New Saturn 2 4 x 4 CNCRP Nema 34 build

[micknm]

We took delivery last week on a Saturn 2 with CNCRP Nema 34 Plug & Play. I'm hoping I can get a couple of questions answered here on the forum.

1. What is the procedure for mechanically squaring the gantry to the frame? The gantry is out of square about 5/16" from side to side. With the Y side just touching the bumper, the slave side is about 5/16" off. On other R&P dual drive machines I've worked on, you loosen the gantry interface plate bolts on both sides and run the homing function so that the two side square themselves, then "snug" one side, jog the gantry around and re-home before tightening the both sides. Should I perform the same procedure with the Saturn?

2. We had to modify the A axis e-chain track in order for the cables to be long enough to reach the P&P boxes. Is there any reason we're not thinking of that the track has to extend all the way to the front of the frame?



Thanks in advance,

Mick

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[FineLineAuto]

We took delivery last week on a Saturn 2 with CNCRP Nema 34 Plug & Play. I'm hoping I can get a couple of questions answered here on the forum.

1. What is the procedure for mechanically squaring the gantry to the frame? The gantry is out of square about 5/16" from side to side. With the Y side just touching the bumper, the slave side is about 5/16" off. On other R&P dual drive machines I've worked on, you loosen the gantry interface plate bolts on both sides and run the homing function so that the two side square themselves, then "snug" one side, jog the gantry around and re-home before tightening the both sides. Should I perform the same procedure with the Saturn?

2. We had to modify the A axis e-chain track in order for the cables to be long enough to reach the P&P boxes. Is there any reason we're not thinking of that the track has to extend all the way to the front of the frame?



Thanks in advance,

Mick

Mick, if it’s out that much I would just loosen up the 10 bolts on each of the gantry sides, re-adjust, and then re-tighten. You will need a 6mm hex key to do it.

I see no reason you need to keep the tray extended to the edge of the frame with the configuration of the electronics you have.

[micknm]

So today we got the drive belts, pulleys and mounting hardware that were not shipped with the machine installed and ready for the first motion tests.

Z axis - no issues, very smooth motion. Proximity switch working fine.

X axis - very smooth, but reversed from the keyboard control arrows (Mach3, XML file from Nate). Right goes left, left goes right. Proximity sensor working fine.

Y axis - side to side rotation direction is reversed. Y side moving - and slave moving +.

Any help on Mach3 settings or otherwise on what to check?

Thanks
Mick

[ger21]

There's a "Reverse" checkbox in Config > Homing/Limits that will change the direction.

[micknm]

Thanks very much! I'll look for it in the am.

[micknm]

There's a "Reverse" checkbox in Config > Homing/Limits that will change the direction.

Well, the homing/limits reverse worked for the X axis, but the Y axis is still reversed. Both Y axis motors are moving opposite of the keyboard direction.

[difalkner]

Did you swap both Y's, Mick? Seems like if you swap both they'll be running opposite of the way they are now and thus lined up with the keyboard.

David

[micknm]

Yes I did. It did reverse both motors, but then I could not home it. The fix was to go into Mach3/Config/Ports & Pins and change the settings for Y and A to checked Dir Low/Active. Got it homing fine now. Nice to see it moving like it is supposed to!

[FineLineAuto]

Yes I did. It did reverse both motors, but then I could not home it. The fix was to go into Mach3/Config/Ports & Pins and change the settings for Y and A to checked Dir Low/Active. Got it homing fine now. Nice to see it moving like it is supposed to!

Glad you got it going. I sent you a new post processor for your other issue.

[ger21]

The fix was to go into Mach3/Config/Ports & Pins and change the settings for Y and A to checked Dir Low/Active.

That does the exact same thing as "Reverse".
All you probably needed to do was toggle the Home Negative setting.

[micknm]

I'm not sure why, but when I only did the reverse home settings, it would not home in Y. Z and X were fine. Prox switches fired but it wasn't registering home. I unchecked those settings and checked the Dir Low settings and it homed right away.

i clearly have a learning curve for Mach3 ahead. I'll have couple of weeks to myself starting next week, so that will give me a chance to dive in and get more comfortable with it. I appreciate the feedback. I'm looking forward trying the Mach3 2010 screenset, but I'm holding off to make sure everything is tweaked first.

[micknm]

After thinking we finally had Mach3 set up properly for our configuration we discovered that the Y++ limit was not triggering the Estop. The switch itself worked fine, but it wasn't firing.
I figured out what was wrong and made the correction, but now the machine won't home in Y. It reaches the limit switch and tries to continue forward on the Y side motor.

Here are our config files:






Pulling what's left of my hair out.

Thanks in advance!

[ger21]

Do the DRO's count up, or down while it's homing?

[micknm]

Down