AB Quality ALLEN-BRADLEY 1791 User Manual page 27

Table 2.B
Wiring Block Designations for Cat. No. 1791 N4V2
Connections Connections
Designation
L1
Power Power
Connections
N
GND
Transducer
+24V
2
Power
BLU
Remote I/O Remote I/O
Connections
CLR
SHD
inV0 thru inV3
Voltage Input
RET in0 thru
RET in3
inI0 thru inI3
Current Input
RET in0 thru
RET in3
Input Ground GNDin0 GNDin3
out 0 - RET out 0
Output Output
out 1 - RET out 1
Not used
1
Connect chassis ground to equipment grounding stud. These are not internally connected.
2
20 28V dc (nominal 24V, 100mA)) voltage source for accommodating loop powered current transducer inputs.
3
Terminals 12, 16, 20, and 24 are internally connected.
4
Terminals 26 and 28 internally connected together.
Chapter 2
Installing Block I/O
1791-N4V2
Description
ac hot
ac neutral
Chassis ground
For current input only
Blue wire - RIO
Clear wire - RIO
Shield - RIO
I/O Connections
Voltage Input 0 through 3
Input Return 0 through 3
Current Input 0 through 3
Input Return 0 through 3
Channels 0 3 ground
Output 0 (+)
Return output 0 (-)
Output 1 (+)
Return output 1 (-)
For internal test only; not
for customer use.
Terminal No.
1
3
1
2
25
6
8
7
9, 13, 17, 21
10, 14, 18, 22
11, 15, 19, 23
10, 14, 18, 22
3
12, 16, 20, 24
27
4
26
29
4
28
4, 5, 30
2-9