@taylo708 Ok, Im only Using on X/Y Axis. My Z Axis has 3 Motors. Im Almost done Printing the Parts for my Voron 2.4 Build. When I get the Motors back, I Should be totally done and can Start Digging into why these are doing what they are doing.
@3DPMicro Gotcha Thanks, Have been Looking at the Slice Magnum Setup for a while
@3dpmicro Looks Really Good, Do you use a ruby Nozzle for that? Or Just a Plain Hardened Steel Nozzle? Thanks for the advice, Ill look into it
@mendenmh You could be Right, But I love a challange!
@taylo708 Are you Using a Duet 3 With Duet 3 Expansion 1XD Boards for these Motors? I went Crazy on the T Parameters with no Luck
@3dpmicro That's what I Heard! But Its really Expensive. Im Buying PEEK Pellets for Roughly $45/Kg, Then The Power costs to produce the Filament when I get everything Set up.
Ill give it a shot when My Voron Gets Built. I Got CNC Aluminum Parts for the Voron Gantry So it can Handle the High Temperatures
PEKK is Something like $800/Kg I think PEEK is Slightly Cheaper Around $700/Kg. Only went with PEEK Because For Some Reason, Its $45/Kg for Pellets.
Know a Place to get Reasonably Price PEKK Pellets?
@alankilian @moe-adams9093 Just Read all your messages since my Last message.
@moe-adams9093 That is exactly what i have been seeing, Its a continuous Layer shift through the layers. Some Worse then others. Im hoping We can Resolve this. But Its not the end of the world. Just the end of $200.
@alankilian I sort of agree with you about Closed Loop Not Really adding any benefit, To me, Its more of a "Lets do everything we can to prevent a layer shift" (Although I can see as the motor increases the Torque, It just pops the print off the bed)
Im still in it for the rest of the People. This is a popular Motor for people to have. Getting it working should help quite a few.
@alankilian Ok Sounds Good!
I Don't Mind Doing Experiments, I Should Let you know that Im in the Middle of using this Printer with Normal Steppers to Print out parts to Build a Voron V2.4 3D Printer. Will Slap those Motors back on when Finished with the ABS Parts. Ill Be Printing for At least another Week
While Also Experimenting with a Filastruder to Make my Own PEEK and PEI Filament. Im Buried in Projects!
Yes, The Speed Did Not Change, Could it have something to do with the Duet 3 Expansion 1XD Board Drivers Or The Step Rate Across The CAN Like you mentioned.
Also, Did you see any Delays Between 2 Different Axis Movements? To See if Triggers are required to Continue only after moves are completed?
@alankilian Really Great Job, Hope someone Can Shed some light on what's going on here
Happy Easter Everyone!
Sure I don't mind. They will be sitting around Collecting Dust Otherwise. Do you want me to Send 1 Or Both?
The Software they Gave to Change the Parameters:
ESS Protuner
Im Located in Baltimore, Maryland.
Let me know if you need anything else with them, PM me with the details.
@alankilian Great Questions,
Currently Only the X+Y are using these Motors. I Think this Might work if I also Had All 3 Z Motors using the same Motor as well. (Maybe add the same Delay to all Motors Canceling out any issues?)
With the Software, I Changed the Parameters, Saved them and Read them again to make sure it was saved. After changing the Parameters. It doesn't seam like anything actually changed.
I changed them to Open-Loop Mode and it did not change its behavior at all. Slow Movements Repeated the same Issue.
Micro stepping was turned off. Full Steps Only. The Steps Per mm was also Set correctly, 20mm Was Moved 20mm.
Last, Closed Loop was More of a "Want" Then a "Necessity". I Changed these Motors Out just now for Nema 23 Steppers. I Purchased 2 Duet 3 1XD Boards for Closed Loop, and I was Hoping to Utilize them.
Didn't Think I would have a hard time getting them setup
Alright Here's what I Found. I was able to use the Software to Communicate with the Drives. Changed the Setting to be MUCH Lower. Also Tried Changing these to act like Regular Stepper Motors. But Nothing I Changed Would Work.
Here's My Options:
1 - I need to Find a way to make EVERY Move Wait for An End Stop to be activated before moving to the next (Seems Slow and Unreasonable) So Im Ditching These Motors Unfortunately.
2 - Find another Nema 23 Closed Loop Motor that WILL Work with Duet 3 1XD.
3 - Continue to Rip Hair out until Bald.
Would Prefer #2 at this Point. Cost is not Much Of an issue. Any Suggestions would be awesome!
I Just Got the Software to Modify the Settings Built in to the Closed Loop Stepper.
Will change the Motors back and Get back Tomorrow with the Findings
My First Attempt will change the Timing:
13 Pulse command filtering time
Unit: 50us
Range: 0~600
Default: 60 <- Will Change to 1 = 50us
The larger the value, the smoother the motor runs and the noise,
but the position tracking lag time also increases.
@alankilian Thanks for your help, I really appreciate it!
Alright, Heres what happened.
I Had to change the Speed because the original was moving at 0.5mm Per second. I did Pick Ridiculous Speed Numbers To see what would happen, and the Speed Remained CONSTANT the entire time suggesting the Speed is Controlled by the External Driver?
G90
G0 X0 Y0 Z10
G1 X300 F3000
G1 Y300
G1 X0
G1 Y0
G1 X300 F5000
G1 Y300
G1 X0
G1 Y0
G1 X300 F10000 <- Here is where it said the Print was Finished.
G1 Y300
G1 X0
G1 Y0
G1 X300 F15000
G1 Y300
G1 X0
G1 Y0
G1 X300 F20000
G1 Y300
G1 X0
G1 Y0
Edit: The External Driver Doesn't Fully Control the Speed, But Perhaps the Maximum Speed? When Requesting a Low Speed Like 50, it Moved at 0.5mm Per second. But at 3000, It was moving more like 50mm Per Second.
Ill give it a shot. Im also Checking into a way of Modifying that setting from 60 to somthing Much Lower. Should that be Lowered to 1? to = 50us
I don't see that as an option. A 3d Printer that can only Print square Objects! lol
Yes, They all Report Back. I Had to Down Grade Firmware too 3.3Beta1 Because Using 3.3Beta2 Was Causing the Temperature of my Thermocouples to not read anymore.
Good Catch, If these Motors end up being Unusable. Would you or anyone else have a Suitable Option for Replacement? I Thought the Default 60 Meant 60us, Not 50us x 60.
Just Tried T2.5:2.5:50:50 Timing and It still Does the Same thing. Im wondering if this is a CoreXY Related Issue.
Im using a Duet 3 6HC, Duet 3 Expansion 3HC and 2 - Duet 3 Expansion 1XD Boards
The Motors are Connected by a "Differential Connection"
After Homing X and Y, X and Y Move Toward Center, When Y Finishes. X Continues Toward Center But now Z Starts Lifting Before getting to Center.
@dc42 Thanks! I have Tried Numbers Varying up 500.
T5:5:50:250 And So On, How High is TOO High? 1000? 10000?
I Will keep Playing with Timing Keep Checking back
Edit: The Stupid Manual is not much of a manual. I saw the Step Pulse Frequency, But not Direction Setup time and Hold Times
@alankilian
Here is My Home All File. This Issue Only Happens When X and Y Movements are Done Together. Usually It Finishes X Movement, Still Moving Y and Begins Z Lift. During Prints there is a Continuous Layer Shift Indicating to me that Moves are not Finishing before starting the Next.
I have Started Playing with the Timing, and that does not seem to change anything other then if the Motors actually Move or not.
Im not sure how you would add somthing in the Config.g File to Wait for Move to complete before going to next move. monitored by Pend Connections on Each Motor.
G91 ; relative positioning
G1 H2 Z5 F6000 ; lift Z relative to current position
G1 H1 X-370 Y-370 F1800 ; move quickly to X or Y endstop and stop there (first pass)
G1 H1 X-370 ; home X axis
G1 H1 Y-370 ; home Y axis
G1 X10 Y10 F6000 ; go back a few mm
G1 H1 X-370 F360 ; move slowly to X axis endstop once more (second pass)
G1 H1 Y-370 ; then move slowly to Y axis endstop
G90 ; absolute positioning
G1 X121 Y207 F6000 ; go to bed probe point and home Z
G30 ; home Z by probing the bed
Thanks for the Reply, I Cannot be Sure about the Timing. The Manual does not go into Details about the timing.
I have Tried 0.5, up to 5.
How would I go about Finding the Correct Timing?
Can Closed Loop Steppers Only be Used on Cartesian/Delta Machines?
During Homing Sequence, Machine Moves X130 Y150 Same Time, When X Gets to Location, Z Starts Lifting and Is not Waiting for Y to Finish Getting to Location.
Hey All, Im Looking to get these Closed Loop Stepper Motors Setup and Working.
I Currently Have them Connected and Homing Properly. However, I Cannot get them to Change Speed and It does not Seem to Wait for Current Move to Finish before going to the next. This Motor Does have an "In-Position Signal" But Im not sure how to use it. The Alarm Signal is Setup and Working to Stop the Machine if it Alarms.
The Motor is Found on Amazon JSS57P2N Nema23
Manual- Here
Updated to Latest Firmware 3.3Beta2
Core XY Machine, Closed Loop Motors on X/Y
; XY Closed Loop Stepper Motor Configuration:
M569 P40.0 S1 R0 T2.6:2.6:2.6:2.6 ; physical drive 40.0 goes forwards BL X Closed Loop Stepper
M569 P41.0 S1 R0 T2.6:2.6:2.6:2.6 ; physical drive 41.0 goes forwards BR Y Closed Loop Stepper
M569.1 P40.0 S1 T2 E0.3125 R3.0 I4.0 D0.8 ; Stepper Driver Closed Loop Control, T=Encoder Type, E=Encoder Counts, R=Proportional, I=Integral, D=Derivative
M569.1 P41.0 S1 T2 E0.3125 R3.0 I4.0 D0.8 ; Stepper Driver Closed Loop Control, T=Encoder Type, E=Encoder Counts, R=Proportional, I=Integral, D=Derivative
M584 X40.0 ; Duet 3 Expansion 1XD Closed Loop Stepper Motor Back Left X Axis
M584 Y41.0 ; Duet 3 Expansion 1XD Closed Loop Stepper Motor Back Right Y Axis
M350 X1 Y1 ; configure microstepping
M92 X1280 Y1280 ; set steps per mm NO MICROSTEPPING (Pulse Per Rev = 51200)
M566 X6200 Y6200 ; set maximum instantaneous speed changes (mm/min)
M201 X18000 Y18000 ; set accelerations (mm/s^2)
M906 X1950 Y1950 ; set motor currents (mA) and motor idle factor in per cent