Goodrive350A series high-performance multifunction VFD
Troubleshooting
-292-
Fault code
Fault type
Possible cause
Corrective measures
DNE
[28] Parameter
download error
The keypad wire is poorly
contacted or disconnected;
The keypad wire is too long
and suffers strong
interference;
Data storage error occurred
to the keypad
Check the surroundings to
rule out interference source;
Replace the hardware and
ask for maintenance service;
Re-backup keypad data
ETH1
[32] To-ground short
circuit fault 1
VFD output is short
connected to the ground;
Current detection circuit is
faulty;
Actual motor power setup
deviates sharply from the
VFD power
Check whether motor wiring is
proper;
Replace the hall component;
Replace the main control
board;
Reset the motor parameters
properly
ETH2
[33] To-ground short
circuit fault 1
VFD output is short
connected to ground;
Current detection circuit is
faulty;
Actual motor power setup
deviates sharply from the
VFD power
Check whether motor wiring is
proper;
Replace the hall component;
Replace the main control
board;
Reset the motor parameters
properly
dEu
[34] Speed deviation
fault
Load is too heavy, or stall
occurred
Check the load to ensure it is
proper, increase the detection
time;
Check whether control
parameters are set properly
STo
[35] Maladjustment
fault
Control parameters of
synchronous motor is set
improperly;
The parameter gained from
autotuning is inaccurate;
The VFD is not connected
to motor
Check the load to ensure it is
proper,
Check whether load is proper;
Check whether control
parameters are set correctly;
Increase maladjustment
detection time
LL
[36] Electronic
underload fault
The VFD performs
underload pre-alarm based
on the set value
Check the load and overload
pre-alarm threshold
ENC1o
[37] Encoder offline
fault
Encoder line sequence is
wrong, or signal wires are
Check the encoder wiring