Siemens SINUMERIK 840D Series Diagnostics Manual page 324

1 Alarms
25050
Parameters:
Definitions:
Reactions:
Remedy:
Program Continuation:
25060
Parameters:
Definitions:
Reactions:
Remedy:
1-324
Axis %1 contour monitoring
%1 = Axis name, spindle number
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).
- 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.
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 over-
shooting. 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).
Clear alarm with the RESET key in all channels of this mode group. Restart part program.
Axis %1 speed setpoint limitation
%1 = Axis name, spindle number
The speed setpoint has exceeded its upper limit for a longer period than allowed.
The maximum speed setpoint is limited to a certain percentage with the axis-specific
machine data 36210 CTRLOUT_LIMIT. The input value of 100% corresponds to the rated
speed of the motor and hence the rapid traverse velocity (default values: 840D=110%,
FM-NC=100%).
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 MD 36220 CTRLOUT_LIMIT_TIME. The set-
point is limited during this time to the maximum value that has been set (MD 36210).
The alarm can be reprogrammed in the MD ALARM_REACTION_CHAN_NOREADY
(channel not ready).
- 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.
Please inform the authorized personnel/service department. If the drive controller has
been set correctly and if the machining conditions are those that normally prevail, then
this alarm should not occur.
SINUMERIK 840D/840Di/810D Diagnostics Guide (DA) – 11.02 Edition
 Siemens AG, 2002. All rights reserved
11.02