Lenze 8400 StateLine C - Page 186

8400 StateLine C | Reference manual
Motor control (MCTRL)
Sensorless control for synchronous motors (SLPSM)
186 L Firmware ≤ 11.00 - DMS 8.0 EN - 10/2011
 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 C00070/3
and reset time Tn in C00071/3.
4. Repeat steps 1 ... 3 until the optimum ramp response is reached.
n
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n
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Vp < Vp opt. Vp = Vp opt. Vp > Vp opt.
Tn < Tn opt.
Tn = Tn opt.
Tn > Tn opt.
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