Honeywell HPFF12 and HPFF12CM(E) are Notifica-tion Appliance Circuit (NAC) Expander Power Supplies designed to extend the power capabilities of existing NACs and provide power for auxiliary devices. The HPFF12 and
HPFF12CM connects to any 12 or 24V Fire Alarm Control
Panel (FACP) or operates stand-alone. They provide regulated and filtered 24VDC power to four NAC's and an auxiliary output. The NAC outputs are rated at
3.0 amps each and the auxiliary output is rated at 2.0 amps
(this output is continuously supplied, even in alarm, and there-fore must be taken into account for power supply loading and battery size calculations). The combined output cannot exceed 12.0 amps.
The HPFF12 and HPFF12CM provide independent output cir- cuit supervision so in the event of a NAC fault they can notify the attached FACP. In addition they have a trouble memory feature that displays past troubles (by NAC) for rapid diagnos-tics. Synchronization is built in for five appliance brands.
The HPFF12 and HPFF12CM have two fully independent supervised initiating circuits that can be used for synchronized strobes and coded horns. Their NAC outputs may be config-ured as any of the following:
• four Class B (Style Y)
• two Class A (Style Z)
• two Class B and one Class A
• four Class A with the optional HPP31076 Class A adapter
These power supplies contain an internal Battery charger
capable of charging up to 26.0 amp-hour (AH) batteries.
The HPFF12 is mounted in a lockable wall cabinet that can
accommodate up to two 18AH batteries. The HPFF12CM is
designed to mount in Honeywell’s large equipment enclosure
(EQBB-D4; order separately). Up to three HPFF12CM sup-
plies can be mounted in a D-sized EQ cabinet in positions 2, 3,
and 4. Each HPFF12CM can accommodate two 12AH batter-ies.
One of the most challenging aspects of a retrofit application is
locating the existing End-of-Line (EOL) resistor. In these appli-
cations that have EOL values other than the 3.9k normally
used with the HPFF12, a single resistor matching the existing
EOL can be used as a reference for all the outputs. This fea-
ture speeds installation and system checkout because the
actual EOL does not need to be located and changed in the
circuit. The reference resistor must be within the range of 1.9k to 25k.
4 separate programming resistors for the HPFF12 are pro-
vided in the hardware kit shipped with each HPFF12(E) and
HPFF12CM(E). They are 3.9K (5 of these are provided, need only
1 for programming), 2.2K (1 each), 4.7K (1 each) and 10K (1 each)
• Listed to UL Standard 864, 9th edition.
• Four (4) power limited supervised notification application
circuits (NAC's) capable of supplying +24VDC at 3.0 amp
• NAC output circuits may be configured as any of the follow-
Four Class B (Style Y).
Two Class B & one Class A.
Two Class A (Style Z).
Four Class A (requires the HPP31076 Class A adapter).
• Four field-programmable operational modes:
• Temporal coding and sync protocols compatible with the fol-
lowing notification appliance brands:
• Protocol pass-through for synchronizing large systems.
• Two fully independent supervised input/output control circuits.
• Redundant activation operation for survivability.
• Supports FACP’s Selectable Silence ability.
• 2.0 amp auxiliary continuously supplied output.
• Eight status LEDs