Weak pulse?

[funhawke]

6090 Chinese machine - 80 w SPT tube, LightObject pwer supply - both new.

Replaced power supply - replaced tube. Aligned/cleaned mirrors. At each test of mirror - seem to be a normal "punch" (pic attached) Tried a test pattern and nothing. Tried a test pulse on the twill material and made a small hole (as it should). BUT my amp reader read "EFE" (pic attached) Tried different test with different settings - still nothing. Reviewed all wiring - ok. Tested all door switches OK - Water switch - ok. Used a multi-amp tester to test amperage while running test pattern and power showing 5.1 to 9.1 which is about normal for output in past patterns for the jobs I do. So I pumped up power to 60%(normally 25%) and downed speed to 20 (normally 100) it made a mark but not cut through this .5mm material - but way to high for settings. Is the tube bad?- brand new SPT 80 watt replacement.

Is there something I am missing, software setup?? - I replaced the old power supply which came with the machine with a new LO Smartbean 80W PWM CO2 Laser Power Supply.

[Tech_Marco]

9.1mA looks OK. What is the mA at 60%? If the tube is bad you will not see a solid pink beam inside the glass tube. Is controller setting for power supply 20kHz?

[funhawke]

How do you check/set controller setting for power supply 20khz?

[funhawke]

Yes I believe it is set to 20khz. In lasercad/Options/manufactures parameters - PWM set to 20000
.
Did some tests - on .5mm twill material past power supply and reci tube on this material - 100 speed/20 power is normal:

Speed Power Result
10 20 no mark - no fire
10 30 no result as above
10 40 clean cut
10 35 no result
20 40 clean cut
80 40 clean cut
100 40 cut but not so clean