Re: 12vdc panel

["Reg Siemens" <regsiemens@xxxxxxxxxxxx>]

The panel only requires AC voltage input to start up...from there it will
run on battery backup and feeding DC voltage into the AC terminals seems to
trick its trouble circuitry adequately.  I'm guessing that the manual quote
that you reference would indicate that the panel will not power up with AC
below 55.5Hz, however we regularly bring our panels to life (for programming
purposes) by connecting the battery and simply putting DC into the AC input
for a second or two.  This is all it takes to wake the panel up and run off
of DC only.

"Doug L" <vssdoug@xxxxxxx> wrote in message
news:G7idndWXBJ0Gl7zeRVn-og@xxxxxxxxxxxxxxx
> Section 1.1 of the North American 1555MX installation manual states that
> the panel will not run if the AC line frequency drops below 55.5Hz,
> presumably so DSC can sell a different version outside of North America.
> If this "feature" actually works then it should prevent the panel from
> running on DC applied to the AC terminals.
>
> Doug L
>
> --
>
> "Reg Siemens" <regsiemens@xxxxxxxxxxxx> wrote in message
> news:Xw7Ue.2937$qP3.31412@xxxxxxxxxxxxxxxx
>> We have a DSC PC1575 that is running off of 12VDC solar system in a
>> remote cottage and I tricked the panel into thinking it had A/C by
>> feeding the AC terminals 12VDC.  No trouble light and it's been running
>> for years.  I'm assuming the current 1555's & 5010's would function
>> similarly.
>>
>> Reg Siemens
>> Tower Security
>
>