Yaskawa CACR-SRxxBF - Manual (Page 56)

5.4 Inspection and Maintenance
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5.4 Inspection and Maintenance
5.4.1 Servomotor Inspection
The AC servomotors are brushless. Simple daily inspection is sufficient. The inspection and maintenance fre-
quencies in the table are only guidelines. Increase or decrease the frequency to suit the operating conditions and
environment.
During inspection and maintenance, do not disassemble the servomotor.
* Measure across the servomotor’s FG and the phase-U, phase-V, or phase-W power line.
5.4.2 SERVOPACK Inspection
5.4.3 SERVOPACK’s Parts Replacement Schedule
The following electric or electronic parts are subject to mechanical wear or deterioration over time. To avoid fail-
ure, replace these parts at the frequency indicated.
The parameters of any SERVOPACKs overhauled by Yaskawa service division are reset to the factory settings
before shipping. Be sure to confirm that the parameters are properly set before starting operation.
Item Frequency Procedure Comments
Vibration and Noise Daily Touch and listen. Levels higher than normal?
Exterior
According to degree of
contamination
Clean with cloth or compressed air. −
Insulation Resistance
Measurement
At least once a year
Disconnect SERVOPACK and test
insulation resistance
at 500 V. Must exceed 10 M
Ω . ∗
Contact the Yaskawa service
division if the insulation resis-
tance is below 10 M
Ω.
Replacing Oil Seal
At least once every
5000 hours Remove the servomotor and
replace the oil seal. Applies only to servomotors
with oil seals.
Overhaul
At least once every
20000 hours or 5 years Contact the Yaskawa service
division. Do not disassemble and clean
the servomotor by yourself.
IMPORTANT
Item Frequency Procedure Comments
Exterior and Boards
At least once a year
Check for dust, dirt, and oil on the surfaces. Clean with compressed air.
Check for discoloration, damage, and dis-
connected wires on the surfaces.
Contact the Yaskawa service
division.
Loose Screws
Check for loose terminal block and connec-
tor screws.
Tighten any loose screws.
Part
Standard
Replacement
Period
Recommendations Operating Conditions
Cooling Fan 4 to 5 years Replace with a new SERVOPACK.
• Ambient Temperature: Annual
average of 30 °C
• Load Factor: 80% max.
• Operation Rate: 20 hours/day max.
Smoothing Capacitor 7 to 8 years
Replace with a new SERVOPACK.
(Depending on results of investigation.)
Relays −
Replace with a new SERVOPACK.
(Depending on results of investigation.)
Fuses 10 years Replace with a new SERVOPACK.
Aluminum Electrolytic
Capacitor on Circuit Board
5 years
Replace with a new SERVOPACK.
(Depending on results of investigation.)