Firmware Update request - Safety Cutoff on Thermistor Failure July 12, 2015 08:54AM |
Registered: 9 years ago Posts: 24 |
Re: Firmware Update request - Safety Cutoff on Thermistor Failure July 12, 2015 10:19AM |
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Re: Firmware Update request - Safety Cutoff on Thermistor Failure July 12, 2015 11:40AM |
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Re: Firmware Update request - Safety Cutoff on Thermistor Failure July 12, 2015 12:18PM |
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Re: Firmware Update request - Safety Cutoff on Thermistor Failure July 12, 2015 12:40PM |
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Re: Firmware Update request - Safety Cutoff on Thermistor Failure July 13, 2015 06:24AM |
Registered: 9 years ago Posts: 24 |
Quote
Treito
Strange, in my case the Extruder heating was turned off with an Error and this I saw already sometimes ago as I used the firmware from DC42. So what is the difference? Okay a shortcut would be one possibility.
So the emergency shutdown could happen if the temperature changes quite fast to catch up a shortcut for example.
What kind of wiring do you use?
Re: Firmware Update request - Safety Cutoff on Thermistor Failure July 13, 2015 06:33AM |
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Re: Firmware Update request - Safety Cutoff on Thermistor Failure July 13, 2015 07:14AM |
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Re: Firmware Update request - Safety Cutoff on Thermistor Failure July 13, 2015 07:22AM |
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Re: Firmware Update request - Safety Cutoff on Thermistor Failure July 14, 2015 07:30AM |
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Re: Firmware Update request - Safety Cutoff on Thermistor Failure July 14, 2015 07:34AM |
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Re: Firmware Update request - Safety Cutoff on Thermistor Failure July 14, 2015 08:04AM |
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Re: Firmware Update request - Safety Cutoff on Thermistor Failure July 17, 2015 04:40AM |
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Re: Firmware Update request - Safety Cutoff on Thermistor Failure July 17, 2015 05:14AM |
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Re: Firmware Update request - Safety Cutoff on Thermistor Failure July 17, 2015 06:36AM |
Registered: 10 years ago Posts: 14,672 |
Quote
Crouchy
I have done some more testing with this problem.
I heated the nozzle up and then set the temp to zero before I started so it would not overheat.
When I disconnected one wire of the thermistor the temperature actually dropped to toggle between -4.8, -3.8 and -2.9 degrees. The dc42 probe's LED cycled through off, bright and dim, possibly in time with the temperature reading changes, until I reconnected the thermistor, so it appears to have detected the fault, but has not set the temperature to -273.
There's a video onthe link below That shows what happens, you can see the LED changes and temperature readings. The two gaps in the temperature graph correspond to thermistor disconnection.
[www.dropbox.com]
Re: Firmware Update request - Safety Cutoff on Thermistor Failure July 21, 2015 08:39AM |
Registered: 9 years ago Posts: 24 |
Re: Firmware Update request - Safety Cutoff on Thermistor Failure July 21, 2015 09:04AM |
Registered: 9 years ago Posts: 1,699 |
Re: Firmware Update request - Safety Cutoff on Thermistor Failure July 21, 2015 04:11PM |
Registered: 10 years ago Posts: 14,672 |
Re: Firmware Update request - Safety Cutoff on Thermistor Failure August 02, 2015 05:22AM |
Registered: 9 years ago Posts: 24 |