2.3 Check of Spindle Motor, Inverter, and Converter
2-9
A guide line of parts replacement timing
Inverter and Converter comprise a lot of parts that make possible for Inverter and Converter to
achieve full functionality only when they work correctly.
Some of them need to be replaced according to their operating status. These parts must be
checked periodically and replaced depending on their service life to use Inverter and Converter
without trouble for a long time.
Standard service life of them depends on installation environment and operating situation.
Please refer to the replacement timing of each part in Inverter and Converter described in below
table.
Above table is described supposing:
• Ambient temperature : 30
°C
on average
• Load factor
: 80 % or less
• Availability
: 12 hours or less per day
Table 2.6 Replacement timing of the parts in Inverter and Converter
Parts
Replacement timing
Replacement method
Cooling fan
2 to 3 years
Replace with new one.
Smoothing capacitor
5 years
Replace with new one (after a check).
Circuit breaker
Relays
−
Determine after a check.
Fuse
10 years
Replace with new one.
Aluminum electrolytic capacitor
on print circuit board
5 years
Replace with new one (after a check).