Re: E-Stop and Safety Relay Questions
Originally Posted by
wmgeorge
Never ever break the output legs of a VFD going to a 3 phase motor or you will fry the VFD/ Inverter. Best safety switch on a machine is the guy/gal running it.
It will if output power is present, I have actually done it with two contactors on the output for two motors that operated alternately, but used the At-Zero-Speed output to interlock the two contactors to ensure they did not switch when output was present.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.