Werner
Member
Hi there,
I have a machine with approx. 30 covers that can be removed without tools. So they have to be protected by sensors to stop the machine in e-stop.
My mechanical guy doesn't want mechanical door switches. He prefers contactless (magnetic) safety switches. So I found several, from Schmersal or Pilz etc.
The question is. If I have mechanical door switches I can put a multiple of switches in serie on one pilz safety relais. Can this also be done with the contactless (magnetic) safety switches? Is there a limit because they have a higher resistance? Or do I need a safety relais for every contactless (magnetic) safety sensor?
I have a machine with approx. 30 covers that can be removed without tools. So they have to be protected by sensors to stop the machine in e-stop.
My mechanical guy doesn't want mechanical door switches. He prefers contactless (magnetic) safety switches. So I found several, from Schmersal or Pilz etc.
The question is. If I have mechanical door switches I can put a multiple of switches in serie on one pilz safety relais. Can this also be done with the contactless (magnetic) safety switches? Is there a limit because they have a higher resistance? Or do I need a safety relais for every contactless (magnetic) safety sensor?