{"product_id":"yokogawa-snt401-13-prosafe-rs-optical-esb-bus-repeater-master-module","title":"Yokogawa SNT401-13 ProSafe-RS Optical ESB Bus Repeater Master Module","description":"\u003ch2\u003eYokogawa SNT401-13 Optical ESB Bus Repeater Master Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for optical transport of ESB Bus signals in ProSafe-RS Safety Instrumented System and CENTUM VP\/CS 3000 networks, the \u003cstrong\u003eYokogawa SNT401-13\u003c\/strong\u003e (\u003cstrong\u003eYokogawa SNT401\u003c\/strong\u003e Optical ESB Bus Repeater Master Module) provides direct physical\/electrical execution. The module converts electrical copper-based communication backplane signals into optical media formats to facilitate long-distance serialization without electromagnetic interference degradation. It establishes deterministic master-to-slave distribution links when mated to corresponding field receiving nodes across remote I\/O topologies.\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\u003eSNT401-13\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\u003ePlatform\u003c\/td\u003e\n\u003ctd\u003eProSafe-RS Safety Instrumented System \/ CENTUM VP \/ CENTUM CS 3000\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\u003e0.3 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e22 x 124 x 126 mm\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\u003e0.5 A current consumption (supplied via base unit backplane)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNetwork Topologies\u003c\/td\u003e\n\u003ctd\u003eStar or chain configurations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Connection Stages\u003c\/td\u003e\n\u003ctd\u003e2 stages\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Distance Limit\u003c\/td\u003e\n\u003ctd\u003eUp to 5 km per single stage (10 km maximum across dual stages with Vnet\/IP R1.03+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Compliance\u003c\/td\u003e\n\u003ctd\u003eISA G3 corrosion resistance (suffix -3 qualified hardware)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Installation\u003c\/td\u003e\n\u003ctd\u003eSNT10D unit rack enclosure slot matrix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlot Assignment Configuration\u003c\/td\u003e\n\u003ctd\u003eOdd slots allocated for Bus 1; even slots allocated for Bus 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMating Peripheral Interface\u003c\/td\u003e\n\u003ctd\u003eSNT501 Slave Module or S2EN501 N-ESB Bus Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control Loops and DCS Instrument Integration\u003c\/h3\u003e\n\u003cp\u003eThe optical master module processes high-speed backplane signals to maintain synchronous data exchange over extended distances for 4-20 mA HART loop protocol clusters connected to remote node segments. Galvanic isolation and complete optical decoupling protect the core control rack against ground potential differentials that develop over multi-kilometer runs between processing cells. By providing total immunity to high-voltage transients within the serial stream, the unit stabilizes data frame integrity across distributed junction environments and prevents channel-to-channel isolation faults inside remote termination sections.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How must the master module be arranged to support a fully redundant duplex bus architecture?\u003c\/p\u003e\n\u003cp\u003eA: Duplex configuration requires installing separate modules into the designated slot matrix of the SNT10D rack, assigning the primary module to an odd-numbered slot for Bus 1 and the redundant backup module to an even-numbered slot for Bus 2.\u003c\/p\u003e\n\u003cp\u003eQ: Can the optical interface parameters change when updating the software platform to Vnet\/IP?\u003c\/p\u003e\n\u003cp\u003eA: The physical optical drive mechanism remains constant, but upgrading to Vnet\/IP R1.03+ enabling logic allows the hardware matrix to extend maximum end-to-end chain transmission limits to 10 km over two connection stages.\u003c\/p\u003e\n\u003cp\u003eQ: Does this module require standalone external thermal cooling mechanisms when fully loaded?\u003c\/p\u003e\n\u003cp\u003eA: No. The internal circuitry uses efficient thermal dissipation pathways designed to operate using natural convection cooling profiles within standard industrial control enclosures up to +70 deg C.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptical Fiber Bend Radius Maintenance:\u003c\/strong\u003e Maintain the minimum recommended bend radius constraints for the fiber optic patch cables inside the marshalling cabinet to prevent attenuation loss and signal distortion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSlot Allocation Adherence:\u003c\/strong\u003e Verify the physical slot number before inserting the module into the SNT10D unit rack to prevent overlapping Bus 1 and Bus 2 logic configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDust Cap Conservation:\u003c\/strong\u003e Keep protective optical dust caps installed on all unused transceiver fiber ports at all times to avoid airborne particulate contamination on the internal optical lenses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCabinet Earthing Integration:\u003c\/strong\u003e Connect the SNT10D unit rack chassis directly to the master instrumentation earth terminal network using a low-impedance conductor to minimize stray common-mode noise.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43683713679450,"sku":"SNT401-13","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/626.1.jpg?v=1784597352","url":"https:\/\/www.spareoil.com\/products\/yokogawa-snt401-13-prosafe-rs-optical-esb-bus-repeater-master-module","provider":"SpareOil Automation","version":"1.0","type":"link"}