Machsupport Forum

Mach Discussion => FAQs => Topic started by: Quin on June 10, 2012, 11:33:20 PM

Title: Coolant On at start up
Post by: Quin on June 10, 2012, 11:33:20 PM

when I initially start Mach3 and X home or Z home limit is made (2 axis machine), both mist and flood coolant comes on??

Quin

Title: Re: Coolant On at start up
Post by: Tweakie.CNC on June 11, 2012, 03:07:08 AM

Hi Quin,

It is usual to have Mach turn off all outputs (as a safety precaution) when a stop is encountered. Perhaps changing the active state (High / Low) of the outputs you use for these functions may be the way forward (reconfiguring the logic switching of the connected devices).

Tweakie.

Title: Re: Coolant On at start up
Post by: Quin on June 11, 2012, 10:00:13 PM

Thanks Tweakie,

Further details on the problem:

I load Mach3.  If either X home or Z home limit is active, the flood and mist are energized after about a 2 sec delay.  They can only be turned off by moving the X or Z on to the overtravel limit.  When I come off the overtravel, they come back on. when I come off either home limit they stop.  If I cycle the overtravel a couple of times, the problem clears and I can run a program normally with out further problem.

If I shut down Mach3 and restart,  the problem returns.

Is this possibly a known bug in Mach3?

Title: Re: Coolant On at start up
Post by: BR549 on June 11, 2012, 10:06:44 PM

I think you may have the coolant setup with the same ports/ pins as the limits or homes. Check your config.

Just a thought(;-) TP