Felhasználói Kézikönyv Mitsubishi Electronics Hegesztő Rendszer A800 [76/116 Oldalak]

Mitsubishi Electronics hegesztő rendszer A800

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Checklist before starting operation

PRECAUTIONS FOR USE OF THE INVERTER

A countermeasure is provided for an

overload operation.

When performing frequent starts/stops by the inverter, rise/fall in the

temperature of the transistor element of the inverter will repeat due to a

repeated flow of large current, shortening the life from thermal fatigue. Since

thermal fatigue is related to the amount of current, the life can be increased

by reducing current at locked condition, starting current, etc. Reducing

current may extend the service life but may also cause torque shortage,

which leads to a start failure. Adding a margin to the current can eliminate

such a condition. For an induction motor, use the inverter and the converter

unit of a higher capacity (up to two ranks). For a PM motor, use the inverter

and the converter unit, and PM motor of higher capacities.

The specifications and rating match

the system requirements.

Make sure that the specifications and rating match the system requirements. -

Checkpoint Countermeasure

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