Morgensen MSI350 Series, User Manual, Page: 255 / 388

255
Fault
code
Fault type Possible cause Corrective measures
part of the main board
UPE
Parameter upload
error
The keypad wire is poorly
contacted or disconnected;
The keypad wire is too long
and suffers strong
interference;
Circuit fault occurred to the
keypad or communication
part of the main board
Check the surroundings to rule
out interference source;
Replace the hardware and ask
for maintenance service;
Replace the hardware and ask
for maintenance service
DNE
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
To-ground short
circuit fault 1
Inverter output is short
connected to the ground;
Current detection circuit is
faulty;
Actual motor power setup
deviates sharply from the
inverter power
Check whether motor wiring is
proper;
Replace the hall component;
Replace the main control board;
Reset the motor parameters
properly
ETH2
To-ground short
circuit fault 1
Inverter output is short
connected to ground;
Current detection circuit is
faulty;
Actual motor power setup
deviates sharply from the
inverter power
Check whether motor wiring is
proper;
Replace the hall component;
Replace the main control board;
Reset the motor parameters
properly
dEu 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 Maladjustment fault
Control parameters of
synchronous motor is set Check the load to ensure it is
proper,