Adding encoders to steppers and selecting mesa cards

More
15 Sep 2017 09:12 #98987 by thuser
Hello

I want to upgrade my 3 axis cnc milling machine by adding 2000ppr incremental encoders with differential outputs to my stepper motors. I know this will not replace proper ac servos but my main reason for doing that is improving homing by using index of the encoders and monitoring if machine loses steps and maybe correcting that with pid.

I especially like capabilities of the 7i76e cards which gives cool features like analog spindle control, mpgs inputs and lots of gpio. For encoders interface i wanted to go with 7i85.

I wrote email to mesaus with inquiry about if the selected cards are compatible and received message saying that "The 7i85 card is a DB25 for use with a 5i25/6i25 or a 7i92", so i'am not sure if the expansion ports on 7i76e can be connected to 7i85.

Please Log in or Create an account to join the conversation.

More
15 Sep 2017 09:41 - 15 Sep 2017 10:36 #98988 by tecno
I use 7i85S and 7i76e, cable delivered by Mesa = 25DB to IDC

Mesa part # EPP-M-CABLE
Last edit: 15 Sep 2017 10:36 by tecno. Reason: added text

Please Log in or Create an account to join the conversation.

More
15 Sep 2017 21:38 #99012 by raglanlittlejohn
If you go to the Mesa site, and look up the 7i76e card, you can download the support software (under Specification).There is a config there for a 7i76e/7i85.

Please Log in or Create an account to join the conversation.

Moderators: PCWjmelson
Time to create page: 0.107 seconds
Powered by Kunena Forum