Siemens SINUMERIK 840D sl Series Diagnostics Manual page 115

08/2005
Remedy: Insert an intermediate block in the part program using the correction deselection. After the
plane change, the cutter radius compensation is to be selected in an approach block with
linear interpolation.
Program Con- Clear alarm with NC START or RESET key and continue the program.
tinuation:
10758
Channel %1 block %2 curvature radius with variable compensation value too small
Parameters: %1 = Channel number
%2 = Block number, label
Definitions: The current cutter radius compensation (the cutter used) is too large for the programmed
path radius.
In a block with variable tool radius compensation, a compensation must be possible either
anywhere or nowhere on the contour with the smallest and the largest compensation
value from the programmed range. There must be no point on the contour in which the
curvature radius is within the variable compensation range.
If the compensation value varies its sign within a block, both sides of the contour are
checked, otherwise only the compensation side.
Reactions: - Correction block is reorganized.
- Local alarm reaction.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm at block end.
Remedy: Use smaller cutters or allow for a part of the cutter radius at the time of contour program-
ming.
Program Con- Clear alarm with NC START or RESET key and continue the program.
tinuation:
10759
Channel %1 block %2 path is parallel to tool orientation
Parameters: %1 = Channel number
%2 = Block number, label
Definitions: In a block with spline or polynomial interpolation, the corrected path runs in at least one
point parallel to the tool orientation, i.e. the path has a tangent perpendicular to the com-
pensation plane.
Straight lines running parallel to the tool orientation are permissible, as well as circles,
with a circle plane that is perpendicular to the compensation plane (application in smooth
retraction from a slot).
Reactions: - Correction block is reorganized.
- Local alarm reaction.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm at block end.
Remedy: Do not use splines or polynomials when writing the contour section, but straight lines and
circles instead. Divide up the tool piece geometry and deselect the cutter radius compen-
sation between the various sections.
Program Con- Clear alarm with NC START or RESET key and continue the program.
tinuation:
10760
Channel %1 block %2 helical axis is not parallel to tool orientation
Parameters: %1 = Channel number
%2 = Block number, label
Definitions: With active tool radius compensation a helix is only permissible if the helix axis is parallel
to the tool, i.e. the circle plane and the compensation plane must be identical.
© Siemens AG, 2005. All rights reserved
SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
Overview of Alarms
2-115