Axis-Specific Md 2 (Axial Data 2) - Siemens SINUMERIK 840C Installation Instructions Manual

6 NC Machine Data (NC MD), NC Setting Data (NC SD)

6.7 Axis-specific MD 2 (axial data 2)

6.7 Axis-specific MD 2 (axial data 2)
1100*
Default value
20 000
Defines the distance at which the braking operation is to be prematurely begun if the current
speed exceeds the speed in NC MD 1, thus ensuring that the position of the software limit
switch will be overrun only to a negligible degree during circular interpolation.
Overshooting of the pre-limit switch triggers alarm 3091 except in the case of rapid traverse.
Recommendation
The value entered should be slightly higher than the value which would correspond to the
braking distance from rapid traverse to NC MD 1.
In program mode, travel movements which would result in overshooting of the software limit
switch position are simply not started (alarm 2065 is triggered).
Exception!
Circular interpolation, helical interpolation
Start of deceleration to zero speed
A
Reduction to NC MD 1
Machine data for the "Setup mode division-related" function.
1104*
Default value
0
Input limits: The value 0 is allowed only if the axis involved is not an indexing axis
(NC MD 564* bit 4 = 0).
The number of divisions gives the divisions per division reference dimension (NC MD 1108*).
6–158
SW prelimit switch
Lower input limit Upper input limit
- 99 999 999 99 999 999
Number of divisions
Lower input limit Upper input limit
0
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Siemens AG 1992 All Rights Reserved
Units
units (MS)
Software limit
switch
Software pre-
limit switch
E
Units
999 –
6FC5197- AA50
SINUMERIK 840C (IA)
09.95
Active
at once
Active
at once