HP3566 I tried to use the fire pulse button but it was not working. So I did a test file with a filled circle. The laser head is doing what it is supposed too, but the first 1/4 inch the laser did not fire then it started firing for the rest of the filled circle. I did several more test and sometimes it will start firing when it is supposed too then in the middle it will stop firing, then start again. When the laser stops firing the gantry is still doing what it is supposed to. When it stops firing the M amp gauge goes to zero. The pulse fire button only works once after I have run the test circle then it will not fire the laser again. I have checked the chiller. Water level good, hoses look good no kinks. cable for the chill connections are tight. Checked hood interlocks connections are tight. I have noticed periodically I would have what looked like lines missing in my engraving but only once in a while. Does anyone have any ideas. Thanks
Not a CO2 user, but I have read there is a % below which the laser will not fire. And it can be variable in use. I have seen MIN Power numbers from 8% to 12% or more.
If this does not help, it could be the LPS going bad. Keep us posted and a CO2 Guru will surely jump in.
The laser power supply (lps) works like this..
There is a common ground between the devices.
The IN terminal on the lps set the current limit to the tube.
The L terminal enables the machine to lase at the IN set value.
You can measure the IN voltage, as most dsp produce a pwm signal the entire time it’s executing a layer. When L goes low it should lase.
If it starts the circle and both of these are present, then the controller is working and the lps is the likely suspect.
Normally the P terminal is wired to ground. This is the water protect that by passes the controller. The controller should handle a failure, not the lps.
What are you min/max power settings and the speed you’re doing this?
