Honeywell T775B2024 Installation Instructions Manual

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Honeywell T775B2024 Installation Instructions Manual | Manualzz

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.

Controller

Model a

Description

T775A2009 Standard

Replaces

T775A1001

T775B2016 Standard

T775B2024 Standard

N/A 2

T775C1009 T775D1008 4

SPDT

Relay

Outputs

1

Analog

(Mod)

Outputs b

None

None

None

None

None

T775B2032 Standard

T775B2040 Standard

T775M2006 Modulating

T775A1019 T775B1000 2

T775A1027 T775A1035

T775B1018 T775B1026

T775B1042

4

N/A

T775M2014 Modulating T775G1005 T775G1013

T775G1021 T775G1039

T775M2022 Modulating N/A

None

4

2

2

2

2

4 2

Outputs

None

c

Sensor

Inputs

1

1 2

2

1

2

Floating

N/A

N/A

N/A

N/A

2

2

2

2

2

2 d d

2 d

1

1

1

1

Nbr of

Sensors

Included Enclosure

1 NEMA 1

NEMA 4X

NEMA 1

NEMA 1

1

1

1

1

NEMA 1

NEMA 4X

NEMA 4X

NEMA 1 T775M2030 Modulating T775E1114 T775F1022

T775F1055 T775F1089

T775M2048 Modulating T775E1015 T775E1023

T775E1056 T775E1064

T775E1098

2 2 N/A

2 d 1 NEMA 1 a

All models include a digital input for use with the disable or setback option.

b

The modulating (analog) outputs are 4-20 mA, 0-10 Vdc, 2-10 Vdc, or Series 90 selectable.

c

Each floating output eliminates two SPDT relays.

d

These models can support a high/low modulating limit at Sensor B for temperature control at Sensor A.

62-0254-09

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

Temperature Sensors

a

The controller accepts 1,097 Ohms PTC at 77°F (25°C):

• 50021579-001 – Standard sensor (included with all models except NEMA 4X models)

• T775-SENS-STRAP– Strap on sensor with wiring box

• 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

• C7031B2005 – 6 inch duct mount with wiring box

• 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

Accessories

• 107324A – Bulb Holder, duct insertion

• 107408 – Heat Conductive Compound, 4 ounce

• 50001774-001 – Immersion Well, stainless steel 304,

1/2 in. threading.

Product Changes

Below are the changes to T775A/B/M models starting with

Series 3 (March 2009). Series 3 can be identified by the sideways 3 after the part number on the device label.

1. Modulating high and low limit now both function in either the heat or the cool mode.

2. MIN ON added.

3. SYNC added.

4. Differential and throttling range increased to 300°F.

5. Setpoint and Enable options added to the DI options.

6. HIDE option added to MOD1 and MOD2 (to hide them on the home screen).

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 1/16 (103.4)

1/64 (3.8)

4 1/16 (103.4)

2 11/16 (68.1)

LEFT

8 5/32

(207.1)

7 23/32

(196)

4 13/32 (112.1)

3 31/32 (101)

FRONT VIEW

7/8 (22.5)

1/2 (12.4)

RIGHT

2 13/16 (71.8)

7/8 (22.5)

62-0254—09

7/8 (22.5)

1 (25.5)

BOTTOM

Fig. 1. T775A/B/M Dimensions in inches (mm).

2

M24279

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

BEFORE INSTALLATION

Review the “SPECIFICATIONS” on page 36 before

installing the controller.

When Installing This Product

1. Read these instructions carefully. Failure to follow them could damage the product or cause a hazardous condition.

2. Check ratings given in instructions and on the product to ensure the product is suitable for your application.

3. Installer must be a trained, experienced service technician.

4. After installation is complete, check out product operation as provided in these instructions.

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.

The controller may be mounted in any orientation.

However, mounting in the orientation shown in Fig. 1 on page 2 permits proper viewing of the LCD display and use

of the keypad.

NEMA 4 Enclosure Mounting

For models with NEMA 4 enclosures, ensure that waterproof wire/conduit fittings are used at the knockouts

for all wiring attachments. Refer to Fig. 7 on page 6 for

knockout locations.

IMPORTANT

For NEMA 4 enclosures, be sure to cover and seal all unused open knockouts.

INSTALLATION AND SETUP

The following installation procedures are typically performed in the order listed:

1. Mounting — See “MOUNTING” below.

2. Wiring — See “WIRING” on this page.

3. Checkout — See page 10.

4. Programming — See page 13.

5. Scheduling (optional) — See page 31.

Additional topics are:

• 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 35.

• Troubleshooting begins on page 35.

MOUNTING

This section describes the mounting procedures for the controller and temperature sensor(s).

Controller Mounting

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.

IMPORTANT

The controller must be mounted in a position that allows clearance for wiring, servicing, and removal.

Use a screwdriver to pry out only the knockouts that you will use.

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.

Temperature Sensor(s) Mounting and

Location

Temperature sensors may be located up to 1,000 feet

(304 m) from the T775A/B/M controller. Refer to Table 3 on page 10 for calibration guidelines.

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.

NOTES:

1.

2.

3.

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.

Refer to the list of temperature sensors on

page 2 for this type of installation.

SENSOR

PLACED

IN WELL

USE HEAT

CONDUCTIVE

COMPOUND

1/2 NPT

IMMERSION

WELL

M24470

Fig. 2. Sensor Inserted in Immersion Well.

NOTE: Multiple sensors may be parallel-series wired to sense average temperatures in large spaces.

Refer to Fig. 3 on page 4.

WIRING

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.

The remainder of this section describes the temperature sensor wiring and the T775A/B/M controller wiring.

3 62-0254—09

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

Wiring Connections Access

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.

Temperature Sensor Wiring

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 parallelseries wired must be of the n

2

16, etc.). Refer to Fig. 3.

power (for example, 4, 9,

SENSORS

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.

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.

If any of the above conditions cannot be avoided, use shielded cable.

NOTE: Each T775 controller must be wired to its own sensor(s). However, a benefit of the T775 controller’s accuracy is that there is no more than a 2° F (-7° C) differential between any two

T775 controllers.

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).

Refer to “Temperature Sensor Calibration” on page 10 for

wire size selection where cable runs are longer than 25 feet.

T

T

T

T

SENSOR A

1

SENSOR B

SHIELDED

CABLE

NOTE: SHIELDED CABLE MUST BE

CONNECTED TO AN EARTH

GROUND.

HOWEVER, DO NOT GROUND

SHIELDED CABLE AT SENSOR END.

SHIELDED

CABLE

SENSOR

62-0254—09

1

SENSOR A AND SENSOR B TERMINAL WIRING IS POLARITY INSENSITIVE.

NOTE: TO MINIMIZE NOISE PICKUP,

MAKE SENSOR CONNECTION FROM

SHIELDED CABLE AS CLOSE AS

POSSIBLE TO SENSOR BODY.

Fig. 4. Sensor Wiring — Showing Shielded Cable Connection to Sensor A.

4

M24472

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

Controller Wiring

WARNING

Electrical Shock Hazard.

Can cause severe injury, death or property damage.

Disconnect power supply before beginning wiring, or making wiring connections, to prevent electrical shock or equipment damage.

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.

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.

CAUTION

Equipment Damage Hazard.

Electrostatic discharge can short equipment circuitry.

Ensure that you are properly grounded before handling the unit.

1

See Fig. 7 on page 6 for locating the appropriate power

input, remote sensors input, low voltage, contact closure, and load output terminals.

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:

• Knockouts A and B should be used only for sensor and low-voltage wiring.

• 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.

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

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. Strip 1/2 in. (13 mm) insulation from the conductor.

2. Cut a single wire to 3/16 in. (5 mm). Insert the wire in the required terminal location and tighten the screw.

3. If two or more wires are being inserted into one terminal location, twist the wires together a minimum of three turns before inserting them to ensure proper electrical contact.

4. Cut the twisted end of the wires to 3/16 in. (5 mm) before inserting them into the terminal and tightening the screw.

5. 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.

1/2 (13)

W

2

C

+

2. TWIST WIRES

TOGETHER WITH

PLIERS (A MINIMUM

OF THREE TURNS).

1 NO HIGH VOLTAGE. CLASS 2 WIRING ONLY.

2

EARTH GROUND TERMINAL MUST BE CONNECTED

TO CONDUIT CLAMP LOCALLY.

M24296

Fig. 5. Earth Ground.

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.

IMPORTANT

When wiring the input power, only one source of power can be applied to the T775A/B/M controller (24 Vac or 120 Vac or 240 Vac).

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

GOOD MECHANICAL CONNECTION.

M24473

Fig. 6. Attaching Two or More Wires at Terminal

Blocks.

5 62-0254—09

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

Controller Wiring Details

The wiring connection terminals are shown in Fig. 7 and

are described in Table 2.

See Fig. 8 – 20 beginning on page 6 for typical T775A/B/

M wiring applications.

KNOCKOUT A

MOD 1

2

MOD 2

DIGITAL

INPUT

KNOCKOUT B

3

POWER

24 VAC

OUTPUT

RELAY 4

OUTPUT

RELAY 1

+

B

R

W

B

R

W

+

+

C

+

NC

C

NO

NO

C

NC

T

T

T

T

NC

C

NO

NO

C

NC

SENSOR A

1

SENSOR B

OUTPUT

RELAY 3

POWER

120/240 VAC

OUTPUT

RELAY 2

Table 2. Description of Wiring

Terminal Connections. (Continued)

Connection Terminal Label

DI + -

Description

Input

24 Vac Power

Digital Input (dry contact)

24V +

Common

Ground

+

C

24 Vac Hot

24 Vac Common

Earth Ground b

120 Vac

Common

240 Vac

120

120 or 240 Vac Power

120 Vac Power

COM

240

Common

240 Vac Power a

For Series 90 connections, you must insert a 340 Ohm

resistor across terminals R and W. Refer to Fig. 17 on page 8. The resistor is included with the controller.

b

A separate earth ground is required for all installations regardless of the power source (24, 120, or 240 Vac).

Refer to Fig. 5 on page 5.

KNOCKOUT C KNOCKOUT D

KNOCKOUT E

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

Fig. 7. T775A/B/M Terminal and Feature Locations.

NOTE: Refer to Table 1 on page 1 for the specific

configuration of sensors and outputs supported by the model you are installing.

NOTE: For NEMA 4 enclosures, use waterproof fittings for wiring/conduit connections at knockouts.

WIRING APPLICATIONS

(EXAMPLES)

Fig. 8 – 20 illustrate typical controller wiring for various

applications.

NOTE: The electronic Series 90 output provided with modulating T775 models can not drive electromechanical slidewire devices like older Series 3 modulating meters (prior to Series 6), V9055s, and S984s.

SENSOR A

T

T

L1

(HOT)

L2

24 VAC

Table 2. Description of Wiring

Terminal Connections.

Description Connection Terminal Label

Sensors

Sensor A

Sensor B

T T

Outputs

Relay 1

Relay 2

Relay 3

Relay 4

Mod 1

Mod 2

NO

COM

NC

+ - (Vdc or mA)

W R B (Series 90) a

Temperature Sensor; polarity insensitive

120-240 Vac Relay

Output

Modulating Output

LOAD 1

LOAD 2

NO

COM

C

+

NO

C

NC

NO

C

NC

COM

NO

M24475A

Fig. 8. Wiring for Two-Stage Control – 24 Vac Input and 24 Vac Load.

62-0254—09 6

SENSOR A

T

T

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

SENSOR A

T

T

L1

(HOT)

L2

24 VAC

C

+

LOAD

4

LOAD

1

COM

NO

NO

COM

NC

C

NO

NO

C

NC

NC

C

NO

NO

C

NC

C

+

COM

NO

NO

COM

NC

C

NO

NO

C

NC

NC

C

NO

NO

C

NC

120V

COM

1

LOAD

3

LOAD

2

LOAD

2

LOAD

3

COM

NO

COM

NO

M24476A

Fig. 9. Wiring for Four-Stage Control – 24 Vac Input and 24 Vac Load.

LOAD 1

LOAD 4

1 FOR 240 VAC LOAD, CONNECT TO 240 TERMINAL.

M24478A

Fig. 11. Wiring for Four-Stage Control with 120 or 240

Vac (120 Vac Input and 120 Vac Load Shown).

SENSOR A

120/240 VAC LINE

T

T

C

+

NO

COM

NO

C

NC

1

NO

C

NC

NO

COM

120V

COM

POWER SUPPLY

L1 (HOT)

L2

1

NO

C

NC

BARCODE

NO

C

NC

2

NO

COM

DEVICE

OPEN

COM

CLOSE

COM

NO

1

2 CLOSE RELAY TO DRIVE DEVICE CLOSED. RELAY 2 SHOWN.

(RELAYS 2 AND 4 ARE USED FOR CLOSE).

THE RELAYS MUST BE WIRED IN PAIRS WITH RELAYS 1 AND 2

BEING THE FIRST PAIR, AND RELAYS 3 AND 4 BEING THE SECOND PAIR.

M24479

Fig. 12. Wiring for Floating Output (Relay 1 and Relay

2 Pair Shown).

LOAD 2

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—09

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

ML7984 ACTUATOR

T1 T2 C B R W

HONEYWELL ELECTRONIC

SERIES 90 MODUTROL MOTOR

T1 T2 B R W

1

POWER

OUTPUT

1

MODULATING OUTPUT

TERMINAL (MOD 1)

B

R

W

B

R

W

+

+

Fig. 13. Wiring for ML7984 Valve Actuator

(Using 4 to 20 mA Signal).

M27228

DIGITAL

INPUT

+

M24482

Fig. 14. Wiring for Digital Input (Dry Contact).

HONEYWELL MODUTROL MOTOR WITH

4-20 mA MODULATING INPUT

T1 T2

– +

POWER

OUTPUT

1

MODULATING OUTPUT

TERMINAL (MOD 1)

B

R

W

B

R

W

+

+

POWER

OUTPUT

2

MODULATING

OUTPUT

TERMINAL

(MOD 1)

B

R

W

+

B

R

W

+

3

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

USE SEPARATE TRANSFORMER FOR T775R WHEN USING 24 VAC.

3

INSERT 340 OHM RESISTOR (INCLUDED) ACROSS TERMINALS R AND W.

M24484

Fig. 17. Wiring for Series 90 Modutrol Motor Control.

HONEYWELL

ELECTRONIC SERIES 90

MODUTROL MOTOR

T1 T2 B R W

MINIMUM POSITION

POTENTIOMETER

(Q209)

W R B

2

SPDT CHANGEOVER

(H205 OR H705)

1 POWER

OUTPUT

MODULATING OUTPUT

TERMINAL (MOD 1)

W

B

B

R

R

W

+

+

3

1

USE SEPARATE TRANSFORMER FOR T775R WHEN USING 24 VAC.

M24481

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

USE SEPARATE TRANSFORMER FOR T775R WHEN USING 24 VAC.

2

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

Fig. 18. Wiring for Changeover Relay and

Minimum Position Potentiometer Used with Series 90 Modutrol Motors.

1

POWER

OUTPUT

MODULATING OUTPUT

TERMINAL (MOD 1)

B

R

W

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—09 8

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

B

R

W

B

R

W

+

+

3

MODULATING OUTPUT

TERMINAL (MOD 1)

2

M9184 OR M9185

MODUTROL MOTOR

R

TR

W

TR

B

M9184 OR M9185

MODUTROL MOTOR

R

TR

W

TR

B

M9184 OR M9185

MODUTROL MOTOR

R

TR

W

TR

B

L1

(HOT)

1

L2

1

2

3

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.

INSERT 340 OHM RESISTOR (INCLUDED) ACROSS TERMINALS R AND W.

M24486

Fig. 19. Wiring for Three Series 90 Modutrol Motors.

8

POWER

24 VAC

3

9

+

B

R

W

B

R

W

+

+

6 MINIMUM

POSITION

POTENTIOMETER

(Q209/S963)

W

R

B

5

CHANGEOVER

CONTROLLER

1

W

2

3

R

B

7

M9184 OR M9185

2

MODUTROL MOTOR

R

W

TR

TR

B

M9184 OR M9185

2

MODUTROL MOTOR

R

TR

W

TR

B

M9184 OR M9185

2

MODUTROL MOTOR

R

TR

W

TR

B

L1 (HOT) L2

1

4

C

+

MODULATING OUTPUT TERMINAL (MOD 1)

1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

2 UP TO SIX SIMILAR MOTORS CAN BE CONNECTED IN UNISON.

3 USE RESISTOR BETWEEN R AND B ON THE MOD 1 TERMINAL: 1300 OHMS FOR TWO MOTORS; 910 OHMS FOR THREE MOTORS (4074EAU KIT).

4

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 USE TEMPERATURE CONTROLLER SUCH AS H205 OR H705, OR T675A FOR CHANGEOVER CONTROL.

6

AUTHORITY OF MINIMUM POSITION POTENTIOMETER, IF USED, INCREASES WITH THE NUMBER OF MOTORS IN PARALLEL. WITH ONE MOTOR,

50% 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 USE SEPARATE TRANSFORMER FOR T775 WHEN POWERING FROM 24 VAC.

9 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—09

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

CHECKOUT

Inspect all wiring connections at the controller terminals, and verify compliance with the installation wiring diagrams.

WARNING

Electrical Shock Hazard.

Can cause severe injury, death or property damage.

Disconnect power supply before beginning wiring or making wiring connections, to prevent electrical shock or equipment damage.

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,

120, or 240 Vac).

After the controller is installed and wired, apply power.

Table 3. Temperature Sensor Calibration for

Resistance Loss Due to Wire Length.

14

AWG

Rating m

Ω/ft

2.5

16

18

20

22

4.0

6.4

10.2

16.1

Temperature Offset in

°F (Foot) a

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

3.64

5.82

9.28

14.64

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.

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

-6.0° F (-21° C).

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.

For example, with a wire run of 1,000 feet you must use 20 AWG wire or heavier in order to calibrate for wire loss within the limits of the controller.

See “2.2.2.2. CALIBRATE (the sensor)” on page 18 for

the instructions to enter the calibration value.

14

AWG

Rating m

Ω/m

8.3

16

18

20

22

13.2

21.0

33.5

52.8

100 m

0.44

0.68

1.10

1.74

2.74

Temperature Offset in

°C (Meter) a

200 m

0.86

1.38

2.18

3.48

5.48

300 m

1.30

2.06

3.28

5.22

8.22

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).

RESISTANCE (OHMS)

1489

1403

1317

1231

1145

1059

973

1097 ± 0.08 OHMS

AT 77°F (25°C)

1

887

801

-40 -20 0 20 40 60 80 100 120 140 160 180 200 220 250 °F

1

-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100

TEMPERATURE (DEGREES)

110 120 °C

POSITIVE TEMPERATURE COEFFICIENT (PTC) OF 2.1 OHMS PER °F

M24304

Fig. 21. Sensor Resistance vs. Temperature.

62-0254—09 10

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

INTERFACE OVERVIEW

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.

HOME

RELAYS 1 2 3 4

ON

SENSORS

SENSOR A

78

SENSOR B

84 o

F o

F

MENU AREA

DATA AREA

MOD1 40%

MOD2 60%

DI ON

LOCK ICON

Menu Button

• 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.

Left and Right Arrow Buttons (

W and X

)

Use these buttons to move backward (W) and forward (X) through the Program and Setup menus.

Up and Down Arrow Buttons (

S and T

)

Use these buttons to move your selection up and down through a menu or list.

• 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.

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.

home menu

6 BUTTON KEYPAD

M24488

Fig. 22. LCD Display - Home Screen And Keypad.

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.

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.

Lock Icon – The icon indicates the MENU button is locked and prevents access to the Setup and Program menus.

NOTE: Pressing and holding the HOME and MENU buttons simultaneously for five seconds locks/ unlocks the MENU button.

6-Button Keypad – The keypad is used to access the menus and enter values (See “Using the LCD Panel

Interface”).

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.

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.

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.

HOME

RELAYS 1 2 3 4

ON

SENSORS

SENSOR A

78

SENSOR B

84 o

F o

F

MOD1 40%

MOD2 60%

DI ON

HOME

RELAYS 1 2 3 4

ON

MOD 1 40%

COOL

SETPOINT

74

SENSOR A

62 o F o

F

MOD1 40%

MOD2 60%

DI ON

HOME

RELAYS 1 2 3 4

ON

REL 1 ON

HEAT

SETPOINT

60

SENSOR A

62 o F o

F

RT 12345 HRS

MOD1 40%

MOD2 60%

DI ON

Using the LCD Panel Interface

The 6-button keypad is used to move through the menus and enter or change parameter values.

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.

M24489

Fig. 23. LCD Display - Home Screen Displaying

Sensors, Active Relays, and Mod Outputs.

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.

IMPORTANT

After four minutes of inactivity (no buttons pressed), the LCD display reverts to the home screen display.

11 62-0254—09

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

Accessing the Menus

Menus are used for programming, scheduling, viewing the summary settings, and setup of advanced options.

Programming, Scheduling, and Summary Menus

To access these menus from the home screen, press the

MENU button (See Fig. 24).

MENU DISPLAY WHEN

SCHEDULING IS SET

MENU DISPLAY WHEN

SCHEDULING IS NOT SET

HOME

RELAYS 1 2 3 4

ON

SENSORS

SENSOR A

78

SENSOR B

84 o

F o

F

MOD1 40%

MOD2 60%

DI ON

HOME

RELAYS 1 2 3 4

ON

SENSORS

SENSOR A

78

SENSOR B

84 o

F o

F

MOD1 40%

MOD2 60%

DI ON

MENU

PROGRAM

SCHEDULE

SUMMARY

EXIT

MENU

PROGRAM

EXIT home

menu

home

menu

OR

M24490

Fig. 24. Menus.

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 25).

Setup Menu

To access the Setup menu, press and hold the MENU

button for five seconds (Refer to Fig. 25).

FIVE

SECONDS

SETUP

SENSORS

OUTPUTS

EXIT

M24491

Fig. 25. Setup Menu.

Using the Menus

When you are working with the menus, use the:

• Left arrow button (W) to scroll backward through the menus

• Right arrow button (X) to select the highlighted menu item and display its content

• 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

NOTE: If you press the HOME button or there is no keypad activity for four minutes, you exit

Program mode and return to the home screen.

If you press the MENU button, you exit and return to the menu.

62-0254—09 12

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

1. PROGRAMMING

The controller must be programmed before being placed into service.

IMPORTANT

During programming, the controller is live at all times. For example, the contacts may open and close when adjusting the setpoint.

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.

NOTES:

1.

2.

3.

4.

The controller interface is intuitive. You may find that you do not need the following procedure 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.

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

Program mode and return to the home screen.

If you press the MENU button, you exit

Program mode and return to the menu.

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.

Setpoint High Limit

You can set a single irreversible setpoint high limit maximum value, which is applied to all outputs.

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.

NOTE: You must press all three buttons at exactly the same time for this action to occur.

IMPORTANT

1. This action sets the maximum setpoint value of

all outputs to the setpoint high limit maximum.

2. Setting the high limit setpoint maximum is

irreversible. If you perform the action inadvertently gently and this setpoint adversely affects the control of your system, you must replace the controller.

13 62-0254—09

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

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”

When programming is complete, you may continue with

“3. SCHEDULING” on page 31 or, for advanced options,

continue with “2. SETUP (ADVANCED OPTIONS)” on page 17.

MENU

PROGRAM

MENU

PROGRAM

MOD 1

MOD 2

RELAY 1

RELAY 2

RELAY 3

RELAY 4

EXIT

OR

MENU

PROGRAM

RELAY 1

RELAY 2

RELAY 3

RELAY 4

EXIT

1.1. Entering Program Mode

Press the MENU button, then select PROGRAM and press the X button to view the Program menu.

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.

PROGRAM

RELAY 1

MENU

PROGRAM

RELAY 1

SETPOINT

DIFFRNTL

SENSOR

HEAT/COOL

SETBACK

EXIT

Fig. 27. Program Menu Outputs.

M24493

1.2. Program Menu for Outputs

Press the MENU button, select PROGRAM, then select

RELAY 1 (or MOD 1) to view the parameters. Fig. 27

shows RELAY 1.

NOTE: For MOD 1 and 2, THROT RNG replaces

DIFFRNTL.

NOTE: The Setback parameter displays only if

scheduling is enabled (See Fig. 55 on page 24)

or the DI Option is set to Setback. (See Fig. 58 on page 26).

Continue with “1.2.1. SETPOINT”.

PROGRAM

RELAY 1

SETPOINT

MENU

PROGRAM

RELAY 1

SETPOINT

70

F

ENTER

SETPOINT

FOR

RELAY 1

Fig. 28. Program - Setpoint.

M24494

1.2.1. SETPOINT

1. From the menu, use the S and T buttons to highlight SETPOINT.

2. Press the X button to display the setpoint value.

3. Use the S and T buttons to increase/decrease the desired setpoint temperature.

Default: 70° F (21° C)

Range: -40° to 248° F (-40° to 120° C)

4. Press the X button to accept the setpoint temperature and display the next option.

62-0254—09 14

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

PROGRAM

RELAY 1

DIFFRNTL

MENU

PROGRAM

RELAY 1

DIFFRNTL

20

ENTER

DIFFERENTIAL

FOR

RELAY 1

M24495

Fig. 29. Program - Differential or Throttling Range.

1.2.2. DIFFERENTIAL or THROTTLING RANGE

Differential is used for Relay outputs and Throttling Range is used for Modulating outputs.

1. From the menu, use the S and T buttons to highlight THROT RNG or DIFFERNTL.

2. Press the X button to display the throttling range value.

3. Use the S and T buttons to increase/decrease the desired value.

Default: 20° F (-7° C)

Range: 1° to 300° F (1° to 149° C).

4. Press the X button to accept the value and display the next option.

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 (22° C) and the throttling range is

10° F (-12° C), then the effective throttling temperature range is 67° to 77° F (19° to 25° C). This applies to both modulating outputs and floating outputs.

PROGRAM

1

SENSOR

MENU

PROGRAM

RELAY 1

SENSOR

SENSOR A

SENSOR B

1.2.3. SENSOR

1. From the menu, use the S and T buttons to highlight SENSOR.

2. Press the X button to display the sensor selections.

3. Use the S and T buttons to select Sensor A or B.

4. Press the X button to accept the highlighted sensor and display the next option.

SELECT

SENSOR FOR

RELAY 1

Fig. 30. Program - Sensor.

M24496

PROGRAM

RELAY

HEAT/COOL

MENU

PROGRAM

RELAY 1

HEAT/COOL

HEAT

COOL

SELECT

HEAT/COOL

FOR

RELAY 1

Fig. 31. Program - Heat/Cool.

M24497

1.2.4. HEAT/COOL

1. From the menu, use the S and T buttons to highlight HEAT/COOL.

Default: HEAT

2. Press the X button to display the heat and cool selections.

3. Use the S and T buttons to select Heat or Cool.

4. Press the X button to accept the highlighted selection and display the next option.

15 62-0254—09

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

PROGRAM

1

SETBACK

MENU

PROGRAM

RELAY 1

SETBACK

60 o

F

ENTER

SETBACK

SETPOINT

FOR RELAY 1

M24498

Fig. 32. Program - Setback.

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. 58 on page 26).

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 (21° C) and you want the temperature to drop 10° F during setback mode, enter

60° F (16° C) as the setpoint for this output.

1. From the menu, use the S and T buttons to highlight SETBACK.

2. Use the S and T buttons to increase/decrease the desired setpoint temperature.

Default: 60° F (16° C)

Range: -40° to 248° F (-40° to 120° C)

3. Press the X button to accept the value and display the menu.

1.2.6. Program Next Output

(Mod or Relay)

For the next output (Mod or Relay), select the desired

output from the Program menu (Refer to 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.

MENU

PROGRAM

MOD 1

MOD 2

RELAY 1

RELAY 2

RELAY 3

RELAY 4

EXIT

1.2.7. Exiting Program Mode

Press the HOME button to leave programming mode and return to the home screen.

This completes the programming procedure.

M24499

Fig. 33. Program - Exit.

62-0254—09 16

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

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.

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.

NOTES:

1.

2.

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.

Setup Procedure

The Setup 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.

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

configure only two relays, then only two relays display on the appropriate menus.

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

• 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:

1. Enter Setup mode — see “2.1. Entering Setup

Mode”

2. Setup Sensors — see “2.2. Setting up the Sensors”

3. Setup Outputs — see “2.3. Setting up the Outputs” on page 21

4. Exit Setup Mode — see “2.4. EXIT Setup Mode” on page 30

2.1. Entering Setup Mode

To enter Setup mode, press and hold the MENU button for five seconds to display the Setup menu. Refer to

Fig. 25 on page 12.

SETUP

SENSORS

SETUP

SENSORS

# SENSORS

SENSOR A

SENSOR B

EXIT

2.2. Setting up the Sensors

1. From the Setup menu, use the S and T buttons to highlight SENSORS.

2. Press the X button to display the Sensors menu.

M24500

Fig. 34. Setup - Sensors Menu.

SETUP

SENSORS

# SENSORS

SETUP

SENSORS

# SENSORS

2

ENTER

NUMBER OF

SENSORS

M24501

Fig. 35. Setup - Sensors - Number of Sensors.

2.2.1. Number of SENSORS

The value entered here determines the number of sensors displayed on the home screen.

1. From the Sensors menu, highlight # SENSORS then press the X button to display the number of sensors.

2. Use the S and T buttons to enter the number of sensors (1 or 2).

Default: 2

3. Press the X button to accept the value and display the SENSOR A selection.

17 62-0254—09

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

SETUP

SENSORS

SENSOR A

SETUP

SENSORS

SENSOR A

UNITS

CALIBRATE

LABEL

EXIT

2.2.2. SENSOR A

1. From the Sensors menu, highlight SENSOR A.

2. Press the X button to display the Sensor A selections.

Fig. 36. Setup - Sensors - Sensor A Menu.

M24502

SETUP

SENSORS

SENSOR

UNITS

SETUP

SENSORS

SENSOR A

UNITS

DEG F

DEG C

SELECT

UNITS FOR

SENSOR A

M24503

Fig. 37. Setup - Sensors - Sensor A - Units.

2.2.2.1. UNITS

(° F or ° C)

IMPORTANT

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.

1. From the Sensor A selections, use the S and T buttons to highlight UNITS.

2. Press the X button to display the temperature units.

3. Use the S and T buttons to highlight F or C.

Default: F (Fahrenheit)

4. Press the X button to accept the units and return to the Sensor A selections.

SETUP

SENSORS

SENSOR

CALIBRATE

SETUP

SENSORS

SENSOR A

CALIBRATE

0.0

ENTER

VALUE TO

CALIBRATE

SENSOR A o

F

M24504

Fig. 38. 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. From the Sensor A selections, use the S and T buttons to highlight CALIBRATE.

2. Press the X button to display the calibration degree value.

3. Use the S and T buttons to increase/decrease the desired calibration degrees.

Default: 0.0

Range: +/-10° F (+/-6° C)

4. Press the X button to accept the value and return to the Sensor A selections.

SETUP

SENSORS

A

LABEL

SETUP

SENSORS

SENSOR A

LABEL

SENSOR A

BOILER A

OUTDOOR A

DUCT A

DISCHRG A

CHILLER A

ROOM A

SELECT

LABEL FOR

SENSOR A

M24505

Fig. 39. Setup - Sensors - Sensor A - Label.

62-0254—09

2.2.2.3. LABEL

(the sensor input)

For a sensor already labeled, the display positions to and highlights that label.

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.

You may need to scroll up or down to view all possible labels.

4. Use the X button to accept the highlighted label and exit the list.

NOTE: The label names in list order are: Sensor, Boiler,

Outdoor, Duct, Dischrg, Chiller, Room, Supply,

Return, and Animals.

18

SETUP

SENSORS

SENSOR A

UNITS

CALIBRATE

LABEL

EXIT

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

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.

Fig. 40. Setup - Sensors - Sensor A - Exit.

M24506

SETUP

SENSORS

SETUP

SENSORS

# SENSORS

SENSOR A

SENSOR B

EXIT

SETUP

SENSORS

SENSOR B

CALIBRATE

LABEL

LIMIT

EXIT

2.2.3. SENSOR B

For the T775M2030 and T775M2048 models only, which have a High/Low modulating temperature limit, the LIMIT item displays on the Sensor B menu.

1. From the Sensors menu, use the T button to highlight SENSOR B.

2. Press the X button to display the Sensor B menu.

Fig. 41. Setup - Sensors - Sensor B Menu.

M24507

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.

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.

19 62-0254—09

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

SETUP

SENSORS

SENSOR B

LIMIT

SETUP

SENSORS

SENSOR B

LIMIT

DISABLE

HI LIMIT

LOW LIMIT

SELECT

HI/LOW

LIMIT FOR

SENSOR B

Fig. 42. Setup - Sensors - Sensor B - Limit.

M24508

2.2.4. LIMIT

(Sensor B only)

For the T775M2030 and T775M2048 models only, the

LIMIT item displays on the Sensor B menu.

NOTE: The LIMIT option acts only on Modulating

Output 1.

1. From the Sensors menu, use the T button to highlight SENSOR B.

2. Press the X button to display the Sensor B menu.

3. Use the S and T buttons to select the LIMIT item.

4. Use the X button to display the Limit selections.

5. Use the S and T buttons to select the desired limit,

(Disable, Hi Limit, or Low Limit).

Default: Disable

6. Press the X button to accept the value and return to the Sensor B menu.

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 B

SETUP

SENSORS

SENSOR B

UNITS

CALIBRATE

LABEL

LIMIT

HI LIMIT

THROT RNG

EXIT

SETUP

SENSORS

SENSOR B

HI LIM

90

F

ENTER

VALUE FOR

SENSOR B

HI LIMIT

M24509

Fig. 43. Setup - Sensors - Sensor B - Hi/Low Limit

(showing Hi Limit).

2.2.4.1. HI LIMIT or LOW LIMIT

(Sensor B only)

Fig. 43 shows the High Limit, but the process is the same

for setting the Low Limit.

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.

1. From the Sensor B menu, use the T button to highlight HI LIMIT or LOW LIMIT.

2. Press the X button display the LIMIT value.

3. Use the S and T buttons to increase/decrease the desired Limit value.

4. Press the X button to accept the value and return to the Limit menu.

The high and low limit action will work in either the heat or the cool mode as follows:

• When the low limit is used in the heat mode, the MOD1 output increases to prevent reaching the low limit at sensor B.

• When the high limit is used in the heat mode, the

MOD1 output decreases to prevent reaching the hi limit at sensor B.

• When the low limit is used in the cool mode, the MOD1 output decreases to prevent reaching the low limit at sensor B.

• When the high limit is used in the cool mode, the

MOD1 output increases to prevent reaching hi limit at sensor B.

62-0254—09 20

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

SETUP

SENSORS

SENSOR B

SETUP

SENSORS

SENSOR B

UNITS

CALIBRATE

LABEL

LIMIT

HI LIMIT

THROT RNG

EXIT

SETUP

SENSORS

SENSOR B

THROT RNG

10

F

ENTER

VALUE FOR

SENSOR B

THROTLING

RANGE

M24510

Fig. 44. Setup - Sensors - Sensor B - Throttling

Range.

2.2.4.2. THROTTLING RANGE

(Sensor B only)

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 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

(88°C), and fully closes at 200°F (93°C). Conversely, the throttling range for the low limit begins above the setpoint in the same manner.

1. From the Limit menu, use the T button to highlight

THROT RNG.

2. Use the S and T buttons to increase/decrease the desired value for the Throttling Range.

Default = 0

3. Press the X button to accept the value and return to the Limit menu.

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.

SETUP

OUTPUTS

SETUP

OUTPUTS

MOD 1

MOD 2

# RELAYS

OPTIONS

RELAY 1

RELAY 2

RELAY 3

RELAY 4

EXIT

Fig. 45. Setup - Outputs Menu.

M24511

2.3. Setting up the Outputs

1. From the Setup menu, use the Sand T buttons to highlight OUTPUTS.

2. Press the X button to display the Outputs menu.

NOTE: The menus (e.g. the Outputs menu shown here) 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.

The following procedures set up each modulating output and relay output.

SETUP

OUTPUTS

1

SETUP

OUTPUTS

MOD 1

TYPE

MIN OUT %

INTEGRAL

DERIVATIV

SCHEDULE

HIDE

EXIT

M24512A

Fig. 46. Setup - Outputs - Modulating Output Menu.

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).

2. Press the X button to display the selected MOD menu.

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.

Use the remaining procedures, beginning with “2.3.1.1.

TYPE (of output signal)” on page 22, to set up each

modulating output. If you have two modulating outputs, repeat these procedures for each modulating output.

21 62-0254—09

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

SETUP

OUTPUTS

MOD

TYPE

SETUP

OUTPUTS

MOD 1

TYPE

4 - 20 mA

0-10 V

2-10 V

SERIES 90

SELECT

TYPE FOR

MOD 1

Fig. 47. Setup - Outputs - Mod Out - Type.

M24513

2.3.1.1. TYPE

(of output signal)

1. From the Mod menu, use the S and T buttons to highlight TYPE.

2. Press the X button to display the Type selections.

3. Use the Sand T buttons to highlight the desired output type.

Default: 4-20 mA

4. Press the X button to accept the selected type and return to the Mod menu.

SETUP

OUTPUTS

MOD 1

MIN OUT %

SETUP

OUTPUTS

MOD 1

MIN OUT %

0

ENTER

MINIMUM

PERCENT FOR

MOD 1

%

M24514

Fig. 48. Setup - Outputs - Mod Out - Minimum Output

Percentage.

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.

Using the time clock or digital input to disable the output forces the output to 0%.

1. From the Mod menu, use the S and T buttons to highlight MIN OUT %.

2. Press the X button to display the Min Out %.

3. 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%

4. Press the X button to accept the percentage and return to the Mod menu.

SETUP

OUTPUTS

MOD 1

INTEGRAL

SETUP

OUTPUTS

MOD 1

INTEGRAL

400

SEC

ENTER

INTEGRAL

TIME FOR

MOD 1

M24515

Fig. 49. Setup - Outputs - Mod Out - Integral.

NOTES:

1.

2.

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 response is fast (e.g. discharge air control).

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.

62-0254—09

2.3.1.3. INTEGRAL

1. From the Mod menu, use the S and T buttons to highlight INTEGRAL.

2. Press the X button to display the Integral seconds.

3. Use the S and T buttons to increase/decrease the value from 0 to 3,600 in 10 second increments.

Default: 400 seconds

Range: 0 to 3,600 seconds

4. Press the X button to accept the seconds and return to the Mod menu.

22

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).

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

SETUP

OUTPUTS

MOD 1

DERIVATIV

SETUP

OUTPUTS

MOD 1

DERIVATIV

0

SEC

ENTER

DERIVATIVE

TIME FOR

MOD 1

M24516

Fig. 50. Setup - Outputs - Mod Out - Derivative.

2.3.1.4. DERIVATIVE

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.

1. From the Mod menu, use the S and T buttons to highlight DERIVATIV.

2. Press the X button to display the Derivative seconds.

3. Use the S and T buttons to increase/decrease the value.

Default: 0 (zero)

Range: 0 to 3,600 seconds

4. Press the X button to accept the seconds and return to the Mod menu.

SETUP

OUTPUTS

MOD

SCHEDULE

YES

NO

SETUP

OUTPUTS

MOD 1

SCHEDULE

USE

SCHEDULE

FOR

OUTPUTS

M24517

Fig. 51. Setup - Outputs - Mod Out - Schedule.

2.3.1.5. SCHEDULE

The Schedule option displays only if the USE SCHED

parameter is set to Yes (See “2.3.3.1. USE SCHED” on page 25).

1. From the Mod menu, use the S and T buttons to highlight SCHEDULE.

2. Use the S and T buttons to highlight YES or NO.

Default: YES

3. Press the X button to accept the selection and return to the Mod menu.

Each output can be set up to follow or ignore the built in scheduler. To disable the scheduler for all outputs, see

“2.3.3.1. USE SCHED” on page 25.

SETUP

OUTPUTS

MOD

HIDE

YES

NO

SETUP

OUTPUTS

MOD 1

HIDE

HIDE MOD 1 ON

HOME SCREEN

Fig. 52. Setup - Outputs - Mod 1/2 - Hide.

M28656

2.3.1.6. HIDE

The Hide option is used to prevent the MOD 1 and MOD 2 outputs from displaying on the Home screen.

1. From the Mod menu, use the S and T buttons to highlight HIDE.

2. Use the S and T buttons to highlight YES or NO.

Default: YES

3. Press the X button to accept the selection and return to the Mod menu.

NOTE: The MOD1 and MOD2 outputs are still active even when hidden from the Home screen.

23 62-0254—09

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

SETUP

OUTPUTS

MOD 1

TYPE

MIN OUT %

INTEGRAL

DERIVATIV

SCHEDULE

EXIT

Fig. 53. Setup - Outputs - Mod Out - Exit.

M24518

2.3.1.7. EXIT

Press the W button (or highlight EXIT and press the X button) to exit the Mod menu and return to the Outputs menu.

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”.

SETUP

OUTPUTS

SETUP

OUTPUTS

# RELAYS

4

ENTER

NUMBER OF

RELAYS

M24519

Fig. 54. Setup - Outputs - Number of Relays.

2.3.2. NBR OF RELAYS

1. From the Outputs menu, use the Sand T buttons to highlight # RELAYS.

2. Press the X button to display the number of relays.

3. Use the S and T buttons to display the number from 1 to 4 depending on the model. (See notes below.)

4. Press the X button to accept the value and display the Outputs menu.

NOTES:

1.

2.

The T775A/B/M models have the following outputs available:

T775A20191 relay output

T775B2016up to 2 relay outputs

T775B2024up to 4 relay outputs

T775B2032up to 2 relay outputs

T775B2040up to 4 relay outputs

T775M2006no relay outputs

T775M2014up to 4 relay outputs

The number of relay outputs entered here determines how many relays display on the home screen.

SETUP

OUTPUTS

OPTIONS

SETUP

OUTPUTS

OPTIONS

USE SCHED

MIN OFF

MIN ON

DI OPTS

SHOW RT

SYNC

EXIT

2.3.3. OPTIONS

1. From the Outputs menu, use the Sand T buttons to highlight OPTIONS.

2. Press the X button to display the Options menu.

Fig. 55. Setup - Outputs - Options Menu.

M24520A

62-0254—09 24

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

SETUP

OUTPUTS

OPTIONS

USE SCHED

YES

NO

SETUP

OUTPUTS

OPTIONS

USE SCHED

USE

SCHEDULE

FOR

OUTPUTS

M24521

Fig. 56. Setup - Outputs - Options - Schedule.

2.3.3.1. USE SCHED

1. Press the X button to display the schedule selections.

2. Use the Sand T buttons to highlight YES or NO.

Default: NO

3. Press the X button to accept the value and display the MIN OFF option.

Selecting NO disables scheduling for all 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.

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.

SETUP

OUTPUTS

OPTIONS

MIN OFF

OR

MIN ON

SETUP

OUTPUTS

OPTIONS

MIN OFF

SETUP

OUTPUTS

OPTIONS

MIN ON

0

SEC

ENTER

MINIMUM

OFF TIME

FOR RELAYS

0

SEC

ENTER

MINIMUM

ON TIME

FOR RELAYS

M24522A

Fig. 57. Setup - Outputs - Options - Min Off/On Time.

2.3.3.2. MIN OFF or MIN ON

This is the minimum number of seconds of “off time” or

“on time” for all relays.

1. Press the X button to display the Min Off/On value.

2. Use the S and T buttons to increase/decrease the desired number of seconds from 0 to 990 seconds in 10 second increments.

Default: 0 (zero)

Range: 0 to 990 seconds

3. Press the X button to accept the seconds and display the DI OPTIONS.

NOTES:

1.

2.

3.

The minimum OFF or ON time applies to all relay outputs.

When minimum OFF or ON time is active, relays waiting to be energized display a flashing square underneath the relay number on the home screen.

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.

25 62-0254—09

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

SETUP

OUTPUTS

OPTIONS

DI OPTS

SETUP

OUTPUTS

OPTIONS

DI OPTS

DISABLE

SETPOINT

SETBACK

ENABLE

IGNORE

SELECT DI

OPTIONS

FOR

OUTPUTS

M24523A

Fig. 58. Setup - Outputs - Options - DI Options.

2.3.3.3. DI OPTIONS

(digital input options)

The DI Option you select applies to all outputs. This option overrides any Setpoint/Setback values entered in the Schedule.

1. Press the X button to display the DI Option selections.

2. Use the S and T buttons to highlight DISABLE,

SETBACK, or IGNORE.

Default: DISABLE

3. Press the X button to accept the value and display the SHOW RT option.

When the digital input (DI) closes, all outputs follow the DI option value (Disable, Setback, or Ignore):

DISABLE disables the outputs; relays return to deenergized state and Mod outputs return to 0% output.

SETPOINT forces the control to the setpoint temperature.

SETBACK enables a setback temperature value to be programmed for each output and forces the control to the setback temperature.

— To program the Setback temperature, see Fig. 32 on page 16.

ENABLE energizes all relays and MOD outputs to

100%. Use this option carefully.

IGNORE causes the digital input to have no effect on the Relay or Mod outputs.

SETUP

OUTPUTS

OPTIONS

SHOW RT

YES

NO

SETUP

OUTPUTS

OPTIONS

SHOW RT

USE

RUNTIME

FOR

RELAYS

M24524

Fig. 59. Setup - Outputs - Options - Show Runtime.

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

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.

NOTE: Run times can be reset to zero for each individual 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 29.

SETUP

OUTPUTS

OPTIONS

SYNC

NO

YES

SETUP

OUTPUTS

OPTIONS

SYNC

ALL

SETPTS

CHANGE

Fig. 60. Setup - Outputs - Options - Sync.

M28657

62-0254—09

2.3.3.5. SYNC

(synchronize setpoint changes)

1. Press the X button to display the Sync values.

2. Use the S and T buttons to select YES or NO.

Default: NO

3. Press the X button to accept the value and return to the Options menu.

Depending on the model, selecting YES causes all setpoints for all relays and MODs to sync to any change to:

• Relay 1 for models without MOD outputs

• MOD1 for models with MOD outputs

For example, assume the MOD1 setpoint is 110°F, MOD2 is 115°F, and Relay 1 is 120°F. With SYNC=YES, when the MOD1 setpoint is adjusted to 112°F (increase 2°F), then MOD2 and all other relay setpoints increase by 2°F.

Thus the MOD2 setpoint is now 117°F and the relay 1 setpoint is 122°F.

26

SETUP

OUTPUTS

OPTIONS

USE SCHED

MIN OFF

DI OPTION

SHOW RT

EXIT

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

2.3.3.6. Exit Options Setup

Press the W button (or highlight EXIT and press the X button) to exit and return to the Outputs menu.

Continue with “2.3.4. Setting up the Relays”

Fig. 61. Setup - Outputs - Options - Exit.

M24525

SETUP

OUTPUTS

1

SETUP

OUTPUTS

RELAY 1

TYPE

SCHEDULE

RESET

RESET RT

EXIT

Fig. 62. Setup - Outputs - Relay Menu.

M24526

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).

2. Press the X button to display the selected relay menu.

The TYPE selection shown in Fig. 62 displays only for

Relay 1 and Relay 3.

Continue with the remainder of section 3.4 to setup the relay outputs.

SETUP

OUTPUTS

RELAY 1

TYPE

SETUP

OUTPUTS

RELAY 1

TYPE

STANDARD

FLOATING

SELECT

TYPE FOR

RELAY 1

Fig. 63. Setup - Outputs - Relay - Type.

M24527

2.3.4.1. TYPE

(standard or floating)

The Floating option is only available on the T775B2016,

T775B2024, T775B2032, and T775B2040 models.

For these models, this selection displays only for Relay 1 and/or Relay 3.

1. Press the X button to display the Type values.

2. Use the S and T buttons to select STANDARD OR

FLOATING.

Default: STANDARD (not floating)

3. Press the X button to accept the value and return to the Relay menu.

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 29.

27 62-0254—09

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

SETUP

OUTPUTS

1

SETUP

OUTPUTS

FLOAT 1

TYPE

ACTUATOR

INTEGRAL

DERIVATIV

SCHEDULE

RESET

EXIT

M24528

Fig. 64. Setup - Outputs - Floating Relay - Menu.

2.3.4.1.1. Floating Relay Menu

The Floating option is only available on the T775B2016,

T775B2024, T775B2032, and T775B2040 models.

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. 64.

SETUP

OUTPUTS

FLOAT 1

ACTUATOR

SETUP

OUTPUTS

FLOAT 1

ACTUATOR

90

SEC

ENTER

ACTUATOR

TIMING FOR

FLOAT 1

M24529

Fig. 65. Setup - Outputs - Floating Relay - Actuator.

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.

1. From the menu, use the S and T buttons to highlight ACTUATOR.

2. Press the X button to display the actuator value.

3. Use the S and T buttons to increase/decrease the desired number of seconds.

Default: 90 seconds

Range: 0 to 3,600 seconds)

4. Press the X button to accept the value and display the INTEGRAL option.

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

INTEGRAL

400

SEC

ENTER

INTEGRAL

TIME FOR

FLOAT 1

M24530

Fig. 66. Setup - Outputs - Floating Relay - Integral.

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.

1. From the menu, use the S and T buttons to highlight INTEGRAL.

2. Press the X button to display the actuator value.

3. Use the S and T buttons to increase/decrease the desired number of seconds.

Default: 400 seconds

Range: 0 to 3,600 seconds)

4. Press the X button to accept the value and display the DERIVATIV option.

See Integral NOTES on page 22 for additional information

about setting the Integral time.

62-0254—09 28

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

SETUP

OUTPUTS

FLOAT 1

DERIVATIV

SETUP

OUTPUTS

FLOAT 1

DERIVATIV

0

SEC

ENTER

DERIVATIVE

TIME FOR

FLOAT 1

M24531

Fig. 67. Setup - Outputs - Floating Relay - Derivative.

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.

1. From the menu, use the S and T buttons to highlight DERIVATIV.

2. Press the X button to display the actuator value.

3. Use the S and T buttons to increase/decrease the desired number of seconds.

Default: 0 seconds

Range: 0 to 3,600 seconds)

4. Press the X button to accept the value and display the SCHEDULE option.

Continue with “2.3.4.2. SCHEDULE” for the remaining relay selections.

SETUP

OUTPUTS

RELAY 1

SCHEDULE

YES

NO

SETUP

OUTPUTS

RELAY 1

SCHEDULE

USE

SCHEDULE

FOR

OUTPUTS

Fig. 68. Setup - Outputs - Relay - Schedule.

M24532

2.3.4.2. SCHEDULE

This selection displays only if “Use Sched = YES” is

selected during the Output Options setup (see “2.3.3.1.

USE SCHED” on page 25). When selected, individual

outputs default to follow the schedule.

1. Press the X button to display the Schedule values.

2. Use the S and T buttons to select YES or NO.

Default: YES

3. Press the X button to accept the value and return to the Relay menu.

An individual output can be selected to be controlled or not controlled by the schedule.

If NO is selected, the Setback selection does not appear in the Program menu for this output.

SETUP

OUTPUTS

RELAY 1

RESET RT

YES

NO

SETUP

OUTPUTS

RELAY 1

RESET RT

RESET

RUN TIME

FOR

RELAY 1

M24533

Fig. 69. Setup - Outputs - Relay - Reset Runtime.

2.3.4.3. RESET RT

(run time hours)

This selection displays only if “Show RT = YES” is

selected during Output Options setup (see “2.3.3.4.

SHOW RT (show run time hours)” on page 26).

1. From the Relay menu, press the X button to display the Reset RT values.

2. Use the S and T buttons to select YES or NO.

Default: NO

3. Press the X button to accept the value and return to the Relay menu.

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.

NOTE: Run times can be reset to zero for each individual relay. You must do this for each relay that you want to reset to zero.

29 62-0254—09

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

SETUP

OUTPUTS

RELAY 1

RESET

SCHEDULE

RESET RT

EXIT

Fig. 70. Setup - Outputs - Relay - Exit.

M24534

2.4. EXIT Setup Mode

Press the W button to exit the selected relay set up and return to the Outputs menu.

To setup the next relay output go to “2.3.4. Setting up the

Relays” on page 27.

If you are finished setting up the relay outputs, press the

HOME button to exit Setup mode and return to the home screen display.

This completes the Setup procedure.

62-0254—09 30

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

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.

IMPORTANT

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

“2.3.3.1. USE SCHED” on page 25).

IMPORTANT

To properly account for Daylight Saving time, be sure to set the Date before setting the Time.

See “3.2.2. SET DATE” on page 32.

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 page 29.

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.

NOTES:

1.

2.

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.

If you press the MENU button, you exit

Scheduling mode and return to the menu.

To create or change a schedule, you use the —

• Left arrow button (W) to scroll backward through the

Schedule menus

• Right arrow button (X) to select the highlighted menu item and display its content

• 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

Creating a Schedule

To create a schedule, perform the following in the order listed:

1. Enable Scheduling in Setup mode - See “2.3.3.1.

USE SCHED” on page 25

2. Enter Schedule mode — See “3.1. Entering

Schedule Mode”

3. Set the Schedule Options — See “3.2. OPTIONS”

4. Set Individual Schedules — begin with “3.3. Setting

Individual Schedules” on page 33

5. Exit Schedule Mode — See “3.4. Exiting Scheduling

Mode” on page 34

MENU

SCHEDULE

MENU

SCHEDULE

OPTIONS

MON-FRI

SAT-SUN

MONDAY

TUESDAY

WEDNESDAY

THURSDAY

FRIDAY

SATURDAY

SUNDAY

EXIT

Fig. 71. Schedule - Menu.

M24536

3.1. Entering Schedule Mode

Press the MENU button, then select SCHEDULE and press the X button to view the Schedule menu.

MENU

SCHEDULE

OPTIONS

MENU

SCHEDULE

OPTIONS

SET TIME

SET DATE

DAYLIGHT

EXIT

3.2. OPTIONS

1. From the Schedule menu, use the S and T buttons to highlight OPTIONS.

2. Press the X button to display the Options menu.

Fig. 72. Schedule - Options Menu.

M24537

31 62-0254—09

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

MAIN

SCHEDULE

OPTIONS

SET TIME

MAIN

SCHEDULE

OPTIONS

SET TIME

08:12 AM

SET

SYSTEM

TIME

Fig. 73. Schedule - Options - System Time.

M24538

3.2.1. SET TIME

Setting the system time is required to enable the controller to follow daylight saving time.

IMPORTANT

Set the Date before setting the Time. See

“3.2.2. SET DATE”.

1. From the Options menu, use the S and T buttons to highlight SET TIME.

2. Press the X button to display the current system time setting.

3. Use the X button to cycle between the hour, minute, and AM/PM values.

4. Use the S and T buttons to increase/decrease the desired value for the hour, minute, and AM/PM.

5. Press the W button to accept the Time and return to the Options menu.

MAIN

SCHEDULE

OPTIONS

SET DATE

MAIN

SCHEDULE

OPTIONS

SET DATE

01/01/2007

SET

SYSTEM

DATE

Fig. 74. Schedule - Options - System Date.

M24539

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.

1. From the Options menu, use the S and T buttons to highlight SET DATE.

2. Press the X button to display the current system date setting.

3. Use the X button to cycle between the month, day, and year values.

4. Use the S and T buttons to increase/decrease the desired value for the month, day, and year.

5. Press the W button to accept the Date and return to the Options menu.

MAIN

SCHEDULE

OPTIONS

DAYLIGHT

YES

NO

MAIN

SCHEDULE

OPTIONS

DAYLIGHT

USE

DAYLIGHT

SAVING

TIME

M24540

Fig. 75. Schedule - Options - Daylight Saving Time.

3.2.3. DAYLIGHT

(daylight saving time)

1. From the Options menu, use the S and T buttons to highlight DAYLIGHT.

2. Press the X button to display the current system setting for daylight saving time.

3. Use the S and T buttons to select YES or NO.

Default: YES

4. Press the X button to accept the value and return to the Options menu.

5. From the Options menu, use the Use the S and T buttons to highlight EXIT.

6. Press the X button to return to the Schedule menu.

62-0254—09 32

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

MENU

SCHEDULE

MON-FRI

MENU

SCHEDULE

MON-FRI

E1 SETPT

E1 TIME

E2 SETPT

E2 TIME

EXIT

M24541

Fig. 76. Schedule Event Menu (Showing MON-FRI).

3.3. Setting Individual Schedules

As shown in the Schedule menu (Fig. 71 on page 31),

schedules can be set for the following time periods:

• Monday through Friday

• Saturday and Sunday

• Individual days of the week

1. From the Schedule menu, use the S and T buttons to highlight the desired time period.

2. Press the X button to display the Schedule menu for the selected time period.

For each selected time period, the schedule event (E1 and E2) parameters are exactly the same as shown in

Fig. 76.

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

Mon-Fri Event 1 (E1) Setpoint

TIME

6:00 AM a

Mon-Fri Event 2 (E2) Setback

6:00 PM b

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

SCHEDULE

MON-FRI

E1 SETPT

MENU

SCHEDULE

MON-FRI

E1 SETPT

SETPOINT

SETBACK

NOT USED

SELECT

SETPOINT

FOR

EVENT 1

Fig. 77. Schedule - Event 1 Setpoint.

M24542

3.3.1. E1 SETPT

(setpoint for event 1)

1. From the selected time period menu, use the S and

T buttons to highlight E1 SETPT.

2. Press the X button to display the setpoint options.

3. 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.

33 62-0254—09

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

MAIN

SCHEDULE

MON-FRI

E1 TIME

MAIN

SCHEDULE

MON-FRI

E1 TIME

6:00 AM

SET

TIME

FOR

EVENT 1

Fig. 78. Schedule - Event 1 Time.

M24543

3.3.2. E1 TIME

(time for event 1)

1. From the selected time period menu, use the S and

T buttons to highlight E1 TIME.

2. Press the X button to display the current time setting for event 1.

3. Use the X button to cycle between the hour, minute, and AM/PM values.

4. Use the S and T buttons to increase/decrease the desired value for the hour, minute, and AM/PM.

5. Press the W button to accept the time and return to the selected time period menu.

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 33.

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

1)” above.

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. 71 on page 31) 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.

62-0254—09 34

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

SUMMARY MENU

The Summary menu provides the ability to view the schedule (E1 and E2 times) for each relay for each day of the week.

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 “2.3.3.1. USE SCHED” on page 25).

TROUBLESHOOTING

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.

MENU

SUMMARY

MENU

SUMMARY

MONDAY

RELAY 1-2

E1: 06:00AM (72)

E2: 06:00PM (65)

M24545

Fig. 79. Summary Example - Monday Settings.

For each relay, the Summary display indicates the time and temperature (in parenthesis) for each of the two scheduled events E1 and E2.

1. Press the MENU button to view the menu.

2. Use the S and T buttons to highlight SUMMARY.

3. Press the X button to display the Summary settings.

4. Use the X button to scroll forward through each day of the week (Monday, Tuesday, Wednesday,

Thursday, Friday, Saturday, and Sunday).

5. While viewing a specific day, use the S and T buttons to cycle through the individual relay schedules for that day.

When finished, press the home key to return to the home display screen.

Errors and Diagnostics

The controller provides an error message and diagnostic status as described below.

Error Message

There is a two-character error code that displays in response to controller software problems:

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.

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:

– –

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).

Whichever stages are operating with this sensor cease to control (meaning relays go to OFF and proportional outputs go to zero percent).

This message can also mean that the sensor is programmed, but not physically connected.

-60° or 270° F (-51° 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.

35 62-0254—09

T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS

SPECIFICATIONS

Power: 24, 120, or 240 Vac; 50/60 Hz;

A separate earth ground is required for any power source.

Power Consumption:

• 8 VA maximum at 60 Hz

• 10 VA maximum at 50 Hz

Operating & Storage Temperature Ambient Rating:

• -40° to 125° F (-40° to 52° C) @ 50 Hz

• -40° to 140° F (-40° to 60° C) @ 60 Hz

Relative Humidity: 5% to 95% non-condensing

Relay Contact Output Ratings (N.O. and N.C.):

• 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:

• 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

• Floating

DOC

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

Immunity Compliance

EN 61000-6-1: 2001 covering

EN 61000-4-2: 1995 + A1: 1998 + A2: 2001

EN 61000-4-3: 2002

EN 61000-4-4: 2004

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

Safety Compliance

UL 60730-1 for US and Canada

FCC Compliance Statement:

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.

Automation and Control Solutions

Honeywell International Inc.

Honeywell Limited-Honeywell Limitée

1985 Douglas Drive North

Golden Valley, MN 55422 customer.honeywell.com

35 Dynamic Drive

Toronto, Ontario M1V 4Z9

® U.S. Registered Trademark

© 2009 Honeywell International Inc.

62-0254—09 M.S. Rev. 02-09

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Key Features

  • NEMA 4X weatherproof enclosure for outdoor and wet environments
  • Capable of remote sensing of temperature
  • Provides switched or proportional outputs to control various loads
  • Analog (modulating) outputs for use with actuators and motors
  • Standard version of T775 model
  • Supports multiple sensor inputs for temperature control

Related manuals

Frequently Answers and Questions

What type of enclosure does this model have?
This model has a NEMA 4X weatherproof enclosure.
Can it be used outdoors?
Yes, its NEMA 4X enclosure makes it suitable for outdoor use.
What kind of loads can it control?
It can control various types of loads, providing either switched or proportional outputs.