Omron Differential Encoder Overview & Wiring to Adafruit Connector

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There has been much discussion about encoders on the Centroid CNC discussion forums. centroidcncforum.com/viewforum...
There was discussion about the Omron E6B2-CWZ1X Incremental Iinedriver encoder from an Ebay vendor out of China. I ordered one to test. In this video, I unbox and wire it up to an Adafruit DB9 breakout board with hood to get it ready to connect to Centroid CNC's Acorn CNC motion controller

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29 окт 2017

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Комментарии : 28

@MrFernandoBedoya 5 лет назад

hey... thanks a millon for this video. Usually we don't have enough information about a product when watching them on eBay.

@martyscncgarage5275 5 лет назад

You're welcome....

@frijoli9579 6 лет назад

Thanks as always Marty!

@martyscncgarage5275 6 лет назад

You got it Frijoli! :-)

@airgunningyup 2 года назад

well thank god someone made this video , excellent,, some of the incremental units come with 5 wires, I assume those will not work

@MrPatdeeee 6 лет назад

What you gave was great. I also need to know how and where, the encoder fits in; in the whole scheme of thing. A real novice I am. So I hope you will make a video showing an installed and working encoder. Also please explain the "line" vs total PR. It get confused in 2,000 becoming 8,000. Finally what programming is necessary for the encoder to end up controlling the lathe's chuck RPM. Or controlling the spindle speed on a Mill if that is possible. Thanks

@martyscncgarage5275 6 лет назад

Pat, here is a good read on encoders and how the 2000 lines per revolution becomes 8000 COUNTS per revolution: www.dynapar.com/Technology/Encoder_Basics/Quadrature_Encoder/ As for this particular type of encoder as it applies to Centroid CNC's Acorn, it could be used belted to the spindle at 1:1 with a timing belt to provide a precise closed spindle loop. That is the controller knows exactly where the spindle is. Having an encoder on the spindle as described is a must to do rigid tapping on a mill, provide constant surface speed control, rigid tapping and threading on a lathe. You can Google those terms for more info. I hope this helps at least a little.

@FrancoCNC 6 лет назад

Thanks. Nice overview. I just ordered one for a 7" mini-lathe. I plan to run it off of a gear. There won't be much in the way of radial forces - hopefully it work work.

@martyscncgarage5275 6 лет назад

Remember, you need to go 1:1 with the spindle. I suggest using small timing belt and suspending the pulley on a little jackshaft between a pair of bearings and then use the little plastic coupler that comes with the Omron encoder....not sure how long it will last otherwise.....cheap though...

@David.Munson 6 лет назад

Franco do you sell the plastic gear?

@drnda2007 2 года назад

@@martyscncgarage5275 4 years ago .. but maybe someone else will read .. encoder shaft is supported with two ball bearings. Unless you tighten the belt to much I am sure it could be driven directly without coupler but sure it would last longer with coupler.

@JeffBlack1968 Год назад

Will this encoder work with a Centroid OAK Board? Is the wiring the same in OAK. Thanks, Jeff

@martyscncgarage5275 Год назад

Would not recommend it's use with Oak.

@JeffBlack1968 Год назад

@@martyscncgarage5275 Do you know of a encoder that will work with OAK?

@martyscncgarage5275 Год назад

5vdc line driver differential encoders from automationdirect.com or direct from Centroid. What is the application?

@JeffBlack1968 Год назад

@@martyscncgarage5275 I used an OAk Board on my Milltronics MB-19 Mill Conversion. I am trying to set up an encoder on the spindle.

@martyscncgarage5275 Год назад

@@JeffBlack1968 if the encoder will support a timing pulley and belt, you NEED at least a medium duty encoder. 1000 line is fine. Cheap encoders will not last.

@infinityinfinity9665 5 лет назад

Why are there 6 phases in omron CWZ1X but there are only 3 phases in all other omron models?

@martyscncgarage5275 5 лет назад

Z is the index pulse. You also have the inverse of the phase. This is a line driver encoder

@infinityinfinity9665 5 лет назад

@@martyscncgarage5275 So I need to connect all 6 phases in order for this encoder to work? Thanks.

@martyscncgarage5275 5 лет назад

@@infinityinfinity9665 I have no idea what you are working on or what control you are using

@infinityinfinity9665 5 лет назад

@@martyscncgarage5275 I'm just trying to connect this to an arduino in order to measure distances, the problem is I have only 3 pins left so I was wondering if I can only use 3 phases, from what I've read about differential line drivers "one of the signals matches the original signal, while the other is the exact opposite of the original signal" so if I connect only the 3 phases I should have the same output as in the 3 phase rotary encoders?

@martyscncgarage5275 5 лет назад

Nothing wrong with experimenting! Just use A and B you should be fine. The index pulse is a once per rev pulse. Good for threading on a lathe

@drnda2007 2 года назад

I don't think you can tell if this is original Omron or knock off just by testing, You'd need both and opened. I got similar one except it is 100p/r. Was working fine but during testing I've managed to reverse voltage polarity and then it exploded. I've opened it and 22uF capacitor exploded and about 5 small SMT transistors with only LY marking on them .. so impossible to tell what they are. According to manual, those encoders have reverse polarity and sc protection. This one obviously didn't have it. I could not find picture of original Omron encoder to compare. I've seen some that had two circular PCB inside, this one has only one. It has two small voltage regulators, quad comparator and each output have three SMD transistors. Ones that didn't blow are NPN and manual shows PNP but there are other two that I could not test as they blow up. I am sure I could fix it but cannot tell what transistors are.