GS3-FB and CTRIO

[DLTimmons]

Has any one out there connect a GS3-FB to a Ctrio. I could find nothing in the GS3 manual or the GS3-FB manual or the Ctrio manual on doing this just a RPM meter of unknown origin. I need to do this such a way as to not kill the other two input that I want to use as prox limits

[Greg]

Do you mean you want the pulse outputs of the CTRIO to drive the GS3-FB? Or do you mean you want the outputs of the GS3-FB to drive the inputs of the CTRIO? What is the purpose of doing this?

[DLTimmons]

No

I want the GS3-FB to output to the ctrio2 so I can follow the position of a unit. The drive is being controlled by analog signal.

[Greg]

Does this mean that you want to hook the AO, BO, & COM signals (open collector; max 24VDC 100mA) to the quadrature counting inputs of the CTRIO2?

[DLTimmons]

That it!

I tried a 10K pullup only get 2.9 volts

[Greg]

No pullup necessary.

Wire like this and it should work just fine:

GS3-FB --> CTRIO2
AO --> 1A
BO --> 1B
COM --> GND (-) of 24VDC
+24VDC --> 1M

[DLTimmons]

Then how do you wire prox's in to 1C 1D inputs for running to limits? We only keep PNP proxs on the shelf.

[Greg]

Since all the Channel 1 inputs have 1M in common on the CTRIO2, then obviously, you'd have to use NPN proximity sensors, or buy something like a Ramco RCM-3 converter (about $30) that converts a PNP signal to NPN 10-30 VDC output. They are DIN-rail mountable.