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I have just fitted a 4kW invertor to a 3Kw three phase motor which runs a conveyer. All settings are as it always use to be when it was DOL with a running speed at 50hZ.
All was fine for half a day, and now the invertor is tripping out on overload about once an hour. The conveyer only runs for about 5 mins every 20 mins. The Thermal overload (set to 6.6A as FLC on motor plate says) also is tripping occasionally. All paramaters on the invertor are correct. Is there anyway running the motor through the invertor could cause the motor to be underpowered/draw more current? I am heading back tomorrow morning to take a look, but just wanted some ideas first.
All was fine for half a day, and now the invertor is tripping out on overload about once an hour. The conveyer only runs for about 5 mins every 20 mins. The Thermal overload (set to 6.6A as FLC on motor plate says) also is tripping occasionally. All paramaters on the invertor are correct. Is there anyway running the motor through the invertor could cause the motor to be underpowered/draw more current? I am heading back tomorrow morning to take a look, but just wanted some ideas first.