SSI encoder testing

[Ben Willeford]

Hi,

I'm looking for more info on SSI encoders. Specifically, What is needed to generate a clock signal and get bit data from the encoder.

I have a SSI encoder, spec sheets and pinout. I have tried using a 5v clock signal from a freq generator, but this does not work. Do I HAVE to have a specific module/master to send a clock signal to the enocoder?

Thanks in advance,

Any help is appreciated.

 

[Ben Willeford]

Heres a link to the manufacturer, hopefully this helps.

http://trelectronic.com/product-category/absolute-rotary-encoders

The specific model is a CEV58M


Everything I have gathered seems to say I can simply apply control voltage (24v), Pulse a constant 5v 100khz +- square wave clock signal and see bit data transfer when shaft is moved on the data + pin.



Update,

I switched to using an Arduino board to supply a clean 5v, 100khz clock. When I power the encoder, my data line goes high (5v) as it should. But I cannot get any data to trigger when the encoder shaft is moved. It does trigger when I disconnect the encoder and the data goes low again, so I'm certain my scope is setup properly.

What am I missing here?

 

[waross]

CEV58M
Your search yielded no results
???????

Bill
--------------------
"Why not the best?"
Jimmy Carter

 

[Ben Willeford]

Thanks for trying- but I finally beat my head off of this enough that I figured out what I was doing wrong!

1.- Apparently my Freq generator is not accurate enough?

2.- My Arduino worked- ONCE I figured out that I had a clock of 100HZ... Not 100Khz! I managed to get about 70Khz using the arduino, which was good enough to read data signals.


I retested with my Freq Generator, and it would not work at those speeds.

Thanks!