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5
Motor control (MCTRL)
5.9
Servo control (SC)
244
Lenze · 8400 HighLine · Reference manual · DMS 12.0 EN · 06/2017 · TD23
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How to optimise the speed controller setting by means of the ramp response:
1. Run a typical speed profile and record the ramp response of the speed using the data
logger.
• Motor control variables to be recorded:
nSpeedSetValue_a
(speed setpoint)
nMotorSpeedAct_a
(actual speed value)
2. Evaluate the ramp response:
• Solid line = ramp response (actual speed value)
• Dash line = speed setpoint
3. Change gain Vp in
.
4. Repeat steps 1 ... 3 until the optimum ramp response is reached.
Note!
For an optimal setting, we recommend to determine the mass inertia (optimal response
to setpoint changes) first.
Optimise response to setpoint changes and determine mass inertia
n
t
n
t
n
t
n
t
n
t
n
t
n
t
n
t
n
t
Vp < Vp opt.
Vp = Vp opt.
Vp > Vp opt.
Tn
<
T
n
opt.
Tn
=
T
n
opt.
Tn
>
T
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opt.