Siemens S5-135U/155U System Manual page 114

Central Controllers and Expansion Units Power Supply Units
Requirement:
Redundant backup, "Spare power supply" with rechargeable battery. The
lithium battery in the rack in in full working order.
Requirement:
No backup
4-48
Step
Disconnect the faulty power supply from the system voltage and remove it.
1
2 Set the jumpers on the spare power supply according to your needs.
Push the spare power supply into the rack and screw it in place.
3
4 Remove the right-hand fan subassembly from the spare power supply.
Connect up the replacement power supply.
5
Switch on the system voltage and the power supply in any order.
6
Reaction:
– The system runs up
– Both fans run at an increased speed
– The LEDs "Fan 3" and "RB low" light up.
7 Reinsert the right-hand fan subassembly.
8 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 battery charge state.
Step
Disconnect the faulty power supply from the system voltage and remove it.
1
2 Set the jumpers on the spare power supply according to your needs.
Push the spare power supply into the rack and screw it in place.
3
Connect up the spare power supply.
4
Switch on the system voltage and the power supply in any order.
5
Reaction:
– The system runs up.
Action
Action
System Manual
C79000-G8576-C199-06