New CNC Mill on the horizon

[njhussey]

It's generally a good idea to separate power from signal cables but that would mean 2 lots of e-chain...

[routercnc]

I'd agree with separating power from signals
My machine has echain down either side of the X axis carrying each type.
The machine before this one has some of them together and tripped out quite a lot. The new one is much better but the long Z home cable occasionally still causes a trip.
I must point out that the previous machine and the current machine both use cables direct from the BOB so they end up being long especially Z. How much of this can be improved / removed further by using relays etc I will soon find out because that will be of my electrical upgrade in progress.
Back to your question. I started with 50mm or so but these are quite bulky so latest machine has something like 20-25mm width and is much more compact whilst still taking the cables. Helped by splitting runs down each side as mentioned.

[fvfdrums]

Right,

I am about a week away from getting the control box wired up so I am just ordering some parts last min.

The PSU I have ordered is http://www.airlinktransformers.com/c...nge/CM0625225/

I wanted to check if these parts are going to work ok with this coil.

Bridge Rec:http://www.ebay.co.uk/itm/KBPC3502-B...item35e3aaabd5

Capacitor:http://uk.farnell.com/vishay-bc-comp...uctSubstitutes

I know Rapid do a cheaper one as do Farnell however they have indicated it probably won't be back in stock for a good 10 days which is too long for whats planned in the diary!

If I am a mile out please let me know :)

[Clive S]

Those bits are fine. But as you know the cap is a bit (lot) expensive. ..Clive

[fvfdrums]

Many thanks Clive

I am searching around in the hope of finding them a bit cheaper but at least i am on the right track!

Cheers

[njhussey]

You might find it cheaper to get multiple smaller caps, I got 4 x 4700uF ones for a few pounds each, just means more connections to make...

[fvfdrums]

Also... what sort / size cable do people generally use for wiring coming from the psu to the stepper drives and wiring the power elements of the estop circuits bearing in mind I am using the CSMIO from cslabs so its all 24v in relation to the motion controller except the mains in

Just trying to get an idea of whats best to order in bulk

[Clive S]

Also... what sort / size cable do people generally use for wiring coming from the psu to the stepper drives and wiring the power elements of the estop circuits bearing in mind I am using the CSMIO from cslabs so its all 24v in relation to the motion controller except the mains in

Just trying to get an idea of whats best to order in bulk

You could use cat5 flexi cable or a screened cable for all the switches and limits, Estop etc. 1.5mm CY 4 core for the steppers (don't forget to ground to a star point at the driver end) and a bit of 2 core from the 24V power supply to the BOB.

[Clive S]

For signal cables you want Shielded CY cables or like Clive says you can use twisted pair Cat5 but only use inside control panel not running to limits etc on machine as it's not really flexible enough. I tend to use Cat5 in box as theres less wires and one cable will provide for 2 drives.

Yes quite correct I should have said cat5 flexi as in the patch cable type. (although you can buy flexi by the roll). Clive

[JAZZCNC]

Also... what sort / size cable do people generally use for wiring coming from the psu to the stepper drives and wiring the power elements of the estop circuits bearing in mind I am using the CSMIO from cslabs so its all 24v in relation to the motion controller except the mains in

Just trying to get an idea of whats best to order in bulk

You want Tri rated for general single wire runs for power to steppers, relays etc like this. http://www.csecables.com/acatalog/Tr...l#aTri_2d0_2d5

For signal cables you want Shielded CY cables or like Clive says you can use twisted pair Cat5 but only use inside control panel not running to limits etc on machine as it's not really flexible enough. I tend to use Cat5 in box as theres less wires and one cable will provide for 2 drives.
http://www.csecables.com/acatalog/CY-Cable.html

Bear in mind the Csmio doesn't provide voltage from the I/O you have to feed it 24V +/- to each I/O so you'll need plenty of connections on the 24V rail or do some jumpering. Suggest you get some Din rail terminals with Jumper bars to create one Multi connector.