{"schemaVersion":1,"slug":"switchroom-access-control-power-interface","name":"Switchroom access-control power interface","kind":"symbol","abbreviation":"SAPI","aliases":["Switchroom lighting and access interfaces","switchrooms Switchroom lighting and access interfaces","switchrooms","Switchrooms","Access-control auxiliary supply","Access controller power"],"category":"installation-communications","drawingTypes":["Schematic"],"referenceFamilies":["Manufacturer"],"summary":"Identifies the separately supplied electrical interface serving the room access controller.","description":["Identifies the separately supplied electrical interface serving the room access controller. Lighting and access interfaces coordinate the electrical-room service circuits and their supervision. Normal lighting, emergency illumination and access indication have different power sources and purposes.","In a switchroom, a normal lighting branch may be switched locally while the specified emergency luminaires remain connected to their own backed-up or integral supply. For this reference, the drawing identifies “Access-control auxiliary supply” at the input and “Access controller power” at the output. Door release behavior follows the access and fire design.","Identify the lighting supply type, controlled circuit and the meaning of any test or failure output. A drawing symbol does not establish illumination levels, emergency duration or an approved egress arrangement. 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: Access-control auxiliary supply. Identify its source device or document and the state represented on the drawing.","Follow the named output: Access controller power. Cross-reference its destination and separate the command from confirmation that the equipment responded.","Door release behavior follows the access and fire design.","Identify the lighting supply type, controlled circuit and the meaning of any test or failure output. A drawing symbol does not establish illumination levels, emergency duration or an approved egress arrangement."],"drawingChecklist":["Label the source and connection reference for access-control auxiliary supply.","Identify the destination and defined state of access controller power.","Record the equipment or control-document revision supporting this functional block.","Check this application limit in the project design: Door release behavior follows the access and fire design."],"distinction":"Door release behavior follows the access and fire design. 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":"Access-control auxiliary supply"},{"label":"Output / connection","value":"Access controller power"},{"label":"Lookup label","value":"SAPI is a library lookup label, not a standard device designation."}],"references":[{"sourceId":"pi26-room-services","relevance":"Public technical context for switchroom lighting and access 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-maintained-emergency-luminaire","iec-exit-sign-luminaire","switchroom-emergency-door-release-interface"],"artwork":"pi26-switchroom-access-control-power-interface","publishedOn":"2026-11-03","updatedOn":"2026-11-03","provenance":"independent-public-research","representation":{"type":"functional-block","focus":"switchrooms","family":"room-lighting","input":"Access-control auxiliary supply","output":"Access controller power"},"plainEnglish":{"title":"What this block does","introduction":"Identifies the separately supplied electrical interface serving the room access controller.","example":"In a switchroom, a normal lighting branch may be switched locally while the specified emergency luminaires remain connected to their own backed-up or integral supply. For this reference, the drawing identifies “Access-control auxiliary supply” at the input and “Access controller power” at the output. Door release behavior follows the access and fire design.","drawings":"Start at the named input: Access-control auxiliary supply. Identify its source device or document and the state represented on the drawing. Follow the named output: Access controller power. Cross-reference its destination and separate the command from confirmation that the equipment responded.","terms":[{"name":"Input","meaning":"Access-control auxiliary supply"},{"name":"Output","meaning":"Access controller power"},{"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":["Access-control auxiliary supply","SAPI","Access controller power"],"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-room-lighting"},"url":"https://eloragrid.ai/symbols/switchroom-access-control-power-interface","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/switchroom-access-control-power-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 lighting and access 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."}]}