First time build - Steel Frame CNC Router

[examorph]

Thanks Dean, drawings almost updated but I am still struggling with figuring out how to wire the water pump direct to the VFD on board Relay
Also, after searching many posts I noticed that most people seem to be using a pump ran off of mains voltage instead of 24VDC as shown, so would something like this be more suitable? http://www.ebay.co.uk/itm/2000-L-H-W...3D390532181450
If so, how would I wire it direct to the VFD so that it has mains supply only when spindles running please? Thanks.

[Davek0974]

If using a small mains pump, as i do, use a separate relay to control it from the vfd.

The vfd has a relay - you need to set the parameter which turns this on when the vfd is in the 'run' condition.

Next, feed this relay a 24v supply to the 'com' or common contact, then from the 'n/o' or normally open contact you go to the +(if marked) terminal on your pump relay, the - terminal then goes back to your 24v supply.

Now you have a separate relay which turns on with the vfd. The relay will have common and normally open contacts - feed a fused live supply (1A or 2A fuse) into the common, then normally open to your pump, other pump lead back to neutral.

That should be it :)

The reason i would do this is for isolation - i don't like having 240v mains anywhere near the logic side of the vfd terminals.

[JAZZCNC]

Exactly like dave says but here's pretty pic just in case. Don't forget to change VFD param.

If you do end up using 24Vdc pump you can Dump the Extra Relay just run 0Vdc thru FA FB terminals straight to pump.

[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.!