DSP 2012 power supply requirements

[Toymanf]

Hello all,
I have just received my new 2012 dsp controller from Lightobject.
Can anybody give an argument against using a regulated 12volt 1.5 amp wall wart power supply for the controller.
The specs for the card list 12-36 volts, so I suspect it should work just fine.

I hope to use the existing 24v supply for the steppers.(I am converting a 40 watt import laser as a stepping stone to a larger platform)
The 24v supply is an open frame design and looks marginal at best for the steppers.
I have 2 Gecko 203v stepper drivers and am familiar with the stepper interface requirements.

I welcome any input or advice you may have on the subject,
Frank

[Greolt]

Frank

Info like this is a bit light on for the DSP.

The only connection diagram that I have found with any power requirements shown on it, shows 9 to 32v at 1 amp.

Other documentation shows 24v, but I think that is just that the author was using 24v and had not considered others might not do the same.

See attached PDF. So the 12v power supply that you have should be fine.

As I am sure you know the Gecko G203V drive require connection of, step, direction and common or ground.

None of the supplied info addresses this but I have had it directly confirmed from the DSP engineer, that this is supported. As you would expect.

Greolt

[Gadroc]

I'm fairly certain that the 2012 DSP requires 24v power supply. The board and wiring diagrams are all labeled 24v if I remember correctly. I'll verify later this evening when I get home.

[Speedythinker]

For sure 12v 1A is good，even 9v is ok.

I tested it with 12v and it drawed 0.65A or around. I recommened 24v becauseost driver work better at 24v. But I will confirm the max volt; 32v or 36v


Marco

[Gadroc]

Good to know!

[Toymanf]

Thank you for all of the feedback. I am currently powering it with a 24v switching power supply from an old hp printer. It is working perfectly fine with this.

As I am sure you know the Gecko G203V drive require connection of, step, direction and common or ground.

Thanks for the reminder about this Greolt. I will have to hook them up and try them.
Do you know if they will work using the step, dir, and common ground outputs of the dsp. I would think they will just trigger on the opposite edge right?

Frank

[Greolt]

Do you know if they will work using the step, dir, and common ground outputs of the dsp. I would think they will just trigger on the opposite edge right?

Yes the DSP engineer confirmed that this common driver connection method is supported.

Rising or falling edge is selectable in the DSP setup, under Manufacturers Parameters.

Greolt

[Speedythinker]

Confirmed with the engineer that the card can take DC9V~36V. The engineer recommended 24V 2.5A even though my test was showing 0.65A at 12V. (I'll double check it tomorrow with 12V and 24V)

I guess he was concerning the power the card consumed when the card was running in 'full' gear; X,Y,Z,U,air pump,...etc. If you're using X,Y with one laser output, 12V~24V 1A should be good enough. He also mentioned that if you're using switching power supply , do not power it by 36V as switching power may output high as 40V. I'm not quite sure about that. May be he was concerning the glitch that may be output from low quality switching power supply.

Anyway, let's play it safely. let's power it by DC12V~32V 1A, and 24V 2.5A is recommended

Marco

[Greolt]

Good information. Thanks Marco.

Greolt

[Toymanf]

Just an update. I ended up using a 24v switching supply for the controller input. Did not try the 12v.
I am driving my Gecko 203v stepper drives from a separate 36v switching supply.
The Geckos are connected to common ground for the step, direction signals and work properly.

Thanks for all the feedback,
Frank