{"schemaVersion":1,"slug":"switchroom-fire-door-status-interface","name":"Switchroom fire-door status interface","kind":"symbol","abbreviation":"SFSI","aliases":["Switchroom fire and emergency interfaces","switchrooms Switchroom fire and emergency interfaces","switchrooms","Switchrooms","Door position contact","Door status indication"],"category":"installation-communications","drawingTypes":["Schematic"],"referenceFamilies":["Manufacturer"],"summary":"Receives the monitored fire-door position used by the room supervisory system.","description":["Receives the monitored fire-door position used by the room supervisory system. 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 “Door position contact” at the input and “Door status indication” at the output. Door status alone does not establish compartment integrity.","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."],"readingNotes":["Start at the named input: Door position contact. Identify its source device or document and the state represented on the drawing.","Follow the named output: Door status indication. Cross-reference its destination and separate the command from confirmation that the equipment responded.","Door status alone does not establish compartment integrity.","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."],"drawingChecklist":["Label the source and connection reference for door position contact.","Identify the destination and defined state of door status indication.","Record the equipment or control-document revision supporting this functional block.","Check this application limit in the project design: Door status alone does not establish compartment integrity."],"distinction":"Door status alone does not establish compartment integrity. 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":[{"label":"Representation","value":"Functional block"},{"label":"Installation focus","value":"Switchrooms"},{"label":"Input / boundary","value":"Door position contact"},{"label":"Output / connection","value":"Door status indication"},{"label":"Lookup label","value":"SFSI is a library lookup label, not a standard device designation."}],"references":[{"sourceId":"pi26-room-services","relevance":"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."}],"related":["iec-fire-alarm-control-panel-plan-symbol","ga-battery-fire-system-interface-panel","fire-interface-healthy-loop-supervision"],"artwork":"pi26-switchroom-fire-door-status-interface","publishedOn":"2026-11-03","updatedOn":"2026-11-03","provenance":"independent-public-research","representation":{"type":"functional-block","focus":"switchrooms","family":"fire-interfaces","input":"Door position contact","output":"Door status indication"},"plainEnglish":{"title":"What this block does","introduction":"Receives the monitored fire-door position used by the room supervisory system.","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 “Door position contact” at the input and “Door status indication” at the output. Door status alone does not establish compartment integrity.","drawings":"Start at the named input: Door position contact. Identify its source device or document and the state represented on the drawing. Follow the named output: Door status indication. Cross-reference its destination and separate the command from confirmation that the equipment responded.","terms":[{"name":"Input","meaning":"Door position contact"},{"name":"Output","meaning":"Door status indication"},{"name":"Application reference","meaning":"An explanation of a named drawing function or circuit relationship; the project documents define the equipment and its connections."}],"diagram":"flow","steps":["Door position contact","SFSI","Door status indication"],"caption":"A reading guide. The entry's original illustration and input/output facts describe this application.","sources":[{"label":"Indoor substation: lighting, fire and auxiliary services","url":"https://www.electrical-installation.org/enwiki/Indoor_substation"}],"profileId":"power-installation-fire-interfaces"},"url":"https://eloragrid.ai/symbols/switchroom-fire-door-status-interface","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/switchroom-fire-door-status-interface.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"pi26-room-services","publisher":"Schneider Electric","title":"Indoor substation: lighting, fire and auxiliary services","url":"https://www.electrical-installation.org/enwiki/Indoor_substation","scope":"Lighting, emergency lighting, fire provisions and substation auxiliary services. Original cause-and-effect examples require project design.","type":"manufacturer","checkedOn":"2026-11-03","reuse":"link-only","relevance":"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."}]}