Messages

1

General Discussion / Bridgeport repower

« on: November 30, 2020, 08:28:30 AM »

I recently put steppers on my cross slide using the PMDX 411 and Chinese drivers and BOB. I was showing a fellow worker a video of my working CNC and he told me his uncle had a CNC for sale. I wasn't holding out much hope of getting it when he told me it has not ran for years and he wanted 250.00 dollars for it. I was thinking tape machine.
To my surprise it was a mid 90s bridgeport with a milltronics control, that came with 30 ntbm30 tool holders.
I bought the machine within 5min of seeing it and I only had 20s so I couldn't come up with the 250 so the nice man said just make it 240.
I got the mill to power on but when I try to home it I get a 404 error code and the x axis never resets
I was able to fake home and get Z and Y to jog but X will not move
I am using a 3hp 30amp cederburg roto phase and when I try to start the spindle it starts spinning but quickly stops when the controller re-boots. (I think I need a bigger converter)

GA370-3 DRIVERS
MT30M4-38 FERRITE BRUSHED DC MOTORS FOR X-Y
MT30U4-42 FERRITE BRUSHED DC MOTORS FOR Z
CENTURION V CONTROLS


Now to my questions
If I cannot get the current system to work, what would be the best method to upgrade?
Does PMDX have a system that would provide enough power to run theses motors?

2

SmartBOB controllers and dedicated accessories / Re: 411-Chinese BOB Not working

« on: November 17, 2020, 07:36:22 PM »

I got a motor to turn :)
had to put a jumper form the 5V to the EN

motor sound like crap ..... but ill save that for another day

3

SmartBOB controllers and dedicated accessories / 411-Chinese BOB Not working

« on: November 16, 2020, 07:14:22 PM »

I bought a 411 to try and get my Chinese BOB and drivers to work. I am having NO luck, my drivers are getting a signal when I try to jog but no motor movement. I have no idea what to try next,I have went thru all the set up many times with no change.

I was trying to figure this thing out by looking on-line and I found OpenBuilds black-box. I bought it and had my motors working in about a half-hour after I got it.

Now I have a 411 BOB and 4 drivers that I can’t get to work.

I have tried to contact PMDX to see if they had any idea what to try, but no response.

Anybody got any ideas?

Thanks
Rocky