Rockwell Automation Publication 1606-RM110A-EN-P - July 2020
17
Redundancy Power Supply - 24V, 10 A, 240 W, Single-phase Input
Replacing Units While the
System is Running
This feature is available only for the 1606-XLE240ERZ, -XLE240CRZ, and
-XLE240EDRZ units, which are equipped with hot-swappable plug connectors.
Figure 20 - Replacing the power supply or redundancy module while the system is running
Replacement Instructions (Example for left power supply):
1. Switch-off circuit breaker (1a).
2. Remove plug (2a).
3. Remove plug (3a). The plug helps prevent the cables from shorting.
4. Change power supply.
5. Put the plug (3a) back in.
6. Put the plug (2a) back in.
7. Turn-on the circuit breaker (1a).
8. The circuit is redundant again.
To replace the right power supply, repeat the process using (1b), (2b) and (3b).
Load
I
I
L
N
PE
1a
L N PE
+
-
Power Supply
DC-OK
DC-
OK
Output 24V 10A
Input
L N PE
+
-
Power Supply
DC-OK
DC-
OK
Output 24V 10A
Input
1b
2a
3a
3b
2b