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Elk M1 Gold - Random False Alarms


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#1 YannD

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Posted 03 August 2018 - 09:32 PM

Hi,

 

New install of M1Gold had been humming along nicely for about 3 months.  All of a sudden, I got random zone violations on two particular zones.  They would be rapidly repeating (several in one minute).  All zones are hard-wired.

 

The first repeated zone violation (alarm) was on a door.  I disabled it and a couple of days later, reenabled it and no problems with it since (5 months now).

 

Now, another hard-wired zone gives false triggers to the monitoring company (6 in 30 minutes).  Client is demanding a fix, but I'm not sure WHAT to fix?!

 

Here's the latest from the log:


3 Fri 7/13/18 15:46 1 1003 - BURGLAR ALARM ANY AREA Bath 3 Window (zn 5)

4 Fri 7/13/18 15:46 1 1146 - RESTOR BURGLAR ZONE Bath 3 Window (zn 5)

5 Fri 7/13/18 15:46 1 1003 - BURGLAR ALARM ANY AREA Bath 3 Window (zn 5)

6 Fri 7/13/18 15:46 1 1146 - RESTOR BURGLAR ZONE Bath 3 Window (zn 5)

7 Fri 7/13/18 15:46 1 1003 - BURGLAR ALARM ANY AREA Bath 3 Window (zn 5)

8 Fri 7/13/18 15:46 1 1146 - RESTOR BURGLAR ZONE Bath 3 Window (zn 5)

9 Fri 7/13/18 15:46 1 1003 - BURGLAR ALARM ANY AREA Bath 3 Window (zn 5)

10 Fri 7/13/18 15:46 1 1146 - RESTOR BURGLAR ZONE Bath 3 Window (zn 5)

11 Fri 7/13/18 15:46 1 1003 - BURGLAR ALARM ANY AREA Bath 3 Window (zn 5)

12 Fri 7/13/18 15:46 1 1146 - RESTOR BURGLAR ZONE Bath 3 Window (zn 5)

13 Fri 7/13/18 15:46 1 1003 - BURGLAR ALARM ANY AREA Bath 3 Window (zn 5)

14 Fri 7/13/18 15:46 1 1173 - AREA ARMED Yann (User 1)

 

All wiring rings out clean.  I did notice though, that when viewing the status screen Voltage reads average 7.1 to 7.2.  This one zone averages between 7.7 and 7.8.  Not sure if that could be an issue, but it's the only abnormality that I can see.   I thank you in advance for any help.  y

Firmware 5.3.10.



#2 RAL

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Posted 03 August 2018 - 10:16 PM

My first thought is that the quick repetition of the alarm events leads me to think it might be a bad connection somewhere in the zone wiring.  The higher than normal voltage may be suspicious, too, depending on your configuration. 

 

I take it you are using EOL resistors?  

 

Just a single resistor per zone (3-state) or two resistors (4-state) ?

 

For a 3-state configuration, a voltage between 4.0 and 8.8V is ok.  But for 4-state, anything above 7.3V would be an alarm condition.

 

Did you measure the 7.8V when the system was in normal state, or under alarm condition?  You'd really like to see it while it is triggering an alarm, but of course, if it is a split-second event, it's unlikely that you'll catch that.

 

Are you sure you have the Zone Type configured correctly (Type 0 or Type 4 depending on the number of EOL resistors)?

 

An easy thing to do is check all the screw-down terminals for the zone wiring and make sure they are all nice and tight.  Especially anywhere you might have more than one wire on a single terminal.

 

Have you measured the power supply voltage when the system is armed to see if it is up around 13.5V? 

 

I'm wondering if you might have too high a load on the power supply, causing it to become flaky.  Have you done a current draw calculation?



#3 mikefamig

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Posted 04 August 2018 - 09:09 AM

After ruling out an over-load of the panel power supply as RAL suggested there s a quick easy way to tell if it is a wiring/switch problem. Just temporarily swap the 2 wires from this zone with the adjacent zone at the panel to see if the problem follows the wires.
 
Mike.

Edited by mikefamig, 04 August 2018 - 09:10 AM.


#4 mikefamig

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Posted 04 August 2018 - 10:34 AM

In the few years that I've had my Elk installed I've had two occurrences of recurring false alarms and both times it turned out to be a bad window sensor. The point is that sensors do fail.

 

Mike.






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