{"product_id":"yokogawa-sif2-a-centum-vp-safety-instrumented-function-module","title":"YOKOGAWA SIF2*A CENTUM VP Safety Instrumented Function Module","description":"\u003ch2\u003eYOKOGAWA SIF2*A Interface Module Card\u003c\/h2\u003e\n\u003cp\u003eConfigured for safety-critical logic execution in CENTUM VP and CS DCS platforms, the \u003cstrong\u003eYOKOGAWA SIF2*A\u003c\/strong\u003e (\u003cstrong\u003eSIF2A\u003c\/strong\u003e Safety Instrumented Function Module) provides direct physical\/electrical execution of emergency shutdown and interlock functions.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSIF2\u003c\/strong\u003e: Base model identifier for Safety Instrumented Function (SIF) execution and logic processing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e*A\u003c\/strong\u003e: Hardware revision and interface designation indicating compatibility with standard Yokogawa safety bus structures and I\/O integration protocols.\u003c\/li\u003e\n\u003c\/ul\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\u003eSIF2*A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eYOKOGAWA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.25 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e25 × 130 × 146 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-10 deg C to +55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e24 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Rating\u003c\/td\u003e\n\u003ctd\u003eIEC 61508 SIL2\/SIL3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRedundancy\u003c\/td\u003e\n\u003ctd\u003eDual-redundant supported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiagnostics\u003c\/td\u003e\n\u003ctd\u003eContinuous self-monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eSafety Instrumented System (SIS) Performance\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eSIF2*A\u003c\/strong\u003e executes protective logic to maintain hazardous processes within defined safe operating envelopes. To satisfy IEC 61508 requirements, the module utilizes a triple modular redundancy (TMR) 2oo3 architecture (where applicable in system configuration) to perform fail-safe state execution upon detection of a logic deviation or sensor fault. Each signal path incorporates galvanic isolation to decouple the safety processor from field-induced transients, ensuring that external ground faults do not compromise the safety integrity level. Proactive self-diagnostics continuously scan internal circuitry, ensuring that any single-point failure triggers an immediate, deterministic transition to the predefined fail-safe state.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the SIF2*A module be hot-swapped during active safety monitoring?\u003c\/p\u003e\n\u003cp\u003eA: Module replacement must strictly follow the site-specific safety instrumented system shutdown procedure. Always confirm the redundant partner module is in a healthy, active state before attempting physical module extraction.\u003c\/p\u003e\n\u003cp\u003eQ: How does the module handle communication loss with the DCS platform?\u003c\/p\u003e\n\u003cp\u003eA: The module maintains its local safety logic independently of the DCS network. If communication with the DCS is lost, the module continues to execute its programmed safety interlocks based on real-time field inputs.\u003c\/p\u003e\n\u003cp\u003eQ: What is the reset procedure after a fail-safe shutdown?\u003c\/p\u003e\n\u003cp\u003eA: Resetting a tripped safety function requires physical confirmation of the field condition and a software-defined permissive signal initiated through the engineering station once diagnostic checks confirm fault clearance.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting\u003c\/strong\u003e: Secure the module into the safety-rated cabinet rack. Tighten the retaining screws to ensure proper electrical bonding between the module chassis and the cabinet grounding bus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring\u003c\/strong\u003e: Utilize shielded instrumentation cable for all safety-critical inputs. Terminate the shield at the cabinet ground rail to minimize electromagnetic interference that could affect signal integrity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIsolation\u003c\/strong\u003e: Maintain a clear separation of at least 150 mm between safety signal conductors and non-safety-rated control wiring to prevent crosstalk and signal contamination.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValidation\u003c\/strong\u003e: Post-installation, perform a full functional loop test to verify that the programmed logic correctly executes the intended shutdown and interlock sequences.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43649105789018,"sku":"SIF2*A","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/519._626616d8-d7fc-46a5-91c4-4c3161d7c3eb.jpg?v=1783912026","url":"https:\/\/www.spareoil.com\/products\/yokogawa-sif2-a-centum-vp-safety-instrumented-function-module","provider":"SpareOil Automation","version":"1.0","type":"link"}