What we have at most sites is a SiteMonitor Base and an injector or two
of some time. A couple old 4 ports, an 8 port, or a 4 port +
SyncInjector, etc. So a "couple" expansion modules is probably enough in
most cases. A few newer sites have the 5ch PDUs + 2 relay / 3 switch.
One site has the temperature controller module.
So, on the rack mount unit, if you could give me an expansion bus to add
the 2-relay / 3 switch module to monitor the DC UPS, or to add the temp
control module, etc, that would be awesome. Another idea is a third
voltage input for watching utility power with a dumb little power
supply. It wouldn't need to power anything, just monitoring only.
The other thing is shunts. I have some sites with shunts on the DC UPS
battery negative side so that when I get a utility outage alarm, I can
confirm that the site is running on battery. I've had numerous
situations where I get a utility restore alarm, but we're still on
battery, because the utility voltage is still <100VAC. That's so
annoying, but at least with the shunts I know what's going on.
On 3/8/2016 3:02 PM, Forrest Christian (List Account) wrote:
Oh, I don't think I finished replying to this one... if it's a dup,
just ignore this reply or the other one...
My intent is to build this with a standalone web interface and a SNMP
MIB which is designed for this device. This should enable a bit
easier management. I may consider adding an expansion bus output for
those of you who want to add on a module or two, but I haven't decided
about this yet.
I think the others I've pretty much answered, and for those I have I
haven't, your thinking is pretty much identical to mine.
On Tue, Mar 8, 2016 at 1:23 PM, George Skorup <[email protected]
<mailto:[email protected]>> wrote:
I could go either way. 4x4 for 16 or 6x3 for 18. More ports is
always cool. I guess whatever makes the most sense to you would be
fine with me.
This really comes down to being able to power just about anything
imaginable... except for Trango's crazy licensed POE scheme, power
consumption and -48. Which is fine, I'll do something else for those.
I can make use of the 12-port DIN mount at many sites. And this
rack mount for the bigger sites is icing on the cake. This will
let me get rid of all the fuses and really simplify the wiring. So
I'm in.
Are you planning for this to be a SiteMonitor + SyncInjector in
the same chassis all integrated? An expansion bus would definitely
be needed. Unless you're designing this more like the stand-alone
generator controller....?
On 3/8/2016 1:40 PM, Forrest Christian (List Account) wrote:
Well, it looks like it might actually be finally happening.
We are about 98% sure we have a rackmount enclosure manufacturer
which we can work with. Domestic. Product looks decent. Price
is right.
Which means it's time to nail down a few details here, such as
number of ports, so I can get some enclosures cut and boards made
and hopefully get this elephant out of the room....
So I need some input:
The rough figures I'm working with here is $800 for a 18 port
rackmount power injector. Voltage and pinning jumper selectable
per port. Per-port control of power and sync. Probably some
redundant power and other things built in, but I'm still nailing
those details down (a lot of it comes down to space on the front
panel of the enclosure).
PLEASE NOTE: The prices here are soft - until I get the design
completed I won't know what I can sell this for - as many of you
know I try to price things at a fair price as opposed to what the
market will bear.
The main questions I have for the list are:
Is 18 the correct number of ports? 18 is looking like about the
most I can fit based on front panel dimensions. This corresponds
to 3 blocks of 6 ports (if you lose a port and need to replace
it, you'd replace 6 at a time).
Other options are 16 (4 blocks of 4), and pretty much any smaller
quantities of ports which are divisible by 4 or 6.
I guess what I'm really asking here is whether the 18 port
version for $800 is the only version of this I should make or
carry, or does it make sense to sell (as an example) an 8 port
version for $400 instead of or in addition to this?
--
*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>
<http://facebook.com/packetflux> <http://twitter.com/@packetflux>
--
*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.packetflux.com/>
<http://www.linkedin.com/in/fwchristian>
<http://facebook.com/packetflux> <http://twitter.com/@packetflux>
