Hotend faulting

Veti

ok lets check the mosfet.

check that there is 5V between the MOSFET gate and source pins when the heater is turned on, and 0V when off.

larabe

@Veti
I will give it a try.

larabe

@Veti
I only get 0's.

Veti

@larabe said in Hotend faulting:

only get 0's.

i think that means the mosfet has failed. but post your config.g to rule out a misconfiguration.

larabe

@Veti

; Configuration file for Duet WiFi (firmware version 2.03)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v2.0.4 on Wed Oct 16 2019 09:01:29 GMT-0400 (Eastern Daylight Time)

; General preferences
G90 ; send absolute coordinates...
M83 ; ...but relative extruder moves
M550 P"My Printer" ; set printer name

; Network
M552 S1 ; enable network
M586 P0 S1 ; enable HTTP
M586 P1 S0 ; disable FTP
M586 P2 S0 ; disable Telnet

; Drives
M569 P0 S1 ; physical drive 0 goes forwards
M569 P2 S1 ; physical drive 2 goes forwards
M569 P1 S1 ; physical drive 1 goes forwards
M569 P3 S1 ; physical drive 3 goes forwards
M584 X0 Y2 Z1 E3 ; set drive mapping
M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation
M92 X80.00 Y80.00 Z4000.00 E420.00 ; set steps per mm
M566 X900.00 Y900.00 Z12.00 E120.00 ; set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z180.00 E1200.00 ; set maximum speeds (mm/min)
M201 X500.00 Y500.00 Z20.00 E250.00 ; set accelerations (mm/s^2)
M906 X800 Y800 Z800 E800 I30 ; set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout

; Axis Limits
M208 X0 Y0 Z0 S1 ; set axis minima
M208 X300 Y300 Z375 S0 ; set axis maxima

; Endstops
M574 X1 Y1 Z2 S0 ; set active low and disabled endstops

; Z-Probe
M558 P0 H5 F120 T6000 ; disable Z probe but set dive height, probe speed and travel speed
M557 X15:215 Y15:195 S20 ; define mesh grid

; Heaters
M305 P0 T100000 B4138 R4700 ; set thermistor + ADC parameters for heater 0
M143 H0 S120 ; set temperature limit for heater 0 to 120C
M305 P1 T100000 B4138 R4700 ; set thermistor + ADC parameters for heater 1
M143 H1 S280 ; set temperature limit for heater 1 to 280C

; Fans
M106 P0 S0 I0 F500 H-1 ; set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
M106 P1 S1 I0 F500 H1 T45 ; set fan 1 value, PWM signal inversion and frequAency. Thermostatic control is turned on

; Tools
M563 P1 S"EXTRUDER" D0 H1 F0 ; define tool 1
G10 P1 X0 Y0 Z0 ; set tool 1 axis offsets
G10 P1 R0 S0 ; set initial tool 1 active and standby temperatures to 0C

; Custom settings are not defined

Veti

M305 P0 T100000 B4138 R4700 ; set thermistor + ADC parameters for heater 0
M305 P1 T100000 B4138 R4700 ; set thermistor + ADC parameters for heater 1

B4138 is the default and most likely wrong for your thermistor

M563 P0 D0 H1 F0 ; define tool 0

you are configuring heater 1 but connected the wires to heater 2.

larabe

@Veti
Had tried using heater 2, but went back to heater 1. Will check thermistor settings, but these settings were from the configuration tool.

Veti

@larabe said in Hotend faulting:

. Will check thermistor settings, but these settings were from the configuration tool.

yes but you have to enter the correct ones yourself. B4138 is the default value.
the configuration tool had no way of knowing which thermistor is on your printer.

another check. you are selecting tool 0 using gcode T0 before doing any tests?

larabe

@Veti
apparently the B value should be 3950. will try this and retest.
Thankyou.

Veti

@larabe said in Hotend faulting:

apparently the B value should be 3950. will try this and retest.
Thankyou.

that was a side note. a wrong value will just result in the wrong temperature of the thermistors.

larabe

@Veti
ok so this doesn't resolve the 0 power to heaters.

elmoret

@larabe please answer the question above, posed again here:

you are selecting tool 0 using gcode T0 before doing any tests?

Please also post a screenshot of Duet Web Control, so we can see the terminal/console, where you enter T0, and the fault condition.

larabe

@elmoret
The wifi does not function on this board, so i am unable to use web control. Tool selection was set up in the configuration tool.

larabe

@elmoret
Also I am using usb connection with simplify 3d software.

Veti

@larabe said in Hotend faulting:

Also I am using usb connection with simplify 3d software.

what have you done to counter the grounding loop that you are creating?
https://duet3d.dozuki.com/Wiki/USB_ground_loops

elmoret

@larabe said in Hotend faulting:

@elmoret
The wifi does not function on this board, so i am unable to use web control. Tool selection was set up in the configuration tool.

You stated: “please note everything on the board works except the extruders.”

It will be difficult to help you without accurate information about things.

You still have not answered the question about T0.

larabe

@Veti
I use a usb cable with a ferrite ring on it.

Veti

@larabe said in Hotend faulting:

I use a usb cable with a ferrite ring on it.

ferrite bead are for reducing high frequency noise, it has no effect on a grounding loop.

larabe

@elmoret
Tim
as i answered to verti sorry I meant heaters E0 and E1. T0 was set up in the configuration tool.

thank you very much as accurate as i can be.

Veti

@larabe said in Hotend faulting:

T0 was set up in the configuration tool.

this is not reflected in your config

Solved Hotend faulting