Siemens - Analog Safety Inputs

Does anyone know how to get ISO 13849 PLe safety from analog I/O with Siemens?

I am thinking of something akin to an AB CompactGuardLogix with a 1734-AENTR and 1734-IE4S.

Closest I could find is an S7-315F-2 and a SM336F, but this seems a big price increase on the S7-1200F range.

AustralIan said:

Does anyone know how to get ISO 13849 PLe safety from analog I/O with Siemens?

I am thinking of something akin to an AB CompactGuardLogix with a 1734-AENTR and 1734-IE4S.

Closest I could find is an S7-315F-2 and a SM336F, but this seems a big price increase on the S7-1200F range.

Click to expand...

I think there is also an S7-400 module, but I don't know of any newer failsafe analog modules. I do safety all the time, and I've never needed one.

If you're trying to save money on the PLC for a simple system, you could potentially use an IM in front of the SM336F to turn it into ET200M IO, and then have it be Profinet IO back to the 1200F. I haven't checked the ET200M pricing in a while, but I'd guess that it's a cheaper combo (tho it takes up more space).