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Milltronics Partner 1E Allin1DC conversion
Posted: Sun Apr 16, 2023 8:40 pm
by dlenardu
Re: Milltronics Partner 1E Allin1DC conversion
Posted: Sun Apr 16, 2023 8:56 pm
by dlenardu
One issue that I am having is when I hit the Estop the Z head drops about 0.070" before the brake engages. Any idea how to fix this?
Also when I did the backlash test, I set the indicator to Zero and commanded a -0.025 distance in each axis and then commanded it back to zero. When I commanded the -0.025 for both the X and the Y it would only travel -0.024 in X and -0.0235 in Y according to the indicator. When the command was to go back to zero it would go straight to zero every time.
Re: Milltronics Partner 1E Allin1DC conversion
Posted: Sun Apr 16, 2023 10:02 pm
by converterking
What toolchanger does your machine have?
Re: Milltronics Partner 1E Allin1DC conversion
Posted: Mon Apr 17, 2023 4:40 am
by dlenardu
converterking wrote: ↑Sun Apr 16, 2023 10:02 pm
What toolchanger does your machine have?
I do not have a tool changer on my machine. I wish I did, may have to build one someday if I can't find a good deal on a used one
Re: Milltronics Partner 1E Allin1DC conversion
Posted: Mon Apr 17, 2023 5:14 pm
by S-K Machine
You could have left the factory rectifier circuit alone. My machine has the same 140 volt motors and the circuit puts out about 165 if I remember.
The allin1 will regulate it down. They never see much more than 100v even during rapid moves from what I remember when I checked it.
Remember, as amps go up voltage goes down.
As far as the backlash, go into the settings and add some backlash comp. I have mine cranked up pretty good. I looked all over the machine and could not find where it was missing from. First maybe thrust bearings then maybe loose pulleys .I just live with it. Does not seem to matter much.
20-25 year old machines are not spring chickens anymore and who knows how hard of lives they have had.
Re: Milltronics Partner 1E Allin1DC conversion
Posted: Tue Apr 18, 2023 12:09 pm
by converterking
Milltronics used abec 3 angular bearings on the ballscrews. I always replaced them with abec 7 bearings which are about .100 thicker.
Where do you have the z axis brake connected? If I remember right Milltronics had it connected to the estop relay.
Re: Milltronics Partner 1E Allin1DC conversion
Posted: Tue Apr 18, 2023 6:12 pm
by S-K Machine
Converterking, that how mine is connected to the contactor which is wired to the estop relay.
I saw no reason to change it even though the allin1 will do it using the output #9 I believe. Just more wiring to move around for no gain.
The head should have a counterweight on it anyway. The brake just holds it from creeping down on it's own.
Re: Milltronics Partner 1E Allin1DC conversion
Posted: Tue Apr 18, 2023 7:06 pm
by dlenardu
@Converterking I have the Z brake wired to output 9 on the ALLin1DC.
@S-K Machine. The machine does not have a counterweight on it. Also, I was going to reuse the the factory setup for the DC servos but I was worried since Centroid says that you have to run the correct voltage to the motors and I didn't see anything about it limiting the voltage to the motors
Re: Milltronics Partner 1E Allin1DC conversion
Posted: Wed Apr 19, 2023 9:25 am
by centroid467
The ALLIN1DC does not limit the maximum voltage applied to the motors. It does vary the voltage with speed but that should not be relied on to stay within motor ratings. Best practice is to ensure supply voltage is equal to or less than motor's rated max voltage.
Re: Milltronics Partner 1E Allin1DC conversion
Posted: Thu Apr 20, 2023 10:04 am
by dlenardu
Added a little extra color to the front of the operator panel
![20230416_140629.jpg (3.46 MiB) Viewed 1175 times Front panel](./download/file.php?id=24134&t=1&sid=4859bf84bd1da41a04ed716b47f4c3d5)
- Front panel
Still not sure what to do on my Z-brake issue