Typically, a variable frequency drive will allow the user to operate a motor at any frequency between 0 and 60 Hz by default. At times and/or for certain application, it may be desired to prohibit the drive to operate a specific frequency or range due to mechanical resonance or audible noise present.

Follow the steps below to setup a prohibit or jump frequency (range) to avoid the motor at that particular speed:

1. Set an initial jump frequency in parameter d3-01.
   • For example, set d3-01 = 30Hz.
2. Set a jump frequency width in parameter d3-04. This allows for a +/- range.
   • For example, set d3-04 = 2Hz. The drive will not run at 30Hz +/- 2Hz bandwidth.
3. If applicable, set other jump frequencies in parameters d3-02 and d3-03.

Note:

• The drive will use the active accel/decel times to pass through the specified dead band range, but will not allow continuous operation in that range.
• When setting more than one jump frequency, be sure the parameters do not overlap.
• The frequency at which the drive will run at (either the higher or lower frequency out off the dead-band) is dependent on if the speed reference is above or below the value set in d3-01, d3-02, or d3-03.

Refer to the diagram below for the jump frequency operation.