{"product_id":"1771-p4s1-allen-bradley-plc-5-series-power-supply-modules","title":"1771-P4S1 Allen-Bradley PLC-5 Series Power Supply Modules","description":"\u003cp\u003eConfigured for 100V AC main conversion and local logic voltage generation in 1771 I\/O chassis, the \u003cstrong\u003eAllen-Bradley 1771-P4S1\u003c\/strong\u003e (\u003cstrong\u003e1771-P4S1\/A\u003c\/strong\u003e Power Supply) provides direct physical\/electrical execution.\u003c\/p\u003e\n\u003ch3\u003eHardware Identification \u0026amp; Revision Index\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Catalog Number\u003c\/strong\u003e: 1771-P4S1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlternate Spare Codes\u003c\/strong\u003e: 1771-P4S1\/A, 1771-P4S1\/B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArchitecture Line\u003c\/strong\u003e: PLC-5 1771 Platform\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunctional Designation\u003c\/strong\u003e: Rack-Mount AC Input Power Supply Unit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Parameters \u0026amp; Electrical Ratings\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-P4S1 \/ 1771-P4S1\/A\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\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.86 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e3.2 x 15.5 x 26.8 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e100V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current\u003c\/td\u003e\n\u003ctd\u003e8 A\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\u003e100V AC Line Supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTariff Code\u003c\/td\u003e\n\u003ctd\u003e8504409520\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eDeterministic Power Routing \u0026amp; Backplane Velocity Integration\u003c\/h3\u003e\n\u003cp\u003eThe 1771-P4S1 conditions incoming 100V AC power into a regulated 5V DC bus rail to power backplane logic operations. Maintaining steady DC bus stability preserves backplane bus communication velocity across adjacent I\/O slots while ensuring consistent firmware flash compatibility during intensive instruction execution cycles in PLC-5 architectures.\u003c\/p\u003e\n\u003ch3\u003ePackage Dispatch Summary\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x 1771-P4S1 Power Supply Module\u003c\/li\u003e\n\u003cli\u003e1 x Printed Panel Installation Instruction Sheet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCabinet Installation \u0026amp; Safety Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Isolation\u003c\/strong\u003e: De-energize the main 100V AC feed and chassis backplane prior to inserting or removing the power module.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis Insertion\u003c\/strong\u003e: Align the unit with the guide rails in the designated left-most power supply slot of the 1771 chassis and slide until fully seated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEarthing Requirements\u003c\/strong\u003e: Connect the enclosure protective earth conductor to the main chassis grounding lug to mitigate electrical noise.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What input voltage is required to operate the 1771-P4S1 power supply?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module requires a nominal 100V AC supply feed to generate internal DC backplane voltages.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What output voltage and current does the unit supply to the backplane?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1771-P4S1 supplies a regulated 5V DC output rated for up to 8 A load current across the backplane bus.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What hardware revisions correspond to the spare codes 1771-P4S1\/A and 1771-P4S1\/B?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThese catalog numbers represent Series A and Series B factory revisions of the base 1771-P4S1 hardware.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the 1771-P4S1 module be installed or removed while the chassis is powered?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo, inserting or removing the unit under live power can cause electrical arcing and damage backplane circuitry.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What are the physical dimensions of the unit for shipping calculations?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe estimated shipping dimensions measure 3.2 x 15.5 x 26.8 cm with a package weight of 0.86 kg.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What standard operating ambient temperature range applies to this unit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1771-P4S1 operates reliably within an ambient panel environment temperature range of 0 to 60 deg C.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the 1771-P4S1 provide field-side power for external sensors?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo, the 5V DC output is dedicated exclusively to supplying internal backplane logic for chassis modules.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Where is the 1771-P4S1 module manufactured?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1771-P4S1 power supply module is manufactured in the United States.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":46066444239021,"sku":"1771-P4S1","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/allen-bradley_1771-p4s1_1.jpg?v=1786543880","url":"https:\/\/www.maxwellplc.com\/products\/1771-p4s1-allen-bradley-plc-5-series-power-supply-modules","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}