Pwm Carrier Frequency Selections - Delta VFD-B User Manual

Frequency
operation
command
EF
When Pr.02-02 is set to 2 or 3
02 - 03

PWM Carrier Frequency Selections

Power
Setting Range
Factory Setting
Power
Setting Range
Factory Setting
This parameter determines the PWM carrier frequency of the AC motor drive.
Carrier
Frequency
1kHz
8kHz
15kHz
From the table, we see that the PWM carrier frequency has a significant influence on the
electromagnetic noise, AC motor drive heat dissipation, and motor acoustic noise.
Revision July 2008, BE16, SW V4.08 & V5.00
frequency output
motor
speed
stops according to
decel eration time
230V/460V Series
1-5hp
0.75-3.7kW
01-15 kHz
15 kHz
575V Series
1-15hp
0.75-11kW
01-10 kHz
06 kHz
Electromagnetic
Acoustic
Noise or leakage
Noise
current
Minimal
Significant
Minimal
Significant
Chapter 5 Parameters|VFD-B Series
Frequency
frequency
output
operation
command
EF
When Pr.02-02 is set to 0 or 1
7.5-25hp 30-60hp
5.5-18.5kW 22-45kW
01-15 kHz 01-09 kHz
09 kHz
20-60hp
15-45kW
01-08 kHz
06 kHz
Heat
Dissipation
Minimal
Significant
motor
speed
free run to stop
75-100hp
55-75kW
01-06 kHz
06 kHz 06 kHz
75-100hp
55-75kW
01-06 kHz
06 kHz
Current
Wave
Minimal
Significant
Unit: 1
5-37