Siemens SINUMERIK 840C User Manual
Page 650
09.95
Siemens AG 2001
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j
AA50
9–29
SINUMERIK 840C (IA)
D
Ramp 2 (position setpoint with reduced acceleration value)
MD
RD
t
A
s
ESD
t
O
v
Speed
character-
istic
Position
Fig. 9.10
Conditions
Operating mode
: Position setpoint
Signal type
: Ramp
ESD
: Settling time
RD
: Ramp time
MD
: Measurement time
A
: Amplitude
O
: Speed offset
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
Spindle :
MD 4780 – MD 4850
S
Axis
:
MD 2760
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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