Duet 3 Mini 5+ with 1LC, extruder Heater always on

Adamfilip

I have Duet 3 Mini 5+ with 1LC
I double checked wiring,,
using Revo heater 24v.

Connected to 1lC Out1. using GND and +Vout wires

extruder Heater is always on
not sure why.

M308 S1 P"121.temp0" Y"thermistor" T100000 B4267  ; Configure sensor 1 as E3D Revo thermistor on temp0
M950 H1 C"121.out1" T1                            ; Create heater 1 using temp sensor 1 and output 1
M307 H1 B0 S0.00 R2.5 C150 D5.5                   ; Disable heater (S0.00), ensure no bang-bang, and tune values as needed
M143 H1 S280                                      ; Set max temperature limit for heater 1

M563 P0 D0 H1 F0                                  ; Define tool 0, assign extruder 0, link heater 1, assign fan 0
M568 P0 S0 R0

Phaedrux

@Adamfilip said in Duet 3 Mini 5+ with 1LC, extruder Heater always on:

GND and +Vout wires

GND is not the PWM pin, and not switchable. You've just connected the heater directly to the power source. Use +VOUT and out1.

Actually, for the heater, you should be using out0, not out1.

https://docs.duet3d.com/en/Duet3D_hardware/Duet_3_family/Duet_3_Toolboard_1LC#wiring-diagram

Adamfilip

@Phaedrux Thanks I corrected that and its working fine now. appreciate your help.
now that I moved my Cold End Fan to Out2. its working alot slower then when it was using Out0
perhaps I will just wire it up to main 24v feed instead

Adamfilip

@Adamfilip just realized i can add the jumper so the fan gets 24v