Siemens Sinumerik 840D sl Diagnostic Manual page 340

Overview of Alarms
NCK alarms
Program Con- Clear alarm with the RESET key. Restart part program
tinuation:
20210 [Channel %1: ] Block %3 spindle %2 wrong values for centerless
grinding
Parameters: %1 = Channel number
%2 = Spindle number
%3 = Block number, label
Definitions: It was not possible to calculate a tool diameter (no speed specified for the spindle) for centerless grind-
ing because it was not allowed by the input positions. The old S value still applies.
Reaction: Alarm display.
Remedy: - Modify program
- Select new traversing positions for centerless axes
- or suppress computation by G00.
Program Con- Alarm display showing cause of alarm disappears. No further operator action necessary.
tinuation:
20211 [Channel %1: ] Block %3 spindle %2 support point beyond range limits
Parameters: %1 = Channel number
%2 = Spindle number
%3 = Block number, label
Definitions: The support point calculated for centerless grinding is beyond the range limits.
Machine data:
Modify MD21518 $MC_TRACLG_CONTACT_UPPER_LIMIT
Modify MD21520 $MC_TRACLG_CONTACT_LOWER_LIMIT
Reaction: Alarm display.
Remedy: - Check centerless axis positions and machine data.
- Modify program.
- Select new traversing positions for centerless axes
- or suppress computation by G00.
Program Con- Alarm display showing cause of alarm disappears. No further operator action necessary.
tinuation:
20300 [Channel %1: ] Axis %2 orientation not possible
Parameters: %1 = Channel number
%2 = Axis name, spindle number
Definitions: On traversing the displayed (virtual) orientation axis, a tool orientation is to be set
for which the kinematics of this machine are not possible.
Reaction: Alarm display.
Remedy: Cancel the JOG movement and specify another (possible)
change of orientation.
Program Con- Clear alarm with the Delete key or NC START.
tinuation:
21550 [Channel %1: ] Axis %2 Travel from hardware limit switch not possible.
Reason: %3
Parameters: %1 = Channel number
%2 = Axis name
%3 = Cause
Definitions: It has been tried to retract a following axis of an axis coupling or an output axis of a transformation
through the master axis or input axis of a transformation. This is not permitted in the current situation.
Possible reasons:
1 No permissible direction of retraction
2 Coupling not synchronous
3 Retraction not permitted for the active coupling
4 Reserved
5 Retraction not permitted for the active transformation
Reaction: NC Start disable in this channel.
Alarm display.
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SINUMERIK 840D sl, 840Di sl, SINAMICS, Diagnostics Manual (DAsl), 03/2009
© Siemens AG, 2009. All Rights Reserved
03/2009