Siemens SINUMERIK 840C Installation Instructions Manual page 650

09.95
10.94
D Ramp 2 (position setpoint with reduced acceleration value)
Fig. 9.10
Conditions Operating mode
Signal type
ESD
RD
MD
A
O
Note Set acceleration is lower (speed characteristic).
Explanation The setpoint characteristic is the same as that in the ramp 1 diagram except that
the drive acceleration has been reduced. The position setpoint transitions during
speed changes are therefore softer. The speed is influenced by the values set in
the NC-MD:
S
S
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SINUMERIK 840C (IA)
9.3.3 Signal waveforms of function generator (as from SW 3)
Position
s
A
ESD
Speed
character-
istic
v
O
: Position setpoint
: Ramp
: Settling time
: Ramp time
: Measurement time
: Amplitude
: Speed offset
Spindle : MD 4780 – MD 4850
Axis : MD 2760
9 Drive Servo Start-Up Application (as from SW 3)
RD
MD
t
t
9–29