Torchmate accumove 2 conversion

[Joey]

Which neutral are you referring too? I'm assuming your talking about the AC neutral? Do not attach the neutral to the ground and cabinet.

Only the Ground bus bar should be attached to the cabinet.

Progress on the Cabinet is looking good.

What steps per revolution are you going to set the drives too? Any idea what the turns per inch will be on the X and Y yet?

[Digger873]

Yes sir, I am talking about the AC neutral. Thankyou.
I am not sure about the steps per rev yet, I havent got that far yet.
I dont know what the lead is on my screws exactly, but I know its pretty high just by looking at them.

They are a multi start lead screw but I havent been able to find that info from torchmate. Those settings are not accessible to the end user, only torchmates tech support, so I will just have measure them myself.
If I had to guess I would say somewhere around 1 rev = 1".

[Digger873]

So I have completed the first bench test and am moving forward to wiring the drives. From what I have been able to find the db25 connection is 5v and the headers are 24v. My DM860T drives have the ability to use both 5v or 24v with a switch. It seems like it would be easier to use the headers with 24v than buy the db25 header. Is there something I'm missing or...?

over on the left side is a diagram for the voltage switch

I also read in the manual that centroid recommends 18 gauge wire for signals from controller and driver but 16 to 12 gauge for the wire from the drive to the motor. I am wondering why, as 18 gauge is actually oversize for 48v at 6 amps. It seems like way overkill. Am I missing something?
Thanks In advance

[ShawnM]

That is a 5V drive and needs to be wired to the DB25 when using the Acorn. Do not wire it to the headers. The switch on the drive is misleading because all it does is switch on an internal resistor circuit to drop the 24 volts you supply it back to 5v.

Step and direction signals can be 22 gauge wires, there's no need for 18 gauge for those signals.

As for the 4 conductor wire leaving the drive going to power the motor you'd have to size that to the length of wire you need for your machine. There's definitely no need ever for 12 gauge wire for a stepper motor. 16 is probably more than enough.

[Digger873]

good to know, thanks

So which wiring diagram would you use from the list of acorn wiring diagrams as there isnt one for the dm860t.

[ShawnM]

I'd follow S14976 and only hook up the step and direction lines first. The drive is probably enabled by default so you may not need the enable wires connected. When you power up the drives/motors with only the step and direction connected, if the motor locks then you don't need the enable lines.

Take your time and wire only ONE drive at a time to Acorn and get it moving. Then duplicate that same setup 2 more times.

I'd start with a pulse/rev setting on the drives of 1600 or 3200 and be sure to set Acorn the same.

Set switches 1,2 and 3 to match your motor current and set switch 4 to off.

This should get you moving.

[Digger873]

Thank you sir

[Digger873]

Next question,
The wiring diagram shows the 5v to the drivers coming from the acorn power supply. However it was said I shouldnt run any thing but the acorn off of that power supply. Do I have to get another 5v power supply for the pulse and step direction to the drivers.
Thanks

[Joey]

The Acorn Power supply is expected to supply the 5V for the drives.
No other Power supply is needed.

[Digger873]

Thanks Joey,
Next question, I have a non floating torch head with ohmic sensing and a breakaway. In looking at all the different diagrams it appears that the ohmic sensing should go through the relay board, and the break away can be on any of the 8 inputs. I intend to use home switches with software limits and most of the diagrams that show home switches show them on input 1. Can the home switches be on any input or do they need to be on 1.
I am using a prime weld cutter and the only diagram for it includes a float switch and no home/limit switches.
I just dont want to assume anything.
Thanks