Specifications

Maintenance and Check
16.1.1
Checking Servo motor
16
-2
16.1 Checking Servo motor and SERVOPACK
16.1.1 Checking Servo motor
The following table shows how to conduct a daily check and maintenance of the Servo motor.
Since AC servo motors are brushless, you need not conduct any other checks than a brief, daily
check. The check timing in the table shows a guide line only; you need to define appropriate
check timing according to the motor operating conditions.
Do not disassemble the servo motor for the purpose of maintenance and check. Be sure to contact our
distributor or sales office nearest to you for dissassembly of motor.
∗
To be measured between FG and either of the motor power line U, V, and
W phases.
Table 16.1 Servo motor check
Check item Check timing Check/maintenance
method
Remark
Vibration and
sound check
Once per day Touching and hearing Shall not be larger than
normal
Appearance
check
According to the
degree of contamina-
tion
Cleaning with a cloth or air -
Insulation
resistance
measurement
Once per year at least Isolating the motor from
SERVOPACK, measure
insulation resistance using a
500 V megger tester. Normal
resistance is more than 10
MΩ*
If the resistance is 10
MΩ or less, contact our
service group.
Oil seal
replacement
Once per 5,000 hours
at least
Replace the seal by remov-
ing from a machine.
Only for a motor with an
oil seal
Overall check Once per 20,000
hours or 5 years at
least
Contact our service group. Do not disassemble or
clean the servo motors.
IMPORTANT