Getting started with 8i20
03 Sep 2014 20:04 #50684
by andypugh
Yes, it is possible (and in fact expected) to use the same encoder for position feedback and motor commutation. This is why the bldc component uses the "rawcounts" number, so that it is unaffected by homing, reset or index.
Joint following error might be because the motor has reached max speed. Is it running at the rated voltage?
Replied by andypugh on topic Getting started with 8i20
That sounds really good! just a quick question - should it be possible also when having a position feedback? I have it so far still in a testing phase, as a rotating axis with a position feedback. Like that when reaching ca 600rpm I would get a joint following error.
Yes, it is possible (and in fact expected) to use the same encoder for position feedback and motor commutation. This is why the bldc component uses the "rawcounts" number, so that it is unaffected by homing, reset or index.
Joint following error might be because the motor has reached max speed. Is it running at the rated voltage?
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04 Sep 2014 00:11 #50700
by jmizer
Replied by jmizer on topic Getting started with 8i20
Good hit again! I was testing it only with 12V (instead of 48), since the current did not go anywhere near the allowed maximum, I did not expect problem with the power in any way... wrong again. I tried now with 25V (i have 7i39 LV for this testing) and i spinned it easily some 1300rpm, I did not try more with the spindle just laying on the floor, anyway clearly that was it! Thank you!
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