I'm not asking because I have any issues, I'm just looking to understand, and optimize the installation.
I bought some inductive proximity sensors. I wired 3 PNP N/C in series with a 47ohm pullup resistor(A61 included that resistor). They seem to work fine off of the 5V on the BOB (C35).
A couple questions:
- The 47 ohm pullup resistor seems low, compared to all the other configurations I've read about in other threads? (10K, 22K, 47K, ...).
- Why so small, and are there any assumptions to be made about the accuracy/reliability of the circuit?
- What is the best "shape" for the... pin?... effector?, (what do you call it?) that the sensor "sees". (most accurate in our case)
- Does this inductive proximity sensor detect better: edges, points, areas? I see alot of people use round head bolts, nuts, pins, the mill itself, ...
Thanks,