New Build 1000x600x200mm (newbie)

[Noplace]

thanks guys for all the info, one question on another topic: how do you mount the linear rails on steel boxes/frames ?
I'm thinking of designing the body out of that since its readily available locally instead of alu t-slot extrusions but I don't know the technique you use to mount them, seems you cant access under to put nuts for the bolts!

[routercnc]

If the steel box section is 5mm thick or so then you can drill and tap it and bolt the rails directly. You can optionally place a strip of steel inside the section clamped to the underside of the top surface and drill and tap through both to get better thread engagement.
Be aware that your rails will only be as flat and planar as the top surface of the box section so read up on epoxy mounting or shimming methods to get the best DIY result.

[Noplace]

Thanks for the great info, I would like to try epoxy but I have no experience and I'm afraid it just might be messy and don't think local workshops here have experience in doing it. would shimming be more approachable and any guides on that?

on a different topic I got my VFD (spindle still in the way) and would appreciate if you could confirm wiring:

this is a FC300-2.2KW



So L and N are input obviously, PE is ground, PB P+ are braking resistor connection.

first do I connect PE to both spindle and input ground or just input ground? I'm assuming spindle comes with 4 inputs so 3 of them would be the U V W and last one is earth, is that correct?

second, I have this board called C6 http://www.cnc4pc.com/Store/osc/prod...products_id=58 which is supposed to control the speed and on and off/dir from the software(mach3) once I connect it to my BOB.

would you be kind to confirm the connections between the board and the VFD? the only one I figured is analog output to AVI.

the board has separate ground for the analog and digital, should they be both connected to the COM inputs in the VFD? and there are two COMs which is confusing me further.

[Boyan Silyavski]

Generally you will need the C41 board not the C6 for spindle control. why did you do that?

c41
Inputs a PWM and outputs an analog 0-10VDC.

C6
• Inputs a frequency (step) and outputs an analog 0-10VDC.




Read the manuals how to connect them:
http://cnc4pc.com/Tech_Docs/C6R6%20and%20Huanyang.pdf

as an answer to your question from the manual:
Make sure the grounds of the analog circuit are keep
isolated from the logic (+5vdc). Use a multimeter to confirm there is no
continuity between the two grounds before applying power.


Dont be in a rush.

[Noplace]

I'll be using the C6 with C35 from same site, I checked with their support and they confirmed that they work together so I assume it would work and mach3 could output the required frequency(step) signal, did I miss something? please enlighten me :D

[JAZZCNC]

I'll be using the C6 with C35 from same site, I checked with their support and they confirmed that they work together so I assume it would work and mach3 could output the required frequency(step) signal, did I miss something? please enlighten me :D

Yes they will work fine. The difference is that with a Step based spindle control you use or lose an Axis output. With PWM then you don't.

Read the manuals how to connect them:
http://cnc4pc.com/Tech_Docs/C6R6%20and%20Huanyang.pdf

This NOT a Huanyang Vfd.!! The setup is similar but the connection terminals are different names and it's not wise to presume just because they are similair labeled they actual do the same as Huanyang or any other Vfd.

Also looking at the table for VFD you provided the Analog and Digital input Logic (which is 24V not 5v) share the Same ground so maybe can't use this board.? Check with a meter to be sure but normally Analog as it's own isolated common.!

Edit: Also the Spindle 99.9% probably won't have a Ground wire. It may have 4 connections but one won't be used. Again use meter to find one that isn't which is often pin4 (look close they will have numbers)
Regards using the PE: Then take the cable shielding at the VFd end back to PE connection. Leave spindle end shield unconnected.

Some people use the 4th connection in spindle to Ground the spindle but I find it's not required if machine frame is grounded.

[Boyan Silyavski]

Hi, it was early in the morning so did not have time to write much. Like Dean said, the board will work but you loose axis.
I have no faith of China so i do the same, check all with meter. Especially the ground.

I always use contact from the VFD on the Estop chain so all stops if motor digs in material and VFD trips or if there is a trip for any other reason.Seems Y1B and Y1C in your case, check manual further.