IPGregory - QueenAnt Pro V2 Build Thread

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IPGregory
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Re: IPGregory Build and Progress Thread

Post by IPGregory »

Yes sir, that green block in the middle of the board will be the home for all grounds and common connections. It will be connected directly to the incoming supply ground cable and is also connected to the backplate.
Thx
Ian

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IPGregory
Posts: 162
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Location: Nevada, USA

Re: IPGregory Build and Progress Thread

Post by IPGregory »

Probably a silly question but do I need a snubber for the coil on the relay? I have one of these to go across the coil on the contactor https://www.amazon.com/dp/B00DJS7332?ps ... ct_details.

The relay is just to supply the illumination on the Start/Stop switches. It's a 110v coil switching 110v.
Thx
Ian

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tblough
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Re: IPGregory Build and Progress Thread

Post by tblough »

Any coil or inductive device connected to relay contacts (either Acorn relays or external relays) must have a snubber to prevent arcing and destruction of the relay contacts. Snubbers should be placed as close to the inductive device as possible.
Cheers,

Tom
Confidence is the feeling you have before you fully understand the situation.
I have CDO. It's like OCD, but the letters are where they should be.
IPGregory
Posts: 162
Joined: Sat Oct 08, 2022 9:27 pm
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Location: Nevada, USA

Re: IPGregory Build and Progress Thread

Post by IPGregory »

Thanks, I'll add one to the relay as well then.
Thx
Ian

QueenAnt Pro V2 - CNC Router - https://photos.app.goo.gl/kg7CSvJsrAvAgRs26
MPNC - CNC Router - https://photos.app.goo.gl/ees2SER6C2Aw8AJ89.
IPGregory
Posts: 162
Joined: Sat Oct 08, 2022 9:27 pm
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CNC Control System Serial Number: 20D7787C45AB-0819226470 - 98F07B6F97F8-0623237343
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Location: Nevada, USA

Re: IPGregory Build and Progress Thread

Post by IPGregory »

Weekend update.

Finished squaring the bed. Corner to corner in both directions is identical to a fraction of a mm. As accurate as I can get it with a tape measure and my eyes anyway.
Image

Making up some DIY Leveling Feet.
Image

Installing the X Axis Gantry.
Image

Starting the Z Axis Assembly.
Image

Raiding PC parts to mount the Acorn to the Control Board.
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Some more progress on the Control Board finishes out Saturday.
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Z Axis Assembly complete and ready to install
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Feet installed.
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Z Axis Assembly installed and the Spindle Test Mounted.
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Confirmed the Spindle Connector Ground is connected inside the Spindle and confirmed continuity from the case/collet to the pin.
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Same can't be said for the cable shield at the Spindle Plug. Need to fix that.
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Main Mechanical Assembly is pretty much complete, yay!
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Waiting on some 18/4 cable for my motor power cables and the DC switch runs between the board and the switch box. Grabbed some Cat 6 to do a quick power test and make sure it's working so far. The right lights light up so looks good so far, also yay!
Image

Gotta wait for some parts now (mainly cable) so progress will slow a bit.

Thats it for this weekend.
Thx
Ian

QueenAnt Pro V2 - CNC Router - https://photos.app.goo.gl/kg7CSvJsrAvAgRs26
MPNC - CNC Router - https://photos.app.goo.gl/ees2SER6C2Aw8AJ89.
IPGregory
Posts: 162
Joined: Sat Oct 08, 2022 9:27 pm
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CNC Control System Serial Number: 20D7787C45AB-0819226470 - 98F07B6F97F8-0623237343
DC3IOB: No
CNC12: Yes
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CPU10 or CPU7: No
Location: Nevada, USA

Re: IPGregory Build and Progress Thread

Post by IPGregory »

Quick question on the drive connections at the Acorn. I have Chinese copy Leadshine closed loop hybrid drives labeled HBS57H. I was referencing drawing S15032 (ACORN_rev4, MULTIPLE LEADSHINE CS-D508 STEPPER DRIVES) to wire them up. The drives can take up to 24v on the signal block, so I was wiring them up using 24v as I have a separate 24v PSU I am using for Signal and I/O. The drawing shows 5v for signal connection and uses the DB25 Breakout. I have a DB25 breakout board and was going to wire them through that as shown in the drawing, not through the Acorn Board H2 and H3 Blocks. I am not currently using 5v for anything. I was reading something else today and came across a reference that the DB25 only accepts 5v whereas the H2/H3 blocks can accept up to 24v

So 2 questions. 1, can I use the DB25 breakout board with 24v signal inputs? 2, If I can't, is there any issue/loss of functionality with using the H2/H3 blocks directly on the Acorn board instead at 24v?

I can wire them either way easily at this point and I would rather not add 5v to the panel if there is no need/benefit otherwise.

Edit - I think I've answered my own questions. Because I want to use 24v and my drives have both an enable and an alarm option, it's better for me to use the H2/H3 blocks. The wiring will also be cleaner as I don't have to split off the enable wiring and the alarm wiring point is closer. I haven't come across any downsides to doing so so far.
Thx
Ian

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ShawnM
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Re: IPGregory Build and Progress Thread

Post by ShawnM »

I’d wire those drives to the DB25 per the diagram you are using. Those drives are designed for 5v TTL step and direction signals regardless of the info in the manual. The DB25 is for steppers and the headers are open collector for servo drives. This is detailed in the manual and all over this forum. Again, for the most reliable results wire them to the DB25 per the diagram you are following.

Side note, the drives may be enabled by default and the enable lines won’t be needed. Try it without the enable connected first. Also don’t wire up the alarm output until you get the drive moving.

Lastly, wire ONE drive at a time and get it moving and then duplicate those same connections and settings over and over.
IPGregory
Posts: 162
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Location: Nevada, USA

Re: IPGregory Build and Progress Thread

Post by IPGregory »

Yeah, thx Shawn. When I first got the Acorn, I read through the manual and the "use the DB25 instead of the Acorn Screw Blocks if you can" stuck in my head. So, I ordered a DB25 board. Unfortunately, this was before I started really planning my wiring and the "DB25 runs on 5v" part didn't. So as of Monday night, I got here (Yellow is 24v)....
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I was reading the spec sheet for something yesterday and the DB25 uses 5v jumped out at me. I went back and looked it up and everywhere references 5v. So I posted up the questions above. I hadn't planned to use 5v in the system as everything showed the capability to run off 24v (except the DB25 apparently). I went back and re-read the manual and it says the DB25 is recommended but the Acorn Blocks can also provide step and direction if needed. There didn't seem to be a real 'do not use the Acorn blocks' anywhere so I decided to bypass the DB25 as the wiring would be cleaner and I wouldn't need to add 5v to the panel. So last night I got to here..
Image

Thats where it's at as of now. This morning I saw your response and it's pretty clear that I should really use the DB25. The wiring change is no big deal. I will just shorten what's there. I can keep the Enable and Alarm functions as the wires are long enough. I will add a 5v PSU and switch out the 24v to the drives. I'm just glad we caught this now.

My plan is to wire this up and then use it for the full bench test and pre-setup prior to mounting it and the electronics to the machine. I've already done the initial board and software install test and also the spindle voltage test. I did a basic wiring test to check a drive lit up but didn't go beyond that yet.
Image

I am intending to unplug everything except one drive without enable and alarm and go from there once I have the panel to the stage I can do that. Then as you advise I plan to add in the rest of the drives and the remaining functions, prox sensors, switch to a full software license, etc. as I go. I wanted to use the panel to do this because I can have the main power side and the e-stop setup all done and stable so I can use that to run the rest and check all the functions at the same time.

Anyway, long way to say I will add a 5v source, use the DB25 and eventually finish bench testing everything properly as you recommend... :)

Thanks again for the help Shawn!
Thx
Ian

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ShawnM
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Re: IPGregory Build and Progress Thread

Post by ShawnM »

Wiring looks great, a neat and organized panel is a must in my opinion.

It's just a well known fact that stepper drives work best off the DB25 and servos work on the Acorn headers. It's in all the Acorn documentation. This statement has been regurgitated over and over more times than I care to count on this forum. There are some new, hybrid steppers that can work on the headers but there are only a few of them. Will yours work on the headers, I dont know for sure without testing it. Will they work on the DB25, yes. As we all know the documentation that comes with the Chinese knock off drives is "sketchy" at best so follow it at your own risk.

So many people come on here and ask about where to wire "steppers" then decide to do it their own way. They dont want to add the DB25 so they wire the steppers to the headers only to find that they are missing steps. Your drive may "appear" to work just fine on the headers but you can easily be missing steps and you wont know it until it's too late.

The Acorn power supply has 5v outputs just so you know.
IPGregory
Posts: 162
Joined: Sat Oct 08, 2022 9:27 pm
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CNC Control System Serial Number: 20D7787C45AB-0819226470 - 98F07B6F97F8-0623237343
DC3IOB: No
CNC12: Yes
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Location: Nevada, USA

Re: IPGregory Build and Progress Thread

Post by IPGregory »

I was planning to use the DB25 but mentally blind spotted the 5v part until yesterday, that's what threw me off last night. But that's why I have this thread right, so the experience of the forum can help me avoid too many mistakes hopefully? :)

I know the Acorn supply has a low 5v output but that PSU is wired before the contactor so the Acorn stays up after an E-Stop. I am only running the Acorn main 24v power input of it and would prefer to keep it that way. A 5v Rail mounted PSU is only $20 so no big deal.

Thanks again Shawn.
Thx
Ian

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