Sinumerik Alarm 2101 NCK battery alarm
The under voltage monitoring (2.4-2.6V) of the NCK battery has responded during cyclic operation.
– Alarm display.
If the NCK battery is replaced without interrupting the power supply, no data will be lost.This means that production can continue without taking any further steps.(A buffer capacitor on the NCK holds the supply voltage for at least 30 minutes and the battery can be replaced within this time even when the control is switched off).
Clear alarm with the Delete key or NC START.
- Siemens Diagnostics Guide by Siemens