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Joined: Mar 2004
Posts: 947
T
twh Offline
Member
I thought the elevator feed also fed the controls. Can a vfd output be used for controls? At least a rotary phase converter has two legs with a steady voltage, but the connection would be important.

Joined: Sep 2011
Posts: 21
A
Member
Check with the elevator people. I had a project with a number of Kone elevators, and they would not except anyting but a utility supplied three phase system.

Joined: Jul 2001
Posts: 599
J
JBD Offline
Member
Many CNC machine vendors do not approve rotary phase convertors, however I have had some luck with them accepting electronic units from Phase Perfect.

Joined: Mar 2004
Posts: 251
W
Member
My next door neighbor (Shop) is an elevator co. Mostly home and small commercial units. Many come with 3 ph motors set up to work with 240v 1ph with a VFD.

Joined: Dec 2001
Posts: 2,498
T
Member
Interesting to note how setups vary - in Europe older elevators typically used 3ph motors with separate windings for softer braking (still not extremely comfortable of course).

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