Re: Ademco 50P - Unable To Disarm

["J Barnes" <trishnjames@xxxxxxxxxxx>]

The heat detectors dont draw any current.  So yes you can ignore them for
your calculations. You will still need a power supply to support everything
you have listed.  The only thing you hook to the polling loop of the panel
is the 4208 expanders.  The polling loop does not supply power, that is what
the aux power is for.  The aux power will support around 700ma which still
leaves you about 1.6 amps short for your aux devices.  You will need a power
supply for those devices.

The siren output is rated at 1.7amps this is usually only good for 2 1amp
sirens.  Do you need 5 of them?  If so you will need to power these from a
seperate power supply.  I would not use the polling loop extender unless
your expanders "4208" are more then 600 feet from your main control.  By
hooking the extender up to a transformer it prevents it from pulling any
current from the main panel but it is only capable of supplying an
additional 128ma to any devices.  Your smoke detectors pull 300ma which is
double the extender can support.  The smoke detectors should be ran to a
power supply or the control.  I would recomend using the aux on the control
for your smoke detectors.  This way if your power supply fails your smokes
will still be operational.  You will also need a way to reset the smoke
detecotors by either a button on the can or a 4204 relay module.  I would
also wire at least 1 keypad to the main panel.  In case of power supply
failure you will be able to operate "disarm" the alarm with this keypad.
There is a diagram in the install manual showing you how to wire an aux
power supply, you should be able to follow that.  Good luck with your
project.

James




"Don" <dedeaux@xxxxxxxxxxx> wrote in message
news:1149694747.967210.45530@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> Whew!  My thanks to everyone for your responses.  Although I am
> suddenly hesitant in my expectation of some pretty strong,
> ehh...ribbing, I will try here to respond to the messages since my last
> posting.
>
> The direction of the discussion here had already led me to the decision
> to rework my wiring in the panel closet as Ranger advises.  Combined
> with Crash's specific suggestions concerning power supplies and my
> assumption that such supplies have the terminals for 4-wire devices
> such as the smokes, I think I have a reasonable idea as to how to
> begin.
>
> I had read the manual several times which originally led me to the loop
> extender in order to maintain independent zones for each item since the
> Vista 50P could provide only eight zones in this design.  My life
> experience that manuals frequently leave out important information
> either as too basic or irrelevant appears, however, to have led me down
> a garden path in re the 4297.  This is where the folks here can groan
> or laugh, cry or....
>
> The 4-wire devices, including smokes, wired to the 4208U expansion
> modules have the data pair connected to the individual zone data
> terminals.  But then, the power pair from ALL such devices are together
> wired to the expansion module's power terminals.  This is to say that
> the terminals which supply power to the expansion module are "tapped"
> (if I can say it this way) by the smokes et cetera. So, yes, I have
> connected the 4-wire smokes to the polling loop but only (?) the data
> pair.
>
> I know it is a joke, but no one here has sold me anything nor did I
> have contact with anyone in this group prior to completion (ahem) of my
> installation.
>
> Yes, I got it that contact and relay ratings are not the draw and that
> waterflow, heats, and contacts do not draw at all.
>
> My google on Altronics led me to an Australian computer power supply
> company.  I will seek out the Brooklyn concern.  IIRC?
>
> Although I understand what is meant when I am corrected, a google on
> the term "DC transformer" turns up some interesting though irrelevant
> information.
>
> Thanks again to all.
>
>
>
>
> Crash Gordon wrote:
>> I have this discussion with a friend of mine at least 1x a month. Oye.
>>
>>
>> "Mark Leuck" <m..leuck@xxxxxxxxxxx> wrote in message
>> news:-82dnUMUgsgOwBvZnZ2dnUVZ_v-dnZ2d@xxxxxxxxxxxxxx
>> |
>> | "G. Morgan" <alarmpro@xxxxxxxxxxx> wrote in message
>> | news:0cec82djhj58sv8kaum65lsqpoj7dgbsc8@xxxxxxxxxx
>> | > On 6 Jun 2006 18:45:02 -0700, "Don" <dedeaux@xxxxxxxxxxx> wrote:
>> | >
>> | > >Right now most of the expanders get their power from the loop
>> extender
>> | > >which, in turn, gets its power via a DC transformer just as the
>> panel
>> | > >does.
>> | >
>> | >
>> | > There is no such thing as a DC transformer.
>> | >
>> | >
>> | > --
>> | >
>> | > -Graham
>> |
>> | Jake thought otherwise
>> |
>> |
>> |
>