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HPF24S Series Power Supplies —
P/N 52751:D3 5/11/2010
Section 5: Applications
5.1 Controlling Four NACs With One Input and Selective
Silence
In this application, the power supply has been set as a master with synchronized outputs and
selective silence (see SW1 switch settings in following illustration). All four HPF24S output
circuits, which are shown as NACs (Notification Appliance Circuits), can be controlled from one
input such as an addressable control module as illustrated in Figure 5.1. The control module can be
powered from the HPF24S auxiliary 24 VDC power output (TB4, Terminals 9 & 10) and
supervised by an EOL relay. An addressable relay module,
programmed as an alarm output and a
silenceable point, can be used as a selective silence input
.
NOTE:
The Relay Module is required only for this application with the power supply set as Master. If
the power supply is set as Slave, the Relay Module is not required. In Slave mode, selective silence
(horn mute) is provided by the FACP through the sync input.
