Replacing a power supply
unit
If it should be necessary to replace the power supply unit in a system
during commissioning or during operation, we recommend you
proceed as follows:
Requirement:
Redundant backup, "Spare power supply" without
rechargeable battery (standard spare part).
The lithium battery in the rack in in full working order.
Step
Action
1
Disconnect the faulty power supply from the system
voltage and remove it.
2
Set the jumpers on the spare power supply according to
your needs.
3
Push the spare power supply into the rack and screw it in
place.
4
Remove the right-hand fan subassembly from the
defective power supply.
5
Remove the rechargeable battery from the fan sub-
assembly.
6
Replace the right-hand fan subassembly in the defective
power supply.
7
Remove the right-hand fan subassembly from the spare
power supply.
8
Connect up the spare power supply.
9
Switch on the system voltage and the power supply in any
order.
Reaction:
- The system runs up
- Both fans run at an increased speed
- The LEDs "Fan 3" and "RB low" light up.
10
Insert the rechargeable battery in the fan subassembly and
connect it up.
11
Reinsert the right-hand fan subassembly.
12
After the system has run up, press the reset switch on the
spare power supply.
Reaction:
- The LED "Fan 3" goes out
- The fans run at their normal speed again
- The LED "RB low" shows the charge state of the
rechargeable battery.
Power Supply Units
System Manual
4 - 50
C79000-B8576-C199-03