Re: Ademco 50P - Unable To Disarm

["Crash Gordon" <webmaster@xxxxxxxxxxxxxxxxxxxxx>]

Contact rating for relay or tamper are not what the detector draws, it's the
rating of how much current the switch or relay can handle - don't use those
ratings for current draw.


"Don" <dedeaux@xxxxxxxxxxx> wrote in message
news:1149642777.422554.144080@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
| Thanks for the tip.
|
| The sprinkler waterflow sensor is the only item which uses the term
| "contact rating" and fortunately, I guess, that number is not included
| in the 9039.8 mA total.
|
| The only number for 6-28 VDC I could find for the Chemetronics 600
| series heat detectors was 1.0 A.  But it IS called "electrical rating"
| which I now take, thanks to you, to be its maximum current-carrying
| ability.  There is no indication of alarm current draw on the detectors
| themselves.  This leaves me up in the air for these two items because
| none of the literature I found online at their web site or seller sites
| even mentions any other number for current.
|
| The same seems to apply to the Edwards heat detector.
|
| Although the Acuity glass break figure is called simply "Current", the
| spec sheet separately lists contact ratings for "Alarm Relay" and
| "Tamper Switch".  So I think the "35 mA max" I included for each of
| these may be right.
|
| All the other current numbers seem to be correct for the draw/drain
| when each device is in alarm.
|
| Does this mean I can ignore the heat detectors?  If so, my total alarm
| current, worst case draw should be 6039.8 mA.
|
| I think I still need more auxiliary power?
|
| Thanks.
|
| J Barnes wrote:
| > Some of those items you have listed the "contact rating"  this is not
the
| > current draw but it is the amount of current that can go through it
without
| > burning it up.   Dont add those numbers in.
| >
| > James
|
|