Yaskawa Σ-mini Series - Manual (Page 21)

7.1 Servomotor
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7 INSPECTION AND MAINTENANCE
7.1 Servomotor
For inspection and maintenance of Servomotors, follow the simple, daily inspection procedures in
the table below.
The AC Servomotors are brushless. Simple, daily inspection is sufficient. The inspection and main-
tenance frequencies in the table are only guidelines. Increase or decrease the frequency 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 de-
gree of contami-
nation Clean with cloth or compressed
air.
Insulation resis-
tance measure-
ment At least once a
year Disconnect SERVOPACK and
test insulation resistance at 500 V.
Must exceed 10 MΩ.* Contact your YASKAWA repre-
sentative if the insulation resis-
tance is below 10 MΩ.
Replace oil seal At least once ev-
ery 5,000 hours Remove servomotor from ma-
chine and replace oil seal. Applies only to motors with oil
seal.
Overhaul At least once ev-
ery 20,000 hours
or 5 years Contact your YASKAWA repre-
sentative. The customer should not disas-
semble and clean the Servomo-
tor.
* Measure across the Servomotor FG (Green/Yellow) and the U-phase (Red), V-phase (White), or
W-phase (Blue) power lead.
7.2 SERVOPACK
The SERVOPACK contains highly reliable parts and daily inspection is not required. Carry out the
inspections and maintenance in the table below once every year.
Item Frequency Procedure Remedy
Clean unit interior and cir-
cuit boards At least once
a year Check for dust, dirt, and oil on the sur-
faces. Cleanwithcompressedair.
Loose screws At least once
a year Check for loose terminal block and
connector screws. Tighten any loose screws.
Defective parts in unit or
on circuit boards. At least once
a year Check for discoloration, damage or
discontinuities due to heating. Contact your YASKAWA
representative.