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T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER
Controller Wiring Details
The wiring connection terminals are shown in Fig. 11 and
are described in Table 2. See Fig. 12 – Fig. 19 beginning
on page 9 for typical T775U wiring applications.
Fig. 11. T775U Terminal and Feature Locations.
KNOCKOUT A
B
MOD 1
–
R
+
W
2
B
MOD 2
–
R
+
W
–
DIGITAL
+
INPUT
KNOCKOUT B
POWER
+
C
3
24 VAC
OUTPUT
NO
RELAY 1
C
NC
KNOCKOUT C
Terminal
Connection
Label
C – common
S – signal
V – voltage
a
Sensor A
S and V
T T
Sensor B
T T
DI
+ -
Relay 1
NO / COM /
NC
Relay 2
a
For applications that do not use Reset, only Sensor A is available for use.
b
For Series 90 connections, you must insert a 340 Ohm resistor across terminals R and W. See Fig. 18 on page 10.
The resistor is included with the controller.
c
A separate earth ground is required for all installations regardless of the power source (24, 120, or 240 Vac).
62-0255—09
–
C
T
+
S
T
V
T
T
NO
C
NC
KNOCKOUT E
Table 2. Description of Wiring Terminal Connections.
Description
Sensors
0-10 Vdc input: Universal
sensor for humidity, pressure,
temperature, etc.
4-20mA input; see Fig. 7 on
page 6
Temperature Sensor; polarity
insensitive
Temperature Sensor; polarity
insensitive
Input
Digital Input (dry contact)
Outputs
120-240 Vac Relay Output
SENSOR A
1
SENSOR B
POWER
120/240 VAC
1
WHEN USED FOR TEMPERATURE OR 4-20mA SENSING, SENSORS A
AND B USE THE TWO TT CONNECTIONS AND ARE POLARITY
OUTPUT
INSENSITIVE.
RELAY 2
2
FOR MOD 1 AND MOD 2 CURRENT (mA) OR VOLTAGE (VDC) OUTPUT,
USE SIGNAL (+) & COMMON (-).
KNOCKOUT D
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)
Connection
Mod 1
Mod 2
24V +
Common
Ground
120 Vac
Common
240 Vac
8
Terminal Label
Outputs
+ - (Vdc or mA)
Modulating Output
b
W R B (Series 90)
24 Vac Power
+
24 Vac Hot
-
24 Vac Common
Earth Ground
120 or 240 Vac Power
120
120 Vac Power
COM
Common
240
240 Vac Power
M24553A
Description
c
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