Laser randomly fires at 100%

There are two control lines to the lps from the controller…
L-On1 which enables the laser to fire and LPWM1 which is the percentage power.
Without the lps powered up, you can check the L-On1 at the controller or at the IN input of the lps. It’s a ttl type signal, although it will respond to an analog voltage, so it’s range is 0 to 5V.

• Darren

  : At 50% power it should read @ 50% power, 50% of 5V or 2.5V… The pwm on a Ruida runs as soon as the machines goes into run mode. It’s constant throughout each layer. The L-On1 needs to pull L on the lps low to cause it to fire. These two are easily checked with a voltmeter.