{"product_id":"1771-p7-allen-bradley-plc-5-power-supply-module","title":"1771-P7 Allen-Bradley PLC-5 Power Supply Module","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1771-P7\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1771-P7\u003c\/strong\u003e Power Supply Module, operates as a dedicated hardware component for converting AC line voltage into regulated 5 VDC power within Allen-Bradley PLC-5 1771 I\/O chassis systems.\u003c\/p\u003e\n\u003ch3\u003eHardware Revision Matrix \u0026amp; Part Number Variants\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1771-P7\u003c\/strong\u003e power supply assembly encompasses multiple factory revision designations, including hardware series 1771-P7\/A, 1771-P7\/B, 1771-P7\/C, and 1771-P7\/D. Each revision retains physical slot form-factor compatibility and electrical output ratings across the 1771 backplane architecture, ensuring standardized chassis mounting and replacement without panel modifications.\u003c\/p\u003e\n\u003ch3\u003eTechnical \u0026amp; Operating Specifications\u003c\/h3\u003e\n\u003cfigure\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1771-P7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.6 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e11.5 x 17.5 x 31.5 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e120\/220 VAC nominal input power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e120\/220 VAC selectable (50\/60 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current\u003c\/td\u003e\n\u003ctd\u003e16 A at 5 VDC backplane output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTariff Code\u003c\/td\u003e\n\u003ctd\u003e8537101190\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eSystem Integration \u0026amp; Deterministic Backplane Powering\u003c\/h3\u003e\n\u003cp\u003eThe power supply unit delivers a regulated 16 A 5 VDC rail across the 1771 backplane bus, driving processor cards, communication adaptors, and high-density digital or analog I\/O modules. Stable DC voltage distribution prevents bus communication jitter on Profinet \/ EtherNet\/IP deterministic networks connected via upstream bridge cards, maintaining predictable scan execution and firmware flash compatibility across extended I\/O density scaling configurations.\u003c\/p\u003e\n\u003ch3\u003ePackage Component Checklist\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Allen-Bradley 1771-P7 Power Supply Module\u003c\/li\u003e\n\u003cli\u003e1 x AC Input Terminal Block Cover Assembly\u003c\/li\u003e\n\u003cli\u003e1 x System Installation Instruction Sheet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCabinet Mounting \u0026amp; Safety Wiring Sequence\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIsolate all AC mains power feeders before accessing or wiring the power supply terminal connections.\u003c\/li\u003e\n\u003cli\u003eMount the module securely in the designated power supply slot of the 1771 chassis card cage.\u003c\/li\u003e\n\u003cli\u003eSet the AC line selector switch to match the local utility supply (120 VAC or 220 VAC nominal).\u003c\/li\u003e\n\u003cli\u003eConnect phase, neutral, and protective earth conductors to the screw terminal strip using insulated ring lugs.\u003c\/li\u003e\n\u003cli\u003eVerify clean grounding to the central enclosure earth bar to suppress electrical noise and voltage spikes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEngineering Technical FAQ\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eWhat primary DC output current does the 1771-P7 deliver to the backplane?\u003c\/p\u003e\n\u003cp\u003eThe module supplies up to 16 A at 5 VDC directly to the 1771 chassis backplane power distribution rails.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat input line voltages are supported by the 1771-P7 power supply?\u003c\/p\u003e\n\u003cp\u003eIt accepts selectable 120 VAC or 220 VAC single-phase AC input sources operating at 50\/60 Hz line frequency.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCan the 1771-P7 module be installed or removed under live AC power?\u003c\/p\u003e\n\u003cp\u003eNo, AC mains supply voltage must be disconnected prior to inserting, removing, or wiring the module assembly.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat hardware revisions are covered under the 1771-P7 product code?\u003c\/p\u003e\n\u003cp\u003eValid factory hardware engineering revisions include models designated as 1771-P7\/A, 1771-P7\/B, 1771-P7\/C, and 1771-P7\/D.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow does the unit maintain power stability for deterministic backplane communication?\u003c\/p\u003e\n\u003cp\u003eIt provides tight output voltage regulation, reducing noise on the 5 VDC rail that supports local communication cards.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow is the protective conductor grounded during cabinet mounting?\u003c\/p\u003e\n\u003cp\u003eThe earth wire must connect from the terminal strip directly to the cabinet ground bus using low-impedance copper wire.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat ambient temperature range is allowable for continuous rack operation?\u003c\/p\u003e\n\u003cp\u003eThe assembly operates reliably within an ambient cabinet temperature envelope ranging from 0 deg C to 60 deg C.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the purpose of the front terminal shield cover?\u003c\/p\u003e\n\u003cp\u003eThe plastic shield covers high-voltage AC terminal connections to prevent accidental physical contact by maintenance crew.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":46066444370093,"sku":"1771-P7","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/allen-bradley_1771-p7_1.jpg?v=1786543616","url":"https:\/\/www.maxwellplc.com\/ga\/products\/1771-p7-allen-bradley-plc-5-power-supply-module","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}