133
Cutoff Frequency AFN 59
AFN: Cuto Freq
59 0.0 Hz
LCD Display
Range 0.0 – 5.0 Hz (Default 0.0 Hz)
Description This parameter sets the point where the drive no longer attempts to spin the motor. The drive will operate
with no Cut-off Frequency when the parameter is congured to a value of 0.0 Hz.. If the function is
enabled, the drive will be able to ramp up through the cut-off frequency range, as in normal operation. If
the output frequency falls below the cut-off frequency, the drive stops “gating” the outputs and coasts down
to zero speed. The keypad display will indicate Zero Speed, and the Forward or Reverse LED will be lit
depending on the command. When the frequency returns to a value greater than the cut-off frequency, the
drive will ramp from 0.0 Hz to the reference frequency.
Stab.GainAFN60
Stab.RateAFN61
AFN: Stab. Rate
61 0
AFN: Stab. Gain
60 0
7 - PARAMETER DESCRIPTION
LCD Display
LCD Display
Range 0 - 10 (Default is model dependent)
Description Adjust this parameters if you observe mechanical instability in the motor.
If this occurs, adjust the “Stab. Gain” parameter higher to attempt to remove this instability
Range 1 - 1000 (Default is model dependent)
Description This parameter is similar to AFN 60
Adjust this parameter if you observe mechanical instability in the motor. This parameter is a further
adjustment to deal with differences in inertial loads. It congures the reaction time of the algorithm and
can be adjusted for further stability control. The number should be programmed smaller for higher inertia
loads.
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