Siemens SINUMERIK 840D sl Series Diagnostics Manual page 403

08/2005
Program Con- Alarm display showing cause of alarm disappears. No further operator action necessary.
tinuation:
27008
Axis %1 SW limit switch deactivated
Parameters: %1 = Axis number
Definitions: Via the HMI, the SI acceptance test Safe limit position has been started, for example with
the acceptance test wizard. For these acceptance tests, the single-channel software limit
switches are deactivated for the axis/spindle, in order to assure that the safe limit posi-
tions can be approached.
Reactions: - Alarm display.
Deactivation of the single-channel software limit switch for the displayed axis/spindle.
Remedy: Deselect the acceptance test, for example with the acceptance test wizard, or wait until
completed.
Program Con- Alarm display showing cause of alarm disappears. No further operator action necessary.
tinuation:
27010
Axis %1 tolerance for safe standstill exceeded
Parameters: %1 = Axis number
Definitions: The axis has moved too far away from the setpoint position. It is further away than
allowed in MD SAFE_STANDSTILL_TOL.
The alarm can be reprogrammed in the MD
$MN_ALARM_REACTION_CHAN_NOREADY (channel not ready).
Reactions: - Mode group not ready.
- Channel not ready.
- NC Start disable in this channel.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm.
- Channel not ready.
Stop of the axis with the setpoint speed value=0 (STOP B). As soon as the actual speed
value is smaller than defined in MD $MA_SAFE_STANDSTILL_VELO_TOL, but the latest
after time-out in MD $MA_SAFE_PULSE_DISABLE_DELAY, the pulses will be sup-
pressed (STOP A).
Remedy: Check the tolerance of zero speed monitoring: does the value match the precision and
control dynamics of the axis? If not, increase tolerance. If yes, check the machine for any
damage and rectify it.
Program Con- Switch control OFF - ON.
tinuation:
27011
Axis %1 safe velocity exceeded
Parameters: %1 = Axis number
Definitions: The axis has moved too quickly and faster than allowed in MD $MA_SAFE_VELO_LIMIT.
With active SBH/SG and a 1-encoder system, the velocity which corresponds to an
encoder limit frequency of 200 kHz has been exceeded.
Reactions: - NC Start disable in this channel.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm.
Axis stop with STOP A, C, D or E, depending on the configuration in MD
$MA_SAFE_VELO_STOP_MODE or MD $MA_SAFE_VELO_STOP_REACTION.
© Siemens AG, 2005. All rights reserved
SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
Overview of Alarms
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