Siemens SINUMERIK 808D ADVANCED Diagnostic Manual page 342

SINUMERIK 808D ADVANCED alarms
5.2 NCK alarms
Programm Restart part program.
continuation:
25050 Axis %1 contour monitoring
Parameters: %1 = Axis name, spindle number
Explanation: 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 MD36400
$MA_CONTOUR_TOL, then the program is canceled and the alarm message is issued.
The alarm can be reprogrammed in the MD11412 $MN_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 MD36400 $MA_CONTOUR_TOL is too small.
- Check optimization of the position controller (Kv factor in the MD32200 $MA_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).
Programm Restart part program.
continuation:
25060 Axis %1 speed setpoint limitation
Parameters: %1 = Axis name, spindle number
Explanation: The speed setpoint has exceeded its upper limit for a longer period than allowed.
The maximum speed setpoint is limited to a certain percentage by the axis-specific MD36210 $MA_CTRLOUT_LIMIT. The
input value of 100% corresponds to the rated speed of the motor and hence the rapid traverse velocity (exemplary default
value: 840D=110%).
For SINAMICS: Drive parameter p1082 also has a limiting effect.
If the values are exceeded for a short time, then this is tolerated provided they do not last longer than allowed for in the
axis-specific MD36220 $MA_CTRLOUT_LIMIT_TIME. The setpoint is limited during this time to the maximum value that
has been set in (MD36210 $MA_CTRLOUT_LIMIT).
The alarm can be reprogrammed in the MD11412 $MN_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. This alarm should not occur if the drive controller has been
set correctly and the machining conditions are those that normally prevail.
- Check actual values: Local sluggishness of the carriage, speed dip by torque surge due to contact with workpiece/tool,
travel against fixed obstacle, etc.
- Check direction of position control: Does the axis continue to rotate without control?
Programm Restart part program.
continuation:
342
Clear alarm with the RESET key in all channels of this mode group. Restart part program.
Clear alarm with the RESET key in all channels of this mode group. Restart part program.
Clear alarm with the RESET key in all channels of this mode group. Restart part program.
Diagnostics Manual, 06/2015, 6FC5398-6DP10-0BA2
Diagnostics Manual