Symbol names are limited to 32 characters.ĪM: Ammeters AN: Buzzers, horns, bells CB: Circuit breakers C0: Connectors/pins CR: Control relays DI: Din Rail DN: Device networks DO: Diodes DR: Drives DS: Disconnect switches EN: Enclosures/hardware FM: Frequency meters FS: Flow sensors FT: Foot switches FU: Fuses LR: Latching relays LS: Limit switches LT: Lights, pilot lights MISC: Miscellaneous MO: Motors MS: Motor starters/contactors NP: Nameplates OL: Overloads PB: Push buttons PE: Photo switches PLCIO: Programmable logic controllers PM: Power meters PNEU-ACT: Actuators PNEU-ALU: Lubricators PNEU-CYL: Cylinders PNEU-FLC: Flow Control PNEU-FLT: Filters PNEU-MET: Pressure Gauges PNEU-MFL: Silencers PNEU-MNF: Manifolds PNEU-MOT: Motors PNEU-NOZ: Nozzles PNEU-OPR: Push buttons PNEU-PMP: Pumps PNEU-TNK: Reservoirs PNEU-VAC: Suction PNEU-VLV: Valves PS: Pressure switches PW: Power supplies PX: Proximity switches RE: Resistors SS: Selector switches SU: Surge suppressors SW: Toggle switches TD: Timer relays TRMS: Terminal blocks TS: Temperature switches VM: Volt meters WO: Cables, multi-conductor cables WW: Wire ways The remaining characters are not specified. If the symbol is a contact, then the fifth character is a 1 for normally open, 2 for normally closed. The fourth character is generally a 2 for child contacts and 1 for everything else (parent or standalone component). The next two characters are reserved for family type (for example, PB for push buttons, CR for control relays, LS for limit switches). The first character is either "H" or "V" for horizontal or vertical wire insertion. Schematic Symbol Naming Convention Default Family Codes NFPA The symbols are located in \Users\Public\Documents\Autodesk\Acade \AcadeĪll paths defined under AutoCAD Options Files Support Files Search Path
AutoCAD Electrical provides library symbols that comply with the standards:
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