Internet PLC Forum

General => Technical support => Topic started by: why on June 20, 2006, 01:31:56 AM

Title: help~~~
Post by: why on June 20, 2006, 01:31:56 AM

anyone have idea how to do braking system of single phase induction motor using PLC?

PLC is totally new to me.  :-\

anyone?  ??? ??? ???

Title: Re:help~~~
Post by: FQ-ONG on June 20, 2006, 02:00:09 AM

Does you mean to control the speed of motor?

Thank you

Title: Re:help~~~
Post by: why on June 20, 2006, 05:56:35 AM

yea.. u got an idea?

10-Q

Title: Re:help~~~
Post by: evanh on June 20, 2006, 03:33:58 PM

Single phase motors are best left alone.  Either add an external brake or replace the motor with a three phase one and use an inverter/vector drive to speed control it.

The PLC would be used to sequence both methods but is not the device that does the physical work - that would be either some contactors or the inverter.


Evan