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45W Laser Power Supply Wiring for Manual Power Control

Posted: Sat Apr 08, 2017 1:15 pm
by ToddWatson
Could you please verify or correct the following diagram to manually control the laser power by a Potentiometer.

I tried this connection setup and the laser did not fire at any power in manual mode. I also have an X7 module controlling the power as well (That works when I use the controller test button) The controller is isolated from the laser power supply circuit by a DPDT switch when in manual mode. Please see attached.
Laser Power Control Circuit.JPG
Laser Power Control Circuit.JPG (68.77 KiB) Viewed 3614 times

Re: 45W Laser Power Supply Wiring for Manual Power Control

Posted: Sat Apr 08, 2017 3:24 pm
by Tech_Marco
During manual mode, it fires only if you press the Fire Laser button switch

Marco

Re: 45W Laser Power Supply Wiring for Manual Power Control

Posted: Tue Apr 11, 2017 6:19 pm
by ToddWatson
Tech-Marco,

When I press the fire button the laser doesn't fire at any potentiometer adjustment. I just wanted to verify that the circuit is correct.

I know the potentiometer is acting as a voltage divider resulting from 0 volts to +5 volts DC at the IN terminal.

Does the laser power supply need to be power cycled when I go from PWM mode to analog voltage mode?

I am using L to G, thus creating 0 volts at L to fire the laser. Is that correct? Should I fire from +5 to H instead?

Re: 45W Laser Power Supply Wiring for Manual Power Control

Posted: Wed Apr 12, 2017 8:00 am
by Techgraphix
Did you connect both (Laser1 and Laser2) WP (waterprotect) connectors to GND on the controller? Or connected a flowswitch to one of this connectors and shortcircuited the other to GND??
It is not in your drawing..

Kees

Re: 45W Laser Power Supply Wiring for Manual Power Control

Posted: Wed Apr 12, 2017 8:08 am
by Tech_Marco
If he hasn't turned on the water protection on the DSP card he doesn't has to connect WP to the ground on the controller side. So far I don't see any problem on his diagram. If Fire button press it should fire the laser on the manual mode. Could be connection issue I guess

Marco

Re: 45W Laser Power Supply Wiring for Manual Power Control

Posted: Thu Apr 13, 2017 9:48 am
by ToddWatson
Marco,

I will recheck my wiring, thank you for reviewing the drawing.

Re: 45W Laser Power Supply Wiring for Manual Power Control

Posted: Thu Apr 13, 2017 10:16 am
by Tech_Marco
Check the continuity of the Fire Button. You may connected it to normally closed (NC) mode instead of normally opened (NO).

Marco