Siemens SINUMERIK 840Di Diagnostic Manual page 411

11/2006
25001 Axis %1 hardware fault of passive encoder
Parameters: %1 = Axis name, spindle number
Definitions: The signals from the position actual value encoder that is presently not active are missing, or they are
not of the same phase, or they exhibit grounding/short-circuit.
Reaction: Alarm display.
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. Switch off the
monitoring with the corresponding interface signal (DB 31 - 48, DBX 1.5 = 0 or DBX 1.6 = 0). o
Program Clear alarm with the RESET key. Restart part program
Continuation:
25010 Axis %1 pollution of measuring system
Parameters: %1 = Axis name, spindle number
Definitions: The encoder used for position control sends a contamination signal (only in measuring systems with
contamination signal).
The alarm can be reprogrammed in the MD ALARM_REACTION_CHAN_NOREADY (channel not
ready).
Reaction: Mode group not ready.
The NC switches to follow-up mode.
Channel not ready.
NC Start disable in this channel.
Axes of this channel must be re-referenced.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Channel not ready.
Remedy: Please inform the authorized personnel/service department. Check the measuring system in
accordance with the instructions given by the measuring device manufacturer.
Program Clear alarm with the RESET key in all channels of this mode group. Restart part program.
Continuation:
25011 Axis %1 pollution of passive encoder
Parameters: %1 = Axis name, spindle number
Definitions: The encoder not used for position control sends a contamination signal (only in measuring systems
with contamination signal).
Reaction: Alarm display.
Remedy: Please inform the authorized personnel/service department. Check the measuring system in
accordance with the instructions given by the measuring device manufacturer.
Program Clear alarm with the Delete key or NC START.
Continuation:
© Siemens AG, 2006. All rights reserved
SINUMERIK, SIMODRIVE Diagnostics Manual (DA), 11/2006 Edition
Overview of Alarms
NCK alarms
2-411