[What 1756 Input module will work with a 845D Gray Code Encoder]

Hi Chantecler!

you are definately not intruding!  I appreciate your comment.   BTW I am a big fan of U of M !  I grew up in Michigan not far from there  :)

Yes, terminal 34 will be connected to encoder pin T and the negative of the 24vdc power supply.

Dan

[What 1756 Input module will work with a 845D Gray Code Encoder]

I have attached the copy from the Rockwell manual of the 1756-IB16IF module, I also attached a copy of the way I wired it to the 845D Gray code Encoder (NPN Open Collector).

Ken, see if you think I goofed up.

Thanks!

Dan

[What 1756 Input module will work with a 845D Gray Code Encoder]

Thanks Ken.

inwill post a drawing of how I think it’s sposed to wire to the 1756-IB16IF tomorrow.

let me know if you think there is something wrong with my thought process.

THANKS!

Dan

[What 1756 Input module will work with a 845D Gray Code Encoder]

Here’s a photo of the inside of the encoder

[What 1756 Input module will work with a 845D Gray Code Encoder]

I believe I toasted it when I accidentally swapped polarity of the 24vdc to the encoder.

(I fried the encoder, not the module)

i am still apprehensive that possibly something else damaged the encoder?

[What 1756 Input module will work with a 845D Gray Code Encoder]

Hello, 

I am migrating a PLC-5 to Control Logix.   Due to location etc, we need to keep the existing 845D-SHHZ25AGCW4 Encoders.  (256 counts, single turn 24vdc NPN open Collector.)

I tried to use a 1756-Ib16IF, but I toasted my spare encoder.  (Have to get another one).

My question is has anyone ever done this since the 1771-DL is not made in CLX form factor.   Also, what Module did you use if you did try this and if you have a wiring diagram, 

would be great!  (I cannot afford another fried encoder)

Thanks!

Dan