Siemens SINUMERIK 840D sl Series Diagnostics Manual page 376

Overview of Alarms
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).
Reactions: - 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 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).
Program Con- Clear alarm with the RESET key in all channels of this mode group. Restart part program.
tinuation:
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 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).
Reactions: - 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. If the drive controller has
been set correctly and if the machining conditions are those that normally prevail, then
this alarm should not occur.
• Check actual values: Local tight running of the carriage, speed dip by torque reduction
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 611D drives)?
• Check the speed setpoint cable.
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SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
© Siemens AG, 2005. All rights reserved
08/2005