Allen-Bradley 1606-XLBRED20, Reference Manual, Page: 16 / 18

16 Rockwell Automation Publication 1606-RM111A-EN-P - July 2020
Example: 1+1 Redundancy
Up To 10 A
1+1 Redundancy up to 10 A requires two 10 A power supplies and one
1606-XLBRED20 redundancy module. Use separate mains systems for each
power supply whenever it is possible. The power supplies in
Figure 16 can be
either are 1606-XLX240EE or 1606-XLB240E.
Figure 16 - Wiring Diagram, 1+1 Redundancy, 10 A Output Current
Example: 1+1 Redundancy
Up To 20 A
1+1 Redundancy up to 20 A requires two 20 A power supplies and two
1606-XLBRED20 redundancy modules. Use separate mains systems for each
power supply whenever it is possible. The power supply in
Figure 16 is a
1606-XLB480E.
Figure 17 - Wiring Diagram, 1+1 Redundancy, 20 A Output Current
Failure
Monitor
24V, 10 A
Load
I
I
L
N
PE
L N PE
Power Supply
24…28V
DC-OK
DC-
OK
+ +
- -
L N PE
Power Supply
24…28V
DC-OK
DC-
OK
+ +
- -
Redundancy
Module
+ +
-
OUT
IN
2
+ + - -
IN
1
Failure
Monitor
24V, 20 A
Load
I I
L
N
PE
Redundancy
Module
+ +
-
OUT
IN
2
+ +
- -
IN
1
L N PE
Power Supply
24...28V
DC-OK
DC-
OK
+ +
- -
L N PE
Power Supply
24...28V
DC-OK
DC-
OK
+ +
- -
optional for reduced power losses
Redundancy
Module
+ +
-
OUT
IN
2
+ +
- -
IN
1