Descriptions; Fc901 System Description; Power Supply - Siemens FC901-U3 Installation, Operation And Maintenance Manual

DESCRIPTIONS

FC901 SYSTEM DESCRIPTION

The FC901 is a compact but powerful standalone fire alarm control panel. It features advanced
addressable fire detection, keypad and offline programming, notification circuits, a 160 by 64
dots LCD display and event history retention capability. It's typical configuration includes a
power supply, a signaling addressable device circuit, two notification appliance circuits (NAC),
Digital Alarm Communication Transmitter (DACT), four system status relays and a USB
programming port.
All the components of the FC901 control panel are mounted in an 18.1" x 16.5" enclosure. The
FC901 has only one electronic main board which integrates most functional parts together (the
CPU board is mounted to main board before delivery), including DACT, System Display,
signaling line circuit, NAC, serial interface circuits, system status relays, programming port and
battery charging circuit. The main board is mounted on the supporting frame, and it provides
the connections for external field wiring. An optional city tie module can be mounted on the
backside of the main board. The power supply is located under the main board and supporting
frame.
The FC901 supports English and Spanish operation menu for user selection. When the tool
language changes from English to Spanish, it is recommended, but not necessary, to create a
new Spanish configuration and upload it to the panel.
The FC901 features one LCD screen which is used to indicate the specific indications for
system events while LEDs indicate general panel status.
FC901 supports surface mounting and semi-flush mounting. Semi-flush mounting kits are
available for the enclosure.
System status information is provided by a 160 by 64 dots (7 by 26 characters), backlit LCD
and by discrete LED indicators for major control panel functions.
The LCD is used to display event data, including alarms and troubles conditions, zone or
device custom identification of messages, and a log of the system event history. A back light is
included in the display to assure visibility in low light. To conserve power, the back light is only
activated during a reported event or on operation of a display control button.
Individual LEDs on the panel are provided to indicate ALARM, SUPERVISORY, TROUBLE,
NAC SILENCED, AUDIBLES ON, SYSTEM GROUND FAULT and SYSTEM POWER. Direct
push-button controls are provided for SILENCE, UNSILENCE, ACKNOWLEDGE, MENU, OK,
CANCEL, RESET and a four-way button for menu navigation.

Power Supply

A 26V (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 12-
18 AH sealed lead-acid batteries within code requirements for up to 24 hours of normal
standby operation plus 5 minutes of alarm operation. The battery will be automatically
disconnected at low battery voltage to prevent deep discharge and battery damage.
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