{"product_id":"allen-bradley-1746-p7-slc-500-power-supply-module","title":"Allen-Bradley 1746-P7 SLC 500 Power Supply Module","description":"\u003ch1\u003eAllen-Bradley 1746-P7 SLC 500 Power Supply Module\u003c\/h1\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1746-P7\u003c\/strong\u003e, also cataloged as the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1746-P7 Power Supply Module\u003c\/strong\u003e, operates as a regulated DC power conversion unit for SLC 500 chassis backplane distribution, converting 10-30 VDC input into stabilized 5 VDC and 24 VDC rails for processor and I\/O module operation.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth class=\"last:pe-10\"\u003eParameter\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eSpecification\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\u003e1746-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\u003e2.19 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eSLC 500 standard module format (~5 x 2 x 6 in)\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\u003e50 to 75 W input power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e10-30 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003e5 VDC, 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current\u003c\/td\u003e\n\u003ctd\u003e5 VDC: up to 3.6 A \/ 24 VDC: up to 0.87 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInrush Current\u003c\/td\u003e\n\u003ctd\u003e20 A max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection\u003c\/td\u003e\n\u003ctd\u003e1746-F1 fuse or equivalent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eBackplane Power Conversion Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe 1746-P7 implements dual-mode input adaptation for 12 VDC and 24 VDC source configurations, adjusting internal switching regulation to maintain backplane stability under varying input headroom conditions. Output regulation maintains fixed 5 VDC logic rail and 24 VDC auxiliary rail for SLC 500 module bus operation.\u003c\/p\u003e\n\u003cp\u003eHold-up timing is dependent on input level and load condition, with controlled decay behavior during input dropout to preserve CPU execution state across transient disturbances. Backplane current delivery is limited to defined internal current capacity thresholds to prevent bus overstress during module population changes.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the module behave during input voltage drop below 10 VDC?\u003cbr\u003eA: The internal hold-up circuit maintains regulated output for a limited duration depending on load, after which backplane rails decay in a controlled shutdown sequence.\u003c\/p\u003e\n\u003cp\u003eQ: Can the 1746-P7 be used interchangeably with AC-input SLC 500 power supplies?\u003cbr\u003eA: No. The 1746-P7 is a DC-input architecture (10-30 VDC) and is not compatible with AC input supply modules without external conversion.\u003c\/p\u003e\n\u003cp\u003eQ: What limits backplane current delivery on the 5 VDC rail?\u003cbr\u003eA: The internal current capacity limiter restricts 5 VDC output based on input condition, with maximum output defined by 12 VDC or 24 VDC operating mode.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eInstall only in designated SLC 500 chassis power slot.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eVerify DC input polarity and voltage range before energization (10-30 VDC).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMaintain separation between DC input wiring and low-level signal cabling.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEnsure chassis grounding continuity before module insertion.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDo not exceed specified fuse rating (1746-F1 or equivalent).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eConfirm full seating of backplane connector prior to applying input power.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43537409933402,"sku":"1746-P7","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1746-P72.jpg?v=1782200333","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1746-p7-slc-500-power-supply-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}