.3.5. Exit Options Setup  
Press the W button (or highlight EXIT and press the X  
button) to exit and return to the Outputs menu.  
OUTPUTS  
OPTIONS  
USE SCHED  
MIN OFF  
DI OPTION  
SHOW RT  
EXIT  
Continue with “2.3.4. Setting up the Relays”  
M24525  
Fig. 59. Setup - Outputs - Options - Exit.  
SETUP  
OUTPUTS  
RELAY 1  
SETUP  
OUTPUTS  
RELAY 1  
2.3.4. Setting up the Relays  
1
.
From the Outputs menu, use the S and T buttons  
to highlight the desired relay (1-4 depending on  
model).  
TYPE  
SCHEDULE  
RESET  
2
.
Press the X button to display the selected relay  
menu.  
RESET RT  
EXIT  
The TYPE selection shown in Fig. 60 displays only for  
Relay 1 and Relay 3.  
Continue with the remainder of section 3.4 to setup the  
relay outputs.  
M24526  
Fig. 60. Setup - Outputs - Relay Menu.  
SETUP  
OUTPUTS  
RELAY 1  
TYPE  
SETUP  
OUTPUTS  
RELAY 1  
TYPE  
2.3.4.1. TYPE (standard or floating)  
The Floating option is only available on the T775B2016,  
T775B2024, T775B2032, and T775B2040 models.  
STANDARD  
FLOATING  
For these models, this selection displays only for Relay 1  
and/or Relay 3.  
1
2
.
.
Press the X button to display the Type values.  
Use the S and T buttons to select STANDARD OR  
FLOATING.  
SELECT  
TYPE FOR  
RELAY 1  
Default: STANDARD (not floating)  
Press the X button to accept the value and return to  
the Relay menu.  
M24527  
3
.
Fig. 61. Setup - Outputs - Relay - Type.  
If you select FLOATING, the relays are paired (1-2 or 3-4)  
and are setup together. Continue with “2.3.4.1.1. Floating  
Relay Menu”.  
If you select STANDARD, go to “2.3.4.2. SCHEDULE” on  
page 28.  
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2. SETUP (ADVANCED OPTIONS)  
T775A/B/M SERIES 2000 CONTROLLER  
SETUP  
SETUP  
OUTPUTS  
FLOAT 1  
2.3.4.1.1. Floating Relay Menu  
The Floating option is only available on the T775B2016,  
T775B2024, T775B2032, and T775B2040 models.  
OUTPUTS  
FLOAT 1  
TYPE  
ACTUATOR  
INTEGRAL  
DERIVATIV  
SCHEDULE  
RESET  
When Relay 1 or Relay 3 is setup as floating, relays are  
paired and the Float 1 or Float 2 menu displays with the  
selections shown in Fig. 62.  
EXIT  
M24528  
Fig. 62. Setup - Outputs - Floating Relay - Menu.  
SETUP  
OUTPUTS  
FLOAT 1  
ACTUATOR  
SETUP  
OUTPUTS  
FLOAT 1  
2.3.4.1.1.1. ACTUATOR (floating relay only)  
The Actuator option displays only on the T775B2016,  
T775B2024, T775B2032, and T775B2040 models when  
the Type option = Floating.  
ACTUATOR  
1
.
From the menu, use the S and T buttons to high-  
light ACTUATOR.  
SEC  
0
ENTER  
ACTUATOR  
9
2
3
.
.
Press the X button to display the actuator value.  
Use the S and T buttons to increase/decrease the  
desired number of seconds.  
TIMING FOR  
FLOAT 1  
Default: 90 seconds  
Range: 0 to 3,600 seconds)  
M24529  
4
.
Press the X button to accept the value and display  
the INTEGRAL option.  
Fig. 63. Setup - Outputs - Floating Relay - Actuator.  
The actuator run time is defined as the time needed to  
move the actuator from the fully closed to fully open  
position and visa versa.  
SETUP  
OUTPUTS  
FLOAT 1  
INTEGRAL  
SETUP  
OUTPUTS  
FLOAT 1  
2.3.4.1.1.2. INTEGRAL (modulating/floating relay only)  
The Actuator option displays only on the T775B2016,  
T775B2024, T775B2032, and T775B2040 models when  
the Type option = Floating.  
INTEGRAL  
1
.
From the menu, use the S and T buttons to high-  
light INTEGRAL.  
SEC  
00  
ENTER  
INTEGRAL  
TIME FOR  
FLOAT 1  
4
2
3
.
.
Press the X button to display the actuator value.  
Use the S and T buttons to increase/decrease the  
desired number of seconds.  
Default: 400 seconds  
Range: 0 to 3,600 seconds)  
M24530  
4
.
Press the X button to accept the value and display  
the DERIVATIV option.  
Fig. 64. Setup - Outputs - Floating Relay - Integral.  
See Integral NOTES on page 22 for additional information  
about setting the Integral time.  
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T775A/B/M SERIES 2000 CONTROLLER  
2. SETUP (ADVANCED OPTIONS)  
SETUP  
OUTPUTS  
FLOAT 1  
DERIVATIV  
SETUP  
OUTPUTS  
FLOAT 1  
2.3.4.1.1.3. DERIVATIVE (modulating/floating relay only)  
The Derivative option displays only on the T775B2016,  
T775B2024, T775B2032, and T775B2040 models when  
the Type option = Floating.  
DERIVATIV  
1
.
From the menu, use the S and T buttons to high-  
light DERIVATIV.  
SEC  
0
2
3
.
.
Press the X button to display the actuator value.  
Use the S and T buttons to increase/decrease the  
desired number of seconds.  
ENTER  
DERIVATIVE  
TIME FOR  
FLOAT 1  
Default: 0 seconds  
Range: 0 to 3,600 seconds)  
M24531  
4
.
Press the X button to accept the value and display  
the SCHEDULE option.  
Fig. 65. Setup - Outputs - Floating Relay - Derivative.  
Continue with “2.3.4.2. SCHEDULE” for the remaining  
relay selections.  
SETUP  
OUTPUTS  
RELAY 1  
SCHEDULE  
SETUP  
OUTPUTS  
RELAY 1  
2.3.4.2. SCHEDULE  
This selection displays only if “Use Sched = YES” is  
selected during the Output Options setup (see page 24).  
When selected, individual outputs default to follow the  
schedule.  
SCHEDULE  
YES  
NO  
1
2
.
.
Press the X button to display the Schedule values.  
Use the S and T buttons to select YES or NO.  
Default: YES  
USE  
SCHEDULE  
FOR  
3. Press the X button to accept the value and return to  
the Relay menu.  
OUTPUTS  
M24532  
An individual output can be selected to be controlled or  
not controlled by the schedule.  
Fig. 66. Setup - Outputs - Relay - Schedule.  
If NO is selected, the Setback selection does not appear  
in the Program menu for this output.  
SETUP  
OUTPUTS  
RELAY 1  
RESET RT  
SETUP  
OUTPUTS  
RELAY 1  
2.3.4.3. RESET RT (run time hours)  
This selection displays only if “Show RT = YES” is  
selected during Output Options setup (see page 25).  
RESET RT  
YES  
NO  
1
2
3
.
.
.
From the Relay menu, press the X button to display  
the Reset RT values.  
Use the S and T buttons to select YES or NO.  
Default: NO  
Press the X button to accept the value and return to  
the Relay menu.  
RESET  
RUN TIME  
FOR  
RELAY 1  
M24533  
Selecting YES immediately resets the output run time  
hours to zero for this output. When you subsequently  
return to this screen, the RESET RT defaults to NO.  
Fig. 67. Setup - Outputs - Relay - Reset Runtime.  
NOTE: Run times can be reset to zero for each individ-  
ual relay. You must do this for each relay that  
you want to reset to zero.  
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2. SETUP (ADVANCED OPTIONS)  
T775A/B/M SERIES 2000 CONTROLLER  
SETUP  
OUTPUTS  
RELAY 1  
2.4. EXIT Setup Mode  
Press the W button to exit the selected relay set up and  
return to the Outputs menu.  
RESET  
SCHEDULE  
RESET RT  
EXIT  
To setup the next relay output go to “2.3.4. Setting up the  
Relays” on page 26.  
If you are finished setting up the relay outputs, press the  
HOME button to exit Setup mode and return to the home  
screen display.  
M24534  
This completes the Setup procedure.  
Fig. 68. Setup - Outputs - Relay - Exit.  
2
9
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T775A/B/M SERIES 2000 CONTROLLER  
3. SCHEDULING  
3. SCHEDULING  
Scheduling provides the ability to set daily temperature  
settings for up to two events per day. Typically, these are  
the daytime (setpoint) and the nighttime (setback)  
settings.  
NOTES:  
1.  
If you press the HOME button or there is no  
keypad activity for four minutes, you exit  
Scheduling mode and return to the home  
screen.  
IMPORTANT  
2.  
If you press the MENU button, you exit  
Scheduling mode and return to the menu.  
To enable Scheduling, you must first enter Setup  
mode (press and hold the MENU button for 5  
seconds), select OUTPUTS, select OPTIONS,  
select USE SCHED, and then select YES. (see  
To create or change a schedule, you use the —  
•
•
•
Left arrow button (W) to scroll backward through the  
Schedule menus  
“2.3.3.1. USE SCHED” on page 24).  
IMPORTANT  
To properly account for Daylight Saving time, be  
sure to set the Date before setting the Time.  
Right arrow button (X) to select the highlighted menu  
item and display its content  
See “3.2.2. SET DATE” on page 31.  
Up and Down arrow buttons (S and T) to scroll up  
and down through a list of items or to increase or  
decrease the value of a displayed schedule parameter  
NOTE: Each output is independently configurable to  
follow the schedule or not. For modulating  
outputs, see “2.3.1.5. SCHEDULE” on page 23.  
For relay outputs, see “2.3.4.2. SCHEDULE” on Creating a Schedule  
page 28.  
To create a schedule, perform the following in the order  
listed:  
NOTE: The controller interface is intuitive. You may find  
that you do not need the following scheduling  
instructions. You may want to use this procedure  
simply as a reference to locate the particular  
option or parameter of interest.  
1
2
.
.
Enable Scheduling in Setup mode - see “2.3.3.1.  
USE SCHED” on page 24  
Enter Schedule mode — see “3.1. Entering Sched-  
ule Mode”  
Set the Schedule Options — see “3.2. OPTIONS”  
Set Individual Schedules — begin with “3.3. Setting  
Individual Schedules” on page 32  
3
4
.
.
5
.
Exit Schedule Mode — see “3.4. Exiting Scheduling  
Mode” on page 33  
3
.1. Entering Schedule Mode  
MENU  
MENU  
SCHEDULE  
SCHEDULE  
Press the MENU button, then select SCHEDULE and  
press the X button to view the Schedule menu.  
OPTIONS  
MON-FRI  
SAT-SUN  
MONDAY  
TUESDAY  
WEDNESDAY  
THURSDAY  
FRIDAY  
SATURDAY  
SUNDAY  
EXIT  
M24536  
Fig. 69. Schedule - Menu.  
MENU  
MENU  
3.2. OPTIONS  
SCHEDULE  
OPTIONS  
SCHEDULE  
OPTIONS  
1
.
From the Schedule menu, use the S and T buttons  
to highlight OPTIONS.  
SET TIME  
SET DATE  
DAYLIGHT  
EXIT  
2
.
Press the X button to display the Options menu.  
M24537  
Fig. 70. Schedule - Options Menu.  
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3
. SCHEDULING  
T775A/B/M SERIES 2000 CONTROLLER  
MAIN  
MAIN  
SCHEDULE  
SCHEDULE  
OPTIONS  
SET TIME  
3.2.1. SET TIME  
Setting the system time is required to enable the  
controller to follow daylight saving time.  
OPTIONS  
SET TIME  
IMPORTANT  
Set the Date before setting the Time. See  
“3.2.2. SET DATE”.  
0
8:12 AM  
1
2
3
4
5
.
.
.
.
.
From the Options menu, use the S and T buttons  
to highlight SET TIME.  
Press the X button to display the current system  
time setting.  
Use the X button to cycle between the hour,  
minute, and AM/PM values.  
Use the S and T buttons to increase/decrease the  
desired value for the hour, minute, and AM/PM.  
Press the W button to accept the Time and return to  
the Options menu.  
SET  
SYSTEM  
TIME  
M24538  
Fig. 71. Schedule - Options - System Time.  
MAIN  
MAIN  
SCHEDULE  
OPTIONS  
SET DATE  
SCHEDULE  
OPTIONS  
SET DATE  
3.2.2. SET DATE  
Setting the system date is required to enable the  
controller to follow daylight saving time.  
IMPORTANT  
To properly account for Daylight Saving time, be  
sure to set the Date before setting the Time.  
0
1/01/2007  
1
2
3
4
5
.
.
.
.
.
From the Options menu, use the S and T buttons  
to highlight SET DATE.  
Press the X button to display the current system  
date setting.  
Use the X button to cycle between the month, day,  
and year values.  
Use the S and T buttons to increase/decrease the  
desired value for the month, day, and year.  
Press the W button to accept the Date and return to  
the Options menu.  
SET  
SYSTEM  
DATE  
M24539  
Fig. 72. Schedule - Options - System Date.  
MAIN  
MAIN  
SCHEDULE  
OPTIONS  
DAYLIGHT  
SCHEDULE  
OPTIONS  
3.2.3. DAYLIGHT (daylight saving time)  
DAYLIGHT  
1. From the Options menu, use the S and T buttons  
to highlight DAYLIGHT.  
YES  
NO  
2
3
4
5
6
.
.
.
.
.
Press the X button to display the current system  
setting for daylight saving time.  
Use the S and T buttons to select YES or NO.  
Default: YES  
Press the X button to accept the value and return to  
the Options menu.  
From the Options menu, use the Use the S and T  
buttons to highlight EXIT.  
USE  
DAYLIGHT  
SAVING  
TIME  
M24540  
Press the X button to return to the Schedule menu.  
Fig. 73. Schedule - Options - Daylight Saving Time.  
3
1
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T775A/B/M SERIES 2000 CONTROLLER  
3. SCHEDULING  
MENU  
MENU  
3.3. Setting Individual Schedules  
As shown in the Schedule menu (Fig. 69 on page 30),  
schedules can be set for the following time periods:  
SCHEDULE  
MON-FRI  
SCHEDULE  
MON-FRI  
E1 SETPT  
•
•
•
Monday through Friday  
Saturday and Sunday  
Individual days of the week  
E1 TIME  
E2 SETPT  
E2 TIME  
EXIT  
1
2
.
.
From the Schedule menu, use the S and T buttons  
to highlight the desired time period.  
Press the X button to display the Schedule menu  
for the selected time period.  
M24541  
For each selected time period, the schedule event (E1  
and E2) parameters are exactly the same as shown in  
Fig. 74.  
Fig. 74. Schedule Event Menu (Showing MON-FRI).  
SCHEDULING EXAMPLE  
Setting the schedule is independent of the temperature  
settings for the relay outputs. The following illustrates a  
weekly schedule for daytime (setpoint) and night time  
(
setback) use and shows the factory default settings:  
Table 4. Mon-Fri Schedule Defaults  
DAY  
EVENT  
SETPT ACTION  
TIME  
Mon-Fri Event 1 (E1)  
Mon-Fri Event 2 (E2)  
Setpoint  
:00 AM a  
6
Setback  
:00 PM b  
6
Sat-Sun Not used; remains in Setback from Mon-Fri  
E2 settings  
a
Setpoint time span is 6:00 AM until 5:59 PM because  
setback starts at 6:00 PM.  
b
Setback time span is 6:00PM until 5:59 AM because  
setpoint starts at 6:00 AM.  
To set a schedule, continue with “3.3.1. E1 SETPT  
setpoint for event 1)”.  
(
The following figures show the MON-FRI menu, but the  
menu selections are the same for any time period.  
MAIN  
MENU  
SCHEDULE  
MON-FRI  
E1 SETPT  
SCHEDULE  
MON-FRI  
3.3.1. E1 SETPT (setpoint for event 1)  
E1 SETPT  
1
.
From the selected time period menu, use the S and  
T buttons to highlight E1 SETPT.  
SETPOINT  
SETBACK  
NOT USED  
2
3
.
.
Press the X button to display the setpoint options.  
Use the S and T buttons to highlight the desired  
option.  
4
.
Press the X button to accept the value and return to  
the selected time period menu.  
SELECT  
SETPOINT  
FOR  
EVENT 1  
M24542  
Fig. 75. Schedule - Event 1 Setpoint.  
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3
. SCHEDULING  
T775A/B/M SERIES 2000 CONTROLLER  
MAIN  
MAIN  
SCHEDULE  
SCHEDULE  
MON-FRI  
E1 TIME  
3.3.2. E1 TIME (time for event 1)  
MON-FRI  
E1 TIME  
1
2
3
4
5
.
.
.
.
.
From the selected time period menu, use the S and  
T buttons to highlight E1 TIME.  
Press the X button to display the current time set-  
ting for event 1.  
Use the X button to cycle between the hour,  
minute, and AM/PM values.  
Use the S and T buttons to increase/decrease the  
desired value for the hour, minute, and AM/PM.  
Press the W button to accept the time and return to  
the selected time period menu.  
6
:00 AM  
SET  
TIME  
FOR  
EVENT 1  
M24543  
Fig. 76. Schedule - Event 1 Time.  
3.3.3. E2 SETPOINT (setpoint for event 2)  
Creating the setpoint for event 2 is accomplished the  
same way as the first event. See “3.3.1. E1 SETPT  
setpoint for event 1)” on page 32 above.  
(
3.3.4. E2 TIME (time for event 2)  
Creating the time for event 2 is accomplished the same  
way as the first event. See “3.3.2. E1 TIME (time for event  
)” above.  
1
3
.3.5. EXIT (exit from selected time period settings)  
After entering the time for event 2, use the W button to exit  
the schedule time period and return to the Schedule menu  
(
Fig. 69 on page 30) to select a different time period.  
When you finish scheduling the time periods, continue  
with “3.4. Exiting Scheduling Mode”.  
3.4. Exiting Scheduling Mode  
Press the HOME button to exit the Schedule menu and  
return to the home screen display.  
This completes the Scheduling procedure.  
3
3
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T775A/B/M SERIES 2000 CONTROLLER  
SUMMARY MENU  
SUMMARY MENU  
TROUBLESHOOTING  
The Summary menu provides the ability to view the  
schedule (E1 and E2 times) for each relay for each day of  
the week.  
Power Loss  
The date and time settings are retained for 24 hours after  
a power outage. After a power loss of more than 24 hours,  
the date and time settings may need to be reentered. All  
other settings are stored permanently.  
NOTE: Scheduling must be enabled for the Summary  
menu to display. Enabling the schedule is  
determined in the Setup process for the Output  
Options (see page 24).  
Errors and Diagnostics  
The controller provides an error message and diagnostic  
status as described below.  
MENU  
MENU  
SUMMARY  
SUMMARY  
Error Message  
There is a two-character error code that displays in  
response to controller software problems:  
MONDAY  
RELAY 1-2  
E1: 06:00AM (72)  
E2: 06:00PM (65)  
EE  
EEPROM Failure — The values read back from  
the EEPROM are not the same as written into the  
EEPROM. This error cannot be field repaired. Replace  
the device.  
M24545  
Fig. 77. Summary Example - Monday Settings.  
Diagnostic Messages  
There are two diagnostic messages that can display in  
response to sensor problems. The diagnostic codes that  
can flash on the display are:  
For each relay, the Summary display indicates the time  
and temperature (in parenthesis) for each of the two  
scheduled events E1 and E2.  
–
–
1.  
2.  
3.  
Press the MENU button to view the menu.  
Use the S and T buttons to highlight SUMMARY.  
Press the X button to display the Summary  
settings.  
Sensor Open or Shorted — Two dashes display  
when a sensor (typically temperature) is open or  
shorted. An open circuit is considered anything  
greater than 1570 ohms (greater than 300F), shorted  
anything less than 770 ohms (less than -73F). Which-  
ever stages are operating with this sensor cease to  
control (meaning relays go to OFF and proportional  
outputs go to zero percent).  
4
.
.
Use the X button to scroll forward through each day  
of the week (Monday, Tuesday, Wednesday,  
Thursday, Friday, Saturday, and Sunday).  
While viewing a specific day, use the S and T  
buttons to cycle through the individual relay  
schedules for that day.  
5
This message can also mean that the sensor is pro-  
grammed, but not physically connected.  
When finished, press the home key to return to the home  
display screen.  
-
60°F or 270°F (-51°C or 132°C) Blinking  
Temperature Out of Range — The temperature  
display blinks when the sensed temperature range is  
outside of the display range, below -60°F (-51°C) or  
above 270°F (132°C). The displayed value remains at  
that displayed limit and control continues. Controller  
continues to function unless an open or shorted state  
is detected.  
Blinking relay status  
Relay Minimum Off Time is Active — On the home  
screen, each relay’s indicator („) blinks while the  
relay’s minimum off time is active.  
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34  
SPECIFICATIONS  
T775A/B/M SERIES 2000 CONTROLLER  
SPECIFICATIONS  
DoC  
Power: 24, 120, or 240 Vac; 50/60 Hz;  
A separate earth ground is required for any power source.  
Emissions Compliance  
EN 55022: 2006  
CISPR 22: 2006  
VCCI V-3/2006.04  
ICES-003, Issue 4: 2004  
FCC PART 15 SUBPART B Class B Limit  
Power Consumption:  
•
•
8 VA maximum at 60 Hz  
10 VA maximum at 50 Hz  
Operating & Storage Temperature Ambient Rating:  
•
•
-40°F to 125°F (-40°C to 52°C) @ 50 Hz  
-40°F to 140°F (-40°C to 60°C) @ 60 Hz  
Immunity Compliance  
EN 61000-6-1: 2001 covering  
EN 61000-4-2: 1995 + A1: 1998 + A2: 2001  
EN 61000-4-3: 2002  
Relative Humidity: 5% to 95% non-condensing  
EN 61000-4-4: 2004  
Relay Contact Output Ratings (N.O. and N.C.):  
EN 61000-4-5: 1995 + A1: 2001  
EN 61000-4-6: 1996 + A1: 2001  
EN 61000-4-8: 1993 + A1: 2001  
EN 61000-4-11 2nd Ed.: 2004  
•
•
•
•
1/2 hp; 9.8 AFL, 58.8 ALR @ 120 Vac  
1/2 hp; 4.9 AFL, 29.4 ALR @ 240 Vac  
125 VA pilot duty @ 120/240 Vac  
10A @ 24 Vac (resistive)  
Modulating Outputs:  
Safety Compliance  
UL 60730-1 and Part 2-9 for US and Canada  
•
•
•
•
•
0-10 Vdc; drive a minimum of 2,000 Ohms  
2-10 Vdc; drive a minimum of 2,000 Ohms  
4-20 mA; drive a maximum of 600 Ohms  
Electronic Series 90  
FCC Compliance Statement:  
Floating  
This equipment has been tested and found to comply with  
limits for a Class B digital device, pursuant to Part 15 of  
the FCC rules. These limits are designed to provide  
reasonable protection against harmful interference in  
residential installations. This equipment generates, uses,  
and can radiate radio frequency energy, and if not  
installed and used in accordance with the instructions,  
may cause harmful interference to radio communications.  
However, there is no guarantee that interference will not  
occur in a particular installation. If this equipment does  
cause interference to radio or television equipment  
reception, which can be determined by turning the  
equipment off and on, the user is encouraged to try to  
correct the interference by one or more of the following  
measures:  
—
—
—
Reorient or relocate the receiving antenna  
Move the equipment away from the receiver  
Plug the equipment into an outlet on a circuit different  
from that to which the receiver is connected  
Consult the dealer or an experienced radio/television  
technician for additional suggestions  
—
You are cautioned that any change or modifications to the  
equipment not expressly approve by the party responsible  
for compliance could void Your authority to operate such  
equipment.  
This device complies with Part 15 of the FCC Rules.  
Operation is subjected to the following two conditions 1)  
this device may not cause harmful interference and 2) this  
device must accept any interference received, including  
interference that may cause undesired operation.  
3
5
62-0254–03  
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DOC  
T775A/B/M SERIES 2000 CONTROLLER  
Automation and Control Solutions  
Honeywell International Inc.  
Honeywell Limited-Honeywell Limitée  
35 Dynamic Drive  
1985 Douglas Drive North  
Golden Valley, MN 55422  
customer.honeywell.com  
Toronto, Ontario M1V 4Z9  
®
©
U.S. Registered Trademark  
2007 Honeywell International Inc.  
62-0254–03 M.S. Rev. 09-07  

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