T775A/B/M SERIES 2000 CONTROLLER

Controller Wiring Details

The wiring connection terminals are shown in Fig. 7 and are described in Table 2.

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

KNOCKOUT A

 

 

 

 

 

 

 

B

T

 

 

SENSOR A

 

MOD 1

T

 

 

 

 

 

 

 

R

 

 

 

1

 

2

W +

T

 

 

 

 

 

SENSOR B

 

B

 

 

 

MOD 2

T

 

 

 

 

 

 

 

R

 

 

 

 

 

 

 

 

 

 

 

 

W +

 

 

 

 

 

DIGITAL

 

 

 

 

 

+

 

 

 

 

 

INPUT

 

 

 

 

 

KNOCKOUT B

 

 

 

 

 

3

POWER

C +

 

 

 

 

 

24 VAC

 

 

 

 

OUTPUT

 

 

 

 

 

 

 

 

 

 

 

 

RELAY 3

 

OUTPUT

NC

NC

 

 

POWER

 

RELAY 4

120

COM 240

120/240 VAC

 

C

C

 

 

 

 

 

NO

NO

 

 

OUTPUT

NO

 

NO

 

OUTPUT

 

 

 

RELAY 2

 

RELAY 1

C

 

C

 

 

 

 

 

 

 

NC

 

NC

 

 

KNOCKOUT C

 

 

 

 

KNOCKOUT D

KNOCKOUT E

1SENSORS A AND B USE THE TWO TT CONNECTIONS AND ARE POLARITY INSENSITIVE.

2FOR 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.

3A SEPARATE EARTH GROUND IS REQUIRED FOR ANY POWER

SOURCE (24, 120, OR 240 VAC).

M24474

WIRING APPLICATIONS (EXAMPLES)

Table 2. Description of Wiring

Terminal Connections. (Continued)

 

 

 

 

Connection

Terminal Label

Description

 

 

 

 

 

Input

 

 

 

 

 

DI

+ -

Digital Input (dry

 

 

contact)

 

 

 

 

 

 

24 Vac Power

 

 

 

 

 

24V +

+

24 Vac Hot

 

 

 

 

Common

C

24 Vac Common

 

 

 

 

Ground

 

Earth Ground

b

 

 

 

 

 

 

 

 

120 or 240 Vac Power

 

 

 

 

120 Vac

120

120 Vac Power

 

 

 

 

Common

COM

Common

 

 

 

 

240 Vac

240

240 Vac Power

 

 

 

 

aFor 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.

bA separate earth ground is required for all installations regardless of the power source (24, 120, or 240 Vac). See Fig. 5 on page 5.

WIRING APPLICATIONS (EXAMPLES)

Fig. 8 – 20 illustrate typical controller wiring for various applications.

SENSOR A

T

T

Fig. 7. T775A/B/M terminal and feature locations.

NOTE: Refer to Table 1 on page 1 for the specific con- figuration 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.

Table 2. Description of Wiring

Terminal Connections.

L1

(HOT)

L2

24 VAC

LOAD 1

LOAD 2

 

C +

NO

NO

COM

C

 

 

NC

NO

C

NC

 

 

 

Connection

Terminal Label

Description

 

 

 

 

Sensors

 

 

 

 

Sensor A

T T

Temperature Sensor;

Sensor B

polarity insensitive

 

 

 

 

 

Outputs

 

 

 

 

Relay 1

 

 

Relay 2

NO

120-240 Vac Relay

Relay 3

COM

Output

Relay 4

NC

 

 

 

 

Mod 1

+ - (Vdc or mA)

Modulating Output

Mod 2

W R B (Series 90)a

COM

NO

M24475A

Fig. 8. Wiring for two-stage control – 24 Vac input and

24 Vac load.

62-0254–03

6

Page 14
Image 14
Honeywell AC-220-7 Wiring Applications Examples, Controller Wiring Details, Connection Terminal Label Description Sensors

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