My mill is equipped with NPN proximity sensors which take 6-36 vdc. They are normally open. In my Mach3 setup I had them wired to a CNC4PC C11G BOB which required a 10K ohm resistor between the output lead from the sensor and the input terminal on the C11G BOB. In this thread: viewtopic.php?f=60&t=1286. it is recommended that an NPN proximity sensor be connected as follows. Common (V-) connected to Common, V+ connected to +24 vdc, and the output lead to an input terminal on the Acorn board.
Based on this discussion I'm assuming I can remove the resistors currently installed on the output leads correct?
I have an ATX power supply providing +12 vdc. Can I run 12 vdc to the proximity sensors or do they need to see +24 vdc because they are connected to the Acorn board?
Thanks in advance for any advice you can provide.
CJ
Wiring NPN Proximity Sensors to Acorn Board
Moderator: cnckeith
-
- Posts: 2185
- Joined: Sat Nov 18, 2017 2:32 pm
- Acorn CNC Controller: Yes
- Plasma CNC Controller: No
- AcornSix CNC Controller: Yes
- Allin1DC CNC Controller: No
- Hickory CNC Controller: No
- Oak CNC controller: No
- CNC Control System Serial Number: Acorn 238
- DC3IOB: No
- CNC12: Yes
- CNC11: No
- CPU10 or CPU7: No
- Location: Bergland, MI, USA
- Contact:
Re: Wiring NPN Proximity Sensors to Acorn Board
CJ...
You are correct. No resistors needed. I used the same on my lathe. look at 1:15 into this video: https://youtu.be/NvlBFmM2yos
https://youtu.be/NvlBFmM2yos
You are correct. No resistors needed. I used the same on my lathe. look at 1:15 into this video: https://youtu.be/NvlBFmM2yos
https://youtu.be/NvlBFmM2yos
-
- Posts: 43
- Joined: Thu Dec 21, 2017 12:50 am
- Acorn CNC Controller: Yes
- Allin1DC CNC Controller: No
- Oak CNC controller: No
- CNC Control System Serial Number: none
- DC3IOB: No
- CNC11: No
- CPU10 or CPU7: No
Re: Wiring NPN Proximity Sensors to Acorn Board
Thanks Gary. Nice video too.
CJ
CJ