Sinumerik Alarm 25000 Axis %1 hardware fault of active encoder
Parameters:
%1 = Axis name, spindle number
Definitions:
The signals of the currently active position actual value encoder (interface signal DB 31 – 48, DBX 1.5 = 1 or DBX 1.6 = 1) are missing, do not have the same phase, or exhibit grounding/short-circuit. The alarm can be reprogrammed in the MD ALARM_REACTION_CHAN_NOREADY (channel not ready).
Reactions:
– Mode group not ready.
– Channel not ready.
– If the axis is a single axis when this alarm is triggered, the alarm is only effective for this axis (not effective for e.g. the channel or mode group)
– Channel not ready.
– NC Start disable in this channel.
– NC Stop on alarm.
– The NC switches to follow-up mode.
– Alarm display.
– Interface signals are set.
– Axes of this channel must be re-referenced.
Remedy:
Please inform the authorized personnel/service department. Check measuring circuit connectors for correct contacting. Check encoder signals and replace the encoder if faults are found.
Program Continuation:
Switch control OFF – ON.
References
- Siemens Diagnostics Guide by Siemens