Rockwell Automation 1791-XXXX Discrete I/O AC and DC Block I/O Input and Output Modules - Manual (Page 36)

Installing Block I/O
Chapter 3
3-17
Connections
1791-24A8 Series B Connector/Terminal
Connections
Designation Description Left Conn. Right Conn.
Power
L1 ac hot 1
Power
Connections N ac neutral 3
GND Chassis ground 2 1
Remote I/O
BLU Blue wire - RIO 6
Remote I/O
Connections CLR Clear wire - RIO 8
SHD Shield - RIO 7
I/O Connections
in 00 thru in 07 Input 00 thru 07
16, 18, 20, 22,
24, 26, 28, 30
Input
COM 1 L2/N Input Common 10, 12, 14 2
Input
(G) 6
COM 2 L2/N Input Common 9, 11, 13 3
PLC: in 10 thru in 17
SLC: in 08 thru in 15
PLC: Input 10 thru 17
SLC: Input 08 thru 15
15, 17, 19, 21,
23, 25, 27, 29
Input
(G + 1) 7
in 00 thru in 07 Input 00 thru 07
15, 13, 11, 9, 7, 5,
3, 1
(G + 1) 7
COM 3 L2/N Input Common 17, 19, 21 4
Output
L1-4 L1 Output Supply 22, 20, 18 5
Output
(G) 8 PLC: out 00 thru out 07
SLC: out 00 thru out 07
PLC: Output 00 thru 07
SLC: Output 00 thru 07
16, 14, 12, 10, 8,
6, 4, 2
Not used
For internal test only;
not for customer use.
4, 5 29, 27, 26
No Conn
No internal connection;
customer can use.
30, 28, 25, 24, 23
1 Connect chassis ground to equipment grounding stud. These are not internally connected.
2 Left connector terminals 10, 12 and 14 are internally connected together.
3 Left connector terminals 9, 11 and 13 are internally connected together.
4 Right connector terminals 21, 19 and 17 are internally connected together.
5 Right connector terminals 22, 20 and 18 must be externally connected to accommodate total amperage.
6 (IN G) = input module group (1 word).
7 IN (G+1) = input module group plus 1 word.
8 OUT (G) = output module group (1 word).