Tool Board Heater Tuning Leading To Faults

Dougal1957

@fcwilt said in Tool Board Heater Tuning Leading To Faults:

@dougal1957 said in Tool Board Heater Tuning Leading To Faults:

M308 S2 P"21.temp0" Y"pt1000" T100000 B4725 C7.06e-8 A"Ex1"
M308 S3 P"22.temp0" Y"pt1000" T100000 B4725 C7.06e-8 A"Ex2"
M308 S4 P"23.temp0" Y"pt1000" T100000 B4725 C7.06e-8 A"Ex3"

Not sure if these lines are wrong or not for one you have the T B C and A params not sure if they are needed or correct for a PT1000

From the docs:

Additional parameters for PT1000 sensors

Rnnn Series resistor value. Leave blank to use the default for your board.
Lnnn ADC low offset correction, default 0 (ignored if the hardware supports automatic ADC gain and offset calibration)
Hnnn ADC high offset correction, default 0 (ignored if the hardware supports automatic ADC gain and offset calibration)

yes but the T100000 is for a ntc100k thermistor should not be required for a pt1000 nor a beta value as they are linear and don't have a c param either so not sure if having those params are confusing the issue

KevinMar

@fcwilt s

Rnnn Series resistor value. Leave blank to use the default for your board.
Lnnn ADC low offset correction, default 0 (ignored if the hardware supports automatic ADC gain and offset calibration)
Hnnn ADC high offset correction, default 0 (ignored if the hardware supports automatic ADC gain and offset calibration)

So Lnnn can offset the higher ambient reading?

KevinMar

@fcwilt I'm currently re-running the autotuning with the removed T, B, and C values from the config

Dougal1957

@kevinmar said in Tool Board Heater Tuning Leading To Faults:

@fcwilt I'm currently re-running the autotuning with the removed T, B, and C values from the config

Good luck Kevin

Doug

DIY-O-Sphere

@kevinmar
Put in the R value

fcwilt

@dougal1957 said in Tool Board Heater Tuning Leading To Faults:

yes but the T100000 is for a ntc100k thermistor should not be required for a pt1000 nor a beta value as they are linear and don't have a c param either so not sure if having those params are confusing the issue

I was trying to point out that R, L and N are the only additional parameters for PT1000 devices.

The B,C and T are clearly incorrect but are the affecting the heater or are they ignored since they don't apply?

I don't know.

Frederick

Dougal1957

@diy-o-sphere said in Tool Board Heater Tuning Leading To Faults:

@kevinmar
Put in the R value

doesn't need it as it will default correctly

Dougal1957

@fcwilt said in Tool Board Heater Tuning Leading To Faults:

@dougal1957 said in Tool Board Heater Tuning Leading To Faults:

yes but the T100000 is for a ntc100k thermistor should not be required for a pt1000 nor a beta value as they are linear and don't have a c param either so not sure if having those params are confusing the issue

I was trying to point out that R, L and N are the only additional parameters for PT1000 devices.

The B,C and T are clearly incorrect but are the affecting the heater or are they ignored since they don't apply?

I don't know.

Frederick

I agree neither do I know but it has to be worth a try

fcwilt

@kevinmar said in Tool Board Heater Tuning Leading To Faults:

@fcwilt s

Rnnn Series resistor value. Leave blank to use the default for your board.
Lnnn ADC low offset correction, default 0 (ignored if the hardware supports automatic ADC gain and offset calibration)
Hnnn ADC high offset correction, default 0 (ignored if the hardware supports automatic ADC gain and offset calibration)

So Lnnn can offset the higher ambient reading?

I have no idea. Never used PT1000 devices.

And how does one know if the hardware supports automatic ADC gain and offset calibration?

Again I have no idea but I suspect @dc42 would.

Dougal1957

@fcwilt I do use PT1000 and 100's as well and do prefer them and don't have any need for the additional Params as yet but we will see Hopefully Kevin gets it all sorted

fcwilt

@dougal1957 said in Tool Board Heater Tuning Leading To Faults:

@fcwilt I do use PT1000 and 100's as well and do prefer them and don't have any need for the additional Params as yet but we will see Hopefully Kevin gets it all sorted

Do those devices require additional hardware to connect to a Duet board?

Frederick

Dougal1957

@fcwilt said in Tool Board Heater Tuning Leading To Faults:

@dougal1957 said in Tool Board Heater Tuning Leading To Faults:

@fcwilt I do use PT1000 and 100's as well and do prefer them and don't have any need for the additional Params as yet but we will see Hopefully Kevin gets it all sorted

Do those devices require additional hardware to connect to a Duet board?

Frederick

pt1000 no but the pt100 does need the daughter board

KevinMar

This post is deleted!

DIY-O-Sphere

@fcwilt
Not required for PT1000 on Duet3 and Maestro

Dougal1957

@diy-o-sphere said in Tool Board Heater Tuning Leading To Faults:

@fcwilt
Not required for PT1000 on Duet3 and Maestro

nor on a wifi/ethernet duet 2 board either just not quite as accurate due to the 4k7 sense resistor rather than the 2k2 one

KevinMar

@dougal1957
New parameters: M307 H2 R2.050 C309.100:130.600 D6.20 S1.00 V24.3 B0

Another fault:

(I had been using the fan to cool the hotend down, so ignore values before 11:00)

fcwilt

@kevinmar said in Tool Board Heater Tuning Leading To Faults:

@dougal1957
New parameters: M307 H2 R2.050 C309.100:130.600 D6.20 S1.00 V24.3 B0

Another fault:

(I had been using the fan to cool the hotend down, so ignore values before 11:00)

Did you check your config-override.g file to see if it included M307 commands?

Frederick

KevinMar

@fcwilt it included M307 commands that were generated from the autotuning and saved using M500

fcwilt

@kevinmar said in Tool Board Heater Tuning Leading To Faults:

@fcwilt it included M307 commands that were generated from the autotuning and saved using M500

So we can ignore the ones in your config.g file?

Frederick

KevinMar

@fcwilt They're identical