# Fire cause-and-effect output matrix Canonical URL: https://eloragrid.ai/symbols/fire-cause-and-effect-output-matrix Publisher: Elora Grid Updated: 2026-11-03 Lookup label: FCOM Drawing use: Schematic Reference families: Manufacturer Representation: Functional block Installation focus: switchrooms Input: Defined fire events Output: Mapped electrical responses Shows the relationship between specified fire-system events and their assigned electrical interfaces. ## In plain English ### What this block does Shows the relationship between specified fire-system events and their assigned electrical interfaces. ### A simple example In a switchroom, the fire panel may report detection, system faults and a separately documented shutdown request to the station controller. These signals have different meanings and must not be combined into one unexplained alarm. For this reference, the drawing identifies “Defined fire events” at the input and “Mapped electrical responses” at the output. The approved cause-and-effect schedule governs each mapping. ### What the drawings help you do Start at the named input: Defined fire events. Identify its source device or document and the state represented on the drawing. Follow the named output: Mapped electrical responses. Cross-reference its destination and separate the command from confirmation that the equipment responded. ### Terms - Input: Defined fire events - Output: Mapped electrical responses - Application reference: An explanation of a named drawing function or circuit relationship; the project documents define the equipment and its connections. Concept diagram: Defined fire events → FCOM → Mapped electrical responses A reading guide. The entry's original illustration and input/output facts describe this application. - [Indoor substation: lighting, fire and auxiliary services](https://www.electrical-installation.org/enwiki/Indoor_substation) ## What it represents Shows the relationship between specified fire-system events and their assigned electrical interfaces. A fire-system interface passes defined indications and control requests between the fire installation and electrical equipment. The receiving circuit must identify the exact purpose of the signal and the equipment it affects. In a switchroom, the fire panel may report detection, system faults and a separately documented shutdown request to the station controller. These signals have different meanings and must not be combined into one unexplained alarm. For this reference, the drawing identifies “Defined fire events” at the input and “Mapped electrical responses” at the output. The approved cause-and-effect schedule governs each mapping. Use the coordinated fire cause-and-effect schedule to define each response. Original interface blocks describe signal roles without specifying suppression operation, evacuation behavior or life-safety performance. The functional block is an independent explanation of this named application. Equipment-specific ratings, terminal connections and operating conditions must be established in the project documentation. ## How to read it - Start at the named input: Defined fire events. Identify its source device or document and the state represented on the drawing. - Follow the named output: Mapped electrical responses. Cross-reference its destination and separate the command from confirmation that the equipment responded. - The approved cause-and-effect schedule governs each mapping. - Use the coordinated fire cause-and-effect schedule to define each response. Original interface blocks describe signal roles without specifying suppression operation, evacuation behavior or life-safety performance. ## Information to show or reference - Label the source and connection reference for defined fire events. - Identify the destination and defined state of mapped electrical responses. - Record the equipment or control-document revision supporting this functional block. - Check this application limit in the project design: The approved cause-and-effect schedule governs each mapping. ## Important distinction The approved cause-and-effect schedule governs each mapping. This reference describes the named application; it does not establish a new IEC graphical symbol, an ANSI device-function number or an exact manufacturer connection diagram. ## Facts - Representation: Functional block - Installation focus: Switchrooms - Input / boundary: Defined fire events - Output / connection: Mapped electrical responses - Lookup label: FCOM is a library lookup label, not a standard device designation. ## Public references - [Indoor substation: lighting, fire and auxiliary services](https://www.electrical-installation.org/enwiki/Indoor_substation) — Schneider Electric. Public technical context for switchroom fire and emergency interfaces. Lighting, emergency lighting, fire provisions and substation auxiliary services. Original cause-and-effect examples require project design. The application text and educational graphic are independently authored; the publisher does not certify this representation. ## Graphic scope Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.