INVT IPE300 Series - Page 261

IPE300 series engineering VFD Troubleshooting
-250-
Fault
code
Fault
No.
Fault type
Possible cause
Solution
DNE
28
Parameter
download error
Keypad cable connected
improperly or disconnected
Keypad cable too long,
causing strong interference
Keypad data storage error
Check for and remove the
external interference
source.
Replace the hardware and
seek maintenance services.
Re-back up the data on the
keypad.
ETH1
32
To-ground
short-circuit fault 1
The output of the VFD is short
circuited to the ground;
Current detection circuit is
faulty;
Actual motor power setup
deviates sharply from the VFD
power.
Check whether the motor
wiring is normal;
Replace the hall
component;
Replace the main control
board;
Reset the motor parameters
properly.
ETH2
33
To-ground
short-circuit fault 2
The output of the VFD is short
circuited to the ground;
Current detection circuit is
faulty;
Actual motor power setup
deviates sharply from the VFD
power.
Check whether the motor
wiring is normal;
Replace the hall
component;
Replace the main control
board;
Reset the motor parameters
properly.
dEu
34
Speed deviation
fault
The load is too heavy or
stalled.
Check the load to ensure it
is proper, and increase the
detection time;
Check whether the control
parameters are set properly.
STo
35
Mal-adjustment fault
SM control parameters are set
incorrectly;
Autotuned parameters are not
accurate;
The VFD is not connected to
the motor.
Check the load and ensure
the load is normal;
Check whether control
parameters are set correctly.
Increase the maladjustment
detection time.
LL
36
Electronic
underload fault
The VFD releases underload
pre-alarm based on the set
value.
Check the load and
overload pre-alarm
threshold