jgs1960
Member
Master Control Relay can mean different things to different individuals. For the context of this discussion, I am speaking of a device that is in the logic rung of an E-stop switch and is a component that senses the opening (or closing) of the E-stop switch and subsequently opens the power to critical loads in a piece of machinery.
My question is, are their code requirements for a certain type of component to be used as an MCR? If so, what are they? If not, are there "commonly accepted" engineering standards as to what types of components may be used for this functionality?
Several vendors offer Master Control Relay components. What I would like to know is what, if anything, is unique about these parts as opposed to a "General Purpose" relay.
Thanks,
JS
My question is, are their code requirements for a certain type of component to be used as an MCR? If so, what are they? If not, are there "commonly accepted" engineering standards as to what types of components may be used for this functionality?
Several vendors offer Master Control Relay components. What I would like to know is what, if anything, is unique about these parts as opposed to a "General Purpose" relay.
Thanks,
JS