Centroid Community CNC Support Forum

https://www.kbelectronics.com/data_sheets/kbsi240d.pdf

That is the link to the KBSI-240D

Dave C.

Ok, sound good. I looked up your PM-30 manual and the spindle speed was controlled with a 3 wire setup and used a knob on the front panel to control the speed. So unless the PM-30 spindle controller has a jumper to change it from this 3 wire speed control to a 2 wire 0-5vdc speed control, trying to ...

As to your first question.....I don't know. Ok, you need to look at the PM manual and see if you can find this out! IN the meantime, don't hook the Acorn output directly to the PM until you know for sure what the PM wants for an input. It may or may not damage the Acorn board output but let's be su...

Ok, that helps! I looked at the wiring diagram. Some of the lines, the commons for example, are easy to miss but it looks ok from what I can see. Does the PM take a 0-5 vdc input or is it wanting 4-20Ma signal? If the PM will take a 0-5vdc signal then take out the KBSI and change the Acorn wizard to...

Ok, this is not going anywhere fast because we can't get good feedback on the test we ask for. So one more time: Disconnect the KSBI board from Acorn and run these test, record the results! Using MDI, enter M3 S300 (minimum speed) and read the DC voltage at the acorn output! It should be 0 VDC! Usin...

There was no program loaded when I took the picture. It would just work that way with MDI, or to run it manually with the pendant. Try this since you say you are in MDI: In MDI type each one of these commands and record the results. M3 S1500 and what does it read on the encoder readout and take a v...

My last question was how, if the Wizard is set to understand that the spindle will turn 3000 RPM, does CNC12 only show (in the original post's attached photo) that it thinks the machine will max out at 1500 RPM? I'm not in the shop but I think the 100% you see in the second picture is what the manu...

The KBSI just converts the 10V Acorn signal to 5V that the Precision Matthews can accept. I'm confused as to why the Wizard is set to 3000RPM at max spindle output, while CNC12 still clearly shows that 1500 RPM equal 100% output. Thoughts? So are you saying that the PM machine spindle drive takes 0...

I am running the Acorn analog output through a KBSI 240D board to provide the PM Spindle Controller with signal. There appears to be a 2.2:1 to 2.4:1 ratio in RPM. For Example: Ok, the 0-10vdc output from Acorn and your settings in the wizard seem to be set right. What is the KBSI doing with that s...

The free version of Fusion 360 is cool however for programming parts the free version only lets you post one toolpath at a time. Please tell me I'm wrong...I'm guessing you can post multiple toolpaths from the same part but they won't be in one file. If you mean can you post tool paths for differen...