{"product_id":"allen-bradley-1797-ps2e2-plc-power-supply-modules","title":"Allen-Bradley 1797-PS2E2 PLC Power Supply Modules","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1797-PS2E2\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1797-PS2E2\u003c\/strong\u003e Intrinsic Safety Power Supply, operates as a dedicated hardware component for converting non-incendive field power into intrinsically safe bus power within FLEX Ex I\/O backplane architectures.\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\u003e1797-PS2E2\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\u003e11.99 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard FLEX Ex flameproof\/explosion-proof enclosure footprint\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 deg C to 70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e18-32 VDC input range, 1.6 A max current draw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Protection\u003c\/td\u003e\n\u003ctd\u003eIntrinsically Safe (Ex i) output limits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eATEX certified for explosive atmospheres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection Type\u003c\/td\u003e\n\u003ctd\u003eIS terminal block connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBus Support\u003c\/td\u003e\n\u003ctd\u003eFLEX Ex backplane power delivery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eDeterministic Network Backplane and Interface Performance\u003c\/h3\u003e\n\u003cp\u003eDesigned to deliver galvanically isolated power to hazardous area I\/O drops, the power supply module converts standard 18-32 VDC bulk input into energy-limited output rails for backplane communication buses. Integrated current-limiting Zener networks and fast-acting crowbar circuits prevent electrical fault propagation from reaching downstream I\/O modules and intrinsic safety field devices. High noise rejection filters suppress switching ripple and common-mode transients, ensuring deterministic signal conversion and backplane bus stability in high-density hazardous location deployments.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the 1797-PS2E2 supply power directly to non-IS standard FLEX I\/O modules?\u003c\/p\u003e\n\u003cp\u003eA: No, the 1797-PS2E2 is specifically designed with intrinsically safe voltage and current limiting parameters for use exclusively with FLEX Ex (1797 series) hazardous location modules.\u003c\/p\u003e\n\u003cp\u003eQ: How is galvanic isolation maintained between the power input and the IS output bus?\u003c\/p\u003e\n\u003cp\u003eA: Internal multi-stage isolation transformers and optical isolators separate the 18-32 VDC field power input from the energy-limited IS output terminals, preventing earth fault loop currents.\u003c\/p\u003e\n\u003cp\u003eQ: Does the module support hot-swapping inside ATEX Zone 1 \/ Zone 2 environments?\u003c\/p\u003e\n\u003cp\u003eA: Hot-swapping must strictly adhere to site-specific hazardous area work permits; however, the internal IS circuitry allows live module insertion and removal without risking thermal ignition.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eMount the unit securely to a rigid enclosure backplate or heavy-duty DIN-rail structure to accommodate its 11.99 lbs physical mass. Ensure primary input wiring (18-32 VDC) is physically segregated from intrinsically safe output field wiring by a minimum clearance of 50 mm or using grounded metallic barriers in compliance with NEC\/IECEx hazardous location wiring standards. Verify that the protective earth (PE) grounding lug is bonded directly to the main cabinet ground bus with a low-impedance conductor to guarantee proper surge voltage suppression and intrinsic safety grounding.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52783458648344,"sku":"1797-PS2E2","price":270.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/3483\/3688\/files\/1797-PS2E2_Cocoai.jpg?v=1790583943","url":"https:\/\/www.innoplcsync.com\/products\/allen-bradley-1797-ps2e2-plc-power-supply-modules","provider":"InnoPLC Sync Co., Ltd.","version":"1.0","type":"link"}