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Post by moodytx on Dec 28, 2018 19:58:05 GMT -5
I have had my AR8 Pro for almost 3 years now and have had this continued aggravation of a $10,000 paper weight.
Yesterday I fired up the machine and hit home. X and Z moved but Y was silent. I went through every step that Axiom and I have discussed in the past and I finally got it start working .
I turned it off, happy that it was working and went inside.
I came out this morning and turned on the machine and hit home .. It was working fine.
I left the machine on all day and periodically I would move the X, Y and Z axis around the table and then press home to return ..
Suddenly .. the Y axis silent .. (AGAIN...)
The controller shows it to be moving .. but there is no physical movement or sound.
I have been through every connection several times and can not keep the machine reliably running. I have even had the Y axis fail during a job process.
I am looking for ANY solutions .. any help
Bob
(Yes .. I have other posts regarding this same issue .. )
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Post by gerry on Dec 28, 2018 20:34:18 GMT -5
Check the wiring. Especially check the ground connections. Most likely problem. That, or a broken wire.
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Post by stevem on Dec 28, 2018 20:34:21 GMT -5
When you home the machine, is the ball screw under the table moving? If so, is it possible the 2 set screws that connect the rod to the stepper motor may not be tight?
It seems strange that you are seeing the Y moving on the pendant and the carriage not moving.
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Post by moodytx on Dec 28, 2018 21:09:41 GMT -5
Check the wiring. Especially check the ground connections. Most likely problem. That, or a broken wire. Gerry, I am working on that now .. (again... ) I am actually swapping the driver cards around and I am finding that the issue seems to follow the Y-Axis card (the middle one) I'll update as I know more .. Stevem As I mentioned there is no physical movement or sound .. ====== swapping the output wiring on the X and Y controller/driver cards (The TROY cards) makes the issue follow .. The Y axis is now moving (from input to the X axis) and the X-Axis (with input from the Y is dead .. |
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Post by moodytx on Dec 28, 2018 21:51:56 GMT -5
 If I swapped the X and Y connectors on the Richland Auto controller box the "Y" button moved the "X" axis but the actual "Y" axis would not move with the "X" button .. Ok .. that eliminated the INPUT side of the driver board .. However... if I swapped the output connector from the X-Driver with the output of the Y-Driver (the bundle of pink wires going to the big cable that plugs in at the back of the machine) then the Y axis now moves and the X axis was silent .. Seems to isolate the issue to the "Y" driver (Troy 102TR22G-D board) ... I pulled the board to inspect it closer and I noticed the thyristor (CR02A-8 ... multi use .. but one use is as a solid state relay .. ) was bent and twisted .. It looks like the legs might be touching (Cathod and Anode).. if not they could have been close enough that temperature changes made them make and break .. (WAG ... Wild A$$ Guess) I straightened up device and reconnected everything .. and lo and behold .. All 3 axis' are working now .. (as of this writing ... ) I will leave it running and move all three axis' around and home them ... If its still working tomorrow .. I will try a simple cutting job .. Not saying this is it .. or that its fixed .. but it is working (there is a BIG difference in FIXED and WORKING...) .. But since every problem I have had with this machine centers on the "Y" axis .. I am very cautious about finding things like this on this board .. Maybe since i have had this documented for so long .. Axiom MIGHT consider replacing the Troy driver board ?? More info as things develop .. Bob |
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johnb
Full Member
New owner @ March 2019, AR16 Elite, Aspire, 4th Axis & Laser
Posts: 326
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Post by johnb on Dec 30, 2018 12:49:33 GMT -5
Ugh...the joys of a hand soldered board. I'm thinking that (once I actually receive my machine next month), I'll go over the boards with a magnifying glass looking for just this kind of thing...
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Post by moodytx on Jan 6, 2019 19:23:26 GMT -5
Ugh...the joys of a hand soldered board. I'm thinking that (once I actually receive my machine next month), I'll go over the boards with a magnifying glass looking for just this kind of thing... I have been fighting this issue since day one .. the caveat is that it seemed to be temperature sensitive .. I don't have an environmentally controlled shop .. However (fingers crossed) it seems to be holding up .. I have not had any axis issues since locating and correcting this problem .. Bob |
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