HD2 Series Inverter Troubleshooting
-282-
R/W error occurred to the
control parameters.
EEPROM is damaged
Press STOP/RST to reset.
Replace the main control board
[22] PID feedback
offline fault
PID feedback offline.
PID feedback source
disappears;
Check PID feedback signal
wires.
Check PID feedback source
Braking circuit fault or
braking tube is damaged.
The resistance of external
braking resistor is too small
Check the braking unit, replace
with new brake tubes.
Increase brake resistance
The actual running time of
the inverter is larger than the
set running time
Ask help from the supplier,
adjust the set running time
[25] Electronic
overload fault
The inverter releases
overload pre-alarm based on
the set value
Check the load and overload
pre-alarm threshold
[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
[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
[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
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