Centroid Community CNC Support Forum

martyscncgarage wrote: ↑Sun May 23, 2021 6:37 pm [

Make/model of sensor, data sheet?

That's a tough one...this was most likely an original item for my 1991 Tree J325. I don't find any info from the Tree drawings, I had been running it off a break-out board that supplied 12Vdc and looking back at my notes it required a pull-up resistor...it is a cylindrical unit and is of the PNP variety. It triggers off a bolt at each end of the stroke. I'd guess it's an inductive sensor about 0.320 dia less than an inch long. I would also guess it's NC...

lavrgs wrote: ↑Sun May 23, 2021 9:25 pm

martyscncgarage wrote: ↑Sun May 23, 2021 6:37 pm [

Make/model of sensor, data sheet?

That's a tough one...this was most likely an original item for my 1991 Tree J325. I don't find any info from the Tree drawings, I had been running it off a break-out board that supplied 12Vdc and looking back at my notes it required a pull-up resistor...it is a cylindrical unit and is of the PNP variety. It triggers off a bolt at each end of the stroke. I'd guess it's an inductive sensor about 0.320 dia less than an inch long.

NPN sensors are required for Acorn. They must sink the Acorn input. I would replace the sensor with a new 24vdc NPN sensor.

Marty

martyscncgarage wrote: ↑Sun May 23, 2021 9:27 pm
NPN sensors are required for Acorn. They must sink the Acorn input. I would replace the sensor with a new 24vdc NPN sensor.

Marty

It would be good to start with something new that is designed to work with the system - Normally Closed or Open??? My 0.32 measurements is close to 8mm.
Do you have a preferred unit? otherwise I will se what Automation Direct has to offer

Yes, NPN NC. Automation direct has a good selection.

I started by asking if it is possible to have mechanical limit switches and proximity sensors on the same input. If not I assume that three proximity sensors can use a single input...maybe? At this point I'm not crowding my inputs but being able stay with eight would be my first choice.
If I use three for Home I still have some room but my optional items get blown out
1. X HOME/LIMIT Try to combine 1-2-3
2. Y HOME/LIMIT
3. Z AXIS HOME/LIMIT
4. Drive OK LEAVE ON #4
5. Low Lube
6. Probe Detect
7. Probe Signal
8. E-STOP LEAVE ON #8
OPTIONAL Cycle start, feed hold, Spindle on/off, mist, tool check

I now have FWD/REV relays connected to output 4 & 5 and set up in the Wizard. I want to turn each one on from the VCP but I need to fool it into thinking there is a motor. It that possible? I can actuate the external relays with Cntr/ALT F

Just go into MDI
Type
M3 forward
M4 reverse
M5 off

One item I haven't purchased yet is fans for the cabinet. What is the wisdom on voltage? There is one fan currently and I believe (It's not connected 8-(...) it's 120 VAC. I was considering using 12VDC fans.
I'd also like to get a mounting system for the Acorn board and am looking at Winford items http://www.winford.com/products/cad/din ... 23_dwg.pdf and use a sheet metal plate

lavrgs wrote: ↑Mon May 24, 2021 2:28 pm One item I haven't purchased yet is fans for the cabinet. What is the wisdom on voltage? There is one fan currently and I believe (It's not connected 8-(...) it's 120 VAC. I was considering using 12VDC fans.

I'd by a fan based on the machine's line voltage. If you have 120VAC, buy 120vac fans. Any low voltage fans will require a power supply

martyscncgarage wrote: ↑Mon May 24, 2021 2:32 pm

lavrgs wrote: ↑Mon May 24, 2021 2:28 pm One item I haven't purchased yet is fans for the cabinet. What is the wisdom on voltage? There is one fan currently and I believe (It's not connected 8-(...) it's 120 VAC. I was considering using 12VDC fans.

I'd by a fan based on the machine's line voltage. If you have 120VAC, buy 120vac fans. Any low voltage fans will require a power supply

I should have mentioned I have a 12 Volt power supply...and 220VAC fans are ...well we don't wann a go there 9-)