{"product_id":"honeywell-621-9933c-ipc-620-power-supply-module","title":"Honeywell 621-9933C IPC 620 Power Supply Module","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell 621-9933C\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e621-9933\u003c\/strong\u003e Power Supply Module, operates as a dedicated hardware component for converting line AC power to regulated internal backplane DC voltages within Honeywell IPC 620 processor racks.\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\u003e621-9933C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eHoneywell\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\u003e5.40 lbs (2.45 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard IPC 620 processor rack slot 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\u003eInput: 115\/230 VAC (47-63 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eProcessor Rack Power Supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current Rating\u003c\/td\u003e\n\u003ctd\u003e2 to 15 A (Backplane secondary output bus)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Line Voltage\u003c\/td\u003e\n\u003ctd\u003e115\/230 VAC selectable switch\/terminal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003e4-20 mA HART Loop Protocol and Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThe 621-9933C power supply module delivers regulated internal secondary power to the backplane bus, driving active processor modules and adjacent analog I\/O cards. High galvanic channel-to-channel isolation between primary AC power lines and backplane logic circuits prevents line noise from coupling into analog measurement channels processing 4-20 mA HART loop protocol signals. This isolation barrier prevents ground loop currents from destabilizing high-density process I\/O sub-networks.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does replacing the 621-9933C power supply module require powering down the processor rack?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The 621-9933C directly feeds the primary rack backplane bus; power must be completely isolated before extracting or inserting the supply module to prevent backplane bus transients.\u003c\/p\u003e\n\u003cp\u003eQ: How is the input operating voltage changed between 115 VAC and 230 VAC?\u003c\/p\u003e\n\u003cp\u003eA: Line voltage selection is configured via the physical jumper or selector terminal block located on the unit frame before primary AC power application.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eTurn off all incoming 115\/230 VAC main power feeds to the control cabinet before servicing the power supply slot.\u003c\/li\u003e\n\u003cli\u003eConfirm that the voltage select terminal or jumper on the 621-9933C matches the local AC power system supply (115 VAC or 230 VAC, 47-63 Hz).\u003c\/li\u003e\n\u003cli\u003eAlign the module card edges with the leftmost power slot guide rails of the Honeywell IPC 620 processor rack.\u003c\/li\u003e\n\u003cli\u003eSlide the module in firmly until the backplane power connectors fully seat, then secure top and bottom retaining screws.\u003c\/li\u003e\n\u003cli\u003eConnect AC line, neutral, and heavy-gauge protective earth ground wires to the terminal block, ensuring ground resistance remains under 1 Ohm.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":67662089257269,"sku":"621-9933C","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/621-9933C.png?v=1791537933","url":"https:\/\/www.5gplc.com\/products\/honeywell-621-9933c-ipc-620-power-supply-module","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}