proLIGHT 2000 Conversion to Acorn

[FKreider]

Hi Marty,

Thanks for the reply, I am just finishing up the control cabinet wiring (after bench testing everything) and the AC wiring is basically the last bit to finish up. So I haven't ran wiring from the DIN rail yet.

All of the outlets in my shop are on 20amp circuit breakers.

I would appreciate any suggestions as to where in the wiring scheme to add any fuses or breakers.

[martyscncgarage]

Hi Marty,

Thanks for the reply, I am just finishing up the control cabinet wiring (after bench testing everything) and the AC wiring is basically the last bit to finish up. So I haven't ran wiring from the DIN rail yet.

All of the outlets in my shop are on 20amp circuit breakers.

I would appreciate any suggestions as to where in the wiring scheme to add any fuses or breakers.

You suggested you were done but did not add a disconnect (On/Off) switch. You would fuse the incoming line to the control cabinet. That fuse size is based on your load. Further, you wiring size needs to be rated to that fuse size. I do not know the details of your build. So I can't give you specifics.

Look at the Acorn system schematic for ideas.

[FKreider]

Ok... still trying to finish wiring my electronics, 6 month old baby at home has been a major distraction!

Now that its been a while since I looked at the schematics I am struggling with the Acorn to BOSS15 spindle controller wiring, thought I had it figured out but I'm scratching my head now.

I put together this quick schematic, can anyone tell me if I am on the right track and help "fill in the blanks" ?

[martyscncgarage]

Have you tried KBSI-240D in the search box? A lot has been discussed on its use.
Franco CNC on YouTube also discussed a similar application.

[FKreider]

Hi Marty,

I think I can probably figure the KBSI portion out, I am more concerned with the relay wiring for the spindle control, does it look like I have it shown correctly?

It appears that the "common" from terminal 1 needs to loop back around to terminal 5?

The BOSS spindle manual that I posted earlier in this thread says not to use terminal 7 so I would think the KBSI output needs to go to terminal 5 and 6 but then what do I do with the "common"?

[martyscncgarage]

I found this: http://www.kbelectronics.com/data_sheets/kbsi240d.pdf
Though it shows for one of their KBIC drives, it should apply to yours.
Looks like you would use:
One Relay output for FWD/REV and assign it to VFD DIRECTION
One Relay output for Enable/Disable and assign it to VFD ENABLE
And take the Run/Brake circuit through an Estop Contactor controlled by Relay 1 and assign to NoFaultOut


Just my suggestions....

[martyscncgarage]

Looking at your BOSS manual, did you not find this on VOLTAGE FOLLOWER? This should be your answer for speed control from the KBSI-240D:

You could prove the theory with a 1.5 battery....or a DC bench power supply as the voltage source....

[martyscncgarage]

Test everything with meters before connecting your drive...

[FKreider]

I actually saw that "voltage follower" section last night but wasn't sure if it was what I was looking for- thanks for the heads up!

Will report back once I am able to wire and test.

[FKreider]

One more question- so its clear that the (-) output from the KBSI goes into terminal 1 on the spindle controller however does this also become the "common" the manual tells you to short through the relays for each function? (FWD/REV - Enable/Disable - Run/Brake)