XtraDrive User Manual Chapter 9 : Inspection, Maintenance, and Troubleshooting
9-2
9.1. XtraDrive Inspection and Maintenance
This section describes the basic inspections and maintenance of servomotors
and servo amplifiers and the procedures for replacing the battery for absolute
encoders.
9.1.1. Servomotor Inspection
For inspection and maintenance of servomotors, follow the simple,
daily inspection procedures in the following table.
The AC servomotors are brushless. Simple, daily inspection is
sufficient under most conditions. The inspection and maintenance
frequencies in the table are only guidelines. Increase or decrease the
frequency to suit the operating conditions and environment.
IMPORTANT
•
During inspection and maintenance, do not disassemble the servomotor.
If disassembly of the servomotor is required, contact Yaskawa.
Servomotor Inspection
Action or Problem
Frequency Procedure Comments
Vibration and Noise Daily Touch and listen. Levels higher than normal?
Exterior Dirt
According to degree of
contamination
Clean with cloth or
compressed air.
—
Insulation
Resistance
Measurement
At least every year
Disconnect servo amplifier
and test insulation
resistance at 500V. Must
exceed 10MΩ*
Contact Yaskawa if the
insulation resistance is
below10MΩ
Oil Seal
Replacement
At least every 5000
hours
Remove servomotor from
machine and replace oil
seal.
Applies only to motors with
oil seals.
Servomotor
Overhaul
At least every 20000
hours or 5 years
Contact YET
The user should not
disassemble and clean the
servomotor.
* Measure across the servomotor FG and the U-phase, V-phase, or W-phase power line
9.1.2. Servo Amplifier Inspection
For inspection and maintenance of the servo amplifier, follow the
inspection procedures in the table below. Perform inspection and
maintenance at least once a year. Other routine inspections are not
required.
Action or Problem
Frequency Procedure Comments
Clean interior and circuit
boards
At least every year
Check for dust, dirt, and oil
on the surfaces.
Clean with compressed
air.
Loose screws At least every year
Check for loose terminal
block and connector screws.
Tighten any loose
screws.
Defective parts in unit or
on circuit boards
At least every year
Check for discoloration,
damage or discontinuities
due to heating.
Contact YET
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