Maintenance and Inspection
12.1.1 Servomotor
12 -2
12.1 Servodrive Maintenance and Inspection of Servodrives
12.1.1 Servomotor
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 Inspection Items
Item
Frequency
Procedure
Comments
Vibration and Noise
Daily
Touch and listen.
The degree of vibration and noise
must not be any higher than nor-
mal.
Appearance and
Cleaning
According to the degree
of dirt
Clean with a cloth or compressed air.
−
Insulation resistance
measurement
At least once a year
Disconnect the SERVOPACK and test in-
sulation resistance at 500 V. Must exceed
10 M
Ω
.
Contact your Yaskawa representa-
tive if insulation resistance is be-
low 10 M
Ω
..
Overhaul
At least once every
20,000 hours or 5 years
Remove the Servomotor, replace consum-
able parts and perform any necessary repairs.
Contact your Yaskawa representa-
tive for the overhaul.
Oil seal replacement (for
Motors equipped with
oil seals)
At least once every
5,000 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
Period
Replacement Method
Bearings
20,000 operating hours
Disassemble the Servomotor and replace the bearings if
necessary.
Oil Seal
About 5,000 hours
Replace with a new oil seal.
12
IMPORTANT