Yaskawa MP940 Bedienungsanleitung Seite 369

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SERVOPACK Inspection, Maintenance, and Troubleshooting
10.1.1
Servomotor Inspection
10-2
10.1 Servodrive Inspection and Maintenance
This section describes the basic inspections and maintenance of servomotors and SERVO-
PACKs and the procedures for replacing the battery for absolute encoders.
10.1.1 Servomotor Inspection
For inspection and maintenance of servomotors, follow the simple, daily inspection proce-
dures 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 fre-
quency to suit the operating conditions and environment.
During inspection and maintenance, do not disassemble the servomotor. If disassembly of the servo-
motor is required, contact your Yaskawa representative.
Table 10.1 Servomotor Inspections
Measure across the servomotor FG and the Phase-U, Phase-V, or Phase-
W power line
10.1.2 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 10.2 SERVOPACK Inspections
Item Frequency Procedure Comments
Vibration and
Noise
Daily Touch and listen. Levels higher than nor-
mal?
Exterior According to degree
of contamination
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.*
Contact your Yaskawa
representative if the insu-
lation resistance is below
10 M.
Replacing Oil
Seal
At least once every
5000 hours
Remove servomotor from
machine and replace oil seal.
Applies only to motors
with oil seals.
Overhaul At least once every
20000 hours or 5
years
Contact your Yaskawa repre-
sentative.
The user should not dis-
assemble and clean the
servomotor.
Item Frequency Procedure Comments
Clean Interior
and Circuit
Boards
At least once a
year
Check for dust, dirt, and oil
on the surfaces.
Clean with compressed
air.
Loose Screws At least once a
year
Check for loose terminal
block and connector screws.
Tighten any loose
screws.
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