Tamper fault on TS690ID

[Guest Alister]

I have a Menvier TS690ID panel. The system has been fitted for about 4 years. The system has worked faultlessly until a couple of weeks ago.

The system sets ok but some time later (may be 3 or 4 hours) goes off with a tamper fault. The system gives a tamper fault on most of the curcuits all at the same recorded time. Reset the panel and it reset OK. At times the panel will operate for 2 or 3 days with out any problems. Any ideas.

[Service Engineer]

Sounds as though it may be being effected by a mains spike, have you bought anything new thats mains operated at about the time the problem started..?

Get your installer round and ask him to fit a data line filter and also fit a 22pF capacitor to each EOL device.

[bellman]

Get your installer round and ask him to fit a data line filter and also fit a 22pF capacitor to each EOL device.

46649[/snapback]

Exactly what I'd do as well, The Capacitor usually sorts the problem out

Regards

Bellman

[Guest]

anybody use the act id meter?

[Nova-Security]

Faulty biscuit, if the faults are coming from 1,2,3,4,5 and you have 8 zones and none form 5 to 16 are going into fault try looking at 5 is it generally the highest number that causes the fault,

[Guest]

Didnt see this thread, so sorry for the late reply.

I have come across a buiscuit with a crack or break in one of its legs, this can cause intermitent tamper faults showing as all zones, for some reason it seems to spike the whole ID line as it makes an breaks contact due to expansion of the frame be it a window or door or PIR.

[Guest bert racoon]

Hello

The problem you talking about with all biscuits going inot tamper could be due to a few things

this is called ghosting !

(1) mains spike ! (what time of day did this happen ?

(2) usually water a biscuit can cause the id line to go down to earth !

this can be determined with an id test meter ! there are excellant if you are doing lots of id systems

(3) have a look in the event log and see what biscuit was first to go into tamper ! this is usually the starting point of all your troubles !

The capacitor you need is a 47Nf but do not fit more than 3 of these or you load the id line up with to much and get more problems than before !

ID does have a little bit of black magic involved with it and i agree screened cable is best only earth at panel end.

The ID technology was originally designed for the auto mobile industry to monitor faults in cars IE flat tires and the like.

Its was sold to ADE many years ago, when we didn't have half the interference in the air like today,

That said treat Id with respect and it is excelleant !

[CompostCORNER]

Had a system come up with 'Short' a few months ago. All detectors down. It was at a school on a perimeter alarm. Half a day of fault finding all down to a previous engineer. Fault found the old fashioned was as no spec or plan existed. It was a case of follow the cable and try to guage the half way point and sever everything after this point. Then move on adding each detector one by one until the fault was found. Not so easy when half of the detectors were 'spurred' off the main ID line.

The school had some window shutters fitted and there was an external PIR in the way. The engineer removed the detector and programmed the zone 'Not Used'. System worked fine of course.

Now I went to the fault some 2 years after the shutters were fitted and was shocked to find that hidden behind the steel of one of the shutters, was the cable. Still intact and still part of the system. After 2 years, it had corroded to the extent that it was now shorting the system.

This was a single line with 24 biscuit units on and the fault was at unit 18, a spur off the main ID line.

Faulty biscuits and tampers are one thing but finding a short on a cable not only hidded but supposedly not on the system was a nightmare.

ID can be a fantastic way to install alarms if installed correctly but if it's not done properly, then it can be an utter nightmare when things start to go wrong.