Search found 24 matches

by JRD56
Wed Sep 27, 2023 6:48 am
Forum: Centroid Acorn CNC Controller
Topic: Cutter Comp Tutrial question - Typo?
Replies: 7
Views: 1295

Re: Cutter Comp Tutrial question - Typo?

Thanks for the help, I didn't mean to create work for you. I don't really have an icn file yet. I'm just now getting my shop made cnc mill running and was preparing to make my first part, which is a part for a power draw bar I'm adding. As I was programming it in Intercon, I was struggling with the ...
by JRD56
Mon Sep 25, 2023 7:28 am
Forum: Centroid Acorn CNC Controller
Topic: Cutter Comp Tutrial question - Typo?
Replies: 7
Views: 1295

Cutter Comp Tutrial question - Typo?

Hello, I was reading thru Tutorial #2 in the Mill Operators Manual (Draft July 27, 2023) and have a question about using Depth Repeat with Cutter Comp. I think there may be some typo's. At the bottom of page 192 it says "The outer contour begins with the Plunge operation in N0011 and ends with ...
by JRD56
Thu Jun 08, 2023 8:50 am
Forum: Centroid Acorn CNC Controller
Topic: Any success with CNC4PC C89 ?
Replies: 7
Views: 687

Re: Any success with CNC4PC C89 ?

Well its been over a week since I’ve heard from CNC4PC. They have not returned phone calls or emails, what a shame. I don’t typically do reviews on companies but I would not recommend them to anyone based on my experience. I got tired of wating so I developed my own interface using an ESP32 micro co...
by JRD56
Tue Jun 06, 2023 3:42 pm
Forum: Centroid Acorn CNC Controller
Topic: Any success with CNC4PC C89 ?
Replies: 7
Views: 687

Re: Any success with CNC4PC C89 ?

Thanks, I'm familiar with both documents suntravel posted above. I wanted to use the PWM for better resolution and reduce the chance of electrical noise on the analog signal. And yes I did isolate output 2 on the relay board. I'm a retired EE with many years of experience working on commercial CNC's...
by JRD56
Tue Jun 06, 2023 8:48 am
Forum: Centroid Acorn CNC Controller
Topic: Any success with CNC4PC C89 ?
Replies: 7
Views: 687

Re: Any success with CNC4PC C89 ?

Thanks. I’ve tried working with CNC4pc for almost 3 weeks now but they’ve been unable to provide a solution. I’ve sent them detailed information about the wiring, jumpers and screen shots of the scope. I really don’t know if I simply have a bad board or is it a bad design. When I asked for a refund ...
by JRD56
Mon Jun 05, 2023 5:02 pm
Forum: Centroid Acorn CNC Controller
Topic: Any success with CNC4PC C89 ?
Replies: 7
Views: 687

Any success with CNC4PC C89 ?

I purchased a CNC4PC C89 board to interface the Acorn to a Spindle Drive that requires a +/- 10 volt analog signal. The C89 is supposed to accept the spindle PWM signal from Acorn and convert it to a 0 to 10 volt analog voltage and change polarity by providing it with the VFD Direction signal. But i...
by JRD56
Wed Apr 26, 2023 8:27 pm
Forum: Centroid Acorn CNC Controller
Topic: PWM Duty Cycle
Replies: 2
Views: 408

Re: PWM Duty Cycle

Thanks, that is what I was expecting but I could only get 50% (as measured by an oscilloscope). However, I had the spindle analog out set to 0-5v which apparently was clamping the PWM at 50%. After changing the analog to 0 to 10v I'm getting the 100% duty cycle. All is good now.
by JRD56
Mon Apr 24, 2023 10:44 am
Forum: Centroid Acorn CNC Controller
Topic: PWM Duty Cycle
Replies: 2
Views: 408

PWM Duty Cycle

Hello,
I want to use the PWM output as speed reference to a spindle drive on a mill. Does anyone know what the what the duty cycle is at max speed?

Thanks
Jim
by JRD56
Tue Apr 04, 2023 8:26 am
Forum: Centroid Acorn CNC Controller
Topic: 120vac Estop Circuit ok?
Replies: 3
Views: 358

Re: 120vac Estop Circuit ok?

Thanks, guess I should have looked at the relays first.
by JRD56
Tue Apr 04, 2023 7:07 am
Forum: Centroid Acorn CNC Controller
Topic: 120vac Estop Circuit ok?
Replies: 3
Views: 358

120vac Estop Circuit ok?

I'm designing the electrical system for a shop made CNC mill. I have a contactor with a 120vac coil I'd like to use for the Estop circuit. I'll be using an estop pushbutton with two NC contacts, one will go to input 8 and ground. I'd like to use the other contact to go thru output 1 on the relay car...