Specifications

VFD-M Series

5-34

 The parameter defines the carrier frequency of the PWM (Pulse-Width Modulated)

output.

Carrier Frequency Acoustic Noise

Electromagnetic

Noise, Leakage

Current

Heat Dissipation

1KHz

15KHz

Significant

Minimal

Significant

Minimal

Significant

 From the above table, we see that the carrier frequency of PWM output has a significant

influence on the electromagnetic noise, heat dissipation of the AC drive, and the acoustic

noise to the motor.

Pr.72

Auto Restart Attempts After Fault Factory Setting: 00

Settings 00 to 10

 When this parameter is enabled (set different to zero), the AC Drive will restart/reset

automatically up to 10 times after the occurrence of certain type of faults (over-current

OC, over-voltage OV). If enabled, the AC drive will restart on “speed search”, which

begins at Master Frequency. Setting this parameter to 0 will disable this operation. To set

the fault recovery time after a fault, please see base-block time for speed search (Pr.34).

Pr.73

Present Fault Record Factory Setting: 00

Pr.74

Second Most Recent Fault Record Factory Setting: 00

Pr.75

Third Most Recent Fault Record Factory Setting: 00

Settings 00

(no fault occurred )

Over-current (oc)

Over-voltage (ov)

Overheat (oH)

Overload (oL)

Overload 1 (oL1)

External Fault (EF)

CPU failure 1 (CF1)

CPU failure 3 (CF3)

Hardware Protection Failure (HPF)