{"schemaVersion":1,"slug":"microgrid-mode-command-authority-selector","name":"Microgrid mode-command authority selector","kind":"symbol","abbreviation":"MMAS","aliases":["Microgrid operating-mode controls","microgrids Microgrid operating-mode controls","microgrids","Microgrids","Local and remote authority","Accepted mode request"],"category":"microgrid-systems","drawingTypes":["Schematic"],"referenceFamilies":["Manufacturer"],"summary":"Selects the authorized origin of operating-mode requests according to the control philosophy.","description":["Selects the authorized origin of operating-mode requests according to the control philosophy. A microgrid operating-mode function coordinates how local sources and loads relate to the utility connection. The selected mode, the measured electrical condition and the actual switching configuration can differ during a transition.","In a microgrid serving a switchroom and industrial loads, the controller can move between grid-connected and islanded operating states only through its defined transition logic. Each state needs identifiable source roles and feedback. For this reference, the drawing identifies “Local and remote authority” at the input and “Accepted mode request” at the output. Authority does not bypass electrical interlocks.","Show the requested mode, entry conditions, completion feedback and failure indication. These functional blocks explain control responsibilities and do not specify a ready-to-use operating sequence or grid-connection approval. 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: Local and remote authority. Identify its source device or document and the state represented on the drawing.","Follow the named output: Accepted mode request. Cross-reference its destination and separate the command from confirmation that the equipment responded.","Authority does not bypass electrical interlocks.","Show the requested mode, entry conditions, completion feedback and failure indication. These functional blocks explain control responsibilities and do not specify a ready-to-use operating sequence or grid-connection approval."],"drawingChecklist":["Label the source and connection reference for local and remote authority.","Identify the destination and defined state of accepted mode request.","Record the equipment or control-document revision supporting this functional block.","Check this application limit in the project design: Authority does not bypass electrical interlocks."],"distinction":"Authority does not bypass electrical interlocks. 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":"Microgrids"},{"label":"Input / boundary","value":"Local and remote authority"},{"label":"Output / connection","value":"Accepted mode request"},{"label":"Lookup label","value":"MMAS is a library lookup label, not a standard device designation."}],"references":[{"sourceId":"pi26-mg-modes","relevance":"Public technical context for microgrid operating-mode controls. Grid-connected and island modes, transitions, topology and authority. The application text and educational graphic are independently authored; the publisher does not certify this representation."}],"related":["microgrid-controller","grid-forming-inverter","microgrid-operating-mode-mismatch-alarm"],"artwork":"pi26-microgrid-mode-command-authority-selector","publishedOn":"2026-11-03","updatedOn":"2026-11-03","provenance":"independent-public-research","representation":{"type":"functional-block","focus":"microgrids","family":"microgrid-modes","input":"Local and remote authority","output":"Accepted mode request"},"plainEnglish":{"title":"What this block does","introduction":"Selects the authorized origin of operating-mode requests according to the control philosophy.","example":"In a microgrid serving a switchroom and industrial loads, the controller can move between grid-connected and islanded operating states only through its defined transition logic. Each state needs identifiable source roles and feedback. For this reference, the drawing identifies “Local and remote authority” at the input and “Accepted mode request” at the output. Authority does not bypass electrical interlocks.","drawings":"Start at the named input: Local and remote authority. Identify its source device or document and the state represented on the drawing. Follow the named output: Accepted mode request. Cross-reference its destination and separate the command from confirmation that the equipment responded.","terms":[{"name":"Input","meaning":"Local and remote authority"},{"name":"Output","meaning":"Accepted mode request"},{"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":["Local and remote authority","MMAS","Accepted mode request"],"caption":"A reading guide. The entry's original illustration and input/output facts describe this application.","sources":[{"label":"Microgrid operating modes and transitions management","url":"https://productinfo.se.com/emol_functional_specifications/doca0371_emol_functionalspecifications/EN/DOCA0371_EMOL_Functional_Specifications_DD00894746.xml/%24/EMOL_OperatingModesandTransitionsManagement_DD00895904"}],"profileId":"power-installation-microgrid-modes"},"url":"https://eloragrid.ai/symbols/microgrid-mode-command-authority-selector","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/microgrid-mode-command-authority-selector.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"pi26-mg-modes","publisher":"Schneider Electric","title":"Microgrid operating modes and transitions management","url":"https://productinfo.se.com/emol_functional_specifications/doca0371_emol_functionalspecifications/EN/DOCA0371_EMOL_Functional_Specifications_DD00894746.xml/%24/EMOL_OperatingModesandTransitionsManagement_DD00895904","scope":"Grid-connected and island modes, transitions, topology and authority.","type":"manufacturer","checkedOn":"2026-11-03","reuse":"link-only","relevance":"Public technical context for microgrid operating-mode controls. Grid-connected and island modes, transitions, topology and authority. The application text and educational graphic are independently authored; the publisher does not certify this representation."}]}