DSP to LPSU - SOLVED

[funhawke]

Marco in a post back on Jun 7 you wrote:

Output to LPSU
DSP LPSU
PWM IN
TTL TH
GND GND
WP (either connect to a water chiller sensor or just ground it to GND)

The TTL to TH?

In another thread you indicate the following:

For the "TTL", you need to set it to "Level Low" and it should connect to the LPSU "TL" terminal.

You may try 5% power see if it make difference. Also, try Laser Output 2 if Laser Output 1 still do the same.


Marco

TTL to TL of which I have connected BUT I still do not have power variances. Could this be the problem??

[funhawke]

UPDATE

Figured that one out - TH - high out TL low out...

Changed wires to see what would happen - hoping for a cure but to no avail. Just fired a very intense laser - constant - emerg shut off then re-wired back to TL

It sure would be nice if anyone could come up with an answer?? To what question you ask:

My controller does not seem to have the ability to control the output of the laser intensity/power. Set it at 1% or 100% makes NO difference.

[Techgraphix]

As i told you: your wiring seems OK..
If you tried to vary the power with a potentiometer on the LPSU and that worked, setting the power on the X7-panel (rather than settings via software) failed.
Then you can ask Marco if he wants to replace the controller for examination or send you a unit to borrow.. It took way too long now...
Replacing a controller is a matter of hours at the most, not weeks..

Kees

[funhawke]

Thanks Kees. Waiting to hear from the Marco:( I have tried to PM him and email but that does not work either

Trying to rule things out here Kees:

If the laser is cutting fine, does that mean the LPSU is ok. In other words would this have anything to do with the power supply unit?

[Techgraphix]

The LPSU works appearently. But to make sure that it regulates the power properly, you have to vary the regulating voltage. That can be done with a potentiometer between +5V and gnd. The centre (connected with the slider) gives the control-voltage and so must regulate the outputpower.
If that work, then your LPSU is 100% fine.

I think you can change teh powersettings on the display by pressing ENTER and scroll down using the arrow-keys, press ENTER again, change the value with the arrowkeys and press Enter again (or maybe ESC)

Do you have a manual of the X7?
Although not exactly the same (?) look at the Sinjoe Tech AWC708C manual, i think this comes quite close to the X7
https://drive.google.com/file/d/0B-vPkJ ... ZmcmM/view

Kees

[Tech_Marco]

Sorry it was my mistake. I mean "TL" not "TH" when connecting to the DSP "TTL" output

BTW, because of July 4th, I with my kids and another two family to do camping in Bodega Bay where no Internet signal could be received. So, I was being 'quiet' for 3 days and night. My apology!

Moreover, I did send you case to the programmer before my left to the camping. I'll post a few screen for your review. Hands on


Marco

[Tech_Marco]

You can test the output by highlighting the file name from the LCD control unit and then hit "Enter" to access the control menu. Following the attached images. BTW, you may want to detach the LPSU from the output of the DSP and measure the output voltage by using a DVM
"PWM" vs "Gnd".

By changing % from 0% to 100%, you can see the output varies from 0V to 4.8V (mentioned it from my previous post). I also asked you to perform the same on Laser Output 2 port of the same task. It is almost impossible to have two output port die at the same time. I never seem one that with two output port defective.

If you see that the output varies accordingly, that mean your LPSU is the problem. Possible a shorted circuit or bad PWM chip . Otherwise, you may need to return the DSP and let me run some diagnostic check


Marco

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[funhawke]

Thankyou Marco and forgot that the 4th was your holdiday - ours was weekend before.

I am off to Pelee Island (near Sandusky OH) I have recently wired our cottage and just got approval from electric inspector so can now "click" it on the power. I will be back at the shop on Friday am to check out your settings.

As you seen in another post (sorry for new post) I ran tests from the dsp. it was a constant 2.14v output for varying power settings from software. Should I need to change the settings on the lcd end? This would not make sense as setting them in the software would be useless? Unless there is that elusive option to chose local or software in x7

I did run both outputs with no changes in results. Makes me think back to the original leetro controller. Maybe it wasnt the controller at all but ...in fact the lpsu??

Some questions:
If I purchase new lpsu - what do you recommend and would I be capable of increasing the output of laser...currently at 80w - could I go to 125 or 150? Do I need the power - maybe not but does open new possibilities

I can send you both lpsu and dsp for testing if you think it is necessary.

[Tech_Marco]

Ha... my staff took off earlier July 3rd and worked on Monday. Me.. has to wait for a day or two before enjoying the short 'vacation'. It was fun and relaxing..

Anyway, back to the subject. Was the 2.14V happened on both Laser Output port? If it is, then the power supply is more suspicious. That's why I want you to detached the LPSU and measure the output direct from the DSP Output. If it varies from 0 to 5V (or closed), the DSP card is good.

For AWC608, user can setup the output power through LaserCad (software) or override it by using DSP. But for X7, I was told that this feature is no longer exist (not practical I guess). But you still can do manual setting on LCD to over-ride it though.

Until you can measure the output voltage without loaded (LPSU), it is not possible for me to determine who is the bad guy. Sorry, I won't touch your LPSU. Don't want to take liability unless you want me to fix it.

I forgot if you have mentioned the type of machine you're running. Is it a 40W or 60W? May be you can post pictures of your machine, the tubes so I can get an idea what do you have. Of course I want to sell more and make more $$$ but I won't recommend any if I do not know your machine well. I want a happy customer who purchase with confidence and feel good about "LO" My Priority


Marco

[funhawke]

As soon as I get back fri am I will send pics of tube. Here is some pics I have on lt:

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[funhawke]

hello Marco - I uploaded a video. the first part is using Laser2 with three variant power settings (LPSU disconnected) second part is laser1 and the third part was supposed to be laser2 again but I inadvertantly pulled out the plug for the x axis servo motor,

Both laser1 and 2 show no variance in power out.

Interesting or not...after each test the volt meter read 2.8 or something like that. When I turned power off the controller it went to zero - but only then. BTW I did test input to controller:24v

You asked for the specs of my machine - pictures above. I will post a pic of the tube. This is link to youtube wont be ready for another 1/2 hour due to slow internet... 7PM our local time(toronto time) . http://youtu.be/lIOIc-DDoQM

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[Tech_Marco]

Did you detached the DSP from the Laser power supply?

Marco

[funhawke]

Yes I did and sorry the link to the video just started to work.

http://youtu.be/lIOIc-DDoQM

[funhawke]

Next steps Marco?

[Tech_Marco]

I think you need to email our support for rma# and send me the card (LCD + connection board) to me for testing.

Marco