Additional power needed, what's the best way?

Old 07-19-15, 02:10 PM
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Join Date: Jul 2015
Location: USA
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Additional power needed, what's the best way?

I have a ge Concord 4 panel with 86 hard wired zones. All these expansion zone modules and other modules currently attached have pretty much use up all the panels 2A of available power. I however need to now add some voice modules (that announce what zone a security alarm has occurred) but obviously these modules would exceed the 2A capacity during alarms.

Is the best way to do this is to buy a 12V power supply/transformer (probably a 2A) and connected the panels superbus ground to the new 12V power supply's ground and then power the new modules 12V input with this new transformers 12V rail? And then obviously connect the 2 data bus lines to the new voice modules?

I just want to be sure I should be connecting the new voice modules 12V+ and -(ground) to the new transformer but that I should _also_ connect the grounds of the new transformer (aka ground on the new voice modules connectors) to the main security panel superbus ground as well.

Old 07-19-15, 07:42 PM
Join Date: Mar 2010
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Get an Altronix SMP3 and common the grounds.

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