another spurious heater issue
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@deckingman said in another spurious heater issue:
@cncmaker You haven't necessarily messed anything up. If you've done the PID tuning and correctly entered the results in your config.g, then it might just be that the heater is overpowered for the heater block. PID control can only do so much. I have very little information to go on except your original post where you stated that there was a fault message triggered by the heater reaching 135 when the set point was 120. Coupled with what seems to be a rapid rise time in the graph you posted, indicates that it might be a temperature overshoot. What is the power of the cartridge and are you sure it's the correct voltage for your machine?
You don't have an M570 in your config.g so default values would apply. You could use M570 to provide wider fault tolerance (say 25 Deg for 20 secs), but be aware that if you get a genuine fault, bad things might happen.
So I'm just about to determine the thermistor by measuring the R at 25C and then 100c, change it over to Kelvin then some division I believe and confirm the thermistor for sure.
So its a micro Swiss hotend with a 40w cartridge. This is mostly a conversion on a working tevo tornado that I've already done a bunch of upgrades to.
Thank you for the m570 idea though I can at least make the machine work now
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@cncmaker just double checking, you aren't using a 12V heater in a 24V system? else you'll actually have a 160W heater and bad things may happen...
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@engikeneer said in another spurious heater issue:
@cncmaker just double checking, you aren't using a 12V heater in a 24V system? else you'll actually have a 160W heater and bad things may happen...
I wish thats what it was. I measured the resistance it came out to 14.8r so thats a 24v cartridge
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Can you post your config-override.g file? Maybe you're loading some old tuning values that are over writing the values you've copied into config.g
Did the PID tuning for the hotend heater go alright?
That rapid of a heatup sure seems like a 12v heater on a 24v system. Do you have another cartridge to test with?
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@phaedrux sorry for the late reply I had to go away for a little while.
config-override.g
The cartridge had 24v printed on it and the measured resistance of the cartridge was 14.7. On top of that the cartridge works with marlin. I will still try another cartridge as I have many. -
Config-override.g
M307 H1 R3.052 K4.617:0.786 D4.61 E1.35 S1.00 B0 V24.1Config.g
M307 H1 R3.087 K0.572:0.000 D3.68 E1.35 S1.00 B0 V24.1Is that perhaps the difference between you tuning it as a tool, versus tuning it as a simple heater?
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@phaedrux
So I went into the override file and it says dont modify or delete lines or whatever. So I took the tuning values from the config file and pasted them in. This worked.I always wondered why it showed as a tool so what did i do wrong and what can i do to fix it?
Thanks alot
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the values in config-override.g are written there when you send M500. Which you would normally do after tuning completes.
What command did you use to start the tuning?
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@phaedrux m303 h1 s240 or something like that. I cant seem to see a history of my commands in dwc.
I dont know if i should start a new thread but id like to ask you about another issue im having.
I followed this link to connect a 12864 display I used this menu system suggested in the above link.
I tried updating thru dwc all it did was put the folder on the system. I seen that the files are suppose to be in a menu folder which i created and added the files to it. Im using a reprap full graphics display which is a 12864. I dont get any sort of menu on the display. -
@cncmaker said in another spurious heater issue:
m303 h1 s240
That's for tuning as a heater. M303 T0 S240 would tune it as a tool including the cooling fan.
@cncmaker said in another spurious heater issue:
I dont know if i should start a new thread but id like to ask you about another issue im having.
Yes best to create a new thread.
