9.2 Servo Drive - OE Max Controls CSDJ Plus User Manual

9 - 4 CSDJ Plus Servo Drive User's Manual

9.2 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 Maintaining, Repair, and Check Method of Servo Motor
Symptom
Motor defect
Over-loaded
Motor does not
rotate
Loose coupling
between motor and
mechanical contact
System connection
wiring open or short
Ambient temperature
Over-loaded
Motor over
heated
Motor surface is
polluted with foreign
Defect motor
connection
Bad installation of
Check the
Bearing and gear
vibration or
trouble (motor side)
noise due to
the motor
Mechanical vibration
trouble
and noise of load side.
Motor bad contact
Cause Checking Method
Measure the resistance for
each wire of Motor U, V, W
phase lead by resistance test.
Operate with no load.
Check the connection part.
part
Check the connection of
wire.
circuit
Check whether the ambient
temperature is lower than
high
40℃.
Operate in non-load status.
Check whether motor
surface is polluted with
material foreign material.
Check the connection
status of UVW phase of
motor.
Mechanical part is loosened.
machine Coupling is misaligned
Check the bearing and gear
status
Check damage or error in
mechanical parts of load axis.
Check the U, V, W phase of
motor.
Cable - 3 years (Movable cable as standard)
Regeneration resistor - 2 years
FAN - 2 years
If each line resistance of motor is
different, replace the motor.
Troubleshooting
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.