{"product_id":"yokogawa-snt501-53-s1-optical-esb-bus-repeater-module","title":"Yokogawa SNT501-53 S1 Optical ESB Bus Repeater Module","description":"\u003ch2\u003eYokogawa SNT501-53 S1 Optical ESB Bus Repeater Slave Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eYokogawa SNT501-53 S1\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eSNT501\u003c\/strong\u003e Network Interface Module, operates as a dedicated hardware component for ESB bus electrical-to-optical signal conversion within CENTUM VP, CS 3000, and ProSafe-RS platforms. Paired in a master-slave topology with the SNT401 master module, this slave repeater converts electrical Extended Serial Backplane signals into optical transmission paths across remote I\/O node units and N-IO nodes. The module executes deterministic data pass-through in star or chain network topologies while providing electrical isolation across extended field distances.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSuffix \/ Option Code\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eTechnical Specification \/ Configuration Details\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSNT501\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBase model designation for Optical ESB Bus Repeater Slave Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e5\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard layout designation with no explosion protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e3\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eISA Standard G3 conformal coating and extended maintenance temperature envelope (-20 to +70 deg C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eS1\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard option set denoting the specific hardware revision level and internal interface parameter set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\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\u003eSNT501-53 S1\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\u003e0.3 to 0.35 kg (Shipping Weight: 3.0 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e190 x 40 x 120 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 (maintenance purpose)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e5 V DC internal rack supply (Current Consumption: 0.5 A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eOptical ESB Bus Repeater Slave Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Distance\u003c\/td\u003e\n\u003ctd\u003eUp to 5 km per stage (Up to 10 km total with Vnet\/IP R1.03+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTopology \u0026amp; Cascading\u003c\/td\u003e\n\u003ctd\u003eStar or chain connection layout; maximum 2 stages\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDielectric Strength\u003c\/td\u003e\n\u003ctd\u003e1500 V AC for 1 minute\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulation Resistance\u003c\/td\u003e\n\u003ctd\u003eGreater than or equal to 100 Mohm at 500 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003eCENTUM VP, CS 3000, ProSafe-RS safety systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control \u0026amp; DCS Instrumentation Characteristics\u003c\/h3\u003e\n\u003cp\u003eOperating within DCS and Safety Instrumented System (SIS) network architectures, the unit converts high-speed electrical ESB backplane signals to optical pulses to eliminate ground loop current paths and suppress common-mode electrical interference across distant field locations. The slave repeater maintains synchronous bus timing across fiber-optic links connected to SNT401 master modules. Continuous internal self-diagnostics check signal attenuation and link status, while the ISA Standard G3 conformal coating prevents chemical corrosion on circuit traces when deployed in harsh process environments.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the maximum optical link distance achievable when cascading SNT501-53 S1 slave modules?\u003c\/p\u003e\n\u003cp\u003eA: A single transmission stage supports optical distances up to 5 km. When cascading modules in a two-stage chain or star topology under systems running Vnet\/IP R1.03 or later, the total maximum optical transmission distance extends up to 10 km.\u003c\/p\u003e\n\u003cp\u003eQ: How does the master-slave pairing function between the SNT401 and SNT501-53 S1 modules?\u003c\/p\u003e\n\u003cp\u003eA: The SNT401 resides at the primary controller or master node to convert backplane electrical ESB signals to optical signals. The SNT501-53 S1 sits at the remote node cage as a slave module, receiving the optical stream and converting it back to standard electrical ESB signals for the local I\/O module backplane.\u003c\/p\u003e\n\u003cp\u003eQ: What insulation and electrical isolation parameters protect the module from backplane transients?\u003c\/p\u003e\n\u003cp\u003eA: The module provides an insulation resistance of at least 100 Mohm at 500 VDC and a dielectric strength rating of 1500 V AC for 1 minute. This electrical isolation prevents field voltage surges from propagating through the backplane to adjacent modules or remote host controllers.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eSeat the SNT501-53 S1 module firmly into its designated slot within the FIO or safety rack cage, ensuring the backplane connector locks completely into position.\u003c\/li\u003e\n\u003cli\u003eClean all fiber-optic cable connectors using lint-free optical wipes and isopropyl alcohol prior to mating with the optical transceiver ports on the front panel.\u003c\/li\u003e\n\u003cli\u003eObserve specified minimum fiber bend radius guidelines during cable management to avoid optical attenuation, signal degradation, or glass fiber breakage.\u003c\/li\u003e\n\u003cli\u003eVerify proper grounding by ensuring the rack chassis connects to a dedicated single-point instrument earth ground with a resistance of less than 10 ohms.\u003c\/li\u003e\n\u003cli\u003eMaintain unobstructed airflow through cabinet cooling channels to ensure thermal dissipation keeps ambient operating conditions within the specified -20 to +70 deg C maintenance range.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43846459031642,"sku":"SNT501-53 S1","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/388_979bc65f-01f4-4c94-ac24-ddb4c8e36752.jpg?v=1786693574","url":"https:\/\/www.spareoil.com\/products\/yokogawa-snt501-53-s1-optical-esb-bus-repeater-module","provider":"SpareOil Automation","version":"1.0","type":"link"}