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ControlLogix 7252 LDT Interface Manual
Revision 1.5
Connector Pin Out:
The input connector consists of a Removable Terminal Block with the Rockwell Automation Part Numbers 1756-
TBCH (36 position cage clamp) or 1756-TBS6H (36 position spring clamp). The terminal block is not supplied with
the 7252 module.
Latching Inputs Wiring
The following two diagrams show how you would wire the 7252 module’s opto-coupler latching inputs to either
sourcing or sinking devices.
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
Ex24V
GND 2
Channel 2 Interrogate –
Channel 2 Inter
Channel 2 Return -
Channel 2
Earth Ground 2 (shields)
Latch Input channel 2 -
Latch Input channel 2 +
Ex24V
GND 4
+5Vdc out 2
Earth Ground 1 (shields)
GND 1
Channel 1 Interrogate -
Channel 1 Inter
Channel 1 Return -
Channel 1
Earth Ground 3 (shields)
Latch Input channel 1 –
Latch Input channel 1 +
Earth Ground 4 (shields)
GND3
+5Vdc out 1
+ Latch Input
- Latch Input
Sourcing Devices
Power Supply
+ 8 to 30Vdc
Common
+ Latch Input
- Latch Input
Sinking Devices
Power Supply
+ 8 to 30Vdc
Common
