To check the volume of the rectifier and variable frequency inverters do as follows:

- Shut off the power inverter and the engine, disconnect the brake resistor (P / +2, RB)

- Use the meter resistance measurement mode (usually in the scale 1Ω)

- Status of the inverter can be tested by measuring the R/L1, S/L2, T/L3, U/T1, V/T2, W/T3, RB, P / +2, N / -

Note:

- Before the inspection, measuring voltage DC bus between the legs of P / +2 and N / - to ensure the filter capacitor has discharged.

- Block BRD filter in the inverter power 22KW and smaller.

Block diagram of two rectifiers and inverters, as follows: 

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• 22/05/2011 16:03 - Repairing Omron Inverter

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