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MVA-1000 Voice Alert

L

Larry Nabors

Can someone please send me a diagram or instructions as to how to connect a
Napco MVA-1000 Talking Siren Driver to a DSC PC-1555MX system. Thanks for
any help. [email protected]
 
G

G. Morgan

Larry Nabors said:
Can someone please send me a diagram or instructions as to how to connect a
Napco MVA-1000 Talking Siren Driver to a DSC PC-1555MX system. Thanks for
any help. [email protected]

Hi Larry,

From the DSC panel wire the siren output positive (terminal 6) to the
Blue wire labeled E1 on the driver (burg. trigger).

From the DSC panel terminal 3 goes to the black wire and terminal 4
goes to the red wire on the driver. This is constant 12V of power for
the driver.

The speaker connection is obvious on the driver.

You can also wire a 24 hour open loop (alarm on short) to supervise
the speaker wiring by attaching that zone to the Violet and Black on
the driver.

The resistors in the upper left-hand corner are for language
selection, they are all intact for English only messages, cut C for
Spanish and English, cut B for French and English, B & C for Spanish,
English, and French. I think the French message says "I surrender!"
;)

Hope this helps,
-Graham
 
F

Frank Olson

G. Morgan said:
"Larry Nabors" <[email protected]> wrote in message

Hi Larry,

From the DSC panel wire the siren output positive (terminal 6) to the
Blue wire labeled E1 on the driver (burg. trigger).

From the DSC panel terminal 3 goes to the black wire and terminal 4
goes to the red wire on the driver. This is constant 12V of power for
the driver.

The speaker connection is obvious on the driver.

You can also wire a 24 hour open loop (alarm on short) to supervise
the speaker wiring by attaching that zone to the Violet and Black on
the driver.

The resistors in the upper left-hand corner are for language
selection, they are all intact for English only messages, cut C for
Spanish and English, cut B for French and English, B & C for Spanish,
English, and French. I think the French message says "I surrender!"
;)


Don't forget when you cut "D" it's the Belgian (Flemish) message which says:
"Get out with your Cowboy smell..." ;-))
 
F

Frank Olson

Robert L. Bass said:
The MVA-1000 draws too much current to be wired directly to the PC-1555MX in
the conventional manner. There are several methods that can be used to make
it work. Here's one:

Please *do not* follow the advice of Mr. Bass in this instance. The DSC
PC1555 is perfectly capable of driving up to 3.0 Amps through the siren
output for a short period as long as the back up battery is attached.
Anyone that has sold and *installed* DSC products is aware of this.
Connecting *anything* directly to the battery leads without a proper fuse is
both dangerous and stupid.

The module doesn't require continuous 12 volt power and will definitely blow
the aux power fuse just on it's own. You can wire both the red and black
terminals to siren output + and - respectively. You can also wire the blue
wire to Bell +. Follow the instructions for cutting Jumper E. If before
initiating any alarm, there's no voltage between Bell + and Aux -, don't cut
the jumper. If there is, then cut the jumper.

Program the panel to give a pulsed bell output on fire and a steady output
on burglary.

The 1555 already provides a "pulsed" output for fire and a steady for burg.
Programming this feature is both unnecessary and physically impossible.
 
G

G. Morgan

Cowboys don't smell. But I hear Belgians do, must be all the
perspriation caused by the foil hats and suits.
 
G

G. Morgan

Cowboys don't smell. But I hear Belgians do, must be all the
perspriation caused by the foil hats and suits.
 
M

Mark Leuck

Frank Olson said:
PC-1555MX

Please *do not* follow the advice of Mr. Bass in this instance. The DSC
PC1555 is perfectly capable of driving up to 3.0 Amps through the siren
output for a short period as long as the back up battery is attached.
Anyone that has sold and *installed* DSC products is aware of this.
Connecting *anything* directly to the battery leads without a proper fuse is
both dangerous and stupid.

I have to agree with Robert on this, I would wire it to the battery instead
 
F

Frank Olson

fuse

I have to agree with Robert on this, I would wire it to the battery
instead


Without a fuse?? You've been sniffin' too much printer ink... :)
 
F

Frank Olson

Sigh... Here we go again...

Mark is wrong. The MVA-1000 is not a dialer. It's a siren driver.

Olson is wrong, too. The panel is not designed to handle a high amperage
load. Doing so even for a few minutes places you in danger of having your
panel's power output shut down until the load is removed. That can and will
disable your protection.

Your stupidity in making this remark alone outshines a one thousand watt
bulb, but I'll let you rant just a bit more before I start quoting "chapter
and verse"... The panel's bell outputs *CAN* handle the MVA-1000 without
any special modification or the use of external relays (which only
complicate a really simple answer).

Next time you want to attack me I suggest you at least read the installation
manual. Even someone like yourself who has never installed alarms for a
living can learn but you need to open your eyes and shut your mouth. Notice
how the installation manual specifies a maximum of 700 mA (Note to Frank:
That means 0.7 Amps; NOT 3 Amps or more.).

Yes, Robert, I noticed that part of the installation manual. I also noticed
this statement on page 3 headed "Getting Started Section 2" under "Bell
Output Terminals - BELL + and BELL -" and I quote:

"Please note that the Bell output is protected: if too much current is drawn
from these terminals (such as a wiring short), the Bell PTC will open.
Three amps can be drawn for short periods only."

The "Bell PTC" device will protect your panel's OUTPUT (or bell) circuit.
This can *NOT* and will *NOT* "disable your protection".

Furthermore, the panel's power supply is rated for a maximum of 1.5 Amps.
Loading it with double that is a good way to void your warranty and damage
the circuitry.

Nope. BZZZTTT!! Wrong again! First off, the panel's power supply rating
has absolutely *NOTHING* to do with the devices attached to the BELL
terminals. The panel could handle a 2 AMP load across the bell terminals
quite comfortably as long as the battery was connected. You see, DSC
*designed* it that way, so you could power a couple of siren drivers with no
problems. It won't "void the warranty" or "damage the circuitry".

Olson is recommending that people load the circuit to more than four times
its rated ampacity.

I NEVER "recommended" that, Robert. Simply pointed out something in the DSC
PC-1555 (and the 1575) Installation Manual that you obviously have never
read. You're losing track of what the OP asked in the first place in a
blatant attempt at trying to discredit me.
I normally ignore his bad advice but this one was
likely to cause someone to damage their protection.

Nahh... You have a hard time "ignoring" anything to do with what people
post in this group, and even more so the ones that don't agree with you or
with the methods you use to market your mantra in the group. If you're
going to try and attack someones credibility, you should have all your facts
straight first... This isn't the first time you've been slam dunked (you
don't know diddly when it comes to aeronautics either). For instance, when
I say that "you're so full of schitt you're leaving a trail as wide as your
ass when you roll across the floor", people here will simply nod their heads
and say... "Uh-huh! That Olson knows what he's talking about!"
Most of the time the
self-restoring circuit breakers will do simply power the DSC system down
when someone does the kind of thing Olson suggested.

Wrong again. If you draw too much current through the bell circuit, the
"self-restoring circuit breaker" will only interrupt that particular
circuit, not "power down the whole system"... You really don't know what
you're talking about do you??
The Imagine if some poor
fellow followed Olson's advice and his alarm started with a burglary,
followed by a fire. The overloaded bell output would defeat the system so
that no fire alarm could ring. At the very least a home could be lost to
fire because of Olson's advice. At worst, someone might be killed.

In this particular "scenario", I suppose the burglary siren (which would run
continuous) isn't going to wake anyone up?? And what about the keypad
sounders?? DUHHHHH!!!! Besides, the MVA-1000 doesn't even draw close to
three amps. It certainly would have NO PROBLEM being connected the way I
recommended (and still do). Don't forget, the issue isn't whether or not I
"recommended" using the full available three amps. The question was how to
connect the MVA-1000 to the DSC products.

You simply can't admit that YOU'RE WRONG, can you??

I did omit mentioning the inline fuse, though that is mentioned elsewhere in
my FAQ. You should *always* use an inline fuse or (better) a self-restoring
circuit breaker when wiring anything directly to the battery leads.

Sure Robert... You "omitted" mentioning the inline fuse (tantamount to *NO
PROTECTION*) on a device that could pump out 30 Amps easily, heat the wire
enough for the insulation to start on fire, destroy the common control and
continue providing sufficient heat to spread the fire into the hole you've
cut in the drywall (for your wire runs) and the wooden stud the panel's
anchored to. Not only would the customer lose the security protection
afforded by the system, fire detection devices powered by the same system
would be rendered useless as well. The fire would quickly spread up the
inside and outside of the sheet rock (which is covered in paper, and quite
possibly oil based paint on the outside). Do you even have "errors and
omissions" insurance?? Or are you simply going to "fold your tent" and
start elsewhere?... Ooops!! I forgot... you already have... Why is it
you've opened Bass "Bungled" Alarms again???
 
F

Frank Olson

Robert L. Bass said:
From the PC1555 installation manual wiring diagram on page ii: "Bell / Siren
700 mA Maximum" They actually printed it in full caps to emphasize the
point.

So what's your point?? Where did I "recommend" the client max out the
available current through the bell outputs?? I simply stated that
connecting the MVA-1000 to the bell outputs shouldn't be a problem for the
panel to handle. Even a current draw of 2.4 amps is a full 600 mA less than
the "max allowable". And *where* in the OP's question did he include
strobes?? You're such a weasle, Bass. You twist and turn faster than a
Michael Jackson used to... I'll bet you send each other Christmas cards
too...

You read it in my FAQ *after* I told you about it.

No... I know it from experience and it's available for anyone to read it in
the *INSTALLATION MANUAL* for the PC-1555, and PC-1575 (as well as the older
panels in the DSC line-up).

By overloading the bell output you are disabling it. THINK!!!

You stated it would disable the entire panel. This is *not* true. Besides,
we're not talking about maxing out the available current throught the bell
output, Robert. No matter how you slice it you're still trying to cover up
the fact that you *missed* reading that in the manual (or your FAQ, which is
even more difficult to comprehend).

"Bell Output Terminals - BELL+ and BELL-"

"These terminals provide up to 700 mA of continuous current at 12 VDC for
powering bells, sirens, strobes or other warning type equipment. Connect the
positive side of any alarm warning device to BELL+, the negative side to
BELL-. Please note that the Bell output is protected: if too much current is
drawn from these terminals (such as a wiring short), the Bell PTC will open.
Three amps can be drawn for short periods only..."

Bravo... You got it, Mr. Samson... Now take a deep breath and let go of
the pillar...

"... For UL installations, when a bell or siren is used for fire signaling
with a pulsed cadence, it must be connected between the AUX+ and BELL-
terminals... A fire bell or siren used for this application must be UL
Listed and have a current consumption of 400mA or less (e.g. Wheelock
MT-12/24-R)."

Excuse me?? Where did the OP mention he was doing a "UL installation"?? Do
you even know if he's qualified to?? Have you checked his credentials??

It will shut down the bell / siren output. That effectively disables the
alarm.

Nope!! Sorry... The keypad sounders will still be available... not to
mention the panel will still communicate both the alarm and "fuse" trouble
to the CS. Again... I'm *NOT* "recommending" utilizing the full available
output current from the system. I'm simply stating that you can hook up the
MVA-1000 to the bell terminals with *no problem* as long as you don't exceed
the rated "3 amps for a short period"...

Oh., really? Where did you think the power for the bell terminals comes
from?

The battery, Robert... The battery... Talk to DSC tech support... They'll
set you straight... You'll have to call in with your buddy's ID though...
I understand they won't give *you* any info...

You're changing your tune, Frank. First you advised unsuspecting readers to
connect a 3 Amp load to a 700 mA output.

Never said that. I did state that you could hook up a siren/bell that would
draw up to 3 amps for a short period. My point (which you've still managed
to miss) is that the MVA 1000 can be driven directly from the bell outputs
of the DSC 1555 or 1575 panels (or any of the older panels for that matter
as well).
Now you're slipping down to a 2
Amp load. The old Olson Twist is starting again. Chubby Checkers would
turn over in his grave.

Sorry, Robert... I ain't the one "twisting" here...

... other than the system giving NO AUDIBLE at all as soon as the PTC opens.
:^)

Which wouldn't happen in the case in question (the OP's MVA-1000).

From your original recommendation: "The DSC PC1555 is perfectly capable of
driving up to 3.0 Amps through the siren output for a short period as long
as the back up battery is attached."

That wasn't a "recommendation" by any stretch of the imagination, Robert...
It was a statement of fact. You've gotta start reading better than you
do...
You mislead people by holding yourself
forth as an expert here.

Excuse me?? Where have I done that, Mr. "Frequently Wrong Answers"??
Aren't you the one posting FAQ messages in a professional forum (in
violation of the group's FAQ)?? Aren't you the one who holds himself out to
be the "expert" on all things related to aviation and security??

That makes anything you claim can be done without
hazard a recommendation.

Really?? Only in your own sick mind, Robert..
You are not an expert.

I've been in the trade for going on 20 years now... and I'm still
learning... That's the challenge of working in this industry. You run into
something "new" every day. The bell output specs for the DSC products have
been out for years. If you ever took part in one of their panel seminars
you would have known about it (perhaps even had it demonstrated like they
did here in Vancouver).
You're not even an
installer and never have been.

You're so full of "schitt" it's a wonder you can even talk without spewing
it it all over the room...
You post this sort of crap out of personal
animosity, completely ignoring the fact that in so doing you mislead readers
into doing things that can and will disable their protection when they need
it.

You post *this* kind of crap (personal attacks) for exactly those reasons.
You're an uninsured, unbonded, unlicensed, parts pusher with a felony
conviction who barely managed to avoid a manslaughter charge in a tragic
accident caused when you fell asleep at the wheel. Your one constant
"whine" when we talked on the phone was that I should list your site on mine
(like you managed to talk Mike into)....

I simply pointed out that you recommended connecting a siren driver directly
to the battery terminals *without a fuse* which should *NEVER* be done (by
either the professional you say you are or someone offering a solution to
the OP's question). You're one sick puppy Bass... Still trying to "cover
your sorry ass" by attacking me... What a jerk!!!

Discredit you? You're the one who started the crap. I gave the OP a proper
answer and you respondede with a flame. I don't need to discredit you.
You do that all by yourself.

Bwahahahahahahahaha! You told the OP to connect the driver directly to the
battery leads. What a blatantly irresponsible reply (not to mention *bad
advice*) that was. Now you're trying to "cover up" by saying I
"recommended" you can draw up to three amps from the bell outputs. What a
lying piece of "schitt" you are!!

Most of the reactions I've seen indicate otherwise.

Where?? In this group??

See, there's the difference, Olson. I tried it and the system opened the
breaker. No siren. No bell. Nothing. Other than the keypads there was no
sound at all. If you ever actually installed any of this stuff you'd have
the opportunity to find out.

Yeah... like you have a DSC 1555 sitting right there... What a maroon!!

If you draw too much current through the bell circuit,
the "self-restoring circuit breaker" will only interrupt
that particular circuit, not "power down the whole
system"...

Disabling the siren... [sigh]

*YOU* stated it would "power down the whole system"... The forgoing was a
direct quote... You should take the time to read your own responses before
opening your fat yap to criticize me.

The problem is you don't uinderstand that a disabled bell output shuts down
the siren. You're recommending that a device be conne3cted to the bell
output which will make the bell output stop working.

The MVA 1000 will *NOT* shut down the bell output. The OLDER DSC boards had
a five amp fuse on the siren circuit, Robert. (DSC PC-2550, 3000, 1500,
2000, 2500). It was never "recommended" that you load it up to the max, but
because of the way DSC *designed* the bell circuits, they are able to draw
power straight from the battery (not the aux power supply).

system

That depends on how fast the overload opens the breaker. The MVA-1000 siren
driver draws 2.3 Amps with two 8-Ohm speakers in parallel. If the gentleman
also runs a couple of strobes he's approaching 3.0 Amps.

Which the panel is perfectly capable of supporting for a short time. It
says so right in the manual, Robert. Besides, the OP didn't mention that
any other *OUTPUT* devices were being contemplated in this instance.

So it's OK to wreck the siren hookup because the keypads will still beep?


Where have I said that, you jerk!?!? I simply stated that *in your
scenario* the whole system wouldn't shut down if the bell output was
exceeded (which you stated clearly it would). What if the outputs got
shorted (like could happen if an external siren was vandalized by a burglar
before he got in the house)?? The protection afforded by the system would
still allow the keypad sounders to function *and* the system to communicate
alarms/troubles to the CS.

Oh, so now you *are* recommending. A few lines back you tried to dodge
that.

How about you post the entire sentence, bAsswipe??

The panel doesn't have any "available 3 amps." It has a 1.5 Amp power
supply. Anyone in his right mind would never do what you recommend.

Heh, heh, heh... Still having problems reading the manual, Robert??

Sure. I have plenty of times in the past. But in the present case you are
wrong. I don't recall you ever admitting an error though.

You've had me "plonked" for so long, how would you know??

See. That's an admission of error. I forgot to include that in my original
post. I'm glad you pointed it out. Now, when are you going to admit that
it's a bad idea to connect a load four times the rated output?

Too late, Robbie... It seems to me that your "omission" could have resulted
in serious personal injury to the OP, not to mention anyone else stupid
enough to follow your advice. And what would you "rate" the output, when
the manual states clearly that you *can* draw up to three amps for short
periods. Note to newbies: The "period" available depends on the state of
the system's battery. If it's an older 12V4AH, you may not have very long,
if it's a newer 12V7AH, then I'm confident you can run the MVA-1000 for the
full four minutes that's usually programmed before bell cut-off.

One of the reasons I usually refer people to my FAQ is that the discussions
there tend to be more thorough.

What "discussions"?? You don't even answer your emails. You've had
numerous complaints filed with the Clearwater Better Business Bureau. One
of the dumbest things I've seen you post is the "explanation" where you
stated that the Bureau told you to sell goods to a customer that you didn't
want to have anything to do with or get hit with a bad report... *That* was
not only laughable, it was a blatant example of the sick, twisted,
conniving, *FRAUD* you are.
I often go over those three or four times,
making additions and corrections before I post them to my web server.

The reason for that is that you don't read very well... And even so, your
"FAQ's" are still fraught with errors.

Sometimes I get an idea from something someone else has done and add it to
the pages (with attribution if I know who the person is).

Oh?? Where's the "attribution" to Jim (Alarminex) for the Anderson
windows?? Even if you *don't* use his exact words, he did provide you with
the "inspiration" for the FAQ. I've written several myself and given you
credit for at least one...

http://www.yoursecuritysource.com/wiringwallfaq.htm

Mostly I discuss
things I learned over the 26 years I've been in the trade.

Yeah... heard that before... Funny how you can be "26 years in the trade"
when you haven't touched the tools for going on seven of them, were
*unlicensed* in CT for nine years while you "ran your small central station
alarm company"... No wonder you can't get licensed in Florida. They
wouldn't let you write the challenge exam with *NO* previous certifiable
experience. The criminal record doesn't help either, does it? And I'll
just bet the BBB report from Clearwater will do a lot toward convincing
anyone on the board that you're "honest and trustworthy" and of "good
character".

http://www.clearwater.bbb.org/commonreport.html?bid=41001663
 
F

Frank Olson

You're dancing again.

Nope. Asking a straight forward question, which you've decided not to
answer.

SooooooOOo... I'll do it for you. Here's what I said:

"Please *do not* follow the advice of Mr. Bass in this instance. The DSC
PC1555 is perfectly capable of driving up to 3.0 Amps through the siren
output for a short period as long as the back up battery is attached.
Anyone that has sold and *installed* DSC products is aware of this.
Connecting *anything* directly to the battery leads without a proper fuse is
both dangerous and stupid.

The module doesn't require continuous 12 volt power and will definitely blow
the aux power fuse just on it's own. You can wire both the red and black
terminals to siren output + and - respectively. You can also wire the blue
wire to Bell +. Follow the instructions for cutting Jumper E. If before
initiating any alarm, there's no voltage between Bell + and Aux -, don't cut
the jumper. If there is, then cut the jumper."

This wasn't an attack on you, Robert. Simply a warning not to heed your
advice as you advocated connecting the driver directly to the battery
without the benefit of a fuse. It also pointed out that you could connect
the driver straight to the bell outputs without having to purchase
additional relays, etc.

You recommended going way beyond the available current.


And you were simply wrong. Perhaps if you bothered to read the manuals
you'd avoid this sort of problem. Even with only one 8 Ohm speaker that
driver draws more current than the PC1555's bell output is rated to
deliver.

You should really read what you yourself have quoted from the manual.

"Bell Output Terminals - BELL+ and BELL-"

"These terminals provide up to 700 mA of continuous current at 12 VDC for
powering bells, sirens, strobes or other warning type equipment. Connect the
positive side of any alarm warning device to BELL+, the negative side to
BELL-. Please note that the Bell output is protected: if too much current is
drawn from these terminals (such as a wiring short), the Bell PTC will open.
Three amps can be drawn for short periods only..."
Unless of course you actually want the system to work. In that case try
following the manufacturers' instructions.

I have, on many occasions connected a 30 watt horn to the bell output of
many DSC panels (2000, 2500, 2550, 3000, 1500, 1550, 1555, 1575) with no
problems. That draws 2.5 amps. As long as the battery connection is
maintained, the four minutes normally programmed for the siren to operate
doesn't present any noticable problems. *And the fuse won't blow either*.



The panel installation manual says the maximum allowable load is 700 mA --
NOT 3.0 Amps. You don't seem to understand the difference between what the
panel can handle for a few seconds and what it can deliver as a regular
load.

Read the manual again, Robert. And as long as the battery is good, you
won't have a problem drawing 2.5 amps for four minutes. I don't quite see
the difference between drawing 2.5 amps directly from the battery (in your
example) and having the panel draw it through the bell terminals in mine...
In your example, the driver's unprotected. In mine, the panel's 5 amp fuse
is there to "save the day"...
The MVA-1000 can not be connected to the PC1555 in the manner you recommend
with or without strobes. If you had any experience in the trade you'd know
that.

Ahh, but I do have loads of experience working with DSC products. You, on
the other hand don't. Stick with Napco. Their manuals are a lot easier to
read.

Unfortunately, you don't understand what the manual says. That's because
you never installed alarms.

Tsk... Says the man who still insists on programming a DSC panel with a
Napco manual...

From my previous post:

"By overloading the bell output you are disabling it. THINK!!!"
"It will shut down the bell / siren output. That effectively disables
the alarm."
"giving NO AUDIBLE at all as soon as the PTC opens."

I thuink it's pretty clear what I meant.

From your previous post:

"The panel is not designed to handle a high amperage
load. Doing so even for a few minutes places you in danger of having your
panel's power output shut down until the load is removed. That can and will
disable your protection."

Exceeding the capacity of the fuse will disable the bell circuit, not the
customer's protection.

Or this:

"Most of the time the
self-restoring circuit breakers will do simply power the DSC system down
when someone does the kind of thing Olson suggested."

Exceeding the capacity of the fuse won't power down the system. It will
only take out the bell circuit. The "system" is still functional.

Or even this:

"Furthermore, the panel's power supply is rated for a maximum of 1.5 Amps.
Loading it with double that is a good way to void your warranty and damage
the circuitry."

Shows how much you know about DSC, doesn't it?? The panel's power supply
rating has nothing whatever to do with the bell output. Do you even know
what the 700 mA current rating applies to?? What does a single 15 watt
siren draw (the industry standard sold with this panel in "complete kits")??
1.25 amps Robert... Gasp!!!! That's 550 mA *over* the recommended 700 mA
rating!!! Do me a favour... Take the 1555 you say you have and hook a 30
watt siren to the bell outputs. Connect the battery and AC... Fire the
sucker off... How long will the siren run, Robert?? I'll tell you... long
after you're rendered deaf and muzzled... :)



No, you're saying it's OK to load it to as much as four times the rated
maximum which the manufacturer specifies. Care to explain why the
manufacturer says "700 mA Maximum" on the bell outputs if it's alright to
load the output to over 2 Amps? Let's see you dance asround that one,
Franky. Explain why they say "700 mA Maximum."

Already explained that, Robbie... I guess the 15 watt sirens Tri-ed sells
with every one of their packages means what?? When you take the panel back
for warranty they ain't gonna accept it?? I'd suggest you quit selling
those 15 watt sirens on your site too...

Gee, that's interesting. Customers with no previous experience at all read
my FAQ for a few days and frequently post compliments about how helpful it
is. You study my website for months but find it confusing. Something tells
me it's not the FAQ that is at fault here. :^)

Something keeps telling me that your full of schitt!!

Now explain why DSC says 700 mA maximum at the bell outputs if it's OK to
connect an MVA-1000 that draws much more than that. I fully expect you to
try to dodge and change the subject. That's what you do every time.

Nope... Don't try to dodge or dance around... Hook up that 30 watt siren
to the DSC 1555 you have and tell me what happens... By way of a further
experiment, try hooking it up and firing it off with your ammeter connected
between the battery positive and the positive lead from the panel.
 
F

Frank Olson

Robert L. Bass said:
Except that of the two of us I'm the only one who has ever installed alarms
and (more important) I'm the one who has installed hundreds of MVA-1000
siren drivers. I've also installed DSC systems though nowhere near as many
of them as I have Napco. Olson has not installed anything. He works behind
the counter at a small parts distributor in Vancouver.

Robert bAss doesn't know anything about me (but has tried vainly to find
out). His investigative skills rank right up there with his installation
ones...

There are at least two major problems with that advice, Olson. Firdst of
all, the bell output breaker will open every time you use the siren,
effectively rendering the siren useless.

Wrong... You have to do a little more "investigation" Robert... What's the
rating of the self-resetting CB??
Second, when (not "if") the
battery goes low the panel's power supply will try to supply the over
current which the MVA-1000 demands. This can damage the power supply if
allowed to remain in place.

Wrong again... Not with the DSC products. Don't know much about how Napco
designs their boards...
Under no circumstances should a load greater
than 700 mA be connected to the PC1555 control panel's bell outputs.

From page 1 "System Introduction - Section 1.1 Specifications AUDIBLE ALARM
OUTPUT:

- 700 mA Supervised Bell Output (current limited at 3 amps), 12VDC
- Stead or Pulsed Output"

Dang... I'm gonna have to try and source some 7 watt sirens... (and so
will every other alarm company in the country)... Does Tri-ed actually sell
such an animal?? Do you??

That leaves you out.
;-)



It does when the system goes into alarm. Because the "module" (more
precisely, the MVA-1000 siren driver) requires much more power than the
alarm output of the PC1555 is capable of delivering, connecting it as Olson
advises will result in a failed output every time the siren is triggered.

Wrong again, Robert, but then... you've been there before... I'm sure
you're used to it...

IOW, it will not work properly. The siren will sound very briefly and then
get cut off until the breaker tries to restore a few seconds later.

As long as the current doesn't exceed 3 amps, you're gonna be fine...



If you do this on a panel which provides fire protection you risk the lives
of your customers. Don't dso it! If you doubt what I'm saying, contact DSC
tech sup-port and ask them if it's OK to connect a high current siren driver
directly to the bell outputs of *any* DSC Power series control panel.
You'll get a resounding "No."

My rep stated that as long as the current draw doesn't exceed 3 amps you're
OK... What did your rep say??

Immediately disabling the siren. This is a major installation error which
no knowledgeable installer would do.

Yep... I believe I said so (when you look at the complete sentence)...
This happens to be classic Bass... Snip a comment so it reads the opposite
of what was intended... Now I know you're "on the ropes"...

If you do this the system will not provide proper protection. The siren
won't stay on more than a few seconds.

WRONG!! The siren will stay on for as long as the programmed shut-down
time, or until you disarm the panel...
If you use more than one horn the
siren may shut down in less than two seconds.

Try it... Hook up two 15 watt sirens in parallel... You'll disarm the
sucker long before the normal programmed shut-down time of four minutes
(battery attached of course) because the noise will drive your wife nuts...
You should always program the
burglary siren to sound for at least four minutes -- preferably longer.


"Also???" If you don't connect the blue wire to a switched positive you
will have no burglary output anyway. You really ought to try installing
some of this stuff, Olson.

Heh, heh, heh... Unlike you, I put on my tool belt every day... When's the
last time you got paid to work on an alarm system Robert??

Bullfrank! Everyuone knows about your vendetta. You've been chastised for
it numerous times.

Yeah... By Mr. Happy... and numerous other "sock puppets" you control...

Since I know what I'm doing and you don't that's pretty arrogant on your
part.

Bwahahahahahahaha!!! *Who* posted the advice to connect the driver straight
to the battery without using a fuse??

I immediately noted the oversight and agreed. You, however, persist in
giving extremely bad advice because you just can't accept the fact that
you're wrong.

No... You're wrong there too... You didn't "immediately" note the
oversight. Check the dates...

You don't understand the panel or the siren driver and you are dead wrong.

I understand the panel far better than you who have limited experience
working with them. Stick with Napco.

I've read it and I have installed DSC. That makes one of us.

Oh??? What siren did you hook up to the bell terminals?? 15W by any
chance??

There are serious problems with that, Olson. For one thing, batteries don't
stay "good" forever.

Ahhh.... but if you test your system regularly and have it serviced
annually, then the customer can expect a system that will function at peak
performance 100% of the time...

Well, there's the problem. You don't see because you're too hung up on
trying to argue with me. The other problem (for you) is that I've got much
more experience and knowledge of the trade than you.

Don't make me laugh any more than you have already. It's hard to type...
You have at best ten years of actual installation experience. And that's if
we're to believe the foremost liar in USENET (and a felon). Like I said
before... You can own a restaurant, but that doesn't qualify you as a chef,
waiter or even a bus boy. All we have (and all anyone here can find on you)
is a CT license you obtained in 1988. You opened your on line store in
1996... Heck, Robert... that's all of eight years!! You do math about as
well as you read.
If you want to come
off as a pro, try arguing with people like Graham and Rodney. You might
stand a chance against them. When you argue with me you end up looking like
a moron.

Yeah, sure... "Angle of attack of the wind", "Battery Diode Story"... You
keep coming up with more bull-schidt... Now you're selling "nail eating"
super twist drill bits (instead of spade bits)... Interesting... Every
time someone points out a mistake in your FWA you change it... You still
haven't answered why you haven't at least acknowledged Jim's (Alarminex's)
contribution to your FAQ on Anderson windows.



You STILL have not explained why DSC says the maximum load for the bell
outputs is 700 mA. I knew you'd try to dodge that one.

No dodge... DSC states that you can't draw more than 700mA from the bell
outputs from just the power supply. You have to have the batteries
connected to draw more (the manual clearly states that the output is current
limited to three amps). That's the way DSC designed all their products
(from the 1000 and onwards). Tell me... what's the rating of the
self-resetting circuit breaker on the bell circuit of the DSC 1555?? What's
the fuse rating of the bell circuit on the DSC 1550?? Are you going to
open the circuit (or blow the fuse) by running a 30 watt siren on either??

The funny part here is what I didn't bother to point out to you ast first.
Try connecting just the red and black leads to the + and - bell output
terminals if you like. Trip the alarm and listen carefully for the siren
sound. Heh, heh, heh. :^)

Sounds noisy to me (and I had to turn it off before the neighbours
complained)...

You assume it's monitored. Not all systems are. Your idea will quickly
disable the siren. If it's a local alarm there goes the protection... and
the customer's goods.

The siren's gonna run for the requisite four minutes most alarm companies
program them to run (or risk a noise by-law infraction) with *no* problems!!
The question you should be asking is "how long do you figure a perp is going
to let that happen before he knocks the sucker off the wall or rips the
panel loose"??

Ahh, that's it. DSC wrote the manual so that Tri-Ed weould have an excuse
not to honor the DSC warranty. What a load of frank!

Isn't that what I just asked (sarcasm doesn't come across here very well)??

It's those voices in your head.

Yeah... It's one voice though and it sounds like you... ARGH!!!

you

Answer the question. Why did DSC write 700 mA maximum in the manual? Don't
give me a load of bullfrank about Tri-Ed and the qwarranty or some
fictitious installation you pretend to have done. Just answer the
question.

No Bull-Frank... Tell us why Tri-Ed sells a 15 watt siren with every DSC
system if it alone exceeds the rated capacity of the bell circuit?? How
many times have *you* installed two 15 watt sirens on the same system?? If
you feel DSC is the final arbiter here, have your buddy call tech support
tomorrow and get them to post the answer here!!

Forget experiments. Answer the question. DSC is the primary authority on
what amperage should be drawn from the bell outputs -- not you. So why did
they write "700 mA maximum" if it's OK to draw 2, 3 or 4 Amps?

Why do they sell 15 watt sirens with every panel, Robert, if it already
exceeds the rated output of the bell circuit??

Cut the frank and answer the question. Why does DSC state that the maximum
draw of the bell output terminals is 700 mA?


OooKay... here's the answer... 700 mA is the largest load the systems
power supply can handle without the battery attached. When the battery *is*
connected, you can draw up to three amps for a short period of time (the
circuit is current limited to three amps). That's in the installation
manual too!! What *are* you arguing about here?? The fact that one
obviates the other?? C'mon, Robert... This isn't "rocket science"... You
just said that you had a 1555 on you... I'm sure you've got a 30 watt siren
there too... Put the two together and tell us what happens (having
installed several recently, I already know the answer)!!
 
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