nema 34

[saas]

my friends,

After once again overcome personal problems continue with the planning and construction of CNC,

Ah, life is sometimes very difficult, but always after the rain comes the sun, and opposite

I think that this is a stepper motor http://img443.imageshack.us/img443/4534/nema34.jpg (http://imageshack.us/photo/my-images/443/nema34.jpg/)

Uploaded with ImageShack.us (http://imageshack.us) is very similar :::: PK296A2A-SG7.2?


greeting

[Richards]

There are three important data items that should be part of motor selection.

1. Physical size = 34

2. Holding torque = [at least] 350 oz*in (2.5 newton metres) for geared or belted motors, [at least] 600 oz*in (4.25 newton metres) for motors without reduction

3. Induction (mH). Lower is better.

The motor you selected has high inductance. It will work with an 80 VDC power supply, but a motor with 1.5 mH to 2.5mH would be my choice.

[Mrayhursh]

When wiring the 4 motors that I ordered from metal head mike. Do I connect the wires for the coils at the motor? And just put a wire nuts on them. What are the methods for connecting the motors to the system. I have concerns about the vibration that will occur during operation. Help!!

[smreish]

NO WIRE NUTS.

Use a connector like
4 pin XLR available at

http://www.markertek.com/Connectors-Adapters/Audio-Connectors/XLR-Connectors/Neutrik-USA-Inc/NC4FX.xhtml

Or - other locking 4 pole connector rated for 10Amps @ 80VDC

Or - butt joint, solder and heat shrink the connection and home run to control box drivers.

[domino11]

Or better yet, Western Union joint, then solder and heat shrink! :)
http://www.tpub.com/neets/book4/12a.htm

[smreish]

Heath....that's kinda what I meant! Thanks for clarifying :)

[Mrayhursh]

I do like the idea of the XLR connectors. Does anyone have a close up shot? I see the motors have 8 wires and I will be usings the 4 pin XLR connectors. Which wire goes where? Will I need to wire this bi-polar(Series or Parallel) or uni-polar? I searched Google and found http://www.kelinginc.net/KL34H280-45-8A.pdf

[KenC]

This is the fun part with DIY, you get to decide which pin/wire goes where.

PS, I've never once need to disconnect the motor since mine was commissioned. IMHO, XLR connector is luxury.

[Mrayhursh]

ok what about the unipolar vs bipolar?

[KenC]

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