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Laser not turning off even during position moves.

Hi gang.

I sincerely apologize if this has been answer elsewhere.

I am having intermittent problems with my K40 not turning off even during position moves so it is drawing lines even during fills.

The "fire" button function in LB works fine and turns off the laser.

I am using Light burn and didn't see anything on their forum so I didn't know who to ask.

I have tried USB power jumper changes and checked the grounding.

Any ideas?

 

Hi, the most likely issue is a intermittent loose connection of the LO signal. Try to reseat the power connector. Please let me know if this helped.

Thanks!

Cheers, Paul awesome.tech

Hi Paul.

What a world it would be if everyone provided such stellar tech support as your's.

What is the LO signal?

Is that the power level pwm? Or the Line connection or something else?

When you say the power connection do you just mean the 120v source plug?

Sorry for being as dumb as a post.

Rob H.

What is the LO signal?->Laser On/Off

Is that the power level pwm? Or the Line connection or something else?

When you say the power connection do you just mean the 120v source plug?->No, it's the Low power connector ( with signals 24V-gnd-5v-LO)

LO is the Laser On signal that sits on the low power connector (4 screw terminal connector/1st on the right). That LO signal tied to ground stops the laser from firing, anything above 2 Volt turns the laser on (and takes the power setting from the IN terminal - which is the PWM signal). LO works with negative logic. Ground is on, + is off.

 

Cheers, Paul awesome.tech

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