Goodrive3000 series medium voltage VFD
Goodrive3000 inverter
-143-
6.3.4 Undervoltage
Undervoltage fault
Whether the VFD is
powered off during
running?
Whether the voltage of the
power supply is within the
standard range?
Ensure the power supply
meet the requirement
Whether the air switch and
contactor are opened or
encounter exceptions?
Close the air switch and
contactor; and rectify the
exceptions
Adjust the input of the
grid
Identify the power-off
causes, and rectify the
exceptions
If it is a VFD fault, contact
our company
Whether a large-power device
is running on the grid that pulls
down the voltage of the grid?
Yes
No
Yes
No
Yes
No
Yes
No
6.3.5 Motor overheating
Unusual heating of the
motor
Set the motor
parameters
correctly
Whether parameter
autotuning is
performed?
Parameter
autotune
Whether the VFD runs at a
low speed all the time?
Use a variable-
frequency motor
Reduce the
load
Replace the
motor
Set the carrier
frequency
properly
Add an output
filter
If it is a VFD fault, contact
our company
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
Whether the motor
parameters are set
correctly?
Whether it is a variable-
frequency motor?
Whether the load is
too heavy?
Whether the three
phases of the motor are
balanced?
Whether the carrier
frequency is too low?
Whether the motor
cable is too long?
No
