2012 DSP Laser fires after power on

[Don_Karlos]

Hi,
I'm almost done with my conversion and today was the day after making all electrical connections and setting up the software to turn it on with the power supply connected to the Laser. I used the basic connection diagram from you although it refers to the outdated older DSP.
Like in the case being discussed in an older thread about the conversion of a K40 machine immediately after switching on the system the laser is firing (since I don't have a Amperemeter connected I can't say with how much power). When I disconnect the left connector and leave the AC/DC Power connector in place the system powers up and I'm able to fire the laser with the red button on the power supply (between the two connectors.
I've attached some pictueres of my conversion. I also can't find any jumpers close to the laser1 and laser2 connectors on the DSP board for switching to PWM control (I had to break the QC Seal to get the lid of - hope that this doesn't interfere with my warranty ). There is only one marked "J1" in the middle of the PCB.
Do you have any advice for me how to fix the problem?
Other than that I had no issues with the setup and everything went straight forward!
Many thanks for the support!!!
Karl

[Don_Karlos]

Hi,
ok, did some research. When I understood right, the power supply is triggered by a high or low TTL Signal. this means if I set the software in the manufacturer settings to "Glas Tube" and the Triggering to "Low Level effective" the DSP should start at Power on with an open circuit between Pin TTL and GND. If the Laser is turned on by pressing the button "Laser" on the LCD Panel the connection between TTL and GND should be closed. If I put a Ohmmeter between TTL and Ground I measure zero Ohm when I turn the System on (the DSP is switching from open to fully closed). This is possibly not right. The Laser button on the Panel has no effect on this.
Thanks
Karl

[Tech_Marco]

The connection of the power supply is not correct. Do not connect the +5V from the board to the PS +5V. You must connect the Ground on the DSP board to the Ground of the Power supply. Also, make sure to use "TL", not "TH"

Regards,
Marco

[Don_Karlos]

You are the man!!
That trick did it. The only excuse I have is that I live in a region of the World which is by now dark and cold
I had the basic problem with the minimum wiring diagram compared to the DSP2012 because the PINs are in different configuration on the Laser1 connector. I used that diagram for wiring and there is no description for the Pins on that scheme (instead only numbers and Pin1 is GND, PIN3 is TTL- and Pin4 is PWM).On the new DSP the Pins are different. Your pictures are very helpfull in that regard!! If I have some time I'll make a new diagram because I overread that the old scheme is not for the new DSP!!!
Thanks alot
Karl

[Cagatey01]

I'm converting a Chinese laser to work with the DSP system, and it uses that white642-999 vce exam - testking
"AWM 20624" ribbon cable for the limit switches and stepper wires. What are people doing to deal with this cable and hook it into the DSP? Thanks!