{"product_id":"allen-bradley-1769-pb4-compactlogix-power-supply-module","title":"Allen-Bradley 1769-PB4 CompactLogix Power Supply Module","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1769-PB4\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1769-PB4\u003c\/strong\u003e DC Power Supply Module, operates as a dedicated hardware component for internal system bus power distribution within Allen-Bradley CompactLogix platforms.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1769\u003c\/strong\u003e: Compact I\/O hardware platform designation for Allen-Bradley CompactLogix systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePB\u003c\/strong\u003e: Direct current (DC) power supply hardware classification code.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4\u003c\/strong\u003e: Power output capacity designation variant within the 1769 hardware family.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\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\u003e1769-PB4\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\u003e0.45 kg (1.00 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard 1769 Compact I\/O power supply width\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\u003e14.5 W output capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e19.2 to 31.2 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003e5 VDC and 24 VDC backplane supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Bus Current\u003c\/td\u003e\n\u003ctd\u003e4.0 A at 5 VDC, 2.0 A at 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley CompactLogix 1769 I\/O banks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus Communication and Deterministic I\/O\u003c\/h3\u003e\n\u003cp\u003eThe Allen-Bradley 1769-PB4 supply delivers regulated system power across high-speed backplane bus communication velocity pathways to drive CompactLogix processors and adjacent I\/O cards. Operating reliably across EtherNet\/IP deterministic networks, the module provides stable voltage conversion and thermal dissipation control to sustain continuous I\/O density scaling. Integrated firmware flash compatibility and power distribution monitoring prevent logic resets during heavy field wiring inductive load switching across localized control racks.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How many I\/O modules can the 1769-PB4 power supply drive on a single CompactLogix expansion bank?\u003c\/p\u003e\n\u003cp\u003eA: The module can power local I\/O modules up to its current limits (4.0 A at 5 VDC and 2.0 A at 24 VDC) within its maximum power supply distance rating limits.\u003c\/p\u003e\n\u003cp\u003eQ: Does the 1769-PB4 support reverse polarity protection on its DC input terminals?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the unit incorporates built-in input surge suppression and reverse polarity defense circuits to prevent internal component damage during field wiring installation.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eShut off all primary 24 VDC external power sources before connecting field wiring to the 1769-PB4 input terminal strip.\u003c\/li\u003e\n\u003cli\u003eMount the power supply securely on the DIN rail adjacent to the CompactLogix controller or local expansion rack bank.\u003c\/li\u003e\n\u003cli\u003eWire the 19.2-31.2 VDC power lines using appropriate gauge copper conductors, securing terminal screws to specified torque limits.\u003c\/li\u003e\n\u003cli\u003eConnect the protective earth (PE) terminal directly to the enclosure ground bus bar using a short, low-impedance grounding wire.\u003c\/li\u003e\n\u003cli\u003eLock the adjacent module bus connectors together to maintain reliable backplane voltage conductivity and mechanical stability.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52637825663256,"sku":"1769-PB4","price":270.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/3483\/3688\/files\/1769-PB4_Cocoai.jpg?v=1788920532","url":"https:\/\/www.innoplcsync.com\/products\/allen-bradley-1769-pb4-compactlogix-power-supply-module","provider":"InnoPLC Sync Co., Ltd.","version":"1.0","type":"link"}