Mini 5 Extruder Motor will only spins in one direction (retract)

Silrocco

After retiring my Duet2 WIFI board and replacing it with a new Mini 5, the board is not driving the extruder stepper motor when trying to extrude. I have verified continuity from the stepper motor connector to the board connector and found no issues and motor phases are correct too. I have switched from stepper driver 3 to 4, and making the necessary changes in the config to reflect driver change and the same issue. Same behavior is encountered, neither stepper driver drives the extruder motor in the direction to extrude, only functions in retract.
I have also changed firmware, from 3.4.4 to 3.4.5, and back down to 3.4.2, no change in function. The only success I have had is changing the value of the mA settings in config. When I changed the value from the default of 800 mA to 1000 mA the printer will function as long as I don't shut the power off. If power-cycled the printer it will cease to function and I will have to play with the config's driving mA until I can get the stepper drive to function again. If I change out the board to my old Duet2 WIFI (switched to old duet config), they're no issues. But when I re-install the Mini 5 again to once again verify operation, the same issue. The reason I switched from the Duet2 board is I prefer LAN to operate all my devices.

When I command to extrude from the UI, and place my fingers on the motor's shaft, it shudders. Although when I select retract, the motor will spin.

What I'm missing here? I'm I missing a line in the config the Duet3's need? Again, no issue with the Duet2 WIFI.

M122>
Duet3-Mini-5_M122_console.txt

Config>
Config.txt

Thanks in advance!

o_lampe

@Silrocco
There's nothing obvious wrong with config.
Did you use "M302 P1 ; Allow cold extrusion" before trying to extrude?
Can you confirm the hotend works and is on target temp?

Silrocco

@o_lampe , Hi. Happy New Year!

Okay, I just tried the M302, allow for cold extrude.

Same results, NO stepper motor movement when commanding to extruding, only movement is when retracting.

Prior to the M302, I was reaching the temperature target, no issue with temp.

Thank you for your support.

Phaedrux

@Silrocco said in Mini 5 Extruder Motor will only spins in one direction (retract):

When I changed the value from the default of 800 mA to 1000 mA the printer will function as long as I don't shut the power off.

What are the specs of the motor?

Have you tried a different motor?

Have you tried the motor out of the extruder mechanism?

Is there something mechanically restricting it?

It sounds like either a problem with the motor or the extruder mechanism.

Silrocco

@Phaedrux

What are the specs of the motor? Wantai - 42BYGHW609P1-X10, 1.8 degree Stepper, 1.7A

Have you tried a different motor? Yes. Same issue.

Have you tried the motor out of the extruder mechanism? Yes, I removed motor from the gear extruder housing, it's how I ran M302 P1.

Is there something mechanically restricting it? No. As I mentioned, I can change the mA values in the Config and restart the config, although I have to repeat the process until I can get it to work.

It sounds like either a problem with the motor or the extruder mechanism. Not likely, If I reinstall the Deut2 WiFi it works perfect.

OwenD

@Silrocco Try mapping the extruder to a different driver.

Silrocco

@OwenD I have already done that. I've explained that on my initial post.

Phaedrux

I think you're setting the current a bit low on that motor. I'd probably go with 1200-1500ma

Silrocco

@Phaedrux okay, I didn't want to higher than 1mA risking damage to the driver, ignorance mainly, but I will try going higher as you suggested once I get a chance.

Why does the driver drive the motor in reverse (retract) with the mA current settings?

Thank you.

Phaedrux

What current are you using on the Duet2?

Does this happen with all motors when set as extruders, but not when set as XY?

The rule of thumb is to aim for 60-80% of the rated motor current. If the current is too low things can behave strangely sometimes.

You can also try forcing the drivers into spreadcycle mode and avoid stealthchop mode.

https://docs.duet3d.com/en/User_manual/Connecting_hardware/Motors_tuning

Silrocco

@Phaedrux Sorry for getting back late, I was out on a business trip.

For the Duet2 WIFI, the current was set to 1A and ran without issues, but I understand it has different drivers and beside the fact it's older, nonetheless it worked.

No issues with other axis.

I changed the motor drive current to all the axis to 80% of motor mA specs, but that didn't change the behavior, as it the extruder motor still shuddered when commanded to extrude.

Although after enabling StealthChop it is now extruding. To verify, I have power-cycled the printer multiple times and now when I run an M302 P1 it extrudes and printed a 20mm cube without issues.

Issue RESOLVED!

Thank you for the support!

o_lampe

@Silrocco said in Mini 5 Extruder Motor will only spins in one direction (retract):

and now when I run an M302 P1 it extrudes and printed

"M302 P1" is only necessary for cold-extruding during tests or filament changes. You don't need it when the hotend reached working temperature.

Silrocco

@o_lampe Yes, I know that. I had the motor removed from the extruder gear housing. What I meant is that I'm using M302 P1 and commanding "Extrude" from the GUI to monitor movement for testing.