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Author Topic: Nema34 to Mach3 IB connected to DQ860MA  (Read 1146 times)

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Re: Nema34 to Mach3 IB connected to DQ860MA
« Reply #10 on: May 03, 2019, 04:45:10 PM »
Yes on 1600 on dips on driver.. and set at 1600/400/200/0/0 on tune page. I put dip switch4 on for full current on driver and off no change. Have used the two highest amp setting on dip also, 6,7,8 doing ON OFF OFF and OFF OFF OFF for 7. or 7.8amp

Tried another computer I use to run a 3axis and it didnt change anything on the new setup where im just trying to run this lathe Im having issues with.

Cant think of what else can be the issue here

Offline reuelt

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Re: Nema34 to Mach3 IB connected to DQ860MA
« Reply #11 on: May 04, 2019, 05:06:36 AM »
Have used the two highest amp setting on dip also, 6,7,8 doing ON OFF OFF and OFF OFF OFF for 7. or 7.8amp

Cant think of what else can be the issue here
I think the common Nema 34 bundled5 with DQ860MA  is 3.5A MAX ONLY.

7 amp and 7.8 amp settings could have burnt up some of the stepper motor windings.

Also how many watts is your PSU?
Say it is 400W at 36volts. That is only 11Amps MAX.. How it that then able to supply 7.8A per phase to 2 or 3 motors? Just do the MATH.
Think before you try anything.
"the gift of God is eternal life through Jesus Christ our Lord"
Re: Nema34 to Mach3 IB connected to DQ860MA
« Reply #12 on: May 04, 2019, 08:38:37 AM »
I think the common Nema 34 bundled5 with DQ860MA  is 3.5A MAX ONLY.

DQ860A is 7amp peak 5amp rms, or 7.8amp peak 5.6rms for those last two settings.. the motor 85bygh450d-008 says 5.6amp. The 60volt psu is 5.85amp. These are cold unworked motors under no load so its not going to burn up coils just in a 1sec jog attempt. I also have this on all 240v so usually less heat, more efficiency and lower amps used on the psu plus higher output by psu.

Im using one 60v psu per motor on lathe so just two motors, two 60v psu per motor. 12v transformer to power the Mach3 Interface board(M3IB), and 5v usb to M3IB to power the 5+ on drivers.

I still think there is something else wrong, not the amp settings or toasting coils.
« Last Edit: May 04, 2019, 08:44:09 AM by nneukinn »

Offline TPS

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Re: Nema34 to Mach3 IB connected to DQ860MA
« Reply #13 on: May 04, 2019, 10:26:06 AM »
check PC5V to PCGND with a Voltmeter for 5V.

for a simple test you can take the Pul- wire and put it to PCGND.

PUL+ should be connected to PC5V.

every time you do this the Motor must do one single step.

then you see wether the Problem is on the stepper side or BOB side.
anything is possible, just try to do it.
if you find some mistakes, in my bad bavarian english,they are yours.

Offline TPS

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Re: Nema34 to Mach3 IB connected to DQ860MA
« Reply #14 on: May 04, 2019, 10:33:01 AM »
here:
https://www.youtube.com/watch?v=uglCm_qsojk

is a Video how to test the single signals, it is for parallel port but
the principal test is the same, just use the terminals of the BOB.
anything is possible, just try to do it.
if you find some mistakes, in my bad bavarian english,they are yours.
Re: Nema34 to Mach3 IB connected to DQ860MA
« Reply #15 on: May 04, 2019, 11:30:51 AM »
Thanks TPS!   I tried grounding the X like you said and it stepped... so then after looking at your video.. I was like damn I need to just test each axis on this interface board with a single driver/stepper connected. So X works, Y works, got to Z and its messed up so its a bad mach3 interface board I hooked the Z on lathe to Y and changed pins on Mach3 and everything is working fine for now. Ill order another board or two just to have a fully working one.   Thanks guys!