Delta Electronics VFD-M Series, User Manual

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Chapter 4 Parameters
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Revision May 2008, ME14, SW V3.04 4-51
Pr.67
Skip Frequency 1
Unit: 0.1 Hz
Pr.68
Skip Frequency 2
Unit: 0.1 Hz
Pr.69
Skip Frequency 3
Unit: 0.1 Hz
Settings 0.00 to 400.0 Hz Factory Setting: 0.00
These three parameters determine the three Skip Frequencies that in conjunction with Pr.70,
Skip Frequency Band, will cause the AC drive to skip operating in each frequency band. Note:
Pr.67 > Pr.68 > Pr.69.
Pr.70
Skip Frequency Band
Unit: 0.1 Hz
Settings 0.00 to 20.00 Hz Factory Setting: 0.00
This parameter determines the frequency band for a given Skip Frequency. Half of the Skip
Frequency Band is above the Skip Frequency and the other half is below. Programming this
parameter to 0.1 disables all skip frequencies.
output
freq.
Pr.67
Pr.68
Pr.69
0
Decelerating
skip freq.
set point
Accelerating
Pr.70
Freq. to
be jumped
Speed command
freqency
Adjustable
range
Pr.71
PWM Carrier Frequency
Settings 115V series
230V series
460V series
01 to 15 (1KHz to 15KHz)
Factory Setting: 15
VFD075M43A is 10
575V series 01 to 10 (1KHz to 10KHz) Factory Setting: 6
Note: 1-9kHz in sensorless vector control mode
The parameter defines the carrier frequency of the PWM (Pulse-Width Modulated) output.