09.95
Siemens AG 2001 All Rights Reserved 6FC5197–jAA50 9–27
SINUMERIK 840C (IA)
Conditions Operating mode :Speed setpoint
(position controller cycle)
Signal type : Sawtooth
E1 : Switch-on instant (NC Start hardkey)
E2 : Switch-off instant (e.g. NC Reset)
T1 : Period
A : Amplitude (+/–)
O : Speed offset
Explanation The speed setpoint is output with a delay via a filter during braking.
The speed setpoint amplitude acts in relation to the speed offset.
DStaircase (speed setpoint)
E1 T1
t
–A2
+A2
Speed
setpoint
O
–A1
+A1
E2
Fig. 9.8
Conditions Operating mode :Speed setpoint
(position controller cycle)
Signal type : Staircase
E1 : Switch-on instant (NC
Start hardkey)
E2 : Switch-off instant (e.g. NC Reset)
T1 : Period
A1 : Amplitude 1 (+/–)
A2 : Amplitude 2 (+/–)
O : Speed offset
Explanation Starting and braking are implemented with a delay via a filter. The amplitude
changes in cyclical operation are output in step form.
Amplitudes A1 and A2 are calculated symmetrically to the offset line.
DNoise signal
Note This waveform corresponds to that of a square-wave signal, but with statistically
varying pulse width and period.
9 Drive Servo Start-Up Application (as from SW 3)
9.3.3 Signal waveforms of function generator (as from SW 3)
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