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T775L SERIES 2000 ELECTRONIC STAND-ALONE STAGING CONTROLLER
Controller Wiring Details
The wiring connection terminals are shown in Fig. 7 and
are described in Table 2 on page 6.
See Fig. 8 – Fig. 12 beginning on page 7 for typical T775L
wiring applications.
KNOCKOUT A
–
T775 BUS
+
–
DIGITAL INPUT
+
KNOCKOUT B
POWER
+
2
C
24 VAC
OUTPUT
NC
RELAY 4
C
NO
OUTPUT
NO
RELAY 1
C
NC
KNOCKOUT C
1
SENSORS A AND B USE THE TWO TT CONNECTIONS AND ARE
POLARITY INSENSITIVE.
2
A SEPARATE EARTH GROUND IS REQUIRED FOR ANY POWER
SOURCE (24, 120, OR 240 VAC).
Fig. 7. T775L Terminal and Feature Locations.
62-0257—11
T
T
T
T
NC
C
NO
NO
C
NC
KNOCKOUT E
Table 2. Description of Wiring Terminal Connections.
Connection
Sensor A
Sensor B
Relay 1
SENSOR A
Relay 2
1
Relay 3
SENSOR B
Relay 4
Input
DI
T775 BUS
24V +
OUTPUT
Common
RELAY 3
POWER
Ground
120/240 VAC
OUTPUT
120 Vac
RELAY 2
Common
KNOCKOUT D
240 Vac
a
A separate earth ground is required for all installations
regardless of the power source (24, 120, or 240 Vac).
NOTE: Relays 5–8 are assigned to the first T775S
Expansion Module, if connected. Relays 9–12
are assigned to the second T775S, if connected.
M24383
WIRING APPLICATION
EXAMPLES
Fig. 8 – 12 beginning on page 6 illustrate typical controller
wiring for various applications.
NOTE: The electronic Series 90 output provided with
modulating T775 models can not drive electro-
mechanical slidewire devices like older Series 3
modulating meters (prior to Series 6), V9055s,
and S984s.
6
Terminal
Label
Description
Sensors
Temperature Sensor; polarity
T T
insensitive
Outputs
NO
COM
120-240 Vac Relay Output
NC
+ -
Digital Input (dry contact)
Interconnect
Terminal Connection to/from
+ -
T775S
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
a
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