Installing block i/o chapter 3, 24v dc, Ac/dc – Rockwell Automation 1791-XXXX Discrete I/O AC and DC Block I/O Input and Output Modules User Manual
Page 51: L1/+ l2n/- l1/+ l2n

Installing Block I/O
Chapter 3
3-32
Figure 3.22
Input/Output Wiring Connections for the 1791Ć24BR Series B
RIO
1
30
PLC
GND
BLU
CLR
in 00
in 01
in 02
in 03
in 04
in 05
in 06
in 07
NOT
USED
SHD
in 10
in 13
in 14
in 15
in 16
in 17
NOT
USED
in 11
in 12
RET 1 connections are internally connected together.
RET 2 connections are internally connected together.
RET 3 connections are internally connected together.
Vac/dc 4 connections must be externally connected together to accommodate amperage rating.
Output fusing is recommended. Size fuse according to output load and surge current requirements.
in 00
in 01
in 02
in 03
in 04
in 05
in 06
in 07
NOT
USED
out 00
NOT
USED
NOT
USED
NO
CONN
NO
CONN
NO
CONN
NO
CONN
NO
CONN
1
30
24V dc
24V dc
24V dc
24V dc
+
+
+
+
_
_
_
+24
RET
+24
RET
2
RET
2
NOT
USED
RET
1
RET
1
NOT
USED
RET
3
RET
3
Vac/dc
4
out 01
out 02
out 03
out 04
out 05
out 06
out 07
ac/dc
_
NOT
USED
1
2
29
30
1
2
29
30
NOTE:
NOT
USED
RIO
1
30
SLC
GND
BLU
CLR
in 00
in 01
in 02
in 03
in 04
in 05
in 06
in 07
NOT
USED
SHD
NOT
USED
in 00
in 01
in 02
in 03
in 04
in 05
in 06
in 07
NOT
USED
out 00
NOT
USED
NOT
USED
NO
CONN
NO
CONN
NO
CONN
NO
CONN
NO
CONN
1
30
24V dc
24V dc
24V dc
24V dc
+
+
+
+
_
_
_
_
+24
RET
+24
RET
2
RET
2
NOT
USED
RET
1
RET
1
NOT
USED
RET
3
RET
3
out 01
out 02
out 03
out 04
out 05
out 06
out 07
in 08
in 09
in 10
in 11
in 12
in 13
in 14
in 15
NOT
USED
NOT
USED
1
2
29
30
1
2
29
30
Vac/dc
4
L1/+
L2N/-
L1/+
L2N/-
Vac/dc
4
Vac/dc
4
ac/dc