Hello Guest it is May 21, 2019, 07:46:22 PM

Author Topic: setting up coolant pins  (Read 3528 times)

0 Members and 1 Guest are viewing this topic.

Offline MarkC

*
  •  94 94
    • View Profile
setting up coolant pins
« on: September 21, 2006, 09:25:32 PM »
I'm having trouble setting up Mach 3(V 1.9.070) for my mist coolant. I'm using a Hobby CNC board and CNC4PC AC relay card. If I connect from the 5VDC pad on the Hobby CNC board it will work. I get pin 16 to switch on & off & get 4.4 volts there. My CNC4PC DC card for my spindle works at that voltage. I've tried different pins, switching active high/low and can't get it to work. Anybody got any ideas?

Thanks
Mark
Mark
Re: setting up coolant pins
« Reply #1 on: September 21, 2006, 10:10:35 PM »
So are you seeing the pin change state ? If not what are the settings that you are using on the pin.
Thanks
Fixing problems one post at a time ;)

www.newfangledsolutions.com
www.machsupport.com

Offline MarkC

*
  •  94 94
    • View Profile
Re: setting up coolant pins
« Reply #2 on: September 22, 2006, 09:08:43 PM »
Hi Brian,
My settings are Output 3, port 1, pin 17 & active high. I've also got the coolant set to output 3 on the spindle settings page. The LED  for pin 17 on the diagnostics page turns off and on & the wierd part is, I get 4.4 volts at pin 17, but it won't trigger the relay. The relay is good, it will trigger at 3VDC by hooking up 2 D cells.
I'm really confused, I've spent about 6 hours over the last week and no luck
Thank you for any ideas you might have

Mark
Mark

Offline MarkC

*
  •  94 94
    • View Profile
Re: setting up coolant pins
« Reply #3 on: September 23, 2006, 05:53:17 PM »
Anyone????
I'm wondering if I need a pullup resistor. The thing I don't get is why does it work on 3vdc from a battery but not 4.4 from the Hobby CNC board

 ???
Mark
Re: setting up coolant pins
« Reply #4 on: September 24, 2006, 04:06:48 PM »
Yup you need a pull up resistor.. you could look into getting a new SSR that would use a few less mA.   I think there are a few webpages that tell how to setup a pull up resistor.
Fixing problems one post at a time ;)

www.newfangledsolutions.com
www.machsupport.com

Offline MarkC

*
  •  94 94
    • View Profile
Re: setting up coolant pins
« Reply #5 on: September 24, 2006, 04:21:50 PM »
Cool!
Thanks Brian
I'll give it a try

Mark
Mark