Pilz Relays

[bridgey89]

i am an apprentice in a factory doing electrical engineering. i would like to know how pilz safety relays work, and how they are wired into an electrical circuit. any info would be appreciated.

 

[Tester Steve]

You can get all you need here.

Steve.

 

[pmac10]

of the top of my head, terminals S11/S12 have to be made, ie take your wire from S11 and run through however many normally closed E-stops as you like and return to S12, the same can be applied to S23/24(or whatever they're labled), and take these through machine guards for example, S13/14 through light curtains. S33/34 will normally be used for reset relay. 13/14 will be normally open relay contacts, wire your control circuit through these immediately after your fuse,now if any e-stop, machine guard,or light curtain is operated, the safety relay de-energises, contacts 13/14 open and the machine becomes inoperable as the control circuit has dropped out, i didnt read Tester Steve's link but some of these sites assume prior knowledge and as you mentioned your an apprentice i thought i'd try to explain it for you, hope this helps