vvvf drives

greenspun.com : LUSENET : Elevator Problem Discussion : One Thread

I have been involved in the application of vvvf technology in the lift industry for a while now, and have had promising results grafting vvvf drives onto existing 2-speed ac systems. The drive I favour is manufactured in New Zealand by PDL, now a subsidiary of SCHNEIDER ELECTRIC With careful design a ride rivalling that of a purpose designed vvvf control system can be achieved in around 1 week by one person.(a VERY cheap mod.)

-- mark lennon (dudnstud@iprimus.com.au), August 17, 2002



Point being?

-- john m (johnny@yahoo.com), August 18, 2002.

Yeah anything cheap might last the warranty period if its lucky....what about tech backup etc.....weve heard it all before mate

-- dayle (daylebrenda@iprimus.com.au), November 05, 2002.

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