I’ve changed the controller on my G.Weike 6090 from the original Leetro MPC6525 to a Ruida RDC6442S so I could get rid of Lasercut5.3 and use Lightburn instead.
I connected LASER DA from the Leetro to LPWM1 on the Ruida and LASER LAS to L-On1.
I have laser1 in the machine settings enabled, laser2 disabled, and Output Signal is on Low.
I now observe the following:
When jogging through the control panel the laser stays off as it should
When pushing the Pulse button the laser goes on, when releasing the button the laser goes off (not sure if this is the expected behavior or not?)
When jogging through Lightburn the laser stays on
When executing a file (either directly through Lightburn, or by sending the file first and then starting it from the control panel), both cut lines as well as moves are being cut (so the laser basically stays on the whole time)
When turning the machine on, it first homes with the laser off, then goes back to the last origin with the laser on (it does this at 17mA, which matches 50% power)
Whenever I see the machine cutting (be it actual cuts or the moves in between), I note the output (mA) on the PSU adjusting as expected with the power % set in Lightburn for that cut layer (3mA at 10%, 21mA at 60% for instance)
Anyone have an idea what I should do to fix this so the laser goes on only when required, and not while jogging?
I’m measuring 1V on the PWM when cutting at 25%, which seems to be okay?
During cuts (with the COM (black) of my multimeter against G) I’m measuring -0.2V on L, and -0.6V during moves. So it’s toggling high/low correctly it seems, only the high value is much too low? Also not sure about the negative values…
I pulled out the laser plug on the controller, and everything measured fine on the controller itself without anything connected to it (1.25V PWM at 25%, 0.2V for low and 4.6V for high).
I then tried to trace the physical wires from the plug to the LPS, but they went through some sort of serial port connector, and (invisibly) switched colors at that point.
I then again measured the wires for continuity between the controller plug and the LPS, and guess what? I had somehow managed not only to switch LOn-1 and GND, but also not to notice this when measuring this out the first TWO times…
This very well explains why I was seeing negative currents on the LPS…
And I consider myself very lucky not to have fried anything in the process…
Hi you must be new here, If you click on my name all of that info is provided. The forum requests you to fill that questionaire out. But thanks for not helping at all and just dumping a bunch of unrelated text at me. Why on earth would you want someone to start a new thread when the person was having identical issues to mine. Keeping it all in one thread would certainly make more sense than rehashing all of this info above. Now my solutuon is here for others who come looking instead of off in some other random new thread.
Issue resolved via the volt metering tips in this thread indicating a faulty laser power supply unit. Replaced and working great.
When you are trying help someone, information NOT in your profile is beneficial, such as has this ever worked before, it’s a new build, changed out the controller, put in a new lps, rewired a vent fan… etc… all of this is pertinent when trying to debug an issue.
None of which is in your profile.
Many times the same problem is not caused by the same issue, opening new threads makes in easier for people to find an appropriate thread.
If a thread is solved, start a new one … What we call hijacking of threads is not really acceptable here.
It’s very possible that you would have been referenced to this or a similar thread in any case.
This is your definition of we gave you no help?
As a suggestion, you’ll find you get better help if you settle down and have a cup of coffee before your wording offends those that are trying to help you… This is especially true when you admit that the information was there all along and you didn’t read or use it.
You will find quicker responses here than any other site that I know of, along with better information for laser users, for technical and non technical users.
We are trying to help you, not offend you, please keep that in mind.