Mitsubishi Electric MELSERVO-JN Series, Instruction Manual

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2. INSTALLATION
2.5 Parts having service lives
Service lives of the following parts are listed below. However, the service life varies depending on operating
methods and environmental conditions. If any fault is found in the parts, they must be replaced immediately
regardless of their service lives. For parts replacement, please contact your local sales office.
Part name Life guideline
Smoothing capacitor 10 years
Relay
Number of power-on and number of forced stop times:
100,000 times
(1) Smoothing capacitor
Affected by ripple currents, etc. and deteriorates in characteristic. The life of the capacitor greatly depends
on ambient temperature and operating conditions. The capacitor will reach the end of its life in 10 years
when operated continuously in an air-conditioned environment (ambient temperature of 40 ˚C or less).
(2) Relays
Their contacts will wear due to switching currents and contact faults occur. Relays reach the end of their life
when the cumulative number of power-on and forced stop times is 100,000, which depends on the power
supply capacity.