Lenze L-force HighLine C 8400 Series Reference Manual page 183


How to adapt the slip regulator gain to the operating conditions:
1. Adapt the slip regulator gain (C00972) to the encoder increment according to table
[5-1].
2. Set controller limitation (C00971/1) to half the slip frequency (
3. Select speed setpoint (e.g. 20 % of the rated speed).
4. Enable controller.
5. Increase slip regulator gain (C00972) until the drive becomes semi-stable.
• This can be recognised by motor noises or "humming" of the motor or by a noise
on the actual speed signal.
6. Reduce slip regulator gain (C00972) until the drive runs stable again (no motor
"humming").
7. Reduce slip regulator gain (C00972) to approx. half the value.
• For lower encoder resolutions, another reduction of the slip regulator gain for
lower speeds (speed setpoint
• It is recommended to check as a final step the behaviour at setpoint speed = 0
and further reduce the slip regulator gain in case of irregular running.
8. Increase controller limitation (C00971/1) again (e.g. to twice the slip frequency).
Slip regulator time constant Ti

How to set the slip regulator time constant:
1. Set controller limitation (C00971/1) to half the slip frequency (
2. Select speed setpoint (e.g. 20 % of the rated speed).
3. Enable controller.
4. Reduce slip regulator time constant (C00973) until the drive becomes semi-stable.
• This can be recognised by engine noises or motor "oscillating" or by oscillation
on the actual speed signal.
5. Increase slip regulator time constant (C00973) until the drive runs stable again (no
motor "oscillation").
6. Increase the slip regulator time constant (C00973) to approx. twice the value.
7. Increase controller limitation (C00971/1) again (e.g. to twice the slip frequency).
Firmware ≤ 11.00 - DMS 6.0 EN - 10/2011
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8400 HighLine C | Reference manual
≈
0) may become necessary.
L
Motor control (MCTRL)
V/f control (VFCplus + encoder)
≈
2 Hz).
≈
2 Hz).
183