OE Max Controls CSDJ Plus User Manual page 179

Symptom
Motor does not
rotate
Motor over
heated
Check the
vibration or
noise due to
the motor
trouble
9-4
Servo Drive
Since the servo drive is designed with the electronic circuit, foreign
material or dust causes the malfunction. Thus, periodic (annual)
cleaning and tightening of screw is required.
* Replacement period of servo drive's each parts (on the basis of
20 hour operation per day)
Capacitor - 3 years
Power element - 3 years
DB Resistor - 2 years
Table 9.2 Troubleshooting Servo Motor
Cause
Measure the resistance for
Motor defect each wire of Motor U, V, W
phase lead by resistance test.
Over-loaded Operate with no load.
Loose coupling between
motor and mechanical Check the connection part.
contact part
System connection
wiring open or short Check the connection of wire.
circuit
Check whether the ambient
Ambient temperature
temperature is lower than 40
high
℃.
Over-loaded Operate in non-load status.
Motor surface is Check whether motor surface
polluted with foreign is polluted with foreign
material material.
Defect motor Check the connection status of
connection UVW phase of motor.
Bad installation of Mechanical part is loosened.
machine Coupling is misaligned
Bearing and gear Check the bearing and gear
trouble (motor side) status
Mechanical vibration Check damage or error in
and noise of load side. mechanical parts of load axis.
Check the U, V, W phase of
Motor bad contact
motor.
Cable - 3 years (Movable cable as
standard)
Regeneration resistor - 2 years
FAN - 2 years
Check Item
If each line resistance of motor is
different, replace the motor.
If the motor starts, make the load
light or replace the motor with
bigger capacity.
Tighten the loosened part and
replace the damaged part.
Correct it with reference to the
connection diagram of manual.
Make the ambient temperature
lower than
40℃.
Make the load light or replace the
motor with bigger capacity.
Clean the motor surface.
Replace the bad contact part and
repair the damaged part.
Correct the screw and mechanical
part to repair the misalignment of
coupling for balancing.
If it is the motor bearing trouble,
contact to our office.
Contact the machine maker.
Replace the bad contact and repair
the damaged part.
Action