{"product_id":"allen-bradley-1769-pb4-compactlogix-power-supply-module","title":"Allen-Bradley 1769-PB4 CompactLogix Power Supply Module","description":"\u003cp\u003eConfigured for internal DC backplane voltage conversion and field-side power distribution in CompactLogix controllers, the \u003cstrong\u003eAllen-Bradley 1769-PB4\u003c\/strong\u003e (\u003cstrong\u003e1769-PB4\u003c\/strong\u003e Power Supply) provides direct physical\/electrical execution.\u003c\/p\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 \/ Global Manufacturing standard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.00 lbs (0.45 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard 1769 Compact I\/O expansion module form factor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C (32 to 140 deg F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eInput power required for 14.5 W output delivery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e19.2-31.2 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Power\u003c\/td\u003e\n\u003ctd\u003e14.5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInrush Current Rating\u003c\/td\u003e\n\u003ctd\u003e30 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley CompactLogix 1769 I\/O Expansion Banks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eCompactLogix I\/O Density Scaling \u0026amp; Backplane Bus Power Integration\u003c\/h3\u003e\n\u003cp\u003eThe 1769-PB4 connects to the 1769 expansion rail to deliver regulated internal logic power, supporting high I\/O density scaling across adjacent digital and analog modules. By converting incoming 19.2-31.2 VDC field power to stable internal bus potentials, it ensures consistent operation of localized module logic without causing backplane bus communication velocity degradation across the CompactLogix system.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the 1769-PB4 power supply module be replaced under load while the CompactLogix backplane is active?\u003c\/p\u003e\n\u003cp\u003eA: No, hot-swapping power supplies on the 1769 backplane is not supported. Disconnect incoming 24 VDC supply power before removing or installing the module to prevent electrical arcing or logic disruption.\u003c\/p\u003e\n\u003cp\u003eQ: How does the module handle high inrush current during initial power-up?\u003c\/p\u003e\n\u003cp\u003eA: The internal circuitry of the 1769-PB4 accommodates an inrush current rating up to 30 A, preventing false tripping of upstream DC power sources during cold startup cycles.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eIsolate and lock out incoming 19.2-31.2 VDC field power before mounting the module to the CompactLogix assembly.\u003c\/li\u003e\n\u003cli\u003eAlign the tongue-and-groove side connectors of the 1769-PB4 with adjacent 1769 I\/O modules or controller housing.\u003c\/li\u003e\n\u003cli\u003eSlide the module onto the DIN rail until the locking lever snaps securely into place.\u003c\/li\u003e\n\u003cli\u003eConnect incoming DC power leads to the designated screw terminals, ensuring correct wire gauge and polarity verification.\u003c\/li\u003e\n\u003cli\u003eSecure the field wiring cover and verify functional output status via front panel LED diagnostics upon re-energization.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":48747641700542,"sku":"1769-PB4","price":89.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/1769-PB4_2.jpg?v=1786956086","url":"https:\/\/www.autooiltech.com\/products\/allen-bradley-1769-pb4-compactlogix-power-supply-module","provider":"AutoOilTech Limited","version":"1.0","type":"link"}