Quote from Paul on July 30, 2020, 8:48 am

Hi, there is no cap, so 100% is the max which is about 18mA on the K40. Running at laser at 100% will reduce the lifespan considerable from 500-1000 hours to about 10 hours so always run 80% at max.

Suggestions:

1. Are the S parm aligned in mini gerbil ($30 value) and Lightburn S=1000?
2. Is the return for the 5V - ground connection solid? e.g. screw terminals tightend
3. Is the laser ground to the mains earth solid? e.g. k40 case earth terminals have sometimes a plastic washer! See K40 laser grounding instructions

Let's us know if that helped.

 

Quote from samm22 on July 30, 2020, 9:34 pm

tried all you suggested and all seems good, but unable to get anything over 20.5% 8mA. even checked the mA metre wiring. below is taken from console and screen shot of 1000 in settings

$$

$0=10

$1=255

$2=0

$3=1

$4=0

$5=1

$6=0

$7=0

(ATC M6, pulse/ff)

$8=100

(ATC Tool Td, milliseconds)

$9=100

(ATC M6 Td, milliseconds)

$10=1

$11=0.010

$12=0.002

$13=0

$19=0

(Softstart, milliseconds)

$20=0

$21=0

$22=1

$23=3

$24=2000.000

$25=2000.000

$26=250

$27=4.000

$28=5

(Spindle freq. 0 to 15)

$30=1000

$31=1

$32=1

$100=157.000

(x:stp/mm)

$101=157.000

(y:stp/mm)

$102=160.000

(z:stp/mm)

$103=160.000

(a:stp/mm)

$104=160.000

(b:stp/mm)

$110=12000.000

(x:mm/min)

$111=6000.000

(y:mm/min)

$112=5000.000

(z:mm/min)

$113=5000.000

(a:mm/min)

$114=5000.000

(b:mm/min)

$120=8000.000

(x:mm/s^2)

$121=3000.000

(y:mm/s^2)

$122=3000.000

(z:mm/s^2)

$123=3000.000

(a:mm/s^2)

$124=3000.000

(b:mm/s^2)

$130=320.000

(x:mm max)

$131=230.000

(y:mm max)

$132=200.000

(z:mm max)

$133=200.000

(a:mm max)

$134=200.000

(b:mm max)

ok

Quote from Paul on August 11, 2020, 10:14 am

Have you tried to lower $30 settings say to 500 and retest? If that does not work that it's likely that the tube has expired (gases do deteriorate over time even when not used).