YASKAWA SGM Series User Manual page 264

Maintenance and Inspection
12.1.1 Servomotor Inspection
12.1 Maintenance and Inspection of Servodrives
12.1.1 Servomotor Inspection
IMPORTANT
12
Item
Vibration and Noise
Appearance and
Cleaning
Insulation Resistance
Measurement
Overhaul
Oil seal replacement (for
Motors equipped with
oil seals)
Simple daily inspections are all that are needed to maintain the Servomotor because it is brush-
less. The inspection and maintenance frequencies given in the following table are only guide-
lines, and may be increased or decreased to suit driving conditions and environment.
Do not disassemble the Servomotor during inspection and maintenance, but rather contact your Yaskawa repre-
sentative if the Servomotor must be disassembled.
Table 12.1 Maintenance and Inspection Procedure
Frequency
Daily Touch and listen for irregularities.
According to the degree Clean with a cloth or compressed air.
of dirt
Yearly Disconnect the SERVOPACK and test in-
sulation resistance at 500 V. Must exceed
10 MΩ.
Every 20000 hours or 5 Remove the Servomotor, replace consum-
years able parts and perform any necessary repairs.
Every 5000 hours Remove the Servomotor and replace the oil
seal.
J Guidelines for Replacing Parts
The following parts are subject to mechanical wear or deterioration over time. To avoid failure,
replace these parts periodically as indicated below.
Table 12.2 Parts Replacement
Part Standard Replacement
Bearings 20000 operating hours
Oil Seal About 5000 hours
Procedure
Period
Disassemble the Servomotor and replace the bearings if
necessary.
Replace with a new oil seal.
12 -2
Comments
The degree of vibration and noise
must not be any higher than nor-
mal.
−−−
Contact your Yaskawa representa-
tive if insulation resistance is be-
low 10 MΩ..
Contact your Yaskawa representa-
tive for the overhaul.
−−−
Replacement Method