Two extruders doesn't heat "together"

jay_s_uk

@the_dragonlord might be worth posting the contents of your tool change files as well

A Former User

@deckingman said in Two extruders doesn't heat "together":

@the_dragonlord Do you get a heater error?

Try this.

Send the following commands

G10 P0 S160 R200
G10 P1 S150 R190

Then send T0 and let us know what happens. This should make tool zero active and it should heat to 200 deg C.

When it has reached 200 deg C, send T1 and let us know what happens. This should make Tool 1 active and it should heat to 190. At the same time, tool 0 should cool to 150.

no, no heater error...when I'll be back home later on this afternoon I'll try what you suggested me and I'll let you know, thanks!

A Former User

@jay_s_uk said in Two extruders doesn't heat "together":

@the_dragonlord might be worth posting the contents of your tool change files as well

here they are:

tfree0.g:

; tfree0.g
; called when tool 0 is freed
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Sun Oct 25 2020 09:41:43 GMT+0100 (Ora standard dell’Europa centrale)

if {global.isPrinting==true && global.isTool0Priming==false}
	M83 ; relative extruder mode
	M201 E1500.00:1500.00 ; Set extruders acceleration
	if {move.axes[0].homed && move.axes[1].homed && move.axes[2].homed}
		G91
		G1 Z3 ; raise 3mm
		G92
		G1 E-5 F10000 ; retract 5mm
		M201 E500.00:500.00 ; Set extruders acceleration

tfree1.g:

; tfree0.g
; called when tool 0 is freed
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Sun Oct 25 2020 09:41:43 GMT+0100 (Ora standard dell’Europa centrale)

if {global.isPrinting==true && global.isTool1Priming==false}
	M83 ; relative extruder mode
	M201 E1500.00:1500.00 ; Set extruders acceleration
	if {move.axes[0].homed && move.axes[1].homed && move.axes[2].homed}
		G91
		G1 Z3 ; raise 3mm
		G92
		G1 E-5 F10000 ; retract 5mm
		M201 E500.00:500.00 ; Set extruders acceleration

tpost0.g:

; tpost0.g
; called after tool 0 has been selected
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Sun Oct 25 2020 09:41:43 GMT+0100 (Ora standard dell’Europa centrale)
; Wait for set temperatures to be reached
M116 P0

if global.isPrinting==true
	if global.isTool0Priming==false
		M83 ; relative extruder mode
		if {move.axes[0].homed && move.axes[1].homed && move.axes[2].homed}
			G1 E6.5 F500 ; undo retract
	else
		set global.isTool0Priming=false

tpost1.g:

; tpost0.g
; called after tool 0 has been selected
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Sun Oct 25 2020 09:41:43 GMT+0100 (Ora standard dell’Europa centrale)
; Wait for set temperatures to be reached
M116 P1

if global.isPrinting==true
	if global.isTool1Priming==false
		M83 ; relative extruder mode
		if {move.axes[0].homed && move.axes[1].homed && move.axes[2].homed}
			G1 E6.5 F500 ; undo retract
	else
		set global.isTool1Priming=false

in the tpre0.g and tpre1.g I've made no modifications

Before changing the cartridges this configuration of files worked....

p.s. I've copied-pasted the files xxx0.g in xxx1.g but I forgot to adjus the comments

jay_s_uk

@the_dragonlord yep, nothing obvious in those

A Former User

@jay_s_uk said in Two extruders doesn't heat "together":

@the_dragonlord yep, nothing obvious in those

have you see my video https://www.youtube.com/watch?v=2CgUXAy0Zoc ? what do you think about the LEDs blinking?

deckingman

@the_dragonlord said in Two extruders doesn't heat "together":

@jay_s_uk said in Two extruders doesn't heat "together":

@the_dragonlord yep, nothing obvious in those

have you see my video https://www.youtube.com/watch?v=2CgUXAy0Zoc ? what do you think about the LEDs blinking?

You have to be a bit careful when looking at the heater LEDs. As a general rule, the bed heater uses a PWM frequency of 10 Hz which is low enough to detect the on/off switching of the Mosfet. But the hot end heaters use a much higher PWM frequency by default, so it's impossible to visually distinguish between say fully on, or switching under PWM control. In RRF 3 you have to set the PWM frequency using the "Q" parameter in M950. If no "Q" value is present, I believe the default is 250 Hz for heaters and fans. If you used the configuration tool, it will likely have set the Q value to 10 Hz for the bed heater and not specified a Q value for the other heaters (so default would be 250 Hz).

A Former User

@deckingman said in Two extruders doesn't heat "together":

@the_dragonlord said in Two extruders doesn't heat "together":

@jay_s_uk said in Two extruders doesn't heat "together":

@the_dragonlord yep, nothing obvious in those

have you see my video https://www.youtube.com/watch?v=2CgUXAy0Zoc ? what do you think about the LEDs blinking?

You have to be a bit careful when looking at the heater LEDs. As a general rule, the bed heater uses a PWM frequency of 10 Hz which is low enough to detect the on/off switching of the Mosfet. But the hot end heaters use a much higher PWM frequency by default, so it's impossible to visually distinguish between say fully on, or switching under PWM control. In RRF 3 you have to set the PWM frequency using the "Q" parameter in M950. If no "Q" value is present, I believe the default is 250 Hz for heaters and fans. If you used the configuration tool, it will likely have set the Q value to 10 Hz for the bed heater and not specified a Q value for the other heaters (so default would be 250 Hz).

as you can see in my video the frequency is about 2-3Hz so I think that this is abnormal....when the heating works (with just a tool and the bed active) both the LEDs seems always on so the PWM (blinking) frequency is high enough to "cheat" the eyes

deckingman

@the_dragonlord said in Two extruders doesn't heat "together":

as you can see in my video the frequency is about 2-3Hz so I think that this is abnormal....

Not necessarily. But let's try to do things in a methodical and logical way, rather than speculate as to what might, or might not, be wrong. Run those commands I suggested and let us know what happens.

@jay_s_uk made a valid point about the tool change macros. Whilst there doesn't seem to be anything amiss, I would be inclined to comment out the commands in those macros. Then if we can get things working, you can add them back in.

A Former User

@deckingman said in Two extruders doesn't heat "together":

@the_dragonlord said in Two extruders doesn't heat "together":

as you can see in my video the frequency is about 2-3Hz so I think that this is abnormal....

Not necessarily. But let's try to do things in a methodical and logical way, rather than speculate as to what might, or might not, be wrong. Run those commands I suggested and let us know what happens.

@jay_s_uk made a valid point about the tool change macros. Whilst there doesn't seem to be anything amiss, I would be inclined to comment out the commands in those macros. Then if we can get things working, you can add them back in.

I will, thanks! I think that later I'll be able to do so when I'll be back home

A Former User

@deckingman said in Two extruders doesn't heat "together":

@the_dragonlord said in Two extruders doesn't heat "together":

as you can see in my video the frequency is about 2-3Hz so I think that this is abnormal....

Not necessarily. But let's try to do things in a methodical and logical way, rather than speculate as to what might, or might not, be wrong. Run those commands I suggested and let us know what happens.

@jay_s_uk made a valid point about the tool change macros. Whilst there doesn't seem to be anything amiss, I would be inclined to comment out the commands in those macros. Then if we can get things working, you can add them back in.

I've put back the old cartridges and now it seems all solved....i have no words....

Phaedrux

@the_dragonlord said in Two extruders doesn't heat "together":

i have no words.

How about incredulous?

I'm as confused as you are.

Dougal1957

@phaedrux could this be due to a different PID tune at all I wouldn't expect it but who the hell knows

gloomyandy

@dougal1957 Might be worth measuring the resistance of the old/new cartridges? Maybe the new ones are drawing more current than they are supposed to?

Dougal1957

@gloomyandy said in Two extruders doesn't heat "together":

@dougal1957 Might be worth measuring the resistance of the old/new cartridges? Maybe the new ones are drawing more current than they are supposed to?

not me with the issue just throwing ideas into the pot!