Morgensen MSI350 Series, User Manual, Page: 254 / 388

254
Fault
code
Fault type Possible cause Corrective measures
amplification circuit
tE
Motor autotuning
fault
Motor capacity does not
match with the inverter
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
Change the inverter 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
EEP EEPROM fault
R/W error occurred to the
control parameters;
EEPROM is damaged
Press STOP/RST to reset;
Replace the main control board
PIDE
PID feedback offline
fault
PID feedback offline;
PID feedback source
disappears; Check PID feedback signal
wires;
Check PID feedback source
bCE Brake unit fault
Brake circuit fault or brake
tube is damaged;
The resistance of external
brake resistor is too small
Check the brake unit, replace
with new brake tubes;
Increase brake resistance
END Running time is up
The actual running time of the
inverter is larger than the set
running time
Ask help from the supplier,
adjust the set running time
OL3
Electronic overload
fault
The inverter releases
overload pre-alarm based on
the set value
Check the load and overload
pre-alarm threshold
PCE
Keypad
communication fault
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
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