Section 1: System Overview; General; Features - Honeywell HPF24S8 Installation Manual

The HPF24S6 is a 6 amp power supply and the HPF24S8 is an 8 amp power supply. Each HPF24S
power supply is a compact, cost-effective, remote power supply and battery charger which provides
ADA compatible strobe synchronization. The remote power supplies consist of a filtered 24 VDC
output that can be configured to drive four Style Y (Class B) NACs (Notification Appliance
Circuits). The four circuits can be configured for Style Z (Class A) with the optional ZNAC-4 Class
A converter module. Alternatively, the four output circuits may be configured as 24 VDC
resettable or nonresettable power outputs. The input circuits, which control the power supply
operation, are triggered by the reverse polarity of an NAC or by a 12 VDC or 24 VDC power
source. The power supplies are compatible with 12 VDC and 24 VDC control panels.
The HPF24S6E and HPF24S8E offer the same features as the HPF24S6 and HPF24S8 respectively
but allow connection to 220/240 VAC. Unless otherwise specified, the information in this manual
applies to both the 110/120 VAC versions and the 220/240 VAC versions of the power supplies.
The HPF24S6C and HPF24S8C are the Canadian versions which offer the same features as the
HPF24S6 and HPF24S8 respectively. Unless otherwise specified, the information in this manual
also applies to the Canadian versions of the power supplies.

1.1 General

The HPF24S power supplies can be used as remotely mounted power supplies and battery chargers
to power four noncoded or coded NACs. The Main FACP (Fire Alarm Control Panel) NAC(s) is
connected to the remote power supply input circuit(s). When the control input circuit activates due
to reverse polarity of the NAC from the FACP, the power supply will activate its Notification
Appliance Circuits.
During the inactive or nonalarm state, the power supply supervises its NAC field wiring for short
and open conditions. AC fail, battery, charger and ground fault troubles will also be monitored by
the power supply. If an NAC or power supply fault is detected, the power supply Normally-Closed
Trouble contact will open.
If an alarm condition occurs and the NAC is activated, the supervision is disabled and the
Notification Appliance Circuit is no longer supervised (except for shorts). Supervision of other
power supply faults such as low battery, AC loss, ground fault and battery charger trouble will
continue and may be monitored via the Trouble relay contacts.

1.2 Features

• Self-contained in a lockable cabinet
• 24 VDC remote power supply
• Outputs are completely power-limited
• Two optically-isolated input/control circuits, compatible with 12 VDC and 24 VDC control
panel NACs
• Four output circuits:
– Fully filtered power
– Four 24 VDC Style Y (Class B) NACs (special application)
– Optional ZNAC-4 Class A converter module for conversion to Style Z NACs
– Alternatively, all four circuits may be configured as 24 VDC special application power
outputs
– Output circuits may be configured as resettable or nonresettable
• NAC Trouble LED - blinks to indicate the number of the circuit in trouble
• Maximum current available for any one output circuit: 3.0 amps
• Maximum total continuous current available:
HPF24S Series Power Supplies — P/N 52751:D3 5/11/2010

Section 1: System Overview

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