Quadrature drive
- skysurfer
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30 Aug 2019 16:41 #143672
by skysurfer
Quadrature drive was created by skysurfer
Hello all,
I'm working away on my V2.1 machine and have some changes I'm looking at. V2 has been using Mode 1 (up,down) a throw back to the V1 Vexta step controllers I've since changed to Yaskawa Sigma V. With .0001" per step there has always been a limitation of ~60IPM (doing the math it approaches 10Khz), I'm looking at the quadrature drive (mode 2) since it's double width pulses I should in theory be able to run about 2x the speed I am currently, does that sound right? I haven't tried to set this up before so not sure of what there is going to be to editing HAL to do it. Previously I just did step config as per normal and made edits to make it run in mode 1 not sure if it's going to be that "easy" to change it to mode 2.
Austin
I'm working away on my V2.1 machine and have some changes I'm looking at. V2 has been using Mode 1 (up,down) a throw back to the V1 Vexta step controllers I've since changed to Yaskawa Sigma V. With .0001" per step there has always been a limitation of ~60IPM (doing the math it approaches 10Khz), I'm looking at the quadrature drive (mode 2) since it's double width pulses I should in theory be able to run about 2x the speed I am currently, does that sound right? I haven't tried to set this up before so not sure of what there is going to be to editing HAL to do it. Previously I just did step config as per normal and made edits to make it run in mode 1 not sure if it's going to be that "easy" to change it to mode 2.
Austin
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- PCW
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30 Aug 2019 16:52 - 30 Aug 2019 16:53 #143673
by PCW
Replied by PCW on topic Quadrature drive
Quadrature will give you the same maximum step rate as step/dir if you use the
double step (reset_ mode) with step/dir == 1 step per base thread invocation
If you use the standard step/dir mode you can only step at 1/2 the base thread rate
double step (reset_ mode) with step/dir == 1 step per base thread invocation
If you use the standard step/dir mode you can only step at 1/2 the base thread rate
Last edit: 30 Aug 2019 16:53 by PCW.
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