Error: ALARM:2 G-code motion target exceeds machine travel

LightBurn Software Questions
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1

Need some help! Relatively new to laser engraving. I have a Longer Ray5 10W GRBL laser. It was running perfect. I installed limiter switch upgrade along with firmware update and now I receive this error:

ALARM:2

G-code motion target exceeds machine travel. Machine position safely retained. Alarm may be unlocked

I can manually control the machine via Lightburn. I can make it run a job from the laser via SD card. The machine home correctly and stops when physically triggering the limit switches. But, when I run a job from Lightburn, it throws an error.

One more detail… this works as expected using Laser GRBL.

Any ideas?

2

My settings:
$0=10
$1=25
$2=0
$3=1
$4=0
$5=1
$6=0
$10=1
$11=0.010
$12=0.002
$13=0
$20=1
$21=1
$22=1
$23=3
$24=200.000
$25=2000.000
$26=250.000
$27=3.000
$28=1000.000
$30=1000.000
$31=0.000
$32=1
$38=1
$39=1
$40=100
$41=40
$42=1300
$43=5
$44=1
$45=1
$50=1
$100=80.000
$101=80.000
$102=250.000
$103=100.000
$104=100.000
$105=100.000
$110=6000.000
$111=6000.000
$112=1000.000
$113=1000.000
$114=1000.000
$115=1000.000
$120=500.000
$121=500.000
$122=10.000
$123=200.000
$124=200.000
$125=200.000
$130=400.000
$131=400.000
$132=200.000
$133=300.000
$134=300.000
$135=300.000

3

I have also an Longer Ray 5 20w. I am trying to cut a 3d Puzzle and i got every time on differnt parts of the Project the Errormassage on the Displey of my Longer Maschine:

" ERROR
Movement protection triggered.
The machine has halted.
Please restart your machine.

Gcode Shows:
SimpleLaser 1.1h [‘$’ for help]
[MSG:‘$H’|‘$X’ to unlock]
[MSG:Caution: Unlocked]
ok”

There is no Movement, the Maschine stands stable in place. No tilt or anything.??? Could be the Same Error?

4

Don’t think so. I have had that error related to actually movement – machine bumped while in a job. This is related to my new limiter switches. I can get it to run by disabling limit checks ($20=0 and $21=09) but that doesn’t take advantage of the limiter switch upgrade.

Good luck

5

Adding switches reduces your available work area. How much depends on your switch installation, but it can easily be 5-10mm. Not getting the alarm with limit checking turned off means you are in the very edge if being okay.

Try these GRBL settings:
$20=1
$21=1
$130=380
$131=380

Let us know if this does not clear up your Alarm 2 message.

2 Likes
6

That fixed the problem perfectly. Thank you!

1 Like