11.2 Inspection and Maintenance
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11.2 Inspection and Maintenance
11.2.1 Servomotor Inspection
The AC servomotors are brushless. Simple, daily inspection is sufficient. The inspection and maintenance fre-
quencies 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.
* Measure across the servomotor FG and the phase-U, phase-V, or phase-W power line.
11.2.2 SERVOPACK Inspection
For inspection and maintenance of the SERVOPACK, follow the inspection procedures in the following table
at least once every year. Other routine inspections are not required.
Table 11.6 Servomotor Inspections
Item Frequency Procedure Comments
Vibration and Noise Daily Touch and listen. Levels higher than normal?
Exterior According to degree
of contamination
Clean with cloth or compressed
air.
−
Insulation Resistance
Measurement
At least once a year Disconnect SERVOPACK and
test insulation resistance
at 500 V. Must exceed 10 MΩ .
∗
Contact your Yaskawa repre-
sentative if the insulation
resistance is below 10 MΩ .
Replacing Oil Seal At least once every
5000 hours
Contact your Yaskawa represen-
tative.
Applies only to servomotors
with oil seals.
Overhaul At least once every
20000 hours or 5
years
Contact your Yaskawa represen-
tative.
−
IMPORTANT
Table 11.7 SERVOPACK Inspections
Item Frequency Procedure Comments
Exterior At least once a year Check for dust, dirt, and oil
on the surfaces.
Clean with compressed
air.
Loose Screws Check for loose terminal
block and connector
screws.
Tighten any loose screws.
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