You don't need a separate power brick, but I use one anyway so I can
cycle the remote on/off relay.
If you don't have a separate power supply, then when you cycle the N/O
relay to close on the reset contact, the power shuts off as you'd
expect, but once the site monitor loses power the N/O relay opens back
up and power comes back on. This is all fine and good except if you
have a device that takes longer to power down than the site monitor does
then that device won't actually reset. Giving the site monitor base
separate power means you can cycle the relay for 5 or 6 seconds and
expect everything to reboot.
The PSM24-BCM360S has a 'power ok' contact that you can input into the
switch contact on a site monitor and it will alert you when you lose
AC power. You shouldn't need to use a separate power brick. I know
that is the Rhino version, but I thought it was identical to the
Traco. Maybe we are talking about different devices?
On Sat, Apr 2, 2016 at 11:40 PM, Ken Hohhof <[email protected]
<mailto:[email protected]>> wrote:
OK, maybe that's right. I was looking at the spec sheet for the
TSP which says there is a remote on/off input. But maybe that's
the connector that goes to the BCM. I've never tried to use it as
a remote on/off. Maybe it could still be used that way with the
BCMU, since it doesn't control the TSP voltage the way the BCM does.
-----Original Message----- From: George Skorup
Sent: Saturday, April 02, 2016 11:51 PM
To: [email protected] <mailto:[email protected]>
Subject: Re: [AFMUG] Traco BCMU360
I'm not aware of a shutdown contact on a TSP supply. It has three "DC
OK" contacts on the top terminal block (C/NO/NC relay). I think the
2-pin header is an analog (or digital?) control circuit for BCM
control
only. When you hit the off switch (or remote shutdown) on a
regular BCM,
it sends the shutdown signal to the TSP through that 2-pin remote link
cable.
Maybe *I'm* missing something. I don't know, you're smarter than me.
On 4/2/2016 11:38 PM, Ken Hohhof wrote:
I'm saying the TSP has its own remote shutdown input, so you
could take a second relay output and control the TSP. I don't
know if you could parallel them.
-----Original Message----- From: George Skorup
Sent: Saturday, April 02, 2016 11:26 PM
To: [email protected] <mailto:[email protected]>
Subject: Re: [AFMUG] Traco BCMU360
No, the BCMU360 does not have the remote control capability
for a TSP
power supply. That's the regular BCMs. The 2-pin remote link
cable lets
the BCM adjust the TSP's output voltage as well as the
shutdown signal.
I typically wire up a SiteMonitor base with the pwr1 input
connected to
the main DC rail. And pwr2 gets a 12 or 24V brick for monitoring
utility. If I used the 'cycle' function on a relay, the base
unit is
still powered by the brick. In an outage situation, yes, pwr2
would be
dead, but it's still powered by the BCM. If at that point I
cycled the
relay that closes the shutdown contact, then yeah, the base
would shut
down immediately after that. All relays would return to their
normal
positions. Power would restore (whenever the hell they get
around to it)
and everything should come back up.
This is just theoretical, I won't actually be doing this. I
want stuff
to run as long as possible. Screw the batteries.
On 4/2/2016 11:11 PM, Ken Hohhof wrote:
If you are powering the BCMU from a TSP series power
supply, they also have remote shutdown.
I'm having a little trouble though wrapping my head around
the concept of remote shutdown if the device commanding
the remote shutdown (or the wireless gear and router that
gives you remote access) need power. How is that going to
work? I must be missing something.
-----Original Message----- From: George Skorup
Sent: Saturday, April 02, 2016 10:59 PM
To: [email protected] <mailto:[email protected]>
Subject: [AFMUG] Traco BCMU360
FYI on this thing. The "remote shutdown" contact is an
internal battery
disconnect ONLY. The regular BCM24/48/A is a true shutdown
and battery
disconnect. I'm glad I tested this at one of the BCMU
sites a couple
weeks ago. Close it, relay clicks, everything is still on.
Remove input,
everything shuts off. Restore input to bring everything
back up. Not
sure how useful this is. I suppose if you're paranoid
about ruining the
battery from deep discharge (has LVD though). Power is
out, close the
contact and everything goes down immediately. Power comes
back and it
*should* come back up. Should meaning whatever you have
closing that
contact doesn't make it permanent.
