INVT Goodrive350 Series Operation Manual page 293

Goodrive350 series high-performance multifunction VFD
Fault
Fault type
code
[32] To-ground short
ETH1
circuit fault 1
[33] To-ground short
ETH2
circuit fault 1
[34] Speed deviation
dEu
[35] Maladjustment
STo
[36] Electronic
LL
underload fault
[37] Encoder offline
ENC1o
[38] Encoder
ENC1d
reversal fault
[39] Encoder Z pulse
ENC1Z
offline fault
[59] Motor
OT
over-temperature
VFD output is short
connected to the ground;
Current detection circuit is
faulty;
Actual motor power setup
deviates sharply from the
VFD power
VFD output is short
connected to ground;
Current detection circuit is
faulty;
Actual motor power setup
deviates sharply from the
VFD power
Load is too heavy, or stall
fault occurred
Control parameters of
synchronous motor is set
improperly;
The parameter gained from
fault
autotuning is inaccurate;
The VFD is not connected to
motor
The VFD performs
underload pre-alarm based
on the set value
Encoder line sequence is
wrong, or signal wires are
fault
poorly connected
The encoder speed signal is
contrary to the motor running
direction
Z signal wires are
disconnected
Motor over-temperature
input terminal is valid;
Possible cause
-284-
Troubleshooting
Corrective measures
Check whether motor wiring is
proper;
Replace the hall component;
Replace the main control
board;
Reset the motor parameters
properly
Check whether motor wiring is
proper;
Replace the hall component;
Replace the main control
board;
Reset the motor parameters
properly
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,
Check whether load is proper;
Check whether control
parameters are set correctly;
Increase maladjustment
detection time
Check the load and overload
pre-alarm threshold
Check the encoder wiring
Reset encoder direction
Check the wiring of Z signal
Check the wiring of motor
over-temperature input terminal