Siemens SINAMICS S120 Manual page 304

Maintenance and servicing
7.5 Replacing components
Replacing
1. Disconnect the 24 VDC power-supply cable.
2. Disconnect the communication cable on the operator panel.
3. Open the cover of the battery compartment.
4. Remove the old battery.
5. Insert the new battery.
6. Complete the procedure by carrying out the above actions in reverse order.
Table 7- 3
Type
Vendor
Rated capacity
Maximum permissible charging current
Self-discharge at 20° C
Service life (in backup mode)
Note
Time for replacing the battery
The battery must be replaced within one minute to ensure that no AOP settings are lost.
Note
Battery disposal
The battery must be disposed of in accordance with the applicable country-specific
guidelines and regulations.
302
Technical data for the backup battery
CR2032 3 V lithium battery
Maxell, Sony, Panasonic
220 mAh
10 mA (restricted to < 2 mA in operator panel)
1%/year
> 1 year at 70° C > 1.5 years at 20° C
Cabinet Modules liquid cooled
Equipment Manual, 04/2020, A5E37067587A