Siemens SINUMERIK 840Di Diagnostic Manual page 415

11/2006
25042 Axis %1 standstill monitoring during torque/force limitation
Parameters: %1 = Axis name, spindle number
Definitions: The defined end position was not reached within the time specified in the machine data.
Reaction: Mode group not ready.
The NC switches to follow-up mode.
Channel not ready.
NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Channel not ready.
Remedy: - If the drive torque (FXST) was set too low with the result that the force of the motor was not sufficient
to reach the end position -> increase FXST.
- If the machined part is slowly deformed, there may be a delay in reaching the end position -> increase
MD 36042 FOC_STANDSTILL_DELAY_TIME.
Program Clear alarm with the RESET key in all channels of this mode group. Restart part program.
Continuation:
25050 Axis %1 contour monitoring
Parameters: %1 = Axis name, spindle number
Definitions: The NCK calculates for each interpolation point (setpoint) of an axis the actual value that should result
based on an internal model. If this calculated actual value and the true machine actual value differ by
a larger amount than given in the machine data 36400 CONTOUR_TOL, then the program is aborted
and the alarm message is issued.
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.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Channel not ready.
Remedy: Please inform the authorized personnel/service department.
- Check whether the tolerance value set in MD 36400: CONTOUR_TOL is too small.
- Check optimization of the position controller (Kv factor in the machine data 32200 POSCTRL_GAIN)
to establish whether the axis follows the given setpoint without overshooting. Otherwise, the speed
controller optimization must be improved or the Kv servo gain factor must be reduced.
- Improvement of speed controller optimization
- Check the mechanics (smooth running, inertial masses).
Program Clear alarm with the RESET key in all channels of this mode group. Restart part program.
Continuation:
© Siemens AG, 2006. All rights reserved
SINUMERIK, SIMODRIVE Diagnostics Manual (DA), 11/2006 Edition
Overview of Alarms
NCK alarms
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