Extruder motor not working correctly after update
-
I spent forever getting updated to the current 3.3 from 2. something or other. Can't remember quite which it was. Anywho, my extruder motor (new) works, but not well enough to actually extrude filament. Seems like it's not getting enough current. I've played around w/ the current settings in the config.g, and report @800ma I get no movement while mounted in extruder assy. I have to turn the current to an unsafe level. i.e. 1100ma on a motor rated for 1.4 to get even partial operation. I need the groups help again. Let me know if you need me to share more info. Thanks
-
People need you to:
- Post your config.g
- Tell us which Duet you have
in order to be able to help at all.
THEN I bet you'll get a bunch of friendly help.
-
@alankilian I've have both a 1st gen board and a 2nd gen board. I've tried both with identical config.g's. Here is the config.g I'm using with both boards on a custom CoreXY machine. ; Configuration file for Duet WiFi (firmware version 3.3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.3.10 on Mon Jan 24 2022 20:50:56 GMT-0500 (Eastern Standard Time); General preferences
G90 ; send absolute coordinates...
M83 ; ...but relative extruder moves
M550 P"CoreXY 1" ; set printer name
M669 K1 ; select CoreXY mode; Network
M552 S1 ; enable network
M586 P0 S1 ; enable HTTP
M586 P1 S0 ; disable FTP
M586 P2 S0 ; disable Telnet; Drives
M569 P0 S0 ; physical drive 0 goes forwards
M569 P1 S0 ; physical drive 1 goes forwards
M569 P2 S0 ; physical drive 2 goes forwards
M569 P3 S0 ; physical drive 3 goes forwards
M584 X0 Y1 Z2 E3 ; set drive mapping
M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation
M92 X80.00 Y80.00 Z400.00 E837.00 ; set steps per mm
M566 X900.00 Y900.00 Z60.00 E120.00 ; set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z800.00 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 X320 Y185 Z300 S0 ; set axis maxima; Endstops
M574 X1 S1 P"!xstop" ; configure switch-type (e.g. microswitch) endstop for low end on X via pin xstop
M574 Y2 S1 P"!ystop" ; configure switch-type (e.g. microswitch) endstop for high end on Y via pin ystop
M574 Z1 S1 P"!zstop" ; configure switch-type (e.g. microswitch) endstop for low end on Z via pin zstop; Z-Probe
;M558 P0 H5 F120 T6000 ; disable Z probe but set dive height, probe speed and travel speed
;M557 X15:215 Y15:185 S20 ; define mesh grid; Heaters
M308 S0 P"bedtemp" Y"thermistor" T100000 B4138 ; configure sensor 0 as thermistor on pin bedtemp
M950 H0 C"bedheat" T0 ; create bed heater output on bedheat and map it to sensor 0
M307 H0 B0 S1.00 ; disable bang-bang mode for the bed heater and set PWM limit
M140 H0 ; map heated bed to heater 0
M143 H0 S120 ; set temperature limit for heater 0 to 120C
M308 S1 P"e0temp" Y"thermistor" T100000 B4138 ; configure sensor 1 as thermistor on pin e0temp
M950 H1 C"e0heat" T1 ; create nozzle heater output on e0heat and map it to sensor 1
M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit
M143 H1 S280 ; set temperature limit for heater 1 to 280C; Fans
M950 F0 C"fan0" Q500 ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0 H-1 ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"fan1" Q500 ; create fan 1 on pin fan1 and set its frequency
M106 P1 S1 H1 T45 ; set fan 1 value. Thermostatic control is turned on; Tools
M563 P0 D0 H1 F0 ; define tool 0
G10 P0 X0 Y0 Z0 ; set tool 0 axis offsets
G10 P0 R0 S0 ; set initial tool 0 active and standby temperatures to 0C; Custom settings are not defined
-
OK, you were running firmware revision 2.something and it was working fine and you updated to firmware version 3.3 and now your extruder doesn't move much at all.
And you changed nothing other than the firmware revision.
Is that right?I don't suppose you have your old 2.x config.g do you?
-
@alankilian Well, that's right in a way, but sooo many things changed going from 2.? to 3.0 and above. It wasn't a matter of simply copying everything over because of all the changes like the 'M' commands.
-
When you say it won't work, is that with or without filament loaded?
When you increase the current it does move? Is that when extruding plastic?
Perhaps your thermistor values didn't get brought along and your temps are off?
1100ma on a 1400ma board is still within the the 60-85% of rated, albeit at the high end.
-
@phaedrux With filament loaded.Increase in current makes it move and extrude somewhat. DWC reports being at print temp. Yes, current that high concerns me. Really want to resolve this. I have a big project I'm ready to start
-
@gbusy24 said in Extruder motor not working correctly after update:
@phaedrux With filament loaded.Increase in current makes it move and extrude somewhat. DWC reports being at print temp. Yes, current that high concerns me. Really want to resolve this. I have a big project I'm ready to start
As a general rule, needing to set high motor current to get an extruder to work is a sign that something else is amiss. That "something else" is a restriction to flow which might be caused a partial blockage or attempting to extrude at too low a temperature. Are you sure that the temperature reading is accurate? Have you tried raising the hot end temperature and if so what happens? Have you checked for any partial blockages, either in the nozzle or in the heat break area?
-
@deckingman Along with the update to 3.3, I also refurbished the hotend. New heater block, new thermistor, new heat break, new heat sink and nozzle also. New everything after 6 years of heavy use. I'm using the same filament I used for almost 4 yrs. Printing at same temp I always have with this filament. The extruder motor is brand new too. E3d 0.9 resolution pancake stepper.
No such thing as spare time. No such thing as free time No such thing as down time. All you got is lifetime. Go!
-
@gbusy24 said in Extruder motor not working correctly after update:
The extruder motor is brand new too. E3d 0.9 resolution pancake stepper.
Were you running the same motor before?
I am using an E3D pancake motor on my titan aero and found I needed fairly high currents to get the little motor to work reliably at higher feed rates.
I have no problems because the water cooled block also keeps the motor very cool. -
@gbusy24 Have you considered the possibility that the reason your extruder motor doesn't work after updating the firmware might be something to do with the miriad of other changes you made at the same time (including changing the motor itself), rather than a firmware issue?
-
@deckingman Yes, but I've unfortunately been at all this for quite some time B4 I ever dreamed of posting my issues on the forum. That's just how I am. I go to great lengths to work things out on my own first. Therefor, I now cry out. LOL
-
@deckingman and OwenD, I threw caution to the wind and upped the current to 1200ma and things are working as I want now, that's 86%. Lotta current, but if it works......................
-
@owend What currents are you running?
No such thing as spare time. No such thing as free time No such thing as down time. All you got is lifetime. Go!
-
@gbusy24
I'm actually running 1400mA on that motor.
I started at about 1100 and as the motor was stone cold when running, because of the liquid cooling, I eventually increased it up to the maximum rated current.
It still runs cold and I've had no issues although I'm not a high volume user.
I can't guarantee the same results for you, especially if you don't have a liquid cooled extruder system. -
@gbusy24 What diameter nozzle do you use? If it's 0.4mm consider using 0.5mm. You will arguably lose 0.1mm in resolution if you print small, highly detailed parts, but a 0.5mm nozzle has circa 50% more area than a 0.4mm nozzle and you'll find that you can extrude reliably using much less extruder pressure (motor torque).
-
@owend Thanks for your reply.
-
@deckingman I may give that a try. Thanks
-
Duet WiFi hardware designer and firmware engineer
Please do not ask me for Duet support via PM or email, use the forum
http://www.escher3d.com, https://miscsolutions.wordpress.com -
@dc42 Hi, I just saw your message and ran the command. E-thing seems good to go. Here's the response: "M98 P"config.g"
HTTP is enabled on port 80
FTP is disabled
TELNET is disabled
I've come to terms that this smaller stepper needs higher current than normal sized steppers. I'm okay with that. I've used this motor for years on my setup and haven't had any problems. I am going to show it a lil' love tho with a nice heatsink that arrives tomorrow
