Isel CPM 3020 - run with mach3?

[JAZZCNC]

Anyone got any recommendations as to a good breakout board - links if possible. There are so many suppliers. I appreciate and will purchase based on the advice.

Chris,

Don't go out buying anything yet because you haven't clue whats inside or needed. Get it first and lets see what's inside.!!

[craynerd]

Evening guys
well the machine arrived today. It does power up in as much as the door light comes on (but the door wouldn't open, I had to unscrew the handle to open it) and you can turn the motor on, you can see the motor relay engage but the motor doesn't kick in but I guess this is controlled from the software.

Anyway, the huge important bit which I'm dying to get your advice on, the electronics.

to my dissapointment, it's an all in one board and all the axis plug into it. The picture is very big, sorry, I will resize asap but I'm on my iPad and it's late



Same image here as it seems to be flipping it upside down on the forum: http://raynerd.co.uk/wp-content/upLoads/image.jpeg

i guess the electronics and large transformed on the right is for the motor or is that simply the PSU for the entire machine.

Does it looks like I've any chance of running with mach3 or do I need to strip the board and start fresh with new drivers. I'd be confident in retrofitting 3 fresh drivers and to be honest, I'd probably have to manually turn on and off the spindle motor via a switch to start with. Consequently, I'd pretty much rip out all the electronics. If I was to do this, is it entirely certain the motors would be ok or would these need swapping, in which case the project has just got massive as it would require a full strip down of the entire machine and not just the electronics panel.

Ill stop woffling. I really look forward to your replies guys.

Thanks

[komatias]

Cant see anything that would stop you converting the boards to the typical motion controller+ Breakout board + motor drivers. But we will still need to see the motors, hopefully they are compatible with the standard types of stepper motors ( good reading on here: https://learn.adafruit.com/downloads...per-motors.pdf)

I would keep the powersupply and reuse the safety equipment then stick a motion control board and either a leadshine MX4660 or a gecko G540.

[craynerd]

Thanks for the reply.

Can you confirm that you are talking about removing the board totally? There is actually plenty of space for mounting the stepper motors to the top of the case, would you just leave the board in situ and unplug the steppers (they are standard screw connectors anyway) and plug them into the new drivers or would you clean it out.

I did similar with my TEP machine some years ago but admit, I`d like to utilise the power supply in this machine. However, although I`m confident enough to attempt this adaption of the machine, I`m not sure I`m confident enough to remove the motherboard/drivers and keep the PSU intact. What's more is I don`t actually know if the board is part of the PSU. I know I could certainly tap into power points on the board and use them. (all this said it would look a cleaner job if the board was removed).

I know I need to get at the motors so I guess my next job is to open the machine more so I can see a motor. It`s a real shame as uncovering/exposing the motors looks a challenge!

You have mentioned two new stepper drivers - I`m in the UK and I know gecko G540 is expensive and difficult to purchase - I can only find USA suppliers for both. I have purchase 4.2A drivers from Arc Euro before they increased in price. Would you not recommend the cheaper Chinese equivalent drivers?

Also when I had the TEP I only used a parallel port. I know JAZZ mentioned motion control in a previous message - is motion control the way? It is at a large cost compared to the free parallel port!

Any suggestions as to a suitable BOB?

I`m dying to get this thing moving!

Chris

[JAZZCNC]

Chris I would remove the main board and replace with good quality Digital Drives. Don't be tempted to try doing this on the cheap it will only cost you more money in the end.
I would also buy individual drives rather than All-in-0ne board like G540 or MX4660. Not because they are not good but rather because they are not cheap for what you get.

Steppers are most likely re-usable but you will need details to know how to set new drives etc. ie: Amps also how many wires to detemine how can be wired.

If power supply may be re-uasable depending on it's output. If less than 36Vdc then I'd replace it.

The rest will be re-usable, ie: E-stop, switches etc.

Now regards the BOB and parallel port then it's mine field.!! . . Cheap nasty Bob's can send you bonkers at best of time, couple these toPc with ropey parallel port and you'll soon be smashing your head against wall in frustration.
So my suggestion is Don't do it. Buy Decent Ethernet based Motion control card and connect it to Good BOB.

Only Motion control cards I suggest are ESS or Cslabs IP-M. Now when it comes to BOB's then my first choice is not to use one at all, which I'll tell how in min, but if I have to then only one I'll use is from PMDX in states but it's expensive. If really have to then I'll use one from Cnc4you or Roy at DIYCNC. Don't entertain cheap nast ones off ebay.

Now my first choice for machine like this and by long way is the IP-M. This removes all the BOB issues because doesn't use one and comes with all connection terminals. It uses 24v I/O so is very noise immune. Comes with Spindle speed Controller built into it.
It's very high quality unit which is robust and very neat. Manufacturer and software Support is very good.

Now at first it may seem expensive but if compraed to ESS and High Spec BOB with Spindle Speed control then it's not, it's actually much cheaper.

You could go with buying the G540 or Mx4660 and fit ESS but this will still workout more money than doing it with separate Drives and IP-M and still would have lesser quality system.

[craynerd]

Ok, I've managed to uncover the motors



Motors are a Shinano SST58D 3830. 1.5v 4.4A

data sheet here http://shinano.com/motors/docs/SST58D.pdf

Anyone give me any hints on what this means - good or bad news? Please tell me I don't have t replace these!!

[Clive S]

They look OK to me. Can you find out what the secondary Voltage says on the transformer (or can you measure the DC Volts across the blue capacitor) in the power supply as Dean (Jazzcnc) has asked before

[JAZZCNC]

Anyone give me any hints on what this means - good or bad news? Please tell me I don't have t replace these!!

Like clive says motors are fine and you will be better using a new PSU with more voltage. If tight on budget then Technicly don't need a new psu and the machine will work with 24v even with new drives but you'll get much better performance with more volts. Not changing would be like having a ferrari and never taking out of 2nd gear.!

[Steve-m]

HI Chris
Im modifying a simalar machine using all the same bits as you CHD556, a KK01 Bob, and a UC100 Motion control, PLEASE can you help with some pointers on some of your wiring of existing bits,

1/ how did you rewire the 8 wire stepper motors?

2/ what did you do with existing PSU how did you wire that?

Thank you

[mchipser]

First let me say I know this is an old thread, but I just received the same CNC and was also wanting to do a mach3 conversion.. Gleaning from the previous post it looks like I can reuse the stepper motors and just need to replace the drivers and PSU, then a motion controller..

I ordered everything I think I need to get it done..

Shopping list:
x3 STEPPERONLINE CNC Stepper Motor Driver 1.0-4.2A 20-50VDC 1/128 Micro-step Resolutions for Nema 17, 23, 24 and 34 Stepper Motor
x1 LETOUR DC Power Supply 36V 350W AC 110V Voltage Converter DC 36V Adapter Aluminum Shell LED Power Supplies for Visual Doorbell, Brake Machine, Electric Driver (Silver) DC 36V 9.7A POWER SUPPLY
x1 SainSmart 5 Axis Breakout Board for Stepper Motor Driver CNC Mill
x1 C2G/Cables to Go 10338 DB25 Female Parallel Add-A-Port Adapter Cable with Bracket (11 Inch)

I already have a ESS (Ethernet Smooth Stepper) to use from a previous build..

Is there anything else you can think of?

Also to Steve-m, if you haven't figured out how to wire the motors I think they should be wired like the attached photo (please confirm if I am wrong).. this is based on the pdf here