Siemens SINUMERIK 840C Installation Instructions Manual page 210

09.95
Deadtime compensation for dwell referred to axis
330
Default value
550
331
Sine of angular range for tangential transitions TRC
Default value
2
( ˆ =appr. 0.0005 degr.) ( ˆ =appr. 0.0003 degr.)
This MD defines which angular range the tool radius compensation recognizes as the
tangential transition (180° ± MD 331). No intermediate blocks are inserted with tangential
transitions.
Deadtime compensation for dwell referred
332
Default value
450
Deadtime compensation for dwell referred to
333
Default value
550
Deadtime compensation for dwell referred
334
Default value
450
With the "Dwell referred to an axis" (G24), a time corresponding to the machine data above is
compensated statically. This data is used to observe the internal execution times in the control.
If the value is 0, there is no deadtime compensation.
With dwell on absolute position (G90) the speed of the axis/spindle must not become
greater than Dmax, so that overtravel of the dwell position is recognized reliably.
If the speed is greater than or equal to D
D
max
Tab: IPO sampling time in ms
K : Deadtime compensation value in %
dead
Example of standard machine data:
Tab = 16 ms, K = 450%:
dead
D < 30000/(16 *(1+4.5)) rpm = 340 rpm
max
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Siemens AG 1992 All Rights Reserved
SINUMERIK 840C (IA)
6 NC Machine Data (NC MD), NC Setting Data (NC SD)
Actual value (SW 4 and higher)
Lower input limit
0
Lower input limit
1
( ˆ =approx. 4.5 degr.)
to axis setpoint (SW 5 and higher)
Lower input limit
0
spindle actual value (SW 5 and higher)
Lower input limit
0
to spindle setpoint (SW 5 and higher)
Lower input limit
0
, dwell is terminated in the next IPO cycle.
max
[rpm]<30000/(Tab[ms]*(1+K
6FC5197- AA50
6.2 General machine data (general data)
Upper input limit
in % of the IPO
16 000
Upper input limit
16 000
0.5x10
Upper input limit
in % of the IPO
16 000
Upper input limit
in % of the IPO
16 000
Upper input limit
in % of the IPO
16 000
[%]/100)))
dead
Active on
NC Stop
Units
cycle
Active on
NC Stop
Units
-5
Active on
NC Stop
Units
cycle
Active on
NC Stop
Units
cycle
Active on
NC Stop
Units
cycle
6–25