28
If no problem as above, check the socket of the digital line if connected well;
The pin definition of power wire (normal use for laser tube more than 100W)
¾
Pin 1 is 5V VOUT. The maximum current output is 20mA.
¾
Pin 2 is H (TH) input signal, which controls the optical switch, when the voltage
≥
3V, the signal will agree the
laser tube to send out laser, when the voltage
≤
0.3V, the signal will not agree the laser tube to send out laser.
¾
Pin 3 is L (TL) input signal, which controls the optical switch, when the voltage
≥
3V, the signal will agree the
laser tube to send out laser, when the voltage
≤
0.3V, the signal will not agree the laser tube to send out laser.
¾
Pin 4 is P (WP) input signal, which controls the optical switch, when the voltage
≥
3V, the signal will agree the
laser tube to send out laser, when the voltage
≤
0.3V, the signal will not agree the laser tube to send out laser.
¾
Pin 5 is G signal. This pin connects the machine body and control card.
¾
Pin 6 as the IN input signal controls the laser power. It can be controlled by 0-5V analogue signal or 5V PWM
signal.
7.2 The laser is very weak.
（
1
）
The laser tube is too old. Need to change a new laser tube.
（
2
）
The focus lens is dirty. Take down and clean the focus lens.
（
3
）
The reflector mirrors are dirty. Take down and clean the reflector mirrors.
（
4
）
The laser path is not right. Adjust the laser path and make it vertical with the worktable.
（
5
）
The focus distance is wrong. Adjust the focus distance.
