First time build - Steel Frame CNC Router

[examorph]

Thanks for all the help guys, this makes things so much more clear! If I understand this right, would using terminals FB & FC have the same result for 250VAC? Sorry if its a daft question as i'm clueless when it comes to electronics!!

Please if you get the chance could you give the updated schematics a final once over? Only additional thing I changed further to the suggestions was earthing the Spindle to the VFD rather than star point as I guess will make wiring easier.

I noticed that AliExpress have a sale going on Friday, so would I be OK going ahead and buying the below whilst the deals are on?
3x - https://www.aliexpress.com/item/New-...2-5560f2d46d31
1x - https://www.aliexpress.com/item/Wate...a-7162575c4107

I already have a 80mm spindle clamp but sale price seems to beat all eBay offers I can find for just the spindle/VFD alone

Schematics

[JAZZCNC]

Thanks for all the help guys, this makes things so much more clear! If I understand this right, would using terminals KA & KB on the VFD have the same result? And if I used FB & FC, the same could be done for 250VAC? Sorry if its a daft question as i'm clueless when it comes to electronics!!

While the manual mentions KA & KB I think you'll find there isn't any terminals with those markings. Well not on any I've fitted anyways.

The manual is confusing and I think wrong. On most I've fitted FB is Common and FA =NO with FC=NC manual shows it other way round I think.
The 3A/240Vac 3A/30Vdc are the ratings of both contacts and not for one set like what manual leads you to think.

Just wire it like shown and it will work.

[Clive S]

I noticed that AliExpress have a sale going on Friday, so would I be OK going ahead and buying the below whilst the deals are on?
3x - https://www.aliexpress.com/item/New-...2-5560f2d46d31
1x - https://www.aliexpress.com/item/Wate...a-7162575c4107

They seem fine to me make sure the VFD is the one in the picture as sometimes they send a different one out.

[JAZZCNC]

Please if you get the chance could you give the updated schematics a final once over? Only additional thing I changed further to the suggestions was earthing the Spindle to the VFD rather than star point as I guess will make wiring easier.

Ok few small details.

The Green wire you have coming off Stepper B (-) I'm hoping is representing Shield going to earth and your not actually taking B(-) to earth.? If correct still only earth at the Controller end not the Stepper end.

Don't need 24V to outputs 0-3 because your not using any. Your only using the onboard Relay which is output 4 and doesn't need 24V.

Fans can get away with sharing fuse. I use 2 x 12v wired in series because are cheaper and easier to find.

With the 24V for Controller I/O save your self some wire and jumper between the Pins. Don't need to run separate wire to each pin. (See pic)

Don't forget to send Earth to Machine Frame.

[Lee Roberts]

Thanks for all the help guys, this makes things so much more clear! If I understand this right, would using terminals FB & FC have the same result for 250VAC? Sorry if its a daft question as i'm clueless when it comes to electronics!!

Please if you get the chance could you give the updated schematics a final once over? Only additional thing I changed further to the suggestions was earthing the Spindle to the VFD rather than star point as I guess will make wiring easier.

I noticed that AliExpress have a sale going on Friday, so would I be OK going ahead and buying the below whilst the deals are on?
3x - https://www.aliexpress.com/item/New-...2-5560f2d46d31
1x - https://www.aliexpress.com/item/Wate...a-7162575c4107

I already have a 80mm spindle clamp but sale price seems to beat all eBay offers I can find for just the spindle/VFD alone

Attachment 19570

http://m.ebay.co.uk/itm/170746857178

£180

[Clive S]

Lee that looks to me to be the cheaper VFD

[JAZZCNC]

Lee that looks to me to be the cheaper VFD

Yes thats the Huanyang Copy and best avoided.!

[Lee Roberts]

Yes thats the Huanyang Copy and best avoided.!

Why?

[JAZZCNC]

Why?

Mainly because No Isolation on Analog. But other smaller niggles are No RPM readout only Khz. Only 12Vdc output not 24Vdc for controlling external devices And I'm not sure but think it doesnt have onboard relay but been while since fitted one so may be wrong.

Then in general didn't like the build quality and the Manual was Crap.!

Huanyang Vfd's have got much better in recent years and now come with half decent paper manual. However they still have longway to catch up with likes of Invertek or IMO etc.

[Lee Roberts]

Mainly because No Isolation on Analog. But other smaller niggles are No RPM readout only Khz. Only 12Vdc output not 24Vdc for controlling external devices And I'm not sure but think it doesnt have onboard relay but been while since fitted one so may be wrong.

Then in general didn't like the build quality and the Manual was Crap.!

Huanyang Vfd's have got much better in recent years and now come with half decent paper manual. However they still have longway to catch up with likes of Invertek or IMO etc.

KK, I'll email them now quickly and ask if its a gen Huan or not, though I quite like the look of the Invertek from Joe now I've seen them, I dont think the spindle's on their own cost that much now days do they, could be a nice investment if I was to pair them up using the 4 bearing version?

Looks a good option to me!

You'll have to go first then Joe, as i'm not that far in to my build yet