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Power832 siren current?

Discussion in 'Security Alarms' started by Guest, Dec 4, 2003.

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  1. Guest

    Guest Guest

    I've got a question about the Power832's siren output. It's rated
    at 700mA continuous, or 3A with battery backup, so my question is:

    If you hook up a siren that pulls > 700mA, then what happens
    when the battery runs down and the main board can't supply
    all the needed current?

    Does it shut off the current-- and the siren-- or current-limit it,
    or what? If it's going to shut it off, then why would you ever want
    to use a higher amp main siren? Shouldn't you run a max 700mA siren
    off the bell output, then add additional high-power sirens with relays
    with one of the programmable outputs?


  2. Frank Olson

    Frank Olson Guest

    The answer to your question depends on several factors. How much more than
    the 700 mA's are we tallking here?? A 15 watt siren for instance?? The
    battery should never get into this state. If it becomes "run down", then
    all sorts of bad things can start happening (even without the additional
    load imposed on it by a larger capacity siren). You should load test your
    battery on an annual basis and replace it if it's over four years old. If
    you're thinking of running the siren for longer than the recommended four
    minutes, then I'd seriously think about using a second power supply
    (preferably supervised) and battery and powering a seperate siren driver
    (again supervised) through that.

    If your battery's "run down" and you're trying to power even a 15 watt
    siren, it could kill your control (depending on what you've got for keypads
    and ancillary devices). Remember the bell output is limited to 3 amps. The
    circuit interrupter will only open when you exceed this rating. The siren
    circuit on the DSC products is designed to draw any extra power it needs
    directly from the battery. If the onboard power supply can't handle it *by
    itself*, then your whole system will become compromised.
    Noise. Simplicity of installation. The siren circuit is supervised on the
    832. If you're not going to use it you have to put a 1000 ohm resistor
    across the terminals. Don't run your siren for longer than four minutes.
    Your system (even with a three year old battery) should be able to easily
    handle that without a problem.
    The 15 watt sirens sold by *any* distributor or on line dealer today are
    going to draw more than the 700mA "continous" output that DSC stipulates in
    their installation manuals regardless. The 832 will handle a 30 watt siren
    with no problem. I'd use at least an 8 AH battery if you're contemplating
    hooking up one this big. Most installers won't program your alarm (even if
    it's local) to continue sounding for longer than about four minutes. Most
    cities have noise bylaws you know!! :)
  3. Personal experience
    doing takeovers over the course of more than a quarter century in the field
    confirms this.

    Bass you are so full of shit that your eyeballs are consitently brown.
  4. Marc

    Marc Guest

    ioyupt gioph bn[';gvisdf[ gjkl
  5. Frank Olson

    Frank Olson Guest

    "The manufacturer"??? You mean "Glen", the guy who still hasn't emailed

    What "case in point", Robert??? Are you referring to another thread by any

    A "15 watt mini siren" still draws a whopping 1.25 amps... What's the
    matter, Robert?? Are you now advocating that *almost doubling* the "Bass
    called" maximum output is OK as long as it's "a 15 watt mini siren"??


    Yeah... what I said... "DSC tech support" comprises one mysterious guy
    named "Glen"... Sort of like your fictitious pilots... You stated in this
    very thread (and I quote):

    "It shuts down the output."

    You're sooOOoo full of schitt... You don't know diddly... The OP hasn't
    even told you *what* he's hooked up to the bell output and you come up with
    a "blanket statement" that infers *anything* over 700 mA is going to open
    the circuit protector... Well you're wrong, Bass... Anything over 3 amps

    Where has the OP said he was going to run an MVA-1000?? Where has he stated
    he's operating a PC1555... *READ THE QUESTION*!!!
    I *knew* you'd say that... Didn't I say that?? You're as predicable as
    bread mold...

    Oh... so I guess SkyRoute is going to shut down the system as well (and
    fail to communicate to the CS)... Dang, Robert... You're gonna have to
    recall *both* the DSC systems you've sold in the last six years...

    What??? BWhahahahahahahahaha!!!
    "Siren", "Bell"... It's an output circuit...
    There are several panels out there that aren't in compliance with the latest
    UL requirements. They were never intended to be...
    The recommendation from Bass to hook up a siren driver straight to the
    battery without benefit of an in line fuse or circuit breaker is
    *dangerous*. Hooking a siren driver that's going to draw no more than a 15
    watt siren (even less if you use 16 ohm max impedance) is no different
    (perhaps even better)... You really don't know what you're talking about do

    Translation: Bass doesn't know his ass from a GRI wide gap contact...

    Ahhh... Robert.... If they're "true" 15 watt sirens, then they'd draw 1.25
    amps at 12 volts... (V*I=W). I figure they must "rate" sirens like they do
    cameras... No two manufacturers can agree on how they define "low light"...

    Yep... Like powering visual appliances for "prolonged" periods...

    Where does it say "the bell output is has a maximum rating of 700mA" again??
    And what about SkyRoute?? Are you saying that the customer will lose all
    protection if he follows the manufacturer's installation instructions?? The
    ones that say the system draws 1.4 amps from the bell output when it's
    transmitting (and that's without a siren attached)...

    Oh... Is this *your* interpretation?? "Continuous" means exactly that,
    Robert... You don't have to run a *audible* device on the circuit... You
    can run up to 700mA worth of strobes or other indicating appliances
    *continuously* (for a prolonged period or until Jesus returns)... The DSC
    products aren't used for *just* burglar alarms, you know!!

    Which you can easily if you limit the speaker impedance to either 16 or 8
    ohms. I ran my MVA 1000 with 4 ohms (to see what would happen). *My wife*
    was the "circuit breaker" in this case, not the PTC device...
    You mean the fictitious "Glen", don't you??
    Correct... No one doubts this. The MVA 1000 using two 8 ohm speakers in
    parallel *did not* pop the breaker though, Bob... Try it yourself!!
    If it exceeds 3 amps, most definitely. I never "recommended" that (as much
    as you'd love to accuse me of it)...

    READ THE OP!!!
    Yes, Robert... TRY TO STAY ON TOPIC!!! This isn't about a PC1555 or the MVA
    1000. Neither were mentioned in this thread until *you* brought them up
    again... You were "soundly" (pardon the pun) thrashed once... Now you're
    back for more!!

    Nope... it's 3 Amps... (700mA continuous)

    We use minimum 12 volt 7.5 AH batteries... get them at awesome prices
    Actually haven't seen a "4" for a while... I mostly work on bigger
    You "assume" incorrectly. You "say" you sell full perimeter systems (with
    lots of glass breaks, smoke detectors, CO detectors)... and you go "cheap"
    on the back-up power... what a total maroon!!!

    Ain't it time you got out of the "field" and down to some real work for a
    change?? Quit playin' with the 'gators!!"

  6. petem

    petem Guest

    one little note about the pc 1555...

    if you draw too much current from the battery for a too long period the
    power supply of the panel will have a lot of trouble to recharge it...

    if it goes below 10 volt (for a 7 ah) the charging will create so much of a
    load on the power supply that it willl affect the over all alarm system

    it can even lead to a blow up of the rectifier bridge...

    seen that many times,after long period on the battery when power come back.
  7. Frank Olson

    Frank Olson Guest


    Interesting. We haven't experienced extended power failures in the part of
    the lower mainland where I live. I have several customers in Langley that
    have though. This must be a "quirk" of the 1555 because I've got a lot of
    older 1550's and 1575's out there. Most of the "city" customers have 832's
    and Ademco Vista 50's. I'm gonna have to try that with the 1555 I have
    here. Is this an issue that DSC is aware of??
  8. Frank Olson

    Frank Olson Guest

    Y'know.... I'm getting pretty tired of hearing this song, Bass... What's
    the name of my company?? What's the name of the distributor you say I
    "used" to work for (the one whom you "say" you contacted)?? You're a lying,
    low life, scum sucking piece of donkey dung that hasn't installed or
    serviced anything for years (if it all)... Everything you've ever posted is
    available for review on Google. All the lies you've told about your time in
    the trade and the participants in this (and other) group(s) are right out
    there as are your famous "Frequently Wrong Answers". Your mouth and your
    poison keyboard has gotten you into more trouble than Nixon and Watergate.
    At least he redeemed himself after that fiasco. You continue to add more
    schidt to the pile you're shovelling... Keep it up... Watch your sales
    dwindle as more and more people that post here find out what a *LOSER* and a
    *FRAUD* you really are...
  9. Now that is the pot calling the kettle black.

  10. petem

    petem Guest

    they are aware of it....they did change the rectifier bridge on the latest
    board revison..
  11. Frank Olson wrote
    With last month's fires here in San Diego County, some of my customers had
    extended power failures, some as long as 4 or 5 days. The only 832 panel
    that showed a problem was one made during the period when DSC installed a
    bad batch of bridge rectifiers. The rest are fine, so far. I did have to
    replace some batteries, most of which were over 3 years old anyway. One
    thing I miss about the Moose Z-1100 is the power supply. I probably have
    more Z-1000's in service that DSC 832's , and not a hiccup from any of them.
    (And yes, Mark, the communicators are still working.)
  12. Frank Olson

    Frank Olson Guest

    They're only lies according to you.
    What is??

    It's only "bullfrank" according to you. You have yet to post one shred of
    proof. You're also not in control of this newsgroup (surprise, surprise!).
    And you're the *last* person that should be telling anyone what to do you
    lying sack of schidt!!
  13. Mark Leuck

    Mark Leuck Guest

    Too bad the rest of the panel is junk :)
  14. Mark Leuck wrote
    Actually, it is a pretty good panel. Very dependable. There were a couple
    of minor quirks as with any panel, but overall very good.
  15. Frank Olson

    Frank Olson Guest

    "cutup circuit"??? Is that like "negative lift" or "angle of attack of the

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