Chapter 6 Inspection, Maintenance, And Troubleshooting - YASKAWA SGM-A3 User Manual

INSPECTION, MAINTENANCE, AND TROUBLESHOOTING
6.1.1 Servomotor
6.1 Inspection and Maintenance
6.1.1 Servomotor
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This section describes the basic inspections and maintenance for Σ-Series servo drives.
6.1.1 Servomotor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.1.2 Servopack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.1.3 Replacing Battery for Absolute Encoder
For inspection and maintenance of servomotors, follow the simple, daily inspection proce-
dures in the table below.
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 frequen-
cy to suit the operating conditions and environment.
Item Frequency
Vibration and Daily
noise
Appearance According to
degree of
contamination
Insulation Yearly
resistance
measurement
Replace oil seal Every 5,000
hours
Overhaul Every 20,000
hours or 5 years
Note Measure across the servomotor FG (green/yellow) and the U-phase (red), V-
phase (white), or W-phase (blue) power lead.
During inspection and maintenance, do not disassemble the servomotor.
If disassembly of the servomotor is required, contact your Yaskawa representative.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Procedure
Touch and listen.
Clean with cloth or
compressed air.
Disconnect Servopack and
test insulation resistance at
500 V. Must exceed 10 MΩ.
(See note below)
Remove servomotor from
machine and replace oil seal.
Contact your Yaskawa
representative.
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389
390
Comments
Levels higher than normal?
Contact your Yaskawa
representative if the
insulation resistance is
below 10 MΩ.
Applies only to motors with
oil seal.
The customer should not
disassemble and clean the
servomotor.