Specifications

VFD-G Series
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7-4
Fault
Name
Fault Descriptions
Corrective Actions
Ground fault:
The AC drive output is
abnormal. When the output
terminal is grounded (short
circuit current is 50% more
than the AC drive rated
current), the AC drive power
module may be damaged.
The short circuit protection is
provided for AC drive
protection, not user protection.
Ground fault:
1. Check whether the IGBT power
module is damaged.
2. Check for possible poor insulation at
the output line.
External Base Block.
AC drive output is turned off.
(Refer to Pr. 08-08)
1. When the external input terminal
(B.B) is active, the AC drive output
will be turned off.
2. Disable this connection and the AC
drive will begin to work again.
Low Current
1. Check Load current
2. Check Pr.06-08 to Pr.06-10 setting
Phase Loss Check Power Source Input
Feedback Loss
Check Pr. 10-00 and wiring of feedback
signal.
GFF hardware error
CC (current clamp)
OC hardware error
OV hardware error
OH hardware error
Return to the factory
Internal memory IC cannot be
programmed.
1. Return to the factory.
2. Check the EEPROM on the control
board.
Internal memory IC cannot be
read.
1. Return to the factory.
2. Reset drive to factory defaults.
U-phase error
V-phase error
W-phase error
OV or LV
Isum error
OH error
Return to the factory