Siemens SINUMERIK 840Di Diagnostic Manual page 387

11/2006
21617 Channel %1 block %2 transformation does not allow to traverse the pole
Parameters: %1 = Channel number
%2 = Block number, label
Definitions: The preset curve passes through the pole or a forbidden area of the transformation.
Reaction: Local alarm reaction.
NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Remedy: Modify part program (if alarm has occurred in AUTO mode).
To escape from the alarm position, transformation must be deselected (it is not enough to try a RESET
if the transformer remains active when RESET is applied).
Program Clear alarm with the RESET key. Restart part program
Continuation:
21618 Channel %1 as from block %2 transformation active: overlaid motion too
great
Parameters: %1 = Channel number
%2 = Block number, label
Definitions: The share of overlaid motion on the transformation-related axes is so high that the path movement
planned by the preparation no longer sufficiently corresponds to the actual ratio for the interpolation.
Strategy of singularities, monitoring of working range limitation and dynamic Look Ahead are possibly
no longer correct.
Reaction: Alarm display.
Remedy: With overlaid motion it is necessary to keep a sufficiently large path safety distance with regard to
poles and working range limitations.
Program Clear alarm with the Delete key or NC START.
Continuation:
21619 Channel %1 block %2 transformation active: motion not possible
Parameters: %1 = Channel number
%2 = Block number, label
Definitions: The machine kinematics does not allow the specified motion. Transformation-dependent error causes
can be in:
TRANSMIT: A (circular) area exists around the pole, where positioning is not possible. The area is
caused by the fact that the tool reference point cannot be traversed as far as into the pole. The area
is defined by:
- the machine data ($MC_TRANSMIT_BASE_TOOL..)
- the active tool length compensation (see $TC_DP..).
Whether the tool length compensation is included in the calculation depends on the working plane
selected (see G17,..). The machine stops at the edge of the area where positioning is not possible.
Reaction: Local alarm reaction.
NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Remedy: Modify part program. Change the incorrectly specified tool length compensation.
Note: RESET alone is not enough if transformation also remains active during RESET.
Program Clear alarm with the RESET key. Restart part program
Continuation:
© Siemens AG, 2006. All rights reserved
SINUMERIK, SIMODRIVE Diagnostics Manual (DA), 11/2006 Edition
Overview of Alarms
NCK alarms
2-387