Kruger Ecowatt K320 Series Operation Manual page 262

Ecowatt Drive K320 series
®
Fault
Fault type
code
Parameter
DNE download
error
To-ground
ETH1 short circuit
fault 1
To-ground
ETH2 short circuit
fault 1
Speed
dEu deviation
fault
Maladjustme
STo
nt fault
Electronic
LL underload
fault
Encoder
ENC1O
offline fault
Encoder
ENC1D
reversal fault
Possible cause
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
Inverter output is short connected
to the ground;
Current detection circuit is faulty;
Actual motor power setup deviates
sharply from the VFD power
Inverter 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 occurred
Control parameters of synchronous
motor is set improperly;
The parameter gained from
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 poorly connected
The encoder speed signal is
contrary to the motor running
direction
Check the surroundings to rule
out interference source;
Replace the hardware and ask
for maintenance service;
Re-backup keypad data
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
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Troubleshooting
Solution