Recommendations for redundancy, Inductive and capacitive loads, Example: 1+1 redundancy up to 10a – Rockwell Automation 1606-XLERED Power Supply Reference Manual User Manual
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All parameters are specified at 24V, 2.5A, 230Vac input, 25ªC ambient and after a 5 minutes run-in time unless noted otherwise.
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Rockwell Automation Publication 1606-RM033A-EN-P — March 2014
Bulletin 1606 Switched Mode Power Supplies
19. Application Notes
19.1. Recommendations for Redundancy
Recommendations for the configuration of redundant power systems:
•
Use separate input fuses for each power supply.
•
Use three-phase power supplies to gain functional safety if one phase fails.
•
When single-phase power supplies are utilized connect them to different phases or mains circuits if possible.
•
Set the power supply in “Parallel-Use” mode if this feature is available.
•
It is desirable to set the output voltages of all power supplies to the same value.
19.2. Inductive and Capacitive Loads
The unit is designed to supply any kind of load, including unlimited inductive and capacitive loads.
19.3. Example: 1+1 Redundancy up to 10A
1+1 Redundancy up to 10A requires two 10A power supplies and one 1606-XLERED redundancy module.
Fig. 20-1
Wiring diagram, 1+1 Redundancy, 10A output current
Failure
Monitor
10A
Load
optional
I
I
L
N
PE
1606-XLERED
+
-
OUT
+
-
IN 1
+
-
IN 2 IN 1 IN 2
L N PE
10A
Power Supply
+ +
- -
24V, 10A
L N PE
10A
Power Supply
+ +
- -
24V, 10A
Note: Whenever possible, use separate mains systems for each power supply.