Specifications

5
VFD-G Series
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5-9
Motor
speed
Operation
Command
RUN
STOP
Stops according
to deceleration
time
Motor
Speed
Operation
Command
RUN
STOP
Free running
to stop
Frequency
Output
Frequency
Time
Frequency
Output
Frequency
Time
Ramp
Coast
02 - 03
PWM Carrier Frequency Selections
a
Factory Setting:
Depend on model type
Settings 1K~6KHz
 This parameter sets the carrier frequency of PWM output. The factory setting and setting
range depend on the model type.
 When the temperature of the heat sink is greater than its limit, the AC drive will automatic
lower the carrier frequency to avoid over heating the AC drive.
 The Carrier frequency of the PWM output has a signification influence on the
electromagnetic noise, heat dissipation of the AC drive, and the acoustic noise to the motor
as shown in the following chart.
Carrier
Frequency
Acoustic Noise Electromagnetic
Noise
Leakage
Current
Heat
Dissipation
Signification
Minimal
Minimal
Signification
Signification
Minimal
Signification
Minimal
Signification
Minimal
 When the carrier frequency is low, current ripple of the AC drive is large. This may result in a
current display value greater than the actual value.
02 - 04 Forward/Reverse Enabled Factory Setting: 00
Settings 00: Forward/Reverse enabled
01: Reverse disabled
02: Forward disabled
 This parameter enables the direction of the AC drive.