{"product_id":"emerson-1c31157g02-digital-input","title":"Emerson 1C31157G02 Digital Input","description":"\u003cp\u003eThe \u003cstrong\u003eEmerson 1C31157G02\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1C31157G02\u003c\/strong\u003e SOE Input Module, operates as a dedicated hardware component for high-voltage contact acquisition within Ovation DCS platforms. This module conditions raw 125 V AC\/DC field state transitions from breaker auxiliaries and trip contacts, applying millisecond-resolution timestamps before routing event records across the system backplane.\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\u003e1C31157G02\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eEmerson\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\u003e1.27 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e126.5 mm x 221.5 mm x 65 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-40 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\u003eStandard Backplane Bus Draw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eSequence of Events (SOE) Digital Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Input Voltage\u003c\/td\u003e\n\u003ctd\u003e125 V AC\/DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDielectric Isolation\u003c\/td\u003e\n\u003ctd\u003e1000 V AC\/DC logic-to-field isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoop Signal Protocol\u003c\/td\u003e\n\u003ctd\u003e4-20 mA HART loop protocol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eDCS Architecture \u0026amp; Loop Processing\u003c\/h3\u003e\n\u003cp\u003eIntegrated directly into the Ovation I\/O rack framework, the module provides channel-to-channel isolation and 1000 V AC\/DC dielectric isolation to prevent high-voltage industrial transients from compromising internal processor buses. Input conditioning channels support analog and discrete signaling pathways, operating alongside standard 4-20 mA HART loop protocol communication loops. Thermal compensation hardware, including cold junction compensation (CJC) references, preserves signal detection accuracy across broad operating temperature ranges.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the 1C31157G02 module be hot-swapped while backplane power is active?\u003c\/p\u003e\n\u003cp\u003eA: Field voltage and rack power must be de-energized or verified safe per Ovation maintenance procedures before removing or inserting the module.\u003c\/p\u003e\n\u003cp\u003eQ: What timestamp resolution does this module provide for sequence of events recording?\u003c\/p\u003e\n\u003cp\u003eA: The board captures contact state transitions with millisecond-level timestamp accuracy for precise post-event fault analysis.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect and lock out all 125 V AC\/DC field contact power supplies prior to module insertion or wiring work.\u003c\/li\u003e\n\u003cli\u003eWear an ESD grounding wrist strap attached to the cabinet ground stud during module handling.\u003c\/li\u003e\n\u003cli\u003eCheck the backplane connector pins for physical damage, contamination, or corrosion before sliding the unit into the slot.\u003c\/li\u003e\n\u003cli\u003eAlign the module card edges with the I\/O base guide tracks and push firmly until the backplane connector fully seats.\u003c\/li\u003e\n\u003cli\u003eSecure all panel retention screws to ensure continuous chassis earth ground bonding and mechanical stability.\u003c\/li\u003e\n\u003cli\u003eTerminate field wiring shields to a single-point cabinet ground lug to maintain isolation integrity and noise rejection.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Emerson","offers":[{"title":"Default Title","offer_id":66726582648947,"sku":"1C31157G02","price":233.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/9690A38G53_Cocoai_f68e2b30-dde3-40fe-9e1e-e0ff0b4ddf3d.jpg?v=1790559908","url":"https:\/\/www.dcssupplier.com\/ar\/products\/emerson-1c31157g02-digital-input","provider":"DcsSupplier Limited","version":"1.0","type":"link"}