which if any of the DSP output can be used to turn airassist

[Techgraphix]

oeps.. I overlooked your type of controller..
the 608 doesn't have an OUT6.
I think you have to place a switch to override the signal to the air-assist pump or valve and separate the engraving and cuttingfiles..
Kees

[waltfl]

hi kees
how can I do this?
greetings
waltfl
you can email me on my PM

oeps.. I overlooked your type of controller..
the 608 doesn't have an OUT6.
I think you have to place a switch to override the signal to the air-assist pump or valve and separate the engraving and cuttingfiles..
Kees

[Techgraphix]

I can PM you but I want others to read it too.. Somebody else may want to use it too..
What I thought is that the OUT1 of the 608 went low during the job, right? (My X7 goes high and I have an inverter placed, that's why I think it will go low.)
It can be you drive a Solid State Relay with it. This SSR will turn on and off your AirAssistPump, yes?
If you place a normal open/close switch in series with the wire from OUT1 to the SSR you can intermit it that way. Under normal conditions the OUT1 will pull the kathode(-) of the LED inside the SSR to ground. This LED will light up and the SSR will conduct so the pump will start running.
With a OPEN switch in that wire, the OUT1 will go to GND-level but it won't be able to pull the Kathode(-) of the SSR to GND as the wire is "broken".. The SSR will stay OFF.. = No Pump = no Air..
When you close the switch AND OUT1 = low (GND-level), your pump will start again.

Kees

[turkletom]

Hey kees, this is what you're talking about, right?

When the DSP is on but no job is running both OUT1 and DC24V are outputting 24V (relative to GND).
The diode in the SSR experiences no potential difference as if there was no voltage on it at all.
When a job starts and OUT1 goes to GND you get 24V across the diode and it spring to action turning on the load.

BTW you can go full on couch potato mode by using OUT1 to turn the exhaust system on and off. With this little programmable relay timer from ebay
http://www.ebay.com/itm/12V-Home-Automa ... 0899436008,
it's possible to keep the exhaust running for a few seconds after the job finishes to let the smoke clear out.

This is definitively my next project. I hate to constantly run back and forth between the office and the shop because the machine is done but the exhaust is still running.

[Techgraphix]

This, with the switch is exactly what I meant.
As I have a X7, I don't need an extra delay, as it is already in the X7.. But I don't use it. The runout of the ventilation is more than enough to draw all the smoke and gasses from the cabinet (if there was already any left after the job..)

Kees

[turkletom]

Yeah, you're right I totally forgot there's a delay setting.
I work with a rather big 250x130 cm machine and it definitely needs like 15 seconds to evacuate the smoke.
1700m3/h is not enough airflow, apparently.