Siemens компьютерный диск 611-D Руководство

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Siemens компьютерный диск 611-D
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09.95 12 Functional Descriptions
12.4.2 Extension of dwell (SW 5 and higher)
12.4.2 Extension of dwell (SW 5 and higher)
12.4.2.1 Corresponding data
• NC MD 330 (Deadtime compensation for dwell with reference to the axis actual value)
• NC MD 332 (Deadtime compensation for dwell with reference to the axis setpoint)
• NC MD 333 (Deadtime compensation for dwell with reference to the spindle actual value)
• NC MD 334 (Deadtime compensation for dwell with reference to the spindle setpoint)
Following functions are implemented:
• Dwell at setpoint (G14)
• Dwell at any spindles (S1 to S6, at G14 and G24).
• Position-related dwell (G90) with overtravel direction (with G14 and G24 with
axes/spindles).
The different "dwell types" cause different deadtimes. For this reason, there are new machine
data for deadtime compensation (see above):
For description see Section 12.4.1 above.
Note:
During dwell in absolute positions (G90) the speed of the axis/spindle must not be larger than
D
max
so that overtravel beyond the dwell position is reliably detected. If the speed is
greater/lower than D
max
the dwell is terminated on the next IPO cycle.
D
max
[rpm] < 30000 / (Tab[ms] * (1+K
dead
[%] / 100)))
Where:
Tab = IPO scan time in ms
K
dead
= Deadtime compensation value in %
Example of standard machine data:
Tab = 16 ms, K
dead
= 450%:
D
max
< 30000 / (16 + (1+4,5)) rpm = 340 rpm
Note:
• The standard value for NC MD 330 has changed from 550 to 450 since SW 4.
• No zero offsets or tool offsets are included for the axes.
© Siemens AG 1992 All Rights Reserved 6FC5197- AA50 12–15
SINUMERIK 840C (IA)
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