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Bob A.

SensaGuard Safety Switch

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Hi Guys, Been looking at the 1734-IB8S wiring and now there is a SensaGuard safety switch to connect to it. The installation instructions show the A & A+ connections as well as B and B+. But none of the suggested wiring diagrams even mention the PointGuard module. The PointGuard Input has a Test Output to source the voltage for Dry Contacts that includes a Test signal and I've not found any instructions about how this all gets wired up. Anyone been down this road? Thanks, Bob A.

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check page 55 http://literature.rockwellautomation.com/idc/groups/literature/documents/um/1734-um013_-en-p.pdf

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I've obviously seen the GuardLogix Input Wiring Scheme....So how does it's test inputs work with a SensaGuard Safety switch that has a solid state output ? Bob A

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what is the model of your switch? what safety category you need to accomplish? everything you may need is in the docs. http://literature.ro...um013_-en-p.pdf test pulses are shown on page 21. wiring is shown on page 55. in general (any switch) you can choose to use +24V instead of test pulse outputs (or use just T0) if you are ok with Cat3. if you want Cat4, then you need to use both T0 and T1 or use devices with self-monitoring (light curtain). switch wiring is shown in its own documentation. for example: http://www.ab.com/en...g-Diagrams.html or http://literature.ro...p001_-en-p.pdf. your particular switch has OSSDs so it is wired like a light curtain. look at the last circuit. it shows that red and yellow wires (this is your A+ and B+) are connected to outputs of previous device or to +24V. pink and gray are your A and B and connect to inputs of the safety controller (I0, I1). you still need to connect brown and blue to power ( +/- of the 24V) and commons need to be shared. If the switch has no self-monitoring, for Cat4 (SIL3) you would need to connect A+ and B+ to test pulses T0 and T1.

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