6.6 Smoothing capacitor lifespan curve
※80% of the ND rated current value for continuous drive.
1) The ambient temperature is considered to be
measured around 5 cm of the bottom centre of the
inverter (Atmosphere temperature). If the inverter is in
an enclosure, it will be the temperature inside the case.
6.7 Lifespan alarm output
・By the self-diagnostic, it is possible to output an alarm in
regards of the inverter own internal components lifespan when
the lifespan is nearing to its end (Including the circuit board
electrolytic capacitor and cooling-fan, and excluding the main
circuit smoothing capacitor). Use this to get a reference for
when the components should be replaced. Particularly,
consult the lifespan diagnosis monitor [dC-16] and the
output terminal function selection [CC-01]～[CC-07].
It should be noted that the warning itself is based on the
design lifespan, and thus, is not a guaranteed measurement.
Depending on the environment, the operation conditions, etc.
problems may arise, to avoid that, is recommended an early
maintenance.
2) The smoothing capacitor has a limited life because of
the chemical reactions occurring inside the capacitor
while operating. The capacitor should be replaced after
10 years *1) of use, as a reference standard (10 years is
not the guaranteed lifespan, but rather, the design
lifespan). Note that the smoothing capacitor lifespan
will be shortened if the inverter is used at a high
ambient temperature or with a heavy load that
requires a current beyond the rated current.
*1) Ambient temperature：annual average temperature 40℃(using in
without causticity gas, flammability gas, oil fog, dust, and so on)
Output Current：80% of the ND rated current value
Continuous Operation Hours：7000 Hours/year
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