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Gemstones, Minerals & Fossils
Lapidary
Actually Building the Machine!
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<blockquote data-quote="Nena" data-source="post: 313153" data-attributes="member: 7861"><p>Hi Magoo,</p><p></p><p>I use absolute magnetic encoders for positioning (extra) i already have encoders on my motors but for exact positioning i use those ring encoders. They are very high resolution. They are expensive but i can set every thing as absolute, even when i turn off the power and back on then the sensor still knows its position. If you use ppr encoders you need to home everytime your position and thats also a leak in the system. And its not graphical inaf. The ring has 1,048,576 positions. An accuracy of 0.1* but i have a accurate reposition whats more important for me. If you need to home your system everytime it also gives you a loss in accuracy. So every encoder/system has problems. What i want is that i can reposition the complete system exact even when i turn off the machine. I always know where i have set my encoders on.</p></blockquote><p></p>
[QUOTE="Nena, post: 313153, member: 7861"] Hi Magoo, I use absolute magnetic encoders for positioning (extra) i already have encoders on my motors but for exact positioning i use those ring encoders. They are very high resolution. They are expensive but i can set every thing as absolute, even when i turn off the power and back on then the sensor still knows its position. If you use ppr encoders you need to home everytime your position and thats also a leak in the system. And its not graphical inaf. The ring has 1,048,576 positions. An accuracy of 0.1* but i have a accurate reposition whats more important for me. If you need to home your system everytime it also gives you a loss in accuracy. So every encoder/system has problems. What i want is that i can reposition the complete system exact even when i turn off the machine. I always know where i have set my encoders on. [/QUOTE]
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Gemstones, Minerals & Fossils
Lapidary
Actually Building the Machine!
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