Brian Vickers
Well Known Member
I like warning lights and alarms that tell me when something is malfunctioning. My Plane Power alternator installation diagram shows a simple alternator out light alternative. Aeroelectric Figure Z-11 shows the use of a low voltage monitor module. I purchased the unit and it actually has an over voltage alarm limit as well. My understanding is that the Plane Power system monitors only the alternator. The B&C unit is connected to the bus and therefore monitors bus voltage. Does this mean when the alternator voltage drops, the B&C unit will not be activated until the battery is depleted below the monitor's preset limit? In other words, the warning light will not trip while the battery is fully charged. I want to know the moment the alternator goes above or below normal operating limits.