Specifications

VFD-G Series
DELTA ELECTRONICS, INC. ALL RIGHTS RESERVED
7-2
Fault
Name
Fault Descriptions
Corrective Actions
The AC drive temperature
sensor detects excessive heat.
1. Ensure that the ambient temperature
falls within the specified temperature
range.
2. Make sure that the ventilation holes
are not obstructed.
3. Remove any foreign objects on the
heatsinks and check for possible dirty
heat sink fins.
4. Provide enough spacing for adequate
ventilation.
The AC drive detects that the
DC bus voltage has fallen
below its minimum value.
Check whether the input voltage falls
within the rated AC drive’s input
voltage.
The AC drive detects
excessive drive output current.
Note: The AC drive can
withstand up to 150% of the
rated current for a maximum of
60 seconds.
1. Check whether the motor is
overloaded.
2. Reduce torque compensation setting
as set in Pr.7-02.
3. Increase the AC drive’s output
capacity, i.e. bigger horsepower
drive.
Internal electronic overload trip
1. Check for possible motor overload.
2. Check electronic thermal overload
setting.
3. Increase motor capacity, i.e. larger
horsepower motor.
4. Reduce the current level so that the
drive output current does not exceed
the value set by the Motor Rated
Current Pr.7-00.
Motor overload. Check the
parameter settings
(Pr.6-03 to Pr.6-05)
1. Reduce the motor load.
2. Adjust the over-torque detection
setting to an appropriate setting
(Pr.06-03 to Pr.06-05).
Communication Error
1. Check the connection between the
AC drive and computer for loose
wires.
2. Check if the communication protocol
is properly set.