TECHTOP TD20 Series - Communication Protocol; 7.1 Brief instruction to Modbus protocol

TD20 Series VFD Fault Tracking
-93-
Fault code
Fault type
Possible cause
Solutions
not right.
3. The VFD is not connected
to the motor.
not.
3. Increase the maladjustment
detection time.
END
Time reach of factory
setting
The actual running time of the
VFD is above the internal
setting running time.
Ask for the supplier and adjust
the setting running time.
PCE
Keypad
communication error
The keypad is not in good
connection or offline;
The keypad cable is too long
and there is strong
interference;
Part of the communication
circuits of the keypad or main
board have fault.
Check the keypad cable and
and ensure it is normal;
Check the environment and
eliminate the interference
source;
Change hardware and ask for
maintenance service.
UPE
Parameter upload
error
The keypad is not in good
connection or offline;
The keypad cable is too long
and there is strong
interference;
Part of the communication
circuits of the keypad or main
board have fault.
Check the environment and
eliminate the interference
source;
Change hardware and ask for
maintenance service;
Change hardware and ask for
maintenance service.
DNE
Parameter download
error
The keypad is not in good
connection or offline;
The keypad cable is too long
and there is strong
interference;
Data storage error in keypad
Check the environment and
eliminate the interference
source;
Change hardware and ask for
maintenance service;
Backup data in the keypad
again
ETH1
Grounding shortcut
fault 1
1. The output of the VFD is
short circuited with the ground
1. Check if the connection of
the motor is normal or not