Re: Behavior of Disconnecting Keypad From Ademco 128BP Panel?

["Mark Leuck" <m..leuck@xxxxxxxxxxx>]

"petem" <petem001@xxxxxxxxx> wrote in message
news:A7%Ae.77073$8v3.1535728@xxxxxxxxxxxxxxxxxxxxxx
> if the panel loose a keypad it wil react with a trouble condition to the
> central
>
> if you remove power to the keypad(red wire) it will not react anymore...
>
> the keypad become active after power up in a few second max...
> and the trouble clear right away..
>
> thats what i seen with any ademco/first alert panel that have keypad with
> adress on the bus

I'm not exactly sure the 128 or any other high end Ademco panel really
supervises the keypads, one of the big reasons why they enable keypads like
they do is because of the slow keypad bus. ie: the more keypads enabled the
slower the response is on each keypad.

At least that's the reasoning why they do it with the 15P/20P which are
cut-down Vista-50P's, depending on the panel by default the first 2 or 3
keypads are enabled out of the box and don't affect the panel if just one is
installed.