Rotary LSR-K40ROT PROBLEM

[mandomagnon]

Greetings -- USING DSP X7

I have the LSR-K40ROT It was working great, but all of the sudden it isnt,

I can manually move in the X and the Y I can press BOX and it will move x and Y

I press START and it will only move in X it will NOT move in Y

Took the rotary off and it works perfect on flats.

Does anyone have an idea of what it can be.

[Tech_Marco]

You may need to get proper 'um' value set up before it eorks again.
The new LaserCap could over written your previous one.

Marco

[Tech_Marco]

I need to get few things cleared before I can make comment.

After the update:
1) Without the rotary installed, was both X and Y working properly?
2) Did you swap motor driver and giving it a try?
3) Were you sharing Y motor driver or use 3rd motor driver for the rotary?
4) Did you double check the motor driver current for the rotary?

If you downgraded the OS and it still not work, I don't think that it has anything to do with the DSP. Just double check your wiring see if it got lose.

Marco

[mandomagnon]

I need to get few things cleared before I can make comment.

After the update:
1) Without the rotary installed, was both X and Y working properly?
YES
2) Did you swap motor driver and giving it a try?
YES
3) Were you sharing Y motor driver or use 3rd motor driver for the rotary?
NO
4) Did you double check the motor driver current for the rotary?
YES
If you downgraded the OS and it still not work, I don't think that it has anything to do with the DSP. Just double check your wiring see if it got lose.

As I mentioned before, I can manually move in both X and Y
If I press BOX it will move in X and Y in the perimeter
When I press Start it will move in Y to where it has to star engraving but it WILL NOT move in Y ONLY in X

[Tech_Marco]

I think I got confused from your last statement. You said that on X was moving when you press Start. I am wondering what setup it would be; with or without rotary. Or, it happened on the XY stage where No Y movement after the rotary was removed

Marco

[mandomagnon]

ok Marco here is the latest

The Machine WILL NOT engrave using the rotary a file that is in PNG JPG BMP
However it WILL engrave using the rotary if I draw directly on lasercad.
-I did a circle and square
-Sent to the machine
-It worked
-But it engraved in 180 degrees (upside down)
look at picture please

I uninstalled lasercad completely and reinstalled it again same thing.

[Techgraphix]

Upside down for the rotary is no problem: you have to swap two wires: either A- and A+ or B- and B+ of the steppermotor.. Easy to do at the stepperdriver.
When Left and right are swapped: just turn your rotational 180 degrees..

It's quite strange that engravings are OK in normal use and not when you use the rotational. The firing of the lasertube has nothing to do with the steppers..

What changes do you make when you attach the rotary for use?

Do you have a separate stepperdriver for the rotational?
Normally you only have to divert the PUL and DIR signals from the Y-driver to the rotational-driver and enable the rotational-driver, nothing more..
Ofcourse there will be a difference in traveldistance but you can solve that with adjusting the microsteps of the drivers:
one rotation of your Y-axis pulley may be 30mm perhaps while one rotation of the rotational-stepper may give you 60mm, for instance..
In that case you alter the microstep setting of the rotational to double the number of the Y-axis.
While this is a friction-type rotary and the circumference of the rollers is constant you don't need to adjust that for every job.
Small differences can be adjusted in your drawing: say you want to engrave a square of 100 wide and 100 high and it comes out as 100 wide and 105 high, so 5% too high,
make your drawing 100/105 = 95.238% in height..
This way you don't have to adjust the um/step of the Y every time..
Kees

[Techgraphix]

I designed a small electronic circuit to swap rotary and y drivers so that the rotary could be connected and removed while the machine is on (Hot-swap) but i thought that this could also be done in a simple way with a DPDT (double-pole-double-throw) switch:

Both Y and Rotary PUL- and DIR- entries of the drivers are connected to the controller's Y-PUL and Y-DIR
In Normal operation:
Y-PUL+ and Y-DIR+ are connected to +5V
ENA+ of the Rotary-driver is +5V, while ENA- is always connected to GND, in this state the ROTARY-driver is disabled and the rotary can be attached or removed..
Also the green led will lit.. This can be a bi-color common cathode led. When you have a common anode type you have to change the wiring a bit.. This is drawn in the lightgrey box left-down.

IN Rotary operation:
Y-PUL- and Y-DDIR- will be connected to GND, so no pulses will be passed to the Y-stepperdriver but the motor will be forced at position
ENA+ of the rotary will be GND-level so the ROTARY-drive is enabled.
And the red LED will lit.

All you need for this is one DPDT-switch, two leds or one Bi-Color-led Common cathode and a resistor 220 Ohm 1/4 Watt .... and some wire..

Kees