Unite 0V outputs from different power supplies

[Haritztolete]

Hello

We are making some changes in an installation, and there are some
machines, everyone with its power supplies, +24VDC and +5VDC. I would
like to unit the 0V signal of all the power supplies in order to use
any power supply present in the installation. Is it enough to unit
physically all the 0V outtputs? Can I have any problem doing it?

 

[Dan Hollands]

Hello

We are making some changes in an installation, and there are some
machines, everyone with its power supplies, +24VDC and +5VDC. I would
like to unit the 0V signal of all the power supplies in order to use
any power supply present in the installation. Is it enough to unit
physically all the 0V outtputs? Can I have any problem doing it?

In general it doesn't sound like a good idea but you didn't provide enough
info

How much power, how would the power supply from one machine power another.
You can NOT just ties the +24v and +5v from each machine together. What is
being powered - electronics of some kind presumably. What kind of distances
are involved.
Why do you want to do this?

Dan
--
Dan Hollands
1120 S Creek Dr
Webster NY 14580
585-872-2606
[email protected]
www.QuickScoreRace.com

 

[Jan Wagner]

Haritztolete kirjoitti:

We are making some changes in an installation, and there are some
machines, everyone with its power supplies, +24VDC and +5VDC. I would
like to unit the 0V signal of all the power supplies in order to use
any power supply present in the installation. Is it enough to unit
physically all the 0V outtputs?

Very generally speaking, yes, it is possible to use a common 0V
(ground/GND) for devices and some supplies. For a common ground you
might use heavy copper braid or copper bus bars.

If it actually is a good idea depends on your setup.

Paralleling the outputs of the PSUs (+24's together etc) however is
rarely a good idea.

Can I have any problem doing it?

Potentially, lots of But it depends on PSU type, what power levels
we're talking about (machines & PSUs), distance, stationary or moving,
is there (non-balanced or non-isolated) signalling between the machines,
etc.

- Jan

 

[Jasen Betts]

Hello

We are making some changes in an installation, and there are some
machines, everyone with its power supplies, +24VDC and +5VDC. I would
like to unit the 0V signal of all the power supplies in order to use
any power supply present in the installation. Is it enough to unit
physically all the 0V outtputs?

Can I have any problem doing it?

If the 0v outputs are already connected to the protective ground then there
will be no harm caused.

If not you could have short cuircuits, ground loops, and all sorts of
problems appear with this setup.


Bye.
Jasen

 

[Homer J Simpson]

We are making some changes in an installation, and there are some
machines, everyone with its power supplies, +24VDC and +5VDC. I would
like to unit the 0V signal of all the power supplies in order to use
any power supply present in the installation. Is it enough to unit
physically all the 0V outtputs? Can I have any problem doing it?

Generally, avoid this. It can cause problems. If you really MUST do it, get
someone who is skilled at solving problems with paralleling and with ground
loops to assist you.