MK1 Steel router build log 1500x800x200

[driftspin]

Hey guys,

I need some advice on how you guys connected the 8 stepper wires to the 4 wire shielded cable.

Did you guys just solder and heatshrink it to the cable?


I also feel like i need to connect the cable shield to the body of the stepper motor.

Some photos would do the trick :-)


Any advice is welcome.


Grtz Bert.

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[Nr1madman]

Hey guys,

I need some advice on how you guys connected the 8 stepper wires to the 4 wire shielded cable.

Did you guys just solder and heatshrink it to the cable?


I also feel like i need to connect the cable shield to the body of the stepper motor.

Some photos would do the trick :-)


Any advice is welcome.


Grtz Bert.

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I just soldered with heatshrink. Not pretty but it works :D

My stepper motors are grounded through the machine frame.
If connecting the wire shield aswell it might create a loop?

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[routercnc]

Is this any help? I wire up the Z steppers towards the end of the video.

https://www.youtube.com/watch?v=UQVooJ1aURM
About 25:40 time stamp

I started by trimming the motor wires as short as I dared as this last part is not shielded. I’ve not seen anyone run the shield right to the motor. May get a ground loop if the machine is also grounded ? Not sure.

[driftspin]

Is this any help? I wire up the Z steppers towards the end of the video.

https://www.youtube.com/watch?v=UQVooJ1aURM
About 25:40 time stamp

I started by trimming the motor wires as short as I dared as this last part is not shielded. I’ve not seen anyone run the shield right to the motor. May get a ground loop if the machine is also grounded ? Not sure.

And again your skills humbled me.

You make it look so easy.

Yes heatshrinking like you did was what i intended.



For what i know about shielding..
Shield grounded to 1 side , or go all out and create a full shield EMC protection style.

Pigtaling the shield to the motor is not going to work and yes will probably create a loop if not done right.

So yes i think heatshrinking soldering is the only way forward.

Anyone working in their shop these days?
Man it is hot under a tarpaper roof


Grtz. Bert

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[Nickhofen]

Be carful for what you say,I said that there was too much heat in my workshop and we had temperature drop here and was raining for almost one week! ;-)

[driftspin]

Be carful for what you say,I said that there was too much heat in my workshop and we had temperature drop here and was raining for almost one week! ;-)

Yes it is still hot :-)

Ok some pictures.

Grtz Bert.


Ok have not decided yet if ill run the stepper cables directly to the drives.


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[routercnc]

I connect the steppers direct to the drives. Some use connectors at the input panel to the box but for me this is just another source of potential noise. How often do you need to move the machine? Unscrewing a few terminal blocks on the drive takes just minutes. Up to you but I would go direct.

[Doddy]

I connect the steppers direct to the drives. Some use connectors at the input panel to the box but for me this is just another source of potential noise.

Noise?, okay, with an unshielded connector and a (very) poor connection. More likely, you'll be introducing resistance , and that will have a detrimental effect on the machine (whether measurable, is something else - if the PSU is spec'd correctly and the drivers are in constant-current then it should will have a limited effect).

It is a balance between cost and convenience first and foremost. If I had a cabinet with the holes for the steppers pre-drilled (as appears to be the case in that impeccable cabinet) then I'd go connector. If you never disconnect them, then the convenience never comes into play and you've lost the cost of 6-12 connectors over the life of the machine. If you have to disconnect them then, without the connectors, you're suffering inconvenience each time. It also helps to be able to isolate cables from cabinets during construction, installation, maintenance, etc.

Call me lazy - I prefer to make life as easy as possible for myself.

How often do you need to move the machine? Unscrewing a few terminal blocks on the drive takes just minutes.

Sods law : if you provide connectors - you will never move it. If you don't - you will :)

Remaking screw terminals is not a great use of time - you shouldn't re-use the existing wire/crimp without remaking (I would re-use, in the knowledge I'm doing wrong, again out of laziness - it'd bite me in the end).

Up to you

Absolutely.

My only caveat on my view above - I'd make sure to use a vaguely appropriate connector.