Siemens SINUMERIK 840Di - Page 426

06.03
13.4 Frequency response measurement
13-426
 Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
Offset
A low offset of a fed motor revolutions per minute can be selected to rule out an
influence of the static friction.
S The Offset is run up using an acceleration ramp.
S The acceleration value is defined for one
axis: check MD 32300: MAX_AX_ACCEL
spindle: check MD 35200: GEAR_STEP_SPEEDCTRL_ACCEL
MD 35210: GEAR_STEP_POSCTRL_ACCEL
S The following applies: Acceleration value = 0, no ramp
Acceleration value > 0, ramp active
S The actual measuring function becomes active only when the offset value is
reached.
Settling time
This value represents the delay between measured data recording/test setpoint
output and the injection of the offset.
Speed
setpoint
Amplitude
Offset
Settling time Measuring period
Time
Time
0
0
Position
characteristic
Fig. 13-3 Setpoint signal with measuring function speed control loop – step
response
The measurement parameters and the measurement results (diagrams) can be
loaded and/or saved using the soft key File functions.
Additional
information
13 Drive O
p
timization usin
g
HMI Advanced