Specifications

FS-250 Installation and Operation Manual

DESCRIPTIONS

FS-250 SYSTEM DESCRIPTION

The FS-250 is a modular fire alarm control panel. It features advanced addressable

detection, programming, and memory capability. Its base configuration includes a power

supply, a P2 addressable device circuit, four/ two notification circuits (NAC), serial interface

circuit, four-status relays, and a programming port.

The FS-250 control panel mounts in a 22" x 18" back-box with overall cover size of 22-

9/32" x 18-3/8". Operating controls and indicators are mounted on the inside hinged plate.

An 80-character LCD display provides specific indications for addressable devices while

LEDs indicate general panel status.

Semi-flush mounting kits are available for the enclosure.

The main board mounts in the rear of the enclosure. The power supply is physically

contiguous with the main board. The FS-250 main board provides the connections for

external field wiring. Optional boards mount on the main board or on the rear of the

enclosure.

The display board mounts on the inner-hinged plate.

All normal operation is controlled via a membrane key pad. Displays are provided by an 80-

character, alphanumeric, backlit LCD display and by discrete LED indicators for major

control panel functions.

The 80-character LCD display is used to display event data, including alarms and troubles,

identification of zone or device, and presentation of history. The display is controlled by a

set of four push-button switches commanding the control processor. A back light is included

in the display to assure visibility in low light, but to conserve power, it is only activated

during a reported event or on operation of a display control switch.

Individual LEDs on the panel are provided to indicate SYSTEM ALARM, PREALARM,

SUPERVISORY, ALARM SILENCED, SYSTEM TROUBLE and AC POWER ON. Direct

push-button controls are provided for ALARM SILENCE, ACKNOWLEDGE, MENU and

SYSTEM RESET.

Power Supply

A 24V nominal power supply provides all operating power to the control panel for both

standby and alarm conditions. Sufficient battery charging capability is available to charge

38.5 AH sealed lead-acid batteries within code requirements for 60 hour quiescent plus 5

minutes alarm. The cabinet will hold batteries only up to 12 AH. The back-up battery is 24V,

maintained by floating on the power supply. The battery will be automatically disconnected

at low battery voltage to prevent deep discharge.

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