Lathe I am trying to build

jim-in-michigan

Jim in michigan
I have a lathe that I am trying to make CNC. I bought a unit that has ball screws. It was made to set on the ways of a conventional lathe and have the two axis's. I bought the Masso controller so I didn't need to get another computer. I am trying to use stepper motors and drivers from Long's Motors. I can't get every thing wired up right, so I was wondering if someone could send me info on how to wire everything together. Thanks Jim
 

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jim-in-michigan

Jim in michigan
I am trying yo build a cnc lathe.I am using stepper motors 34HST 39805-02B2 2.0A 1.8 deg/step 8 wire motors, Wantai DQ 860ma Drivers. I need someone to tell me how to wire can't get the motors to turn. Thanks Jim
 

mattdom142

mattdom142
Quote from Jim in michigan on December 16, 2019, 12:52 pm

I am trying yo build a cnc lathe.I am using stepper motors 34HST 39805-02B2 2.0A 1.8 deg/step 8 wire motors, Wantai DQ 860ma Drivers. I need someone to tell me how to wire can't get the motors to turn. Thanks Jim

  • 8-Wire Stepper Motors

Some motors are also offered in 8-Wire configurations allowing for multiple wiring configurations depending on whether the motor's speed or torque is more important. An 8-wire stepper motor can be connected with the windings in either series or parallel. Figure 3 shows an 8-Wire stepper motor with both windings of each phase connected in series. This configuration is very similar to the 6-wire configuration and similarly offers the most torque per amp at the expense of high speed performance.


rtaImage


Figure 3: 8-Wire Stepper Motor (Series Configuration)


It is also possible to connect an 8-wire stepper motor with the windings of each phase connected in parallel as shown in Figure 4. This configuration will enable better high speed operation while requiring more current to produce the rated torque. This connection type is sometimes known as parallel bipolar wiring.


rtaImage


Figure 4: 8-Wire Stepper Motor (Parallel Configuration)


Although every stepper motor operates in the same basic way, it is important to understand the difference between each wiring type and when each should be used.
 

mattdom142

mattdom142
@jim-in-michigan

The above diagram clears it up for me pretty well.

Let me know if you need more help. But the basic principle is that you get to decide if Speed or Torque is what you want the motor to provide. I would recommend going for Torque. The manufacture should provide you with a diagram on how to configure that motor.

If not we should be able to figure out what wires to connect together with some trial and error.

Best Matt
 

jim-in-michigan

Jim in michigan
I have stepper motors from Long's motors model 34HST 9085-O2B2 8 wire, colors green,orange,yellow,black,red,blue,brown,white. Right now I think I have them wired in series configuration. I have green,orange together yellow,black together,red,blue together,brown,white together. To do a parallel configuration which wire do I connect together. All the wires coming out of motor are solid colors. Thanks for the help. Have a very Merry Christmas and Happy New Year.
 

breezy

Arie
Staff member
Jim,

Your description sounds like you have it already setup to be parallel.

If it was series connected you would only have two pair of wires connected together and the other wires would be "single".

Regards,

Arie.
 

jim-in-michigan

Jim in michigan
Breezy thanks for answering, this is the first try at using one of these forums. I got the masso for my lathe project because I did not want to look for a Pc. Are you in the US or another country? Would be nice to know the time difference.
 

breezy

Arie
Staff member
Quote from Jim in michigan on December 23, 2019, 12:44 pm

Breezy thanks for answering, this is the first try at using one of these forums. Are you in the US or another country? Would be nice to know the time difference.

West coast of Australia, we are 8+ UTC. It's 9:35pm right now.

The Bicton Men's Shed is using a G2 MASSO on a 3DTEK Heavy Mill CNC router.

Regards,

Arie.
 

mattdom142

mattdom142
Hi Jim,

Sorry i haven't helped much lately. I have been busy with my build and the holidays. Are you still having issues with the wiring?

I'm located in AZ so just a few hours off from you.
 

jim-in-michigan

Jim in michigan
Yes, I just posted a question,in the Question and Answer about setting the dip switches. I got all the motor, drivers,and power supply info.
 

jim-in-michigan

Jim in michigan
When I try to jog the motor with the jog set to continuous the motor only goes about a 1/4 turn. Do I need to put larger numbers in the min,max distance boxes in the axis setup screen? Right now I have -1.00 in the min box and 2.00 in the max box.
 

breezy

Arie
Staff member
Jim,

As you have some movement your driver dip switch settings are probably OK.

General setting for axis are
    • min = 0
    • max = length of travel
    • distance travel = amount of movement (travel) for one revolution of motor. Fine tune with wizard when your movement sorted.
    • pulses / revolution = number of steps for motor to do one revolution (1.8 deg = 200 steps) X number of micro steps set in driver.
    • feedrate & acceleration set to conservative values and increase once axis calibrated



These settings will get you moving.

Regards,

Arie.
 

jim-in-michigan

Jim in michigan
Arie

Thanks for the info. I set the boxes in the setup page to you instructions, and now it works fine. N ow I can set up my limit switches.
 

jim-in-michigan

Jim in michigan
@mattdom142

I finally got my stepper motors to run in jog . I noticed that the red/green lights on my stepper drivers Wantai DQ 860ma do not light up,should be green when working right. I am also having trouble wiring up the limit switches. Masso says you can use the hard limit switch for a homing switch also. Their wiring video shows 5v for the hard limits, do I need to get a 5v power supply? Any help with this problem would be a big help. My email is heistjim721@gmail.com
 

mattdom142

mattdom142
No power supply needed. The Masso provides it's own power for those devices. Simply use the Red power terminals on the Masso. They are located next to the inputs for convince. Double check to make sure the switch you use is rated for the power coming from those terminals. Which is up to 24v max. Just check it with a volt meter before doing anything.

Yes I use a hard limit switch. Not the proxy switches. Hard limit switch makes life much simpler. I use these. It's just 2 wires, one goes to power the other goes to the input. Then I 3D printed a mount. Easy as it gets.

https://www.automationdirect.com/ad...n_touch_(5_micron_repeat_accuracy)/csk087b-lr

As far as the Driver for your motor. I will have to research it further. The green and red light might require something ells that is not necessary. But I will check.
 

mattdom142

mattdom142
@jim-in-michigan

So the documents I read show that if the lights are off then you have a power issue. Either wrong power, (I don't know what that means either) or to little power.

Can you provide a link to the data sheet or instruction sheet? It would help to ensure we are reading the same thing.

Best Matt
 

jim-in-michigan

Jim in michigan
Matt

I got the green light now, don't know what I did just went around and re tighten all my wire connections.When I go to the jog screen, and push the continuous button I can't turn off the incremental button. I can't seem to get it to jog continuously, any suggestions?
 
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