TECHTOP TD350 - Page 247

TD350 Series VFD Troubleshooting
-242-
Fault
code
Fault type
Possible cause
Corrective measures
EEP
[21] EEPROM fault
R/W error occurred to the
control parameters;
EEPROM is damaged
Press STOP/RST to reset;
Replace the main control board
PIDE
[22] PID feedback
offline fault
PID feedback offline;
PID feedback source
disappears;
Check PID feedback signal
wires;
Check PID feedback source
bCE
[23] 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
[24] Running time is
up
The actual running time of
the VFD is larger than the
set running time
Ask help from the supplier,
adjust the set running time
OL3
[25] Electronic
overload fault
The VFD releases overload
pre-alarm based on the set
value
Check the load and overload
pre-alarm threshold
PCE
[26] 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
part of the main board
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
UPE
[27] Parameter
upload error
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
Check the surroundings to rule
out interference source;
Replace the hardware and ask
for maintenance service;
Replace the hardware and ask
for maintenance service
DNE
[28] Parameter
download error
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
Check the surroundings to rule
out interference source;
Replace the hardware and ask
for maintenance service;
Re-backup keypad data