Time Based Heating

JRCL

I have a higher voltage heating element that is being controlled by a SSR. I have successfully set it up as tool and chamber before when I was playing around with it but I'm not sure the best way to categorize it as I hope to raise it to a temperature then have it hold at that temperature for prescribed amount of time. Recommendations on best way to go about this? Cheers and Happy Friday

Phaedrux

Is this for a chamber heater?

JRCL

@phaedrux Not necessarily. Its being used in a thermoforming process to heat up the forming sheet so it could go either way.

OwenD

@jrcl
It depends on whether the machine needs to be active and doing something during the heating period.

If it's not then a simple G4 command would suffice between the commands to turn on/off the heater

If it does then you need to create/update a global variable and use daemon.g to monitor the elapsed time.

if !exists(global.offTime)
   global offTime = state.time + (your delay time)

Then in daemon.g use

if exists(global.offTime)
   if (global.offTime > state.Time)
      "Code to turn off heaters here"

You will need extra code to check if heating is on progress and it's above a certain temp as daemon.g will be running all the time.
This is just a framework.

JRCL

@owend That G4 should do it! Everything else remains idle. Thank you!