Firmware ≤ 05.00 - DMS 4.2 EN - 02/2010 L 131
8400 HighLine | Parameter setting & configuration
Motor control (MCTRL)
V/f control (VFCplus + encoder)
How to adapt the slip regulator gain to the operating conditions:
1. Adapting the slip regulator gain (C00972
) to the encoder increment according to
table [5-1]
.
2. Set the controller limitation (C00971/1
) to half the slip frequency (≈ 2Hz).
3. Specify a speed setpoint (e.g. 20 % of the rated speed).
4. Enable the controller.
5. Increase the slip regulator gain (C00972
) until the drive is semi-stable.
• This can be recognised by motor noise, i.e. "humming" of the motor or noise on
the actual speed value signal.
6. Reduce the slip regulator gain (C00972
) until the drive is stable again (no
"humming" of the motor).
7. Reduce the 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
≈ 0) may become necessary.
• We recommend to finally check the behaviour at setpoint speed = 0 and to
further reduce the slip regulator gain if irregular running occurs.
8. Increase the 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 the controller limitation (C00971/1
) to half the slip frequency (≈ 2Hz).
2. Specify a speed setpoint (e.g. 20 % of the rated speed).
3. Enable the controller.
4. Reduce the slip regulator time constant (C00973
) until the drive is semi-stable.
• This can be recognised by motor noise, "motor vibrations" or resonance on the
actual speed value signal.
5. Increase the slip regulator time constant (C00973
) until the drive is stable again (no
"motor vibrations").
6. Increase the slip regulator time constant (C00973
) to approx. twice the value.
7. Increase the controller limitation (C00971/1
) again (e.g. to twice the slip
frequency).
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