{"product_id":"allen-bradley-1797-bic-flex-ex-bus-isolator-module","title":"Allen-Bradley 1797-BIC FLEX Ex Bus Isolator Module","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1797-BIC\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1797-BIC\u003c\/strong\u003e FLEX Ex Bus Extender Isolator Module, operates as a dedicated hardware component for galvanic isolation and signal propagation across intrinsically safe backplane segments within FLEX Ex I\/O systems.\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-BIC\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\u003e1.32 lbs (0.60 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard FLEX Ex module footprint\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 to 70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e2.5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e18-32 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBus Current Rating\u003c\/td\u003e\n\u003ctd\u003e150 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eBus Isolator \/ Extender Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Format\u003c\/td\u003e\n\u003ctd\u003eDIN-rail \/ Base unit assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus Communication Velocity and Signal Isolation\u003c\/h3\u003e\n\u003cp\u003eThe 1797-BIC module establishes an intrinsically safe galvanic isolation barrier across backplane expansion segments in FLEX Ex chassis layouts. Operating with a nominal backplane current draw of 150 mA across an 18-32 VDC supply range, the unit maintains deterministic backplane bus communication velocity while preventing energy transfer into hazardous location zones. Channel-to-bus logic circuits ensure that transient bus noise and voltage spikes are clamped within specified safety thresholds without degrading high-speed serial packet transmission between local adapter bases and remote I\/O terminal blocks.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the 1797-BIC module be removed or inserted under field power?\u003c\/p\u003e\n\u003cp\u003eA: Hot-swapping the 1797-BIC must follow hazardous location field protocols. While the module is intrinsically safe, removing the unit interrupts backplane bus communications to downstream FLEX Ex modules. Powering down the local segment is recommended to maintain system deterministic control states.\u003c\/p\u003e\n\u003cp\u003eQ: What is the primary purpose of the 1797-BIC in a FLEX Ex system architecture?\u003c\/p\u003e\n\u003cp\u003eA: The 1797-BIC serves as a physical galvanic barrier and signal interface between non-intrinsically safe or standard power segments and intrinsically safe FLEX Ex backplane I\/O clusters, preserving signal integrity across high-density I\/O node layouts.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eMount the module onto the standard DIN rail adjacent to the target FLEX Ex terminal base assembly, ensuring positive mechanical latch engagement.\u003c\/li\u003e\n\u003cli\u003eVerify that field wiring connections to the 18-32 VDC power supply adhere to proper polarity standards before applying bus power.\u003c\/li\u003e\n\u003cli\u003eKeep field signal cables segregated from high-voltage AC lines, routing cables through dedicated wiring channels.\u003c\/li\u003e\n\u003cli\u003eEnsure the DIN-rail grounding shoe makes clean, low-impedance mechanical contact with an unpainted, earth-grounded metal rail surface.\u003c\/li\u003e\n\u003cli\u003eSecure all module locking tabs to prevent vibration-induced disengagement in heavy industrial environments.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":48761071698110,"sku":"1797-BIC","price":83.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/1797-BIC.png?v=1787198033","url":"https:\/\/www.autooiltech.com\/products\/allen-bradley-1797-bic-flex-ex-bus-isolator-module","provider":"AutoOilTech Limited","version":"1.0","type":"link"}