Recommendations for PC to run p.m. 940 conversion

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Vwfan
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Re: Recommendations for PC to run p.m. 940 conversion

Post by Vwfan »

What wires are recommended to be shielded
Vwfan
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Re: Recommendations for PC to run p.m. 940 conversion

Post by Vwfan »

If I had a little better direction or some one on one with somebody that’s actually done this I may have come out with a little better results but I was I did was go up on the videos and try to pay attention to the key points. i’m sure they’ll be some alterations needed at some point but if you have more input on the shielded wire recommendation I would gladly listen and replace the wires that are needed and I spent a couple hours today trying to make a small harness to run from the CNC control box over to the power control box so that I can control the VFD. also I’m assuming once I hook up the VFD all the manual start stop and speeds that were originally on this model should be removed is that correct?
Vwfan
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Re: Recommendations for PC to run p.m. 940 conversion

Post by Vwfan »

My plan to make the harness to go from the VFD over to the acorn. what is the simply use some 14 or 16 gauge wire eight of them to be exact zip tie them together put them in a little conduit and shoot them through the top of the boxes do I need to worry about that while you’re being shielded or that harness basically being shielded
Vwfan
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Re: Recommendations for PC to run p.m. 940 conversion

Post by Vwfan »

Oh and don’t let me forget happy happy happy happy happy Thanksgiving to all of you thank you for your continued input and support and I appreciate being part of this group
tblough
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Re: Recommendations for PC to run p.m. 940 conversion

Post by tblough »

Step and direction signal wires should be shielded, twisted pair wires. Servo drive power wires should be shielded. Spindle wires between motor and VFD should be shielded.

Shields should be grounded at least at the signal origin end. There are two religions on whether shields should be grounded at one end or both. I belong to the both cult, but your mileage may vary.

All grounds should run to a common point; commonly cslled star grounding.
Cheers,

Tom
Confidence is the feeling you have before you fully understand the situation.
I have CDO. It's like OCD, but the letters are where they should be.
Vwfan
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Re: Recommendations for PC to run p.m. 940 conversion

Post by Vwfan »

OK well my depth and direction cables and the power to them I believe is shielded though it’s not grounded but those don’t even run in the cabinet I have my boards completely at the bottom, so for the eight wires I need going from the VFD over to the Acorn I need to find a cable that has eight wires in it with a shield going around it that I can tie the shielded wire to the star grounding point is that correct??
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Vwfan
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Re: Recommendations for PC to run p.m. 940 conversion

Post by Vwfan »

Also I’m not sure if anybody can help me here but I’m trying to tune the clear path Servos I started with Z and I keep getting this message about 3/4 of the way in I know it’s not binding or stuck I have my Gibbs strips almost close to all the way out, when I put it in the pendant mode and move it with my wireless pendant there’s no binding at all all the way up and down smooth but then when I go back to the auto tune it can’t make it through the process
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suntravel
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Re: Recommendations for PC to run p.m. 940 conversion

Post by suntravel »

What size motor you have on Z and pitch of the ball screw ?

Uwe
Vwfan
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Re: Recommendations for PC to run p.m. 940 conversion

Post by Vwfan »

I was told by the Arizona Cnc Dave also Marty that the one I’m using is more than enough I believe it to 1300 ounce of torque, Ballscrew pitch I’m not sure I just ordered it with the kit from Arizona Cnc and when I was purchasing it he communicated quite a bit but now that I’m trying to communicate with them I hear nothing
Vwfan
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Re: Recommendations for PC to run p.m. 940 conversion

Post by Vwfan »

Here’s the model
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