Check input power supply
or wiring
Replace with higher-rating
controller
Broken wires in the output
cable
Check the wiring and
installation
Broken wires in the motor
winding
Instantaneous over-current of
controller
Refer to over-current
remedy
Cooling fans of controller
stopped or damaged.
Obstruction of ventilation
channel
Replace cooling fan and
clear the ventilation
channel
Too-high ambient temperature
Decrease the ambient
temperature if possible
Loose cables or terminals
Inspect and tighten the
wire and terminals
Abnormal control PCB board
Improper baud rate setting
Push STOP/RESET to
reset and ask for support
Long-time communication
interruption
Check communication
devices and cables
Loose wires or connectors of
control board
Check the wiring and
connectors
Amplifying circuit abnormal