{"product_id":"emerson-1c31157g03-digital-input-modules","title":"Emerson 1C31157G03 Digital Input Modules","description":"\u003cp\u003eThe \u003cstrong\u003eEmerson 1C31157G03\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1C31157G03\u003c\/strong\u003e Sequence of Events Module, operates as a dedicated hardware component for high-precision digital input timestamping and contact state acquisition within Emerson Westinghouse Ovation DCS platforms.\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\u003e1C31157G03\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eEmerson Westinghouse Ovation\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\u003e0.30 kg (0.66 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e12.1 x 5.4 x 14.0 cm\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\u003e24 VDC \/ 48 VDC wetting voltage field power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eSequence of Events (SOE) Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Voltage Nominal\u003c\/td\u003e\n\u003ctd\u003e48 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eGalvanic channel-to-backplane isolation\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-to-Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThe module utilizes optical and galvanic channel-to-channel isolation architecture to prevent field ground loops and high-voltage electrical noise from propagating into the core backplane logic. High-speed input filtering circuits paired with sub-millisecond hardware clock synchronization enable precise event recording during rapid system state changes. Differential isolation barriers preserve signal integrity across high-density digital contact loops, protecting internal processor paths against common-mode transient spikes.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What are the backplane extraction restrictions when replacing a 1C31157G03 module during system operation?\u003c\/p\u003e\n\u003cp\u003eA: Ensure ESD wrist straps are properly grounded before contact. Top and bottom retaining latches must be completely disengaged to release the module from the base chassis guide rails without applying bending torque to the DIN backplane connector pins.\u003c\/p\u003e\n\u003cp\u003eQ: How should field wiring shields be terminated for 48 VDC sequence of events channels?\u003c\/p\u003e\n\u003cp\u003eA: All field cable shields must terminate at a single point on the main cabinet enclosure ground bar. Double-ended grounding must be avoided to prevent circulating loop currents from triggering false digital state transitions or timestamp jitter.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eAlign the circuit card edges with the guide rails of the designated Ovation rack slot. Slide the module straight into the chassis until the rear connector seats firmly into the backplane bus interface. Tighten the front panel retention fasteners to 0.5 Nm torque to verify ground continuity and mechanically lock the module assembly against operational vibration.\u003c\/p\u003e\n\u003cp\u003eRoute 48 VDC digital input wiring through separate low-voltage instrument ducts, maintaining a minimum distance of 300 mm from high-voltage AC power conductors. Confirm correct field wetting voltage polarity and verify that terminal block screws are tightened to spec before applying system power.\u003c\/p\u003e","brand":"Emerson","offers":[{"title":"Default Title","offer_id":48394877501555,"sku":"1C31157G03","price":233.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/1C31199G032_Cocoai_906b40a9-3e19-412c-b4ae-11e3e2f63ea6.jpg?v=1790058970","url":"https:\/\/www.dcssupplier.com\/products\/emerson-1c31157g03-digital-input-modules","provider":"DcsSupplier Limited","version":"1.0","type":"link"}