Delta Electronics VFD-M manual Pr.67, Pr.68, Pr.69, Pr.70, Pr.71

		Chapter 4 Parameters
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		Adjustable
				range
		Pr.69
		0
				Speed command
				freqency
	Decelerating				Pr.70
	skip freq.
	set point				Freq. to
					be jumped
			Accelerating
Pr.71	PWM Carrier Frequency
	Settings 115V series					Factory Setting: 15
	230V series	01 to 15 (1KHz to 15KHz)
						VFD075M43A is 10
	460V series
	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.

Revision May 2008, ME14, SW V3.04 4-51