Overvoltage; Undervoltage Fault - INVT Goodrive3000 Series Operation Manual

Goodrive3000 series medium voltage VFD

6.3.3 Overvoltage

Yes
Check the load and
adjust

6.3.4 Undervoltage fault

OV fault
Check if the voltage range is in
the standard one or not ?
Yes
Check if UVW is short
circuited to the earth and the
configuration of the output
side is right or not?
Yes
Check if the ACC/DEC
time is too short
No
Check if the load
motor is in abnormal
reverse running
No
If it is the VFD fault,
please contact with our
company
UV fault
If the voltage of the power
supply is in the standard
range
No
Check if the air switch and
contactor on the inside is off or
abnormal or not
No
Check if there is big power
device in the same power supply
No
Check that if there is
powering off during
the running of the VFD
No
If it is the VFD fault,
please contact with our
company
-185-
No
Ensure the power supply
meets the need
Yes
Settle the short circuit
and configure rightly
Whether increasing
Yes
the ACC/DEC time is
allowed
No
Check if it
needs to use
the options
No
Adjust the braking
options and the
resistance
Yes
Ensure the power supply
meets the need
Switch on the air switch
Yes
and contactor and settle
the abnormality
Yes
Adjust the power supply
Ensure the power off
Yes
reason and settle the
abnormal
Goodrive3000 inverter
Yes
Increase the ACC/DEC
time
Yes
Add braking options