US 2012/0032794 A1 · SYSTEM FOR TESTING NAC OPERABILITY USING REDUCED OPERATING VOLTAGE

Abstract

A monitoring system for a NAC (Notification Appliance Circuit) is provided. The monitoring system includes a system controller, and a NAC comprised of one or more notification appliances that may be in a series. The NAC and its appliances may be operatively coupled to the system controller. The system controller is operable to determine whether a notification appliance has sufficient voltage at a low voltage operation. The system controller may control the voltage to the NAC in order to provide power to simulate operation of the NAC using battery power. A voltage may be measured during the simulation (such as at one end of the NAC). The measured voltage may be compared with a predetermined minimum operating voltage for the notification appliance. Based on the comparison, it may be determined whether the one or more appliances on the NAC may operate properly when the NAC is operated using battery power.

Claims18

Dependent claims

A fire alarm control panel for controlling one or more notification appliances on a notification appliance circuit (NAC), the NAC being operational when supplied with a nominal voltage, the fire alarm control panel comprising:

a NAC interface;
an input interface separate from the NAC interface;
a memory configured to store a value indicative of a reduced voltage, the reduced voltage being less than or equal to the nominal voltage;
and
at least one controller in communication with the memory and being configured to:
supply the NAC with the reduced voltage via the NAC interface;
receive input via the input interface from at least one sensor, the at least one sensor being separate from the fire alarm control panel, the input indicative of at least one electrical parameter of the NAC when the NAC is supplied with the reduced voltage;
and
determine, based on the input, whether each of the notification appliances in the NAC is operable when supplied with the reduced power.

6 more elements

Dependencies are inferred from the claim text.

System for testing nac operability using reduced operating voltage

Life of this patent

System for testing nac operability using reduced operating voltage

Life of this patent

Abstract

Claims18