People, I solved the problem. I add a new line iin my config.g a PanelDue port: M575 P1 S1 B57600. Nos its Works fine.

@alankilian, @Phaedrux and @dc42. I solved the problem, thanks for yor tips and support.

I discovered the electronic component that was damaged, it was a 47K resistor (R80) of the voltage divider (PWR_FAIL_DET2).

I replaced the resistor with another resistor and my machine returned to normal!

@Phaedrux :
I solved my problem, I add the command M501 at the end of my config.g.

I use in my Duet2WiFi the firmware version 3, RepRapFirmware Configuration Tool v2.1.8.

I made the autotune in the BED and I add the Heater model parameters at the config-override.g.

Now it's working well, thanks for the support.
thank you for your support. I read your previous recommendations on the topic.

Hello: I t

I'm trying to update my Duet2wifi card currently using version 3.1.1. I checked that on the website it is recommended to install version 3.2.2 first. I didn't find this version available on Github, so I tried to make a new SD card using version 3.4.1 and was unsuccessful. can anybody help me?

"The location where the firmware files are stored was changed. Versions previous to RRF 3.3 stored them in the ‘0:/sys/’ directory, but from version 3.3 they are stored in the ‘0:/firmware/’ directory. When you upload the version 3.3 files in an older RRF version, they will be stored in the /sys directory. Once RRF 3.3 has been installed, subsequent firmware uploads will cause the /firmware directory to be created, and the firmware files will be stored in there."

@alankilian

@alankilian, @Phaedrux and @dc42. I solved the problem, thanks for yor tips and support.

I discovered the electronic component that was damaged, it was a 47K resistor (R80) of the voltage divider (PWR_FAIL_DET2).

I replaced the resistor with another resistor and my machine returned to normal!

@alankilian said in Attempt to move motors when VIN is not in range:

@Phaedrux Is Vin monitored through one of the POWER_FAIL_DETx inputs?
If so, he could measure the voltage at those components and see if it's strange. It's possible one of the two resistors in the divider are poorly soldered or cracked.

@alankilian , do you refer to components like resistors and capacitors connected to PWR_FAIL_DET2 R80 - 47K, R81 - 4K7 AND C79 - 10nF and PWR_FAIL_DET R15 - 47K, R16 - 4K7 AND C80 10nF?

Attached a figure showing these components in the electronic circuit. 

@Phaedrux I have an oscilloscope but I do not have acces to hot air station to replace the MCU, some components like to resistors or caps no problem to replace.

@Phaedrux said in Attempt to move motors when VIN is not in range:

Checking to see if there is any means of repair short of replacing the MCU.
When and where was the Duet purchased?

Sorry, I don't understand, do you say to replace the MCU or try to repair it without replacing the MCU?

I bought it from a friend in Brazil who referred me to the duet.
Last week I bought a Duet2Wifi clone from Makerbase in China, as I live in Brazil, the pound is very expensive for us, the cost of importing a Duet2 from England is around 364.30 pounds.
Today when I turn on the machine, the voltage shown on the DWC and detected by the board is around 2,60 volts. Yestarday was around 14 volts, but the power supply is stable at 24 volts all the time.
I also checked the 3,3 Volts line on Board, it is ok, I also Checked the 5 volts line and the results are ok.
ADVREF or VDDOUT problems? Or VDDIN or VDDCORE?
It is possible to repair Verfe components or it is necessary change the MCu....
I attached the simulation to buy a new Duet2wifi to Brazil.

HI people. The same problem, today I can not start the machine because the Vin is 9,1 volts, yesterday I printed whith 18 volts...

Anyone can help me?

@hackinistrator said in Attempt to move motors when VIN is not in range:

maybe also try connecting the board to your second 12v supply and see if the readings are also off .

The hotend / bed temps are correct, there is no variation, they remain constant as a function of time.

I changed my 24 volts power supply, and the 12 volts power supply too, the problem persists. Nothing changed.
24,3 Volts on the new 24 volts power supply and around 17 volts on DWC.

@hackinistrator Do you refered to bed thermistor and hot end thermistor? I disconnected both, the same problem, powe suplly 24 volts, DWC show me 17 volts

@hackinistrator said in Attempt to move motors when VIN is not in range:

@Milke i see only 0 to 2 connected to Vref . maybe if one of them is shorted to +24V it effects the reference .

Could you help me identify it on the board? Their number and position?