Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.

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9 years 2 months ago #96820 by andypugh
Yesterday shows a spindle speed command of 101 and a spinout of 101. And a matching voltage.
Today shows a spindle speed command of 1400 but does not show the spinout number. We need to know if that is 101 or 1400 to know where the problem lies.
It could well be due to the minlim and maxlim parameters. Which is why I asked about them.

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9 years 2 months ago #96821 by andypugh

tecno wrote: No 5i25 !! 7i76E


I am trying to help other people too. I lose track of who has what hardware. Sorry.

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9 years 2 months ago #96822 by tecno
It could well be due to the minlim and maxlim parameters

Where are these parameters?

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9 years 2 months ago #96823 by andypugh
Look in the "parameters" section of "Show HAL config"

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9 years 2 months ago #96824 by tecno
spinout minlim 0
spinout maxlim 100
spinout scale 2000

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9 years 2 months ago #96825 by andypugh
Well, there you are then! That is why you only get 100 rpm output.

You need a
Code:
setp ....spinout-maxlim 2000
in the HAL file in the same place as where you set the scale.

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9 years 2 months ago #96827 by tecno
Thank you very much Andy one very happy camper here now.

Your help is very much appreciated.

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9 years 2 months ago #96829 by tecno
I have now made course adjustment of scale to 1200 so true rpm is very close.

Giving M3 S50 gives 46rpm.
Question, spindle encoder is showing approx 3000/3200 for velocity, where do I scale this?

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9 years 2 months ago #96831 by andypugh
There should be an encoder scale parameter (look in HAL config for the exact name) and you can "setp" this to the correct counts-per-rev.
If you are planning to use the spindle for tapping etc then the scale needs to give 1 revolution output per actual revolution. However if you only want it to monitor spindle speed then you can multiply the scale by 60 to get an revs-per-minute rather than rev-per-second output in the velocity.
If you do want to use spindle-synched motion then the factor of 60 needs to be in a HAL "scale" component.

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9 years 2 months ago #96835 by tecno
Will put encoder aside a while as I just realized that Z puls is not working.

Back to the spindle as there are problems still or should I say need of improvements.

I have a 2-speed 3-phase motor with 1400/2850 rpm = Output 10 controls this.

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As a first step I need to have monitoring of true rpm and make a switch to high rpm at say 800rpm.
How can this be done?

When I get the milling machine going I will make further improvement on controlling gearbox as I can not get good enough torque just by letting VFD go to lower revs so the gearbox is very well needed working with large milling cutters.

Looks like this

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So I need to make a *reader* for the gearshift A-B-C-D-E as well as the Hi/Lo lever on the side.
All to be set manually but halting spindle for gear change to appropriate rpm.

setp hm2_7i76e.0.7i76.0.0.spinout-scalemax 1200
setp hm2_7i76e.0.7i76.0.0.spinout-maxlim 2500

Above is obviously not correct as I can not get more than 1200rpm

Encoder is a must to monitor velocity but how to implement this so the speed shift can be accomplished?

This setup was working in my previous life with other system.

Any help to get me in the right direction is most welcome.

Cheers
Bengt

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