Functional Systems - Servicing the Healthcare, educational marketplace over 20 years

DESCRIPTION & FEATURES
Initiating Circuits
The base LW-401 has four conventional, Style “B” (Class B) zones which any combination of 30 compatible smoke detectors can be combined on a zone. Any number of thermal detectors, manual stations or other compatible direct shorting devices may be connected to each zone. All of these initiating devices can be mixed on the same zone providing the total power requirement of the zone does not exceed 9 mA supervisory current. The LW-401 has the additional capacity to support detector accessories such as relays, remote alarm lamps and audible bases.

Initiating zones can be programmed for many functions. Alarm verification allows detector application in sensitive areas with or without manual stations mixed on the zone as allowed by code. Manual station operation shall not be delayed on verified zones. Generic zone function allows the NAC’s in the LW-401 to follow the action of a master fire alarm panel in the facility.

Initiating zones can also be bypassed as required, for example, during construction on the premises. The system is expanded through the model 16411B expander which has an additional four initiating circuits in addition to relays and open collector outputs.

The system can alternately be expanded through the model 16404B expander module which has an additional four Class A (Style initiating circuits. The 16404B also converts the four initiating circuits and the two notification circuits on the main LW-401 to Style D (Class A) and Style Z (Class A) respectively.

Notification Appliance Circuits
The base LW-401 has two Style “Y” (Class B) Notifica-tion Appliance Circuits, each rated at 1.5 Amps. The total power output of the panel, between the two notification circuits and the auxiliary output, is limited to 3 Amps. The LW-401 notification circuits are power limited to reduce installation costs without the addition of any hardware.

Three (3) Amps is sufficient to provide power for many applications requiring appliances designed to ADA specifications. Notification Circuits can be programmed for various codes. These include temporal, march time, simplified zone code, and number of rounds. They can also be inhibited during test and programming functions. The two circuits can be individually programmed as non-silenceable. This steady operation can be used for strobes which must continue operation after audible devices are silenced.

Relays and Outputs
The base LW-401 has form “C” relays for general alarm and trouble rated at 1 Amp., 30 VDC. The model 16411B optional expander module has an additional four general purpose, programmable relays rated at Amps., 30 VDC, plus four programmable open collector outputs.

Additionally, the model 16404B relay module provides eight general purpose, programmable relays rated at 2 Amps., 30 Vdc/120 Vac. All remote operations in the fire alarm system are controlled from the16411B or the 16404B, both of which are installed within the LW-401 enclosure.

Visual and Audible Indicators
The LW-401 has visible LED annunciation by zone for alarm and trouble. Additionally, there is a system alarm LED and a system trouble LED. Supervisory zones utilize the zone trouble LED flashing in sync with a system supervisory LED to indicate an off normal situation.

Clustered with the system alarm, trouble and supervisory LEDs are also LEDs for AC power, bypass and test/program mode. A seven segment display reports a code for each system trouble and is also used during testing and programming functions. Trouble conditions are also annunciated by a piezoelectric sounder housed inside the LW-401.

Remote annunciation is accomplished through a serial connection with the model 16409B, eight zone LED annunciators. These units display alarm, supervisory and trouble conditions for 8 zones. A total of two modules can be attached to each system. The 16409B-0-3 comes with a black enclosure, the 16409B-0-4 with a white enclosure.

Auxiliary Power
The LW-401 contains a 1/2 Amp. auxiliary power circuit which is used to drive remote devices. The total power of the panel, between the auxiliary output and the two notification circuits, is 3 Amps.

Power Supply/Battery Charger
The power supply accepts a 120 Vac/60 Hz input or, optionally, a 220/240 Vac 50 Hz input. On loss of AC power the system switches to battery operation and indicates such by flashing the AC power LED on the display. Battery capacities of 24 and 60 hours are available.

Manual Controls
The LW-401 display has four switches for acknowledging alarm, supervisory and trouble conditions; silencing notification appliance circuits; resetting the system; and for the drill function. These switches are also used when programming the control unit.

Field Programmability and Test Functions
The following functions are field programmable in the LW-401. These features are generally not programmed in the unit as received from the factory. Field programming is accomplished through the display and does not require the use of a computer or any proprietary tools.

Initiating Circuits
Alarm Verification by Zone, Zone Bypass,
Supervisory Zone or Generic Zone when the
LW-401 is to be used to provide remote notification appliance circuits.
(Note: The default mode is an alarm causing zone.)
Notification Appliance Circuits:
Non-silenceable, Simple Zone Coding, March Time,
Temporal, Silence Inhibit, Cutoff Timers and Reminders. (Note: The default mode is a steady signal.)
Outputs:
Bypass Outputs/Relays.
System Programming:
Zone to Output Matrix and Password Maintenance.
System tests features include the One Person Test feature, a Lamp Test and Search and Clear of the alarm, trouble and supervisory history buffer.

Engineer and Architect Specifications
The fire alarm control panel shall be a Faraday LW-401, shall utilize conventional zones, shall be microprocessor based and fully field programmable. The base panel shall include four initiating zones, relaysfor general alarm and trouble and two power limited notification circuits capable of a total of 3 Amps of power.

The system shall be expandable via a model 16411B expander module which shall contain an additional four conventional zones, four general purpose relays and four general purpose open collector outputs.

The fire alarm system shall have the following features: subsequent alarm and trouble, one person test feature, brown out protection, 24 or 60 hour battery backup. It shall also have the following selectable features: supervisory zones, alarm verification by zone, non-latching zones, alarm,trouble and supervisory history, notification appliance circuit coding, alarm/trouble 24 hour reminder, and zone/output bypass.

Any initiating device circuit shall have the capability of being mapped to any optional output via the system programming function.

The fire alarm control panel shall be UL listed and meet the requirements of NFPA 72 for local fire alarm control for automatic or manual service, and for sprinkler supervisory and waterflow service.

It shall meet NFPA 72 requirements for central station service when connected to the model DC-100 or DC- 101 digital fire communicator.