Siemens SINUMERIK 840Di Diagnostic Manual page 108

Overview of Alarms
NCK alarms
10620 Channel %1 block %3 axis %2 at software limit switch %4
Parameters: %1 = Channel number
%2 = Axis name, spindle number
%3 = Block number, label
%4 = String
Definitions: During the traversing motion, the system detected that the software limit switch would be crossed in
the direction indicated. During block preparation, it was not yet possible to detect that the traversing
range would be exceeded: Either there has been a motion overlay by the handwheel or a coordinate
transformation is active.
Reaction: Local alarm reaction.
NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm at block end.
Remedy: Depending on the reason for this alarm being triggered, the following remedial measures should be
undertaken:
- Handwheel override: Cancel the motion overlay and avoid this or keep it smaller when the program
is repeated.
- Transformation: Check the preset/programmed zero offsets (current frame). If the values are correct,
the tool holder (fixture) must be moved in order to avoid triggering the same alarm when the program
is repeated, which would again cause the program to be aborted.
Program Clear alarm with the RESET key. Restart part program
Continuation:
10621 Channel %1 axis %2 rests on software limit switch %3
Parameters: %1 = Channel number
%2 = Axis name, spindle number
%3 = String
Definitions: The specified axis is already stationary at the displayed software limit.
Reaction: Alarm display.
Remedy: Please inform the authorized personnel/service department. Machine data 36110
POS_LIMIT_PLUS/36130 POS_LIMIT_PLUS2 and 36100 POS_LIMIT_MINUS/36120
POS_LIMIT_MINUS2 must be checked for the software limit switches.
Shut down in JOG mode from the software limit switch.
Please inform the authorized personnel/service department.
Machine data:
Check the axis-specific interface signals: "2. "2nd software limit switch plus" (DB 31 - 61, DBX 12.3)
or "2nd software limit switch minus" (DB 31 - 61, DBX 12.2) check whether the 2nd software limit
switch is selected.
Program Alarm display showing cause of alarm disappears. No further operator action necessary.
Continuation:
10630 Channel %1 block %2 axis %3 at working area limit %4
Parameters: %1 = Channel number
%2 = Block number, label
%3 = Axis, spindle number
%4 = String ( + or - )
Definitions: The specified axis violates the working area limitation. This is recognized only in the main run either
because the minimum axis values could not be measured before the transformation or because there
is a motion overlay.
Reaction: Local alarm reaction.
NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm at block end.
Remedy: Program other motion or do not perform overlaid motion.
Program Clear alarm with the RESET key. Restart part program
Continuation:
2-108
© Siemens AG, 2006. All rights reserved
SINUMERIK, SIMODRIVE Diagnostics Manual (DA), 11/2006 Edition
11/2006