Detailed description
2.2 Protection zones
Basic logic functions: Axis monitoring, protection zones (A3)
56
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Monitoring of overlaid motion
Axes that have been assigned to another channel are not taken into account. The last
position to be approached is taken to be the end position. It is not taken into account whether
the axis has traversed after changing channels.
Behavior in the AUTOMATIC and MDI operating modes
Protection zones are not overrun in Automatic modes:
•
If the movement in a block is from outside into the protection zone (
N30
), deceleration is
executed toward the end of the previous block (
N20
) and the movement is stopped.
–
If the protection zone is preactivated but not activated by the PLC, machining is
continued (case 1).
–
If the protection zone is activated or preactivated and activated by the PLC, machining
is stopped (case 2).
•
If the starting point of the block is inside the protection zone, the movement is not started.
In case of violation of protection zone for the workpiece-related protection zone, the alarm:
10700 "NCK-protection zone in v or MDI violated" or 10701 "channel-specific protection zone
in AUTOMATIC or MDI violated" is given.
1
1
1
1
1
1
1
1
1
1
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Figure 2-14 Behavior of the path velocity when entering a protection zone
Overlaying several axis motions
Overlaid motions of external ZO (zero offsets) or DRF are taken into account if they are
executed at a sufficiently early point in time.
If an overlaid motion occurs while a protection zone is active or operative, an alarm is output
as a warning. This alarm has no effect on the machining operation and resets itself if the
transferred motion has been fully taken into account. The PLC interface signal is set at the
same time as alarm 10704:
DB31, ... DBX39.0 (protection-zone monitoring not guaranteed).
Enabling of workpiece-related protection zones
When a workpiece-related protection zone has been violated, the operator can enable it
temporarily with NC start in the AUTOMATIC and JOG modes so that it can be traversed.
This clears the alarm and travels into the protection zone in the AUTOMATIC and MDI
operating modes.
Summary of Contents for SINUMERIK 840D sl
Page 282: ...Index Basic logic functions Acceleration B2 64 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 388: ...Basic logic functions Travel to fixed stop F1 Function Manual 11 2006 6FC5397 0BP10 2BA0 52 ...
Page 962: ...Index Basic logic functions Emergency Stop N2 20 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1704: ...Constraints Basic logic functions Spindles S1 94 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1716: ...Index Basic logic functions Spindles S1 106 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1996: ...Index Basic logic functions Tool Offset W1 208 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 2150: ...Table of contents Basic logic functions Appendix 4 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 2184: ...Glossary Basic logic functions Appendix 38 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...