What motor to use for lathe spindle?

[martyscncgarage]

Hi Marty
I'm in the little town of Carriere MS. About 45 min's NE of NewOrleans LA.

Marty if you are confident you can make all this work with Acorn I don't mind paying up front since you don't know me and I'm new in here.
You seem like a stand up guy that wouldn't BS a man for the $

If I were near by I would take you up on it. It sounds to me like you need someone to come by and help out. By posting your location, maybe an Acorn user near you can assist.

It would be difficult to try and do this over emails....

[Dave_C]

yes

Ok, you are off to a good start because the spindle and axis drives are all 3 phase 220/240 volt and it looks like they can all interface with Acorn.

However, I agree with Marty, this is not going to be easy to do with emails and forums as there is a fair degree of difficulty involved when it comes to wiring all the circuits.

It's not like wiring a light circuit in a home as the electronics are mostly NPN or PNP and only a few hard contact relays. So you'll get into terms line "Sinking" or "Sourcing" and that has to do with the type of open collectors you may have in the electronics. {One uses internally supplied power and the other may use an external power source} So be prepared to do some reading and don't make assumptions! Once you let the magic smoke out of the box, it can't be put back in.

Be prepared to go slow, ask lots of questions, take lots of pictures so we can see what you are seeing. Right now we have no idea what you machine, control cabinet and so forth look like.

It's a doable project and you have some very good components to work with. Hopefully the ball screws and the bed ways are in good shape.

Good luck,

Dave C.

[travasky]

Do you guys think we can get the Siemens axes motor drives

TRM,

From what I saw in the manual there is no reason they would not work! The Siemens axes motor drives takes step and direction and that is what Acorn wants.

Someone will have to help figure out if the step and direction is a 5vdc or 24vdc signal on the Siemens and explain how to wire each one. Siemens is known to be "good stuff" so if the servos and drives are operable, I'd at least try to use them and save the money for something else down the line.

I'll take a better look at the manual and see if I can figure out what voltage is needed for the step and direction signals.

Ok, I'm back. It looks like the drives take 24vdc input signals. (Page 16 shows how to wire them) But I also see on page 19 that the X5 is shown using resistors and says 5vdc. (Now we just past my ability to help so can someone explain why the two different descriptions?)

I see the drives all take 3 phase power, so do you have 3 phase power available?

Dave C.

The alarm relays are set up in the diagram for 24v signals. The inputs are specified as 5v differential. I believe that 5v is the standard for step and direction interfaces and the acorn probably outputs exactly that. We need Keith in here to confirm. Im an Oak and Allin1DC guy so the nitty gritty of step/dir. is something Id want the master to confirm.

To answer TRM's question about the 0-10v connection. Connections for the analog input should be made as follows (as per section 6.1 of the CTB manual)

Terminal T2
FI. 0-10v signal.
FC. Analog signal common.

Terminal T3
ST - Servo enable
I1 - Forward
I2 - Reverse

Its important to notice there are control parameters that need to be set. It shows the values in the column to the right in the manual. Section 6.1.2 also gives an overview of what the parameters do. I would imagine these are already set given this machine has been used previously but it wouldnt hurt to review them and confirm they're set up properly in the drive.

[martyscncgarage]

Logic signals depend on the axis drive. If they use 5VDC logic, it is recommended the user purchase a DB25 male breakout board and connect the drives there.
Amazon sells these pretty cheaply.
Marty

[TRM]

Ok guy let's eat elephant one bite at a time.

So the way I understand it the CTB drive is currently setup to get spindle speed, forward and reverse based on 0-10V. The polarity of the voltage determines forward or reverse and the amount of voltage is the speed command. It is wired ±10V analog voltage. We know it's current configuration parameters are A2.01=0 A2.02=0 A2.15=0 Based on page106 6.1.1 and the way it's wired to the 808D.

So I need to go into the configuration parameters and set them to A2.01=1 A2.02=1 A2.15=0 for 0~10V analog voltage for spindle speed, forward and reverse with terminals l1 and l2.
http://www.ctbservo.com/UpLoadFiles/Oth ... 091446.pdf

Am I correct? This should take of the speed,forward and reverse making this part Acorn friendly?
Please reference the page number in the manual. It will help me find what you are referring to a lot faster

Picked this up this afternoon, should come in handy.

[Dave_C]

Ok guy let's eat elephant one bite at a time.

Absolutely! Do one thing at a time, check it, make sure it does what you want and then move on to the next challenge.

When you get your Acorn board there is a wiring diagram called "Bench test" Wire up the board and do just that. Bench test it! This simple test will tell you the software is installed correctly, the ethernet is configured and the board is powered and works.

You're on your way,

Dave C.

[TRM]

Ok I hit a snag last night. First off all the key pads in the manual have 5 buttons and mine has 4.
On page 73 of the manual 3-27 "An" indicates invalid password. That's the only A group in the menu that I can find.
Here is a video of me going through the menu. Where do we go from here?

https://www.youtube.com/watch?v=2BMehjSCyIg

[martyscncgarage]

Ok I hit a snag last night. First off all the key pads in the manual have 5 buttons and mine has 4.
On page 73 of the manual 3-27 "An" indicates invalid password. That's the only A group in the menu that I can find.
Here is a video of me going through the menu. Where do we go from here?

https://www.youtube.com/watch?v=2BMehjSCyIg

Can you try and reach out to CTB to see if they can provide the correct manual for your drive?
If not or too much trouble, you might consider just buying a new GS3 Drive from Automationdirect.com
https://www.automationdirect.com/adc/sh ... )/gs3-23p0

Marty

[travasky]

Id email CTB with your model number and request the operation manual. The manual I linked before seems to only cover part numbers a little higher than yours. Could be a new revision. My mistake for not catching it sooner. I would assume much is similar but best to have the most correct manual.

[TRM]

Id email CTB with your model number and request the operation manual. The manual I linked before seems to only cover part numbers a little higher than yours. Could be a new revision. My mistake for not catching it sooner. I would assume much is similar but best to have the most correct manual.

I emailed them about 2 weeks ago as well. No reply yet. Phone #'s are dead ends.