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Messages - mikeyz3385

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General Mach Discussion / Stepper motors are acting weird! please help
« on: March 03, 2016, 09:53:47 PM »
I'm in the process of upgrading an old cnc lathe with all new electronics. Everything was fine when I first installed and wired everything up. I'm still in the process of wiring other small things but for whatever reason whenever I turn the power on my stepper motors decide to start moving on their own. They keep moving until I jog either motor then they hold. If I keep jogging the axis, it sometimes goes smooth in one direction but the other direction is very rough. Does this sound like a wiring issue or possibly a weird setting in mach3. My setup is just ebay nema 23 motors, c10 breakout board, gecko g251x and 24v power supply for the drivers. Also if I was to turn the power on the electronics without going into the mach3 software then the motors hold without moving at all.

I'm not sure how to delete a post but I went ahead a decided to go a different route with a different drive.

General Mach Discussion / Spindle servo drive not working with mach 3
« on: February 28, 2016, 10:14:04 PM »
Hi All,
       Currently doing a complete electronic conversion on a old cnc lathe. The lathe came with a SEM servo motor that was powering the spindle. I purchased a DG4s series driver that uses step/dir to operate my spindle. I went ahead and started wiring up the drive to the oem encoder and servo. I get power, no errors no smoke! Once in mach 3 I setup the correct port and pins, step/dir and within the spindle tab I have the disable spindle relays box checked, and use spindle motor output, step/dir motor also checked. I go into manual mode and simply type in a basic code like g97 s100 m03. The chuck begins to turn without any issues. It will even work fine with m04. My problem is that I can't turn the spindle off. I type in m05 and it says the spindle stops on mach 3 but my actual spindle is still moving. Only way I am able to get it to turn off is by shutting my entire machine down. btw the spindle servo drive is wired into a c10 bob.

Does this sound like a wiring error or am I missing something in the mach3 settings?

General Mach Discussion / Re: Newbie question about push buttons
« on: January 02, 2016, 11:02:32 PM »
PoKeys USB has a MACH3 plugin, so you can set up, an input matix that triggers doOEMbutton. It can give feedbach with LEDs, control LCD 4x20. MPG etc.
I made my self a rather decent operator panel with it.
Now the USB version _can_ be setup as keyboad emulation, but in 99% of the cases it's not needed.

Very cool looking panel. Kind of embarrassed of mine now haha. That shuttle pro sounds fantastic but being that I've finally finished my panel I might at well go with the pokeys usb instead. Either way though thank you both on your knowledgeable input

General Mach Discussion / Newbie question about push buttons
« on: December 30, 2015, 10:51:52 PM »
I'm in the process of retrofitting an older cnc lathe called a dyna myte 3000. I've gutted the out of date electronics and am starting fresh. So far I have purchased a c10 bob, gecko 251x drivers and will be reusing the original power supply since it worked fine before. I went ahead and made my own control panel for this machine which includes a power switch, spindle switch, toggle switch for opt stop, a button for cycle start and one for feed hold. I also installed 4 separate buttons which will control the feedrate and spindle rate override up and down.

Wiring anything more than just stepper motors is all new to me. Do I need to make my own script in order to have mach3 communicate with the buttons I installed? or is it as easy as setting up a hotkey

Sorry for the long delay, ended up moving my shop a mile up the road. I seem to have things figured out on my little lathe except for one thing. I'm still lost when it comes to this spindle. Here is the specs

SEM MT30 U4-48, Serial#H10062
 Max RPM 3000, Volts 140, Pulse Amps 57
 Cont Stall Torque 4.5 Nm, Insul F
 Tacho 7V per 1000 rpm
 Brake- Supply 110 vac F90-1059

I did however find a dead forum where someone has claimed to use a dg4s-16035 dc positioning servo drive. 160v 35a 80VDC max without braking circuit. He paired it with a brkc-180 braking circuit. This is the first time I've ever tried to cnc a spindle so any help will do.

If you need some more information on parts of my machine ill be happy to get it for you.

Thank you greatly rich for the quick response. I do apologize for not including the info. Tonight I will try and gather as much info about the machine and electronics as I can so it will help everyone out. Thanks again



Hi everyone! I've followed several sites about doing a similar conversion, and i am slowly building up the confidence to convert mine. I purchased mine about a month ago and was told everything worked. Upon studying its manual I slowly became familiar with how to somewhat set up this machine using its very outdated controller. To my disappointment there was several buttons on the controller that wouldn't work. I have tried a couple different attempts to fix it without any luck so I am now leaning more towards the conversion since I have yet to even play with this machine.
I would like to follow the footsteps of a couple of different guys on those sites as for the electronics they have picked out, however I do have several questions. I've built 3 small benchtop mill and lathes before but only using cheap Chinese steppers/drivers. So far everything is holding up but being as how I've spent a bit of money on this machine alone I'd like to give it decent quality electronics.

I apologize in advance if my questions seem too "newbie" but I just want to be sure I'm on the correct path.

I've copied this from another site from a guy I believe his name was MRM

He wrote what he has purchased:

1. Bardac 1600i
2. G540 Stepper Controller
3. 48V w/ 24V/5V Keling Power Supply
4. C10 bi-directional break-out-board
5. 20A EMI Filter

Here is some of my concerns

Bardac 1600i is what you would use to control the spindle correct? Will I also need some sort of index pulse card to know the spindles location? Also is the bardac literally $600+ or am I seeing things? Why can't we use the original or won't it communicate with mach 3?

The g540 controller seems very popular and nice quality. Will that control both the z and x or will I need to purchase 2 of these?

The power supply seems self explanatory

The c10 break out board. Will it be able to control things like the turret, coolant, limit switches ext... ?

What exactly is a 20a EMI filter?

I've read on some of those posts that someone has a script written for the turret movement in mach 3 so hopefully I can eventually retrieve that as well in the near future if I can get moving on this project.

I'll post some pictures in a couple minutes of its current condition. Thank you to whoever can help me out in this

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