Siemens SINAMICS S120 Operating Instructions Manual page 112

Servicing
8.3 Waiting
Nominal capacity
Maximum permissible charging current
Self-discharge at 20° C
Service life in the backup mode
Service life in operation
Replacing the backup battery
1. Switch off the main circuit-breaker.
2. Open the cabinet.
3. Disconnect the 24 VDC power supply and communications line on the operator panel.
4. Open the cover of the battery compartment.
5. Remove the old battery.
6. Insert a new battery.
7. Close the cover of the battery compartment.
8. Reconnect the 24 VDC power supply and communications line.
9. Close the cabinet.
Note
To ensure that no data is lost during a battery replacement, it must be replaced within one
minute.
If the time is exceeded, the AOP settings and input screen texts are reloaded from the
CompactFlash card by a restart of the AOP with a connection to the drive.
Set the clock to the new time.
Figure 8-2
Note
Dispose of the battery in accordance with the applicable country-specific laws and regulations.
112
Replacing the backup battery
220 mAh
10 mA, limited to < 2 mA in the operator panel
1%/year
> 1 year at 70° C; >1.5 years at 20° C
> 2 years
Applications for Cabinet Modules, liquid cooled
Operating Instructions, 04/2015, A5E35974555A