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Panic Buttons - High Res Faults

Deltaseven
in Detector Queries (Public)

Featured Replies

Hi Folks,

We seem to be having a large number of problems with high res faults on our PAs, across multiple sites, and for quite a while. Our standard fit is the Knight Plastics KP10 or KP10s (Grade 3 with jumper selectable resistance). They PCBs seem to be poorly soldered with large blobs of solder, and large amounts of flux around the solder points. If you meter the tamper terminals, with the spring pressed, resistance fluctuates between 30 and 550 ohms, so clearly that is where the problem lies.

Anyone else having similar problems? If not, what PAs are you using (grade 3).

Thanks,

D7

elmdene or cqr pa's here

securitywarehouse Security Supplies from Security Warehouse

Trade Members please contact us for your TSI vetted trade discount.

Our standard fit is the Knight Plastics

There is your problem.

We use CQR, 0 problems.

Edited by antinode

Trade Member

CQR here and no probs

The above is my personal opinion and not that of my employer or anyone else.

CQR all the way. We have fitted about 150 plus recently on some large retail roll-outs and they have all been fine.
  • Author

Thanks all for your comments - will try to push for a change.

Elmdene here

"poorly soldered with large blobs of solder, and large amounts of flux around the solder points" it might be that they have gone over to lead free solder and not increased the iron temperature :-)
"poorly soldered with large blobs of solder, and large amounts of flux around the solder points" it might be that they have gone over to lead free solder and not increased the iron temperature :-)

I was wondering the same thing, I hate lead free, it just doesn't run the same.

Give me full fat any day.

High resistance is probably thru links for resistor select.

Have found using normal resistors or soldering links stops problem

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