CNC Spindle Cable Assembled Incorrectly..

[@Cdaprod]

Thank you for demonstrating and for your passion on the topic

[@corvetteguy50]

Thank you for your support, and kind words. Vince

[@zakariakhamees]

Thank you. I am Gonna redo the soldering for my vfd before i use it for the first time today! I have not used flux because i didnt know how its used and didnt know it is nessecary. Soldering took me like 1 hour because the tin kept blobbing on me and not sticking, it drove me crazy! I didnt know flux would do this magic.

[@corvetteguy50]

I'm glad to hear you put your safety first. Its certainly the right thing to do, and flux will certainly make the job a much faster one. Thank you, Vince

[@dudule1232]

thank you so fucking much, especially the flux part and the "no matter which cable connects to either u, v or w". you changed the way i'll solder for ever !

[@corvetteguy50]

Thank you for your support. I really appreciate it! Vince

[@mikko3d]

Thanks for the info. However, I don't quite understand the last point about using shielded cable for the VFD input as well. From my understanding, we would use double shielded cable for VFD -> spindle to mitigate the high frequency noise caused by the VFD switching transistors (let's say 10 KHz). But why use it for the 50/60 Hz input? I don't think I've ever seen household appliances use shielded cable.

[@corvetteguy50]

Thank you for your support, and your question. Double shielded cable is in best practice to be used as it mitigates the spread of EMI around your robot/controller in both frequencies. You're correct home appliances don't use shielded cable, but they also aren't vulnerable to stability from the EMI they produce. They only have to worry about turning on to function. Robots are a completely different animal from a regular power tool, or appliance and require an environment of low EMI to produce a stable system. Robots unlike other systems can appear to be functioning correctly, but may lack consistent operation. If an end user for instance uses the proper cable for their spindle, and not their switches can produce a lack of consistent operation called "ghosting" . The correct double shielded cable will provide the end user piece of mind, and a stable robot.

[@mikko3d]

@@corvetteguy50 Thanks for the detailed answer. It is helpful, since I'm building my first CNC machine (PrintNC mini)! I also plan to use an EMI filter on the VFD input and a ferrite ring on the VFD output to further mitigate electrical noise.

[@corvetteguy50]

If you use double shielded cable an EMI filter, and ferrite rings aren't required, but I certainly love the attention to detail :) Thank you, Vince

[@ronin2167]

Is that the Amtech table vice?

[@corvetteguy50]

Its not that brand, but a similar model. Thank you, Vince

[@jb510]

I always assumed most solder was "flux core" and one didn't need separate flux with that. Is that reasonably true? Regardless, I'll be more careful going forward, thank you for the video.

[@corvetteguy50]

Thank you for your support. The flux inside the solder is simply to help the solder clean the surface its about to be applied to. Its in no way a substitution for using the proper flux to allow proper wetting, and for the solder to begin capillary action. Its a must, and i assure you once you use it you'll love your finished joints when they're completed properly. Thank you, Vince

[@wallstreet497]

No flux no soldering . Quality soldering always need flux,shoddy soldering does no need flux

[@corvetteguy50]

Thank you for your support. I couldn't agree more..:) Vince

[@carlslater7492]

As I understand it, shielding is to prevent EMF (EMI) interference. How do you personally measure EMF? EMF just seems like the infamous boogey man, and a way to measure it should help determine if it is a problem. Thank you.

[@TheStoryist]

You would utilize an EMF meter, but the issue is just how much EMF effects your robots signals. Each environment is different, so the results will vary which is why it's such a "boogey man" as you said.

[@corvetteguy50]

Thank you both for your support. The Storyist is correct. EMF can be measured, but it's the amount that each individual robot's breaking point for signal stability that counts. Its simply has to many variables to get accurate data for each that provides definitive consistency.

[@carlslater7492]

@@corvetteguy50 Fair enough, but being an engineer numbers are how I know I actually achieved the change I wanted. Something along the lines of, I changed this and got a 25% reduction in the field. After 44 years in the field, you can see this approach is causing my internal gears to grind and bind.

[@mattivirta]

how i connect shield net top at cable to VFD ground, spindle UVW side not have Ground screw terminal output side, only input side have Ground terminal and L and N. need i connect shield net input terminal Ground. very long need open cable can take out shield net and wiring to other side VFD this "wire" and cover this shield wire shrink tube.problem come this, need cover UVW side shrink tube but need wiring shiel to other side VFD shrink tube need make hole can take out shield wire before aviation plug. hmm. not possiple make this. how this need doing.

[@corvetteguy50]

You should solder a lead to the tinned braided copper shield if the cable you're using doesn't have an integrated shield drain. You then would solder a ring connector on the opposite end of this lead, and install it on the ground terminal of your VFD. Thank you, Vince

[@mattivirta]

@@corvetteguy50 thanks, i solder to shield net piece at Ground wire and move Ground terminal. i say first little wrong, aviation plug side not need Ground wire i understand.. sorry my english not good, tomorrow need open my aviation plug solders and make better new all, but not can add shrink tube because wires have short and solder wires to plug shrink tube hard to wires, not can move shrink to cover connection pin. or need be very long wires open shrink stay far at soldering point. and all has solder ok, then add all cable big shrink problem have aviation plug have very small size (include whit spindle motor box) and cable size 12mm and aviation plug hole size 7mm. 2,2KW spindle and VFD kit. need peel top cover and shield net and second cover stay only 4 wire can but in plug hole in. after all soldering job need add to outside plug new shrink tube 2 piece. maybe. ok, need try new tomorrow. vevor 2.2KW spindle have. next job have how make all parameters right to VFD ;) thanks you video help me lot, im has make elektric work 20 year but you video i learn lot new tips.

[@MakeNoise280]

He is a KZbin TikTok and Google versity graduate.

[@corvetteguy50]

Ok Thank you for your support. Vince