The new little SyncBoxes look awesome!
So the old 10/100 SyncInjector is gone? Damn. Oh well, guess we need to
start using the new stuff anyway.
On 7/15/2016 1:57 PM, Adam Moffett wrote:
I like the compactness of the PDU, so I can live with that limitation.
------ Original Message ------
From: "Forrest Christian (List Account)" <[email protected]
<mailto:[email protected]>>
To: "af" <[email protected] <mailto:[email protected]>>
Sent: 7/15/2016 2:34:35 PM
Subject: Re: [AFMUG] -48 PDU
The pdu design will be ground specific. The solid state relay design
will be isolated so it doesn't matter.
On Jul 15, 2016 7:47 AM, "Adam Moffett" <[email protected]
<mailto:[email protected]>> wrote:
Will the -48 PDU be strictly positive ground, or is it floating?
I.E.: Could I stock the one PDU for either type of loads, or
would I have to have separate +V and -V PDU's?
------ Original Message ------
From: "Forrest Christian (List Account)" <[email protected]
<mailto:[email protected]>>
To: "af" <[email protected] <mailto:[email protected]>>
Sent: 7/12/2016 5:08:55 AM
Subject: Re: [AFMUG] -48 PDU
I have around 10 or so new/revised products which will be
shipping over the next few months. (4 of the ones in our
backlog have just started shipping the last couple of weeks, and
others are coming off the pipeline shortly).
At least two of the coming products are intended to fix the lack
of -48VDC support. One of which is the addition of a 5PDU for
-48VDC (which is able to be powered from the -48VDC power source
so it doesn't need a base unit). The other one I can think of
right now is there's a 6 channel solid state relay coming as
well. Both will switch -48VDC at at least 3A. The PDU has a
maximum-all-channels limit of I think 8A. The SSR module will
not have this limit.
I can build a -48VDC PDU on the existing board: To date I have
not had any customers ask me to do so once I have explained that
this module would have to be connected to a base unit, and
rebooting or losing the power to the base unit would result in
all of the -48VDC loads attached to the PDU being shut off
during the power loss or reboot. This is also the reason it is
not currently on the website as an option.
On Mon, Jul 11, 2016 at 8:11 PM, George Skorup
<[email protected] <mailto:[email protected]>> wrote:
I asked Forrest about doing a -48 version of the 5ch PDU. He
said it would need some tweaking since the PDU itself is
powered by the main input, kinda like a SyncInjector.
Depending on your current, you could use a regular 4-relay
exp. module to switch the hot wire for each device. Should
be able to handle about 1A @ 48VDC. Next question is, would
a -48 version of the PDU support say 1.5A per port? I know
you can set the per port limit to 3000mA, but I'm not sure
if it'd be capable of that between 44 and 58VDC. I want to
say I remember him saying 1.5A should be OK.
I have some Trango licensed radios that I'd like to get on
remote power control, but so far there's nothing to handle
them. Nothing that I like anyway. And the problem there is
the damn 75-80 watts of power they use.
On 7/11/2016 7:30 PM, Adam Moffett wrote:
Is there a relatively cheap device that can take 48v in and
switch a handful of -48vdc loads on and off?
I'm thinking like $100-200 kind of cheap. Small and DIN
mount would be best.
The packetflux PDU has a negative ground, so that's already
out.
--
*Forrest Christian* /CEO//, PacketFlux Technologies, Inc./
Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602
[email protected] <mailto:[email protected]> |
http://www.packetflux.com/
<http://www.linkedin.com/in/fwchristian>
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