I am Matthias from Germany - an enthusiast in medieval arts and crafts … I am neither a native speaker nor good in electronics or programming. So please excuse any stupid expressions or questions :o)
I am absolutely new in laser cutting. I just anhanced my CNC mill by a laser module.
It worked fine for a short time. I managed to engrave text and to cut an “O” from a 8mm beech plywood board.
When restarting the machine I recognized, that the laser fired for a second in the moment when starting lightburn.
Some days later - meantime I didn’t touch and I didn’t change anything - the laser fires permanently on full power when switching on the controller - lightburn not running yet. Even when starting lightburn, M5 won’t shut it off.
I tried many different things:
- flashing firmware again
- changed grbl settings: e.g. laser mode off etc.
- altered connection (I thought of wrong wiring)
- I disconnected the laser driver from the seperate power adapter (see image) and tried to put
24V to the 4 pin input plug - laser doesn’t fire at all.
- When I unplug the connection to the xpro and start the power adapter, the fan of the laser
module starts, the laser does not fire. Therefore it seems like the XPro permanently sends a
PWM signal in full power.
- Also unplugging the “second” ground wire between the laser controller and the XPro didn’t
Nothing helped. That’s really dangerous and frustrating, as now I can’t use the machine at all.
Here are my settings:
- Controller GRBL XPro V5 Spark Concepts; Firmware for laser mode CNC_xPRO_V5_XYYZ_BM3D_NC
- Laser module Ortur LU2-10A 10W
- Laser controller Board La_Conv_V1.0
- One power adapter for Controller and laser: Kingwen 24V 20A Adapter Transformator 480W
- Controller GRBL settings that once worked well:
Maybe I do not need the laser module controller board? But if so, how to connect the module directly to the XPro controller? And most interesting: Why did it work once???
I am almost sure it’s something simple…
Any help would be appreciated.
Thanks a lot in advance