- As it says in the manual about the SOM:
The SOM provides a supervised 24VDC polarity reversing output on the SLC loop most commonly used for audible and visual signaling appliances or triggering a remote notification appliance circuit power expander.
Expander units are used to add NACs AND power to the control panel. They can be installed remotely in the building so wire distance and voltage drop issues are reduced.
Keep in mind the power available for NACs is limited. Each panel NAC is rated for up to 2.5 amps, however the power supply has only 4 amps available. The current used by each NAC has to be added up and cannot exceed 4 amps total. That means 4 NACs at 1 amp each. One NAC at 1.5 amps and 3 NACs at 0.8 amps. Or 2 NACs at 2 amps and 2 NACs not used. Any power consumed by devices connected to a SOM powered by the panel is also part of that 4 amps. If your NAC power adds up to more than 4 amps a NAC Extender unit is needed.
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No.
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According to the manual I downloaded there is an addressable manual station. I do not know if it is acceptable on your particular job site. To use a standard contact type call point there is a selection of modules shown in the manual.
5.7 FRCME-4 Input Module Wiring … 63
5.8 FRCME-S Mini Input Module (w/ Terminal Blocks) … 64
5.9 FRCME-P Mini Input Module (w/ Pigtails) … 65
5.10 FRCME-M Mini Input Module (w/ Terminal Blocks) … 66
5.11 FRCMA / FRCMA-I Input Module … 67