INVT Goodrive20-UL VFD Series Operation Manual page 116

Goodrive20-UL Series VFD
Fault
code
upload error
[28] Parameter
DNE
download error
[32] To-ground
ETH1
short-circuit fault 1
[33] To-ground
ETH2
short-circuit fault 2
dEu
[35] Mal-adjustment
STo
Fault type








[34] Speed

deviation
fault

fault
Possible cause
good connection or
offline;
The keypad cable is
too long and there is
strong interference;
Part of the
communication
circuits of the keypad
or main board have
fault.
The keypad is not in
good connection or
offline;
The keypad cable is
too long and there is
strong interference;
Data storage error in
keypad
The output of the VFD
is short circuited with
the ground.
There is fault in the
current detection
circuit.
There is a great
difference between
the actual motorpower
setting and the VFD
power.
Load is too heavy, or
stall occurred.
Control parameters of
synchronous motor
-111-
Fault tracking
Solutions
environment and
eliminate the
interference source;

Change hardware and
ask for maintenance
service;

Change hardware and
ask for maintenance
service.

Check the
environment and
eliminate the
interference source;

Change hardware and
ask for maintenance
service;

Backup data in the
keypad again

Check if the
connection of the
motor is normal or not.

Change the hall.

Change the main
control panel.

Reset the correct
motor parameter.

Check the load to
ensure it is proper,
increase the detection
time.

Check whether control
parameters are set
properly.

Check the load to
ensure it is proper.