Re: Ademco 50P - Unable To Disarm

["Crash Gordon" <webmaster@xxxxxxxxxxxxxxxxxxxxx>]

yep 1000ma is 1 amp
If the siren is -500ma then you have a miracle siren, it's a typo should be
500 ma
expansion modules and keypads count too.
strobes draw a lot
you're way over

no not everything will go into alarm at the same time




"Don" <dedeaux@xxxxxxxxxxx> wrote in message
news:1149471556.498008.167310@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
| Household crises kept me from following up immediately.
|
| I took the easiest/quickest way for me to do the ballpark by
| calculating the max system alarm draw from each device's spec sheet.
| The total is either 9039.8 mA or 5039.8 mA.
|
| The difference arises from whether I add or subtract the draw of the
| internal alarms.  The four are Ademco Wave 2F.  The spec sheet SEEMS to
| say -500mA.If this can really be negative, the total draw is the
| smaller figure.
|
| Another thing is my assumption that 1 Amp is 1000 mA.
|
| Another assumption is that every glass break in the building would go
| off at the same time.  There actually are three max to a floor for six
| floors.
|
| As I mentioned in an earlier post, each item is its own zone in the
| star topology.Eight of the smokes are connected directly to the Vista
| 50P.  The remaining eight smokes, two COs and three heats go through
| two 4208 expansion modules to the panel.  All contacts and breaks go
| through another five 4208s to a loop extender which connects to the
| panel.
|
| The building renovation is incomplete so several items included in the
| computed draw, above, are not yet mounted though they are wired for. (5
| sirens, 1 strobe, 3 breaks, 4 smokes, 1 heat).
|
| As to auxiliary power, I guess not really.  Certainly not enough in
| light of these figures.  The only auxiliary power is the transformer
| for the loop extender.
|
| BTW, I misstated in an earlier post.  All seven keypads are 6160s.
|
| I will go to my local system parts supplier and find out whether they
| have AlarmSaf and/or Altronics power supplies with relay outputs for
| supervision.
|
| Any further advice or suggestions especially in advance of this
| purchase and installation is appreciated.
|
| Thanks.
|
|
| Crash Gordon wrote:
| > Well, sure that's true too, but may be more diff. for a diy...easier to
look
| > up all the spec sheets.
| >
| >
| >
| > "Nomen Nescio" <nobody@xxxxxxxxx> wrote in message
| > news:bf9678ee6b55826593e3b003b93e2316@xxxxxxxxxxxx
| > | Crash Gordon said:
| > |
| > | >Actually I think it's more practical to do the calcs on paper with
| > in-alarm
| > | >ma ratings of all devices.
| > |
| > | Battery and aux power calculations are great when you're designing a
| > | system, because it means  the installer goes out to the job with the
right
| > | equipment.  And of course, they're essential for commercial fire
systems.
| > |
| > | But when you have a system that is already installed, why calculate
when
| > | you can measure?  Want to know how much current your system draws
while on
| > | batteries?  Connect your meter in series with a battery lead and
| > disconnect
| > | the AC.  You'll know exactly, to a couple of decimal places, instead
of
| > | having an estimate.
| > |
| > | - badenov
| > |
| > |
|