General - Honeywell HPF24S6 Installation Manual

General

1.7 General
The HPF24S may be used in a number of different applications. It may be used as a remotely-
mounted power supply and battery charger where it can provide up to four coded or noncoded, syn-
chronized or nonsynchronized NACs (Notification Appliance Circuits). Alternatively, output #4
can be used as a door holder circuit which will provide a steady 24 VDC output until an alarm con-
dition or AC fail condition causes it to drop to 0 VDC following a 10 second delay. All four out-
puts can also provide power.
Style Y NAC
Note: All NAC
or Door
outputs can be
Holder Power
converted to Style Z
Output #4
with a ZNAC-4
option module
AC Power
One possible application for the HPF24S remote power supply utilizes the NAC repeater feature.
In this application, one or two NACs are connected from the main FACP to the remote power sup-
ply control input circuits. When the control input circuits are activated by the reverse polarity of
the NACs, the power supply will activate its corresponding output circuits as programmed by SW1
DIP switch configuration (refer to Table 3.1 on page 20).
During the inactive state, the remote power supply supervises its NAC field wiring for short and
open conditions. If a fault is detected, the power supply will enter a trouble condition and illumi-
nate the NAC Trouble LED. When the NACs are activated, the supervision is disabled and the cir-
cuits are no longer supervised (except for short circuit conditions). Supervision of other power
supply faults such as low battery, battery charger trouble, ground fault and AC loss will continue
and may be monitored via the power supply trouble relay.
If an application requires that all four outputs activate at the same time, only one NAC is required
from the FACP. For this application, the NAC is connected to control input circuit #1 and SW1
DIP switch is set for this operation.
HPF24S Series Power Supplies — P/N 52751:E1 4/14/2011
Style Y NAC
Style Y NAC
Output #2
Output #3
Input/Output Functions are Programmable
by SW1 DIP Switch Settings
Battery Charger
Figure 1.2 Simplified HPF24S Block Diagram
Style Y NAC FCPS Trouble
Output #1 Contact Output
System Overview
24 VDC Specific
Application Power
NAC Control
Input #2
(from FACP)
NAC Control
Input #1
(from FACP)
Sync. Input
13