b. Enclosure. The control unit enclosure is designed to
This manual covers only the alarm set control unit C-9412(
provide protection against easy access by unauthorized
)/FSS-9(V). No known differences exist for the model covered
personnel. Construction is of welded, 16 gauge steel. The
by this manual.
enclosure contains no external openings or knockouts except
for the four mounting holes provided in the rear panel. (An
opening will be required for installation. Refer to Chapter 2.)
1-11. Tabulated Data
A full-size, flange-over type door provides access to the
interior components. A full-length piano-type hinge is used to
a. Control Unit.
mount the door. The door is latched in the closed position by
means of a double-action high-security, tubular, key lock. The
Weight (less battery and
control unit is shipped from the factory equipped with two keys
each for the door lock and operating mode switch. The lock
number is identified by the tag on the key ring. A door tamper
switch installed inside the enclosure beneath the door mating
surface detects any opening of the enclosure door. Provisions
are provided to bypass the alarm function of the door tamper
Gray per Federal
switch when the door is opened for maintenance. An ac
Std. 595, color
power indicator and key operated mode control switch are
mounted in the door panel.
110 to 125 V ac,
c. Power Supply. The control unit power supply is a solid
48 to 62 Hz.
state device used to convert facility ac power to various ac
24 V dc; supplied by
and dc voltages for use by the control unit and other system
components. The power supply contains the power supply
Refer to para. b.
and battery charger circuitry, an ac power monitor, and an
Lamp, ac indicator
6.3 volts ac.
audible alarm (sonalert) which operates when an alarm is
detected in the test/reset mode only. A power switch and the
ac and dc power fuses are located on an exterior wall of the
power supply for accessibility. The power supply base is an
-20° to + 150oF.
aluminum plate to facilitate conductive cooling.
up to 95 percent
d. Battery. Emergency operating power is supplied by a
sealed, rechargeable battery. The battery sits in the bottom of
-30° to + 1650F.
the control unit enclosure to permit easy' removal and
replacement. The battery is equipped with mechanically
up to 95 percent
polarized terminal connections to prevent inadvertent reverse
polarity connection during installation or maintenance.
20 g, 11 ms
e. Status Processor. The status processor consists of 11
plug-in printed wiring board (pwb) assemblies mated to card-
edge receptacle connectors. The receptacle connectors are
attached to a master pwb which provides electrical
interconnect between boards. A twelfth printed wiring board
assembly, display board A12, plugs onto pwb All. The printed
wiring board assemblies utilize an ejector mechanism to
facilitate removal. Each printed wiring board is numbered to
correspond to a number on the housing for proper card
34 pounds, 4 ounces.
location and keyed to prevent insertion into the incorrect
position. All adjustments and test points are accessible while
the pwb's are installed. A multipin connector is used for the
electrical interface between the status processor and other
.24 volts dc, 20 ampere
control unit circuitry to permit easy removal and replacement
of the status processor.
1-10. Difference Between Models