I could use some help

fcwilt

@fcwilt I think what we've learned from this experiment is: G1 H1 Y-20 F2600 doesn't communicate with the board / printer very well, and G1 H2 Y-20 F2600 seems to have no problem communicating with the board / printer?

Hi Mac,

The particular command issued would not in anyway affect communication with the board.

The configuration of the board may be preventing the commands from being performed correctly.

Did you do the test I asked for? The one using a series of G1 H1 Y-10 commands to move the bed until it reach the endstop.

Do you remember that list of steps I posted?

Thanks.

Frederick

A Former User

@fcwilt link text

That's a link to what I think are the motors used in the Xvico.

If you scroll to the bottom of the page, there's a run-down of the motor's specs.

A Former User

@fcwilt

A Former User

@fcwilt

fcwilt

@mac

Thanks, Mac.

That is just what I needed to know.

Did they come with the printer or are the new items you installed?

Frederick

A Former User

@fcwilt the motors that came with the printer are painted black. there is no information on them. I'm trying to think if I still have the literature? (I'll work on that). The pictures I just posted (twice), are based on googling Xvico motors, Alienexpress. That's what I found, those pictures match my motors to a T, although the wiring that came with mine is colored differently.

fcwilt

@mac said in I could use some help:

@fcwilt the motors that came with the printer are painted black. there is no information on them. I'm trying to think if I still have the literature? (I'll work on that). The pictures I just posted (twice), are based on googling Xvico motors, Alienexpress. That's what I found, those pictures match my motors to a T, although the wiring that came with mine is colored differently.

Well steppers with very different characteristics can all look the same as it is the wiring on the sides that makes the difference.

So backing up to the question about the M906 current settings for the existing steppers - where did those value come from?

Thanks.

Frederick

A Former User

@fcwilt the specs for the motors are in the lower picture, 600 V/1mA.

A Former User

@fcwilt

Motor specs:

Phase: 2, Rated current DC 1A / phase
Rated voltage DC4.5V, step angle 1.8 degrees + or - 0.09 degrees 
phase resistance (20 degrees C) 4.5X(1 + or = 15%) ohm / phase
Phase inductance (1 KHZ) 9.5X (1 = or - 20%) mH / phase 
Holding Torque more or less 420 nM.m 
Position torque 15 mN.m REF. 
Grade: 0.25Kg REF. 
Insulation resistance more or less 100 M ohm (DC 500V)
Turn (shaft extended to look) A-AB-B-clockwise
Electrical strength AC600V/1mA/1S 
Moment of inertia 57.3g.cm squared
Insulation grade: B 
Maximum no-load operating frequency more or less 1500 PPS 
Maximum no load starting frequency, more or less 1000 PPS

A Former User

@fcwilt you must be gone.

I'm going to go look for the box the Xvico came in.

Mark

fcwilt

@mac said in I could use some help:

@fcwilt you must be gone.

I'm going to go look for the box the Xvico came in.

Mark

I was outside filling up the hot tub.

The specs you posted are reasonable as those steppers are but 38mm in length.

And if they are the steppers that came with the printer then my theory as to what is wrong is looking very good.

Still when you get a chance run the test I posted about using G1 H1 Y-10 moves repeatedly until the endstop is activated.

Until I know the result of that I cannot describe the next test to try.

Thanks.

Frederick

A Former User

@fcwilt I did the test, multiple times this morning, and posted the results, which are above this post. I'm going to copy and paste them, and resend them to you.

A Former User

@fcwilt see above?

A Former User

@fcwilt said in I could use some help:

here are the results: I discovered that my wireless mouse and the printer aren't really communicating. Sometimes, the bed moves the whole 10mm's, sometimes it turns half or less of that. So it isn't click, pulley turns, bed moves 10mm's, it's more like click, nothing happens, click, the pulley turns 3 mm's, click, the pulley doesn't do anything, click, it turns 10mm's.
So I turned off the wireless mouse, and plugged a USB mouse into my keyboard.
I'm going to do the test again, from the beginning.

A Former User

@fcwilt said in I could use some help:

Test no. 2, same results with a wired mouse. I'm clicking the same way every time, and that's not working every time. Maybe the wifi is wonky?
Status isn't reporting anything.

A Former User

@fcwilt said in I could use some help:

so here's some bad news: I'm experimenting with the code (G1 H1 Y-XX FXXXX). I used 2600 for the F, because that "speed?" worked last night? No change, really. The signal's going to the printer are having a hard time getting there, or, the printer's having a hard time understanding and acting on them?
So then I changed the code to: G1 H2 Y-20 F2600
The bed slides towards the rear like it's on ice.
And here's some more bad news: Status is displaying the position of the bed. Y is at -160 now.
The end-stop fully compressed.
Mac

A Former User

@fcwilt said in I could use some help:

more bad news: I went to the Dashboard. There, Display is showing me the position of the bed. (So maybe, when you're in the CONSOLE, that information isn't available?).
Anyways, the bed is at 87 right now. That's the 18" mark (the 457mm mark).
The jog selections for Home Y are available.
Mac

A Former User

@fcwilt it's 9:25 here.

I just Home Y'd the bed.

It smashed into the front adjustment bar.

In Status, Y is reporting the bed is at 110.0 (which is B.S.).

I can use the Y-jog buttons to move the bed back to 0.0, but that's as far as the bed will go.

So now I'm at Y=0.0.

The bed is in the middle of the metal ruler, at 244.475.

Status is saying that Y is 0.0.

A Former User

@fcwilt M119 is reporting that all of the endstops are not stopped, which is true.

G91 has been sent to the printer.

G1 H1 Y-2- F3600 caused the bed to move back / to the rear approximately 1mm (instead of 20).

I sent the command again, the bed moved slightly more, but no where near 20mm's.

I sent the command again. I hear the sound of a motor spinning? But the bed when nowhere.

Clicking on the SEND command is producing varying results from no move to short moves to occasional long moves.

Mark

fcwilt

@mac said in I could use some help:

@fcwilt it's 9:25 here.

I just Home Y'd the bed.

It smashed into the front adjustment bar.

In Status, Y is reporting the bed is at 110.0 (which is B.S.).

I can use the Y-jog buttons to move the bed back to 0.0, but that's as far as the bed will go.

So now I'm at Y=0.0.

The bed is in the middle of the metal ruler, at 244.475.

Status is saying that Y is 0.0.

Anytime you cannot move the axis because it is at one limit or another just execute M564 S0 and the limits will be ignored - until you re-boot the printer.

We know homing of Y is not working and we have not made any changes (yet) that will fix that.

The steps I outlined will help us understand why homing is not working.

Here is a re-cap of what I posted:

You posted that you were having success doing G1 H1 Y-10 commands and it moved 10mm at a time and the DWC display for the position of Y was consistent with those moves.

Is that correct?

If it is correct I would like you to do another test, starting with the bed somewhere in the middle of it's travel, so it has a ways to go before it reaches the endstop switch.

Then from the DWC console:

issue a M119 command to check the state of the endstops
issue a G91 command to set relative movement mode which is necessary for homing
issue as many G1 H1 Y-10 F3600 moves as it takes to get the bed to the position where the endstop switch is triggered
check the DWC Y position display after each move to see if anything odd is happening
when you finally reach the position were the endstop switch is triggered issue another M119 to again check the state of the endstops

What I am trying to check is if the problem only occurs when you try to do long Y moves but short Y moves, like 10mm, work fine.

So I am running around the house like a crazy person doing chores to get ready for our summer guests here at the lake.

But I will keep checking in to read your posts.

Hang in there.

Frederick