INSPECTION, MAINTENANCE AND TROUBLESHOOTING
6.1.1 Servomotor
344
6.1 Inspection and Maintenance
This section describes the basic inspections and maintenance for Σ-Series servo drives.
6.1.1 Servomotor 344.....................................................
6.1.2 Servopack 345......................................................
6.1.3 Replacing Battery for Absolute Encoder 346............................
6.1.1 Servomotor
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 Procedure Comments
Vibration and
noise
Daily Touch and listen. Levels higher than normal?
Appearance According to
degree of
contamination
Clean with cloth or
compressed air.
Insulation
resistance
measurement
Yearly Disconnect Servopack and
test insulation resistance at
500 V. Must exceed 10 MΩ.
(See note below)
Contact your Yaskawa
representative if the
insulation resistance is
below 10 M
Ω
.
Replace oil seal Every 5,000
hours
Remove servomotor from
machine and replace oil seal.
Applies only to motors with
oil seal.
Overhaul Every 20,000
hours or 5 years
Contact your Yaskawa
representative.
The customer should not
disassemble and clean the
servomotor.
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.
6
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