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Inspection, Maintenance, and Troubleshooting
9.1.1 Servomotor Inspection
9 -2
9.1 Servodrive Inspection and Maintenance
This section describes the basic inspections and maintenance of Servomotors and Servopacks and
the procedures for replacing the battery for absolute encoders.
9.1.1 Servomotor Inspection
For inspection and maintenance of Servomotors, followthe simple, daily inspection procedures
in the following table.
The AC Servomotors are brushless. Simple, daily inspection is sufficient. The inspection and
maintenance frequencies in the table are only guidelines. Increase or decrease the frequency to
suit the operating conditions and environment.
During inspection and maintenance, do not disassemble the Servomotor. If disassembly of the Servomotor is
required, contact your Yaskawa representative.
Table 9.1
Servomotor Inspections
Item
Frequency
Procedure
Comments
Vibration and
Noise
Daily
Touch and listen.
Levels higher than normal?
Exterior
According to de-
gree of contamina-
tion
Clean with cloth or com-
pressed air.
--
Insulation
Resistance
Measurement
At least once a
year
Disconnect Servopack and
test insulation resistance at
500 V. Must exceed
10 M
W
.*
Contact your Yaskawa rep-
resentative if the insulation
resistance is below 10 M
W
.
Replacing Oil
Seal
At least once ev-
ery 5000 hours
Remove Servomotor from
machine and replace oil
seal.
Applies only to motors with
oil seals.
Overhaul
At least once ev-
ery 20000 hours or
5 years
Contact your Yaskawa rep-
resentative.
The user should not disas-
semble and clean the Servo-
motor.
*
Measure across the Servomotor FG and the U-phase, V-phase, or W-phase power
line
9
IMPORTANT
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