IMO HD2-3.7A-43 - 7.6.6 Inverter overheating

HD2 Series Inverter Troubleshooting
-283-
Fault
code
Fault type
Possible cause
Corrective measures
ETH1
[32] 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
[33] 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
[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 inverter 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 inverter 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
poorly connected
Check the encoder wiring
ENC1D
[38] Encoder
reversal fault
The encoder speed signal is
contrary to the motor running
direction
Reset encoder direction
ENC1Z
[39] Encoder Z pulse
offline fault
Z signal wires are
disconnected
Check the wiring of Z signal
OT
[59] Motor
over-temperature
Motor over-temperature
input terminal is valid.
Check the wiring of motor
over-temperature input terminal