Axis %1 Contour Monitoring; Axis %1 Speed Setpoint Limitation - Siemens Sinamics S120 Diagnostic Manual

NCK alarms
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 MD36400 $MA_CONTOUR_TOL, then the program is aborted 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).
Program Teileprogramm neu starten.Clear alarm with the RESET key in all channels of this mode group. Restart part program.
Continuation:
25060

Axis %1 speed setpoint limitation

Parameters: %1 = Axis name, spindle number
Definitions: 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 (not on SIMODRIVE 611D
drives)?
Program Teileprogramm neu starten.Clear alarm with the RESET key in all channels of this mode group. Restart part program.
Continuation:
350
Diagnostics Manual, 07/2010, 6FC5398-8BP40-0BA0
Alarms