Kruger Ecowatt K320 Series Operation Manual page 261

Ecowatt Drive K320 series
®
Fault
Fault type
code
Motor
tE autotuning
fault
EEPROM
EEP
fault
PID feedback
PIDE
offline fault
Braking unit
bCE
fault
Running time
END
is up
Electronic
OL3
overload fault
Keypad
PCE communicati
on fault
Parameter
UPE
upload error
Possible cause
Motor capacity does not match
with the VFD capacity, this fault
may occur easily if the difference
between them is exceeds five
power classes;
Motor parameter is set improperly;
The parameters gained from
autotuning deviate sharply from
the standard parameters;
Autotuning timeout
R/W error occurred to the control
parameters;
EEPROM is damaged
PID feedback offline;
PID feedback source disappears;
Brake circuit fault or brake tube is
damaged;
The resistance of external braking
resistor is too small
The actual running time of the VFD
is larger than the set running time
The VFD releases overload
pre-alarm based on the set value
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
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
Change the VFD model, or adopt
V/F mode for control;
Set proper motor type and
nameplate parameters;
Empty the motor load and carry
out autotuning again;
Check motor wiring and
parameter setup;
Check whether upper limit
frequency is larger than 2/3 of
the rated frequency
Press STOP/RST to reset;
Replace the main control board
Check PID feedback signal
wires;
Check PID feedback source
Check the braking unit, replace
with new brake tubes;
Increase brake resistance
Ask help from the supplier,
adjust the set running time
Check the load and overload
pre-alarm threshold
Check the keypad wires to
confirm whether fault exists;
Check the surroundings to rule
out interference source;
Replace the hardware and ask
for maintenance service
Check the surroundings to rule
out interference source;
Replace the hardware and ask
for maintenance service;
Replace the hardware and ask
for maintenance service
-252-
Troubleshooting
Solution