Can someone help with wiring power supplys to servo?

[onsatmex5]

I do not know where to start with wiring my power supply's to my servo board.

I have the instructions from Cambridge Technology but I simply do not understand them.

I understand "voltage +/- out" but I do not know what "sense terminal +/-" means.

I have attached what I would like to use for power supply's, and what Cambridge Technology says is the way to wire the servo.

I just don't know know to wire my power supply's to the servo based on the diagram they sent me.

I do not know anything about DC current!

Thanks for any help!

[mixedgas]

Does your PSU even have sense leads? Sense leads are used to compensate for Ohmic loss in conductors on long wiring runs.

+/- Sense are the feedback terminals for the power supply. If they are NOT connected properly, the power supply will DESTROY the galvo amps.

On each power supply, +S and -S should be right next to the + and - output terminals on the power supply. This is a option on high end power supplies , it is NOT on all power supplies. Tie +sense to +, tie -S to -. Then using a voltmeter, ensure that the power supply is outputting the correct voltage before connecting to the galvo amps.

You have not included enough data to answer your question. We are missing the terminal data for your power supplies. What model PSU did you purchase?

At this point I STRONGLY suggest you find a PLer near you with Galvo wiring experience before you try any connections.

I'm SHOUTING for a reason. You are at a place where it is easy to make expensive mistakes.

Steve

[onsatmex5]

Oh Boy........ did I buy the wrong power supply's?

Here is the link to the power supply's that I purchased.... they are single output +/- 24vdc 8.3 amp. The one's I purchased are called TOP-200-124

http://www.tracopower.com/products/top200.pdf

[mixedgas]

Oh Boy........ did I buy the wrong power supply's?

Here is the link to the power supply's that I purchased.... they are single output +/- 24vdc 8.3 amp. The one's I purchased are called TOP-200-124

http://www.tracopower.com/products/top200.pdf

No, those are fine. They do not support nor need Kelvin (Sense) connections. Your fine.

Steve

[onsatmex5]

What a relief that is....

"mixedgas" Thank you for taking a look and helping me out...."again"!

I really appreciate all the help!

[onsatmex5]

No, those are fine. They do not support nor need Kelvin (Sense) connections. Your fine.

Steve

So is this the correct way I should wire it?

Or am I NOT supposed to connect the + and - on the Power supply's ??

[mixedgas]

See Attached.

If you have never worked with 110/220 AC before, I again STRONGLY suggest you find some one who has. Things like correct wire size and insulation matter. Since your PSUs have Molex style pins I would suggest purchase of matching Molex connectors for safety and neatness.

This is the Cambridge drawing redone with the classic traditional/legal wiring colors.

Note addition of proper FUSE and SWITCH !

Additional Reading:

http://www.pangolin.com/resguide12.htm


Measurements done with all green wires connected but amps not connected:

A to B with Red Meter Lead on point A and Black Meter Lead on Point B should measure at least +24 Volts

B to C with Red Meter Lead on point B and Black Meter Lead on point C should measure at least -24 volts

A to C with Red Meter Lead on point A and Black Meter Lead on point C should measure at least +48 volts.7

Steve



Steve

[onsatmex5]

See Attached.

If you have never worked with 110/220 AC before, I again STRONGLY suggest you find some one who has. Things like correct wire size and insulation matter. Since your PSUs have Molex style pins I would suggest purchase of matching Molex connectors for safety and neatness.

This is the Cambridge drawing redone with the classic traditional/legal wiring colors.

Note addition of proper FUSE and SWITCH !

Additional Reading:

http://www.pangolin.com/resguide12.htm


Measurements done with all green wires connected but amps not connected:

A to B with Red Meter Lead on point A and Black Meter Lead on Point B should measure at least +24 Volts

B to C with Red Meter Lead on point B and Black Meter Lead on point C should measure at least -24 volts

A to C with Red Meter Lead on point A and Black Meter Lead on point C should measure at least +48 volts.7

Steve



Steve

Thank you for the redraw of the Cambridge Diagram and the pango link I have some reading to do!!

I contacted Cambridge about my understanding of their drawing, and asked them this >>>

"I have the pdf that you sent for the 673XX servo driver wiring to a power supply. I just do not understand what.....
out+ .... s+ ..... s- .... out- mean. And how it should be wired to "my power supply's"

Their reply back was....

"Every supply I have ever worked with had a voltage out terminal (out+/-) and a sense terminal (s+/-)"

That is all they said....

Then you told me >> "My power supply's do not support nor need Kelvin (Sense) connections" lol then I was even more confused!!


It looks like I "might" have it correct with the drawing I have attached....the thing that makes it confusing for me is there is only 1 "plug" as so to speak, on the "single servo board" that sends power/signal to both the X and Y galvo's

I am going to take your advice and "TRY" to find someone in my area "Augusta Maine" who is knowledgeable about this, and give them the info you have posted!


Steve How long have you been in this game.... you are very knowledgeable and very helpful to everyone here. "Thank You"

[mixedgas]

Well, since you have that noce dual amp, you can use this:

See attached.

You just have one of those new fangled dual galvo amps. Us old fogies are used to split amps, one for each axis.

I have been messing with lasers since 1986 or so.

I am a professional Joule Thief.

Steve

[LaNeK779]

a question steve, if i may threadjack a bit
if a power supply does have sense + / - and i leave this not connected, keeping my wires short (less than 50cm) is it ok or should i connect it anyway?

i had no idea what this did, just thought that it was some read-out feed and not a feedback loop