Delta VFD-B Series User Manual

Chapter 5 Parameters|VFD-B-P Series
Revision April 2009, SW V1.00 5-37
EF
Frequency
Frequency
frequency output
motor
speed
EF
operation
command
stops according to
decel eration time
When Pr.02-02 is set to 2 or 3
frequency
output
free run to stop
operation
command
When Pr.02-02 is set to 0 or 1
motor
speed
02 - 03
PWM Carrier Frequency Selections
Unit: 1
V/f Control
Power
3-7.5hp
2.2-5.5kW
10-30hp
7.5-22kW
40-60hp
30-45kW
Setting Range 01-15 kHz 01-09 kHz 01-06 kHz
Factory Setting 10 06 04
Vector Control
Power
3-25hp
2.2-18.5kW
30-60hp
22-45kW
Setting Range 01-15 kHz 01-09 kHz
Factory Setting 10 06
 This parameter determines the PWM carrier frequency of the AC motor drive.
1kHz
9kHz
15kHz
Carri er
Frequency
Acoustic
Noise
Electromagnetic
Noise or leakage
curr en t
He a t
Dissipation
Current
Wave
Significant
Minimal
Significant
Minimal
Minimal
Significant
Minimal
Significant
 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.
02 - 04 Motor Direction Control
Factory Setting: 00
Settings 00 Enable Forward/Reverse operation
01 Disable Reverse operation
02 Disabled Forward operation

Delta VFD-B Series Specifications

General

Series	VFD-B
Cooling Method	Fan cooling
Overload Capacity	150% for 60 seconds
Braking Unit	Built-in
Control Mode	V/F control, Sensorless Vector Control
Communication	RS-485
Protection Features	Overvoltage, Undervoltage, Overcurrent, Overload, Overtemperature, Short Circuit
Operating Temperature	-10°C to +50°C
Storage Temperature	-20°C to +60°C
Humidity	90% RH (non-condensing)
Altitude	1000m (Derating required above 1000m)