Chziri ZVF200-M User Manual page 50

Skip Frequency 1
P 67
P 68 Skip Frequency 2
P 69
Skip Frequency 3
Settings
0.00 to 400.0 Hz
These three parameters determine the three Skip Frequencies that in
conjunction with P70,Skip Frequency Band, will cause the AC drive
to skip operating in each frequency band. Note:P67 > P68 > P69.
P 70 Skip Frequency Band
Settings
0.00 to 20.00 Hz
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.
Fig.6-23 Skip frequency setting
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Chapter 6 Parameters
Factory Setting
0.00
Factory Setting
0.00
Factory Setting
0.00
Factory Setting
0.00
PWM Carrier Frequency
P 71
Settings 01 to 15 (1KHz to 15KHz;vector control 1KHz 9KHz)
Note: 1-9kHz in sensorless vector control mode
The parameter defines the carrier frequency of the PWM (Pulse-
Width Modulated) output.
Electromagnetic
Carrier
Acoustic Noise Noise,Leakage
Frequency
Current
Significant
1KHz Minimal
Significant
15KHz Minimal
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.
Auto Restart Attempts After Fault
P 72
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 (P34).
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Chapter 6 Parameters
Factory Setting
15
Heat
Interference
Dissipation
Minimal Minimal
Significant Significant
Factory Setting
00