7.3 List of Periodic Replacement Parts
7-7
Chapter 7 MAINTENANCE AND INSPECTION
If the measurement has failed, "0001" is entered into each of the function codes H42 (Capacitance o
of the failure and conduct the measurement again.
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Hereafter, each time the inverter is turned OFF, it automatically measures the discharging time of the DC
link bus capacitor if the above conditions are met. Periodically check the capacitance (%) of the DC link
bus capacitor with Menu #5 "Maintenance Information" in Programming mode.
The condition given above may produce a rather large measurement error. If this mode gives you a
lifetime alarm, revert the life judgment threshold of the DC link bus capacitor to the default setting, and
conduct measurement again under the condition at the time of factory shipment.
(3) Early warning of lifetime alarm
For the components listed in Table 7.3-2, the inverter can issue an early warning of lifetime alarm LIFE at
one of the transistor output terminals [Y1] through [Y4] and relay output terminals [Y5A/C] and [30A/B/C],
as soon as any one of such components have passed the judgment criteria.
The early warning signal is also turned ON when a lock condition on the internal air circulation DC fan has
been detected. (provided on 45 kW or above for 200 V class series, and on 75 kW or above for 400 V
class series).
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