7i77D single ended encoder connections

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15 Sep 2022 05:30 #251976 by msrdiesel
Can someone tell me if a single ended spindle encoder on a 7i77d connects A - N/C - Ground - B - N/C - 5V - Index - N/C  also W22, W20 and W18 jumpers left position. If not then how?

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15 Sep 2022 05:59 - 15 Sep 2022 21:39 #251977 by JPL
Firstly, W22 W20 and W18 are for encoder #3. I would suggest to use encoder #5 (W9, W7, W3) instead since the servo enable output ENA5 is independent, while the others are all switched in common. (see manual p.14)

Then yes, the 3 corresponding jumpers should be set on the left side for single ended encoders. You will then connect the encoder same as you you wrote. This is A out to QAn (Again QA5 suggested for spindle encoder), encoder B out goes to QBn on the 7i77, index goes to IDXn. Except that /QAn,  /QBn and /IDXn on the 7i77 are left unconnected. are connected to gnd.  You will also connect the +5v and GND from the 7i77 to their respective encoders (ONLY for encoder power)
Last edit: 15 Sep 2022 21:39 by JPL. Reason: Corrected according to tommylight info below (Note to myself: You shall not answer discussion during the middle of the night)
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15 Sep 2022 10:41 #251985 by tommylight
A+/gnd
B+/gnd
I+/gnd

Nothing to 5 V, except encoder power.
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16 Sep 2022 02:19 #252059 by msrdiesel
I got it sorted out, thanks for the help. They really should put page 14 at the beginning of the connections, not after, I never read more than I need to!
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