INVT Goodrive350 IP55 - Page 259

Goodrive350 IP55 High-ingress Protection Series VFD Troubleshooting
-250-
Fault
code
Fault type
Possible cause
Corrective measures
Current detection circuit is
faulty;
Actual motor power setup
deviates sharply from the
VFD power
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
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
fault
Motor over-temperature
input terminal is valid;
Exception occurred to t
temperature detection
Check the wiring of motor
over-temperature input
terminal (terminal function
57);