Yaskawa Large Capacity Sigma II Series - Manual (Page 342)

8.1 Servodrive Inspection and Maintenance
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8.1.2 SERVOPACK Inspection
For inspection and maintenance of the SERVOPACK, follow the inspection procedures in
the following table at least once every year. Other routine inspections are not required.
„ Part Replacement Schedule
The following 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 are reset to the standard set-
tings before shipping. Be sure to confirm that the parameters are properly set before starting
operation.
Operating Conditions:
• Ambient Temperature: Annual average of 30 °C
• Load Factor: 80% max.
• Operation Rate: 20 hours/day max.
Table 8.2 SERVOPACK Inspections
Item Frequency Procedure Comments
Clean Interior
and Circuit
Boards At least once a
year Check for dust, dirt, and oil
on the surfaces. Clean with compressed air
or cloth.
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 Cir-
cuit Boards At least once a
year Check for discoloration,
damage or discontinuities
due to heating. Contact your Yaskawa rep-
resentative.
Table 8.3 Periodical Part Replacement
Part Standard Replace-
ment Period
Replacement Method
Cooling Fan 4 to 5 years Replace with new part.
Smoothing Capacitor
7 to 8 years Test. Replace with new part.
Relays - Test. Replace if necessary.
Fuse 10 years Replace with new part.
Aluminum
Electrolytic
Capacitor on
Circuit Board 5 years Test. Replace with new circuit board if neces-
sary.