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MINTEMP triggered

Posted by foul_owl

foul_owl

MINTEMP triggered
June 19, 2014 08:36PM

Registered: 10 years ago
Posts: 197

Hi folks,

My printer has been running great for the past few weeks. Today I started to get printer shutoffs. The log tells me "MINTEMP" triggered. However, the thermistors are working perfectly. The data shows up in the graphs in pronterface just fine.

Not sure where else to look now.

Thanks!

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DaveX

Re: MINTEMP triggered
June 19, 2014 09:05PM

Registered: 12 years ago
Posts: 258

MINTEMP happens with high resistance on thermistors, so maybe you are having an intermittent open-circuit on your thermistor somewhere.

Pronterface only polls every second or so, so it could miss a quick open circuit / infinite resistance / MINTEMP.

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cnc dick

Re: MINTEMP triggered
June 19, 2014 09:41PM

Registered: 11 years ago
Posts: 474

Yes sounds like a bad connection could be heat bed or hot end thermistor

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foul_owl

Re: MINTEMP triggered
June 24, 2014 06:27PM

Registered: 10 years ago
Posts: 197

Is there a way to poll the thermistor every 0.1 second or so? I would like to see a quickly updating graph while I jiggle the thermistors around and see if I can get them to go open.

Thanks!

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RobA

Re: MINTEMP triggered
July 02, 2014 03:44PM

Registered: 12 years ago
Posts: 81

I was having an intermittent MINTEMP triggered error as well. Turned out to be cross-talk from the extruder stepper wiring and the thermistor, which I was able to see by putting a scope on the input to the board, I replaced the thermistor wire with sheilded twisted pair and have never had the problem again,.

-Rob A>