{"product_id":"yokogawa-snt501-53-optical-esb-bus-repeater-slave-module-max-10km","title":"Yokogawa SNT501-53 Optical ESB Bus Repeater Slave Module | Max 10km","description":"\u003ch3\u003eGlobal PLC Spare HUB's Insight\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe \u003cb\u003e\u003cspan style=\"color: #0056b3;\"\u003eYokogawa SNT501-53\u003c\/span\u003e\u003c\/b\u003e serves as a critical bridge in safety-instrumented systems (SIS).\u003c\/li\u003e\n\u003cli\u003eIt maintains signal integrity over long distances by converting electrical ESB signals into light.\u003c\/li\u003e\n\u003cli\u003eThis module is essential for distributed architectures where safety nodes sit far from the main controller.\u003c\/li\u003e\n\u003cli\u003eIt ensures high-speed, deterministic communication required for SIL3 environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eBrand:\u003c\/b\u003e \u003cb\u003eYokogawa\u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eModel:\u003c\/b\u003e \u003cb\u003e\u003cspan style=\"color: #0056b3;\"\u003eSNT501-53\u003c\/span\u003e\u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSeries:\u003c\/b\u003e \u003cb\u003eProSafe-RS Safety Instrumented System\u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eModule Type:\u003c\/b\u003e \u003cb\u003eOptical ESB Bus Repeater Slave\u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTransmission Distance:\u003c\/b\u003e Maximum 5 km (Standard) or 10 km (Vnet\/IP R1.03+)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCurrent Consumption:\u003c\/b\u003e 0.5 A\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWeight:\u003c\/b\u003e Approximately 0.3 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTemperature Range:\u003c\/b\u003e -20 to 70°C (Dedicated for maintenance purposes)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eEnvironmental Tolerance:\u003c\/b\u003e \u003cb\u003eISA Standard G3\u003c\/b\u003e Conformal Coating\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInterference Resistance:\u003c\/b\u003e Superior EMI immunity via optical isolation\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eConnection Topology:\u003c\/b\u003e Supports both Star and Chain configurations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eConfiguration Breakdown\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003e\u003cspan style=\"color: #0056b3;\"\u003eSNT501\u003c\/span\u003e\u003c\/b\u003e Base Platform\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003e-5\u003c\/b\u003e Explosion Protection Features\n\u003cul\u003e\n\u003cli\u003eNo explosion protection provided\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e3\u003c\/b\u003e Environmental Performance Level\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eISA Standard G3\u003c\/b\u003e corrosion resistance\u003c\/li\u003e\n\u003cli\u003eExtended temperature range support\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation and Compatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eDevice Integration:\u003c\/b\u003e\n\u003cul\u003e\n\u003cli\u003eConnects to \u003cb\u003eSNT401\u003c\/b\u003e Master Module via fiber-optic cable.\u003c\/li\u003e\n\u003cli\u003eLinks to \u003cb\u003eS2EN501\u003c\/b\u003e N-ESB Bus Module in Vnet\/IP systems.\u003c\/li\u003e\n\u003cli\u003eInterfaces with \u003cb\u003eSSB401\u003c\/b\u003e on \u003cb\u003eSNB10D\u003c\/b\u003e safety node units.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eNetwork Layout:\u003c\/b\u003e\n\u003cul\u003e\n\u003cli\u003eSupports a maximum of two connecting stages.\u003c\/li\u003e\n\u003cli\u003eCompatible with diverse star and chain topologies.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTarget Equipment:\u003c\/b\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eYokogawa ProSafe-RS\u003c\/b\u003e Safety Control Units.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCentum VP\u003c\/b\u003e Integrated Control Systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eShipping and Warranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eProcessing Time:\u003c\/b\u003e Order dispatched within 24-48 hours.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLogistics Partners:\u003c\/b\u003e Reliable express shipping via \u003cb\u003eFedEx\u003c\/b\u003e, \u003cb\u003eUPS\u003c\/b\u003e, and \u003cb\u003eDHL\u003c\/b\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWarranty Period:\u003c\/b\u003e \u003cb\u003e12-month\u003c\/b\u003e comprehensive quality guarantee.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePackage Contents:\u003c\/b\u003e One \u003cb\u003e\u003cspan style=\"color: #0056b3;\"\u003eYokogawa SNT501-53\u003c\/span\u003e\u003c\/b\u003e module in secure packaging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical Application Scenarios\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eConnecting remote safety nodes in large-scale petrochemical facilities.\u003c\/li\u003e\n\u003cli\u003eExtending safety bus communication across offshore platform modules.\u003c\/li\u003e\n\u003cli\u003eIntegrating distributed I\/O in harsh corrosive industrial environments.\u003c\/li\u003e\n\u003cli\u003eEnsuring deterministic safety logic execution across long-distance networks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDiagnostic Capabilities\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eContinuous monitoring of optical signal strength across the ESB bus.\u003c\/li\u003e\n\u003cli\u003eInstant detection of link status failures between master and slave units.\u003c\/li\u003e\n\u003cli\u003eReal-time diagnostic feedback sent directly to the safety control station.\u003c\/li\u003e\n\u003cli\u003eMaintenance-focused temperature monitoring for extreme environmental conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGlobal PLC Spare HUB Review\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe \u003cb\u003e\u003cspan style=\"color: #0056b3;\"\u003eSNT501-53\u003c\/span\u003e\u003c\/b\u003e is a robust solution for safety system expansion.\u003c\/li\u003e\n\u003cli\u003eIts \u003cb\u003eISA G3\u003c\/b\u003e rating makes it perfect for highly corrosive atmospheres.\u003c\/li\u003e\n\u003cli\u003eEngineers value the module for its simple plug-and-play fiber connectivity.\u003c\/li\u003e\n\u003cli\u003eIt significantly reduces risks associated with electromagnetic interference in industrial sectors.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQ \u0026amp; Purchasing Guide\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cb\u003eQuestion: How do I choose between the SNT501 and S2EN501?\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003eAnswer: The \u003cb\u003e\u003cspan style=\"color: #0056b3;\"\u003eSNT501-53\u003c\/span\u003e\u003c\/b\u003e is specifically for ESB bus extension. Choose it when using \u003cb\u003eSSB401\u003c\/b\u003e interface modules in safety nodes.\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eQuestion: What fiber cable type is required for the 10km range?\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003eAnswer: Use high-quality single-mode or multi-mode fiber as specified in the manual. The distance depends on your Vnet\/IP revision.\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eQuestion: Can I use this module in non-safety applications?\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003eAnswer: It is designed for the \u003cb\u003eProSafe-RS\u003c\/b\u003e series. It follows strict safety protocols not found in standard DCS hardware.\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eQuestion: Is the G3 coating necessary for my installation?\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003eAnswer: The \u003cb\u003e-53\u003c\/b\u003e variant includes G3 coating. It is vital for sites with high humidity or chemical gases.\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eQuestion: How many slave modules can I link in a single chain?\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003eAnswer: You can connect a maximum of two stages in a chain layout. This maintains the required signal timing for safety compliance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/SNT501-53_EXAMPLE_OF_CONNECTION_STRUCTURE.png?v=1775547429\" alt=\"SNT501-53\" style=\"float: none;\"\u003e\u003c\/div\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":45014046245046,"sku":"SNT501-13","price":187.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/SNT501-53.jpg?v=1775549569","url":"https:\/\/www.plcsparehub.com\/products\/yokogawa-snt501-53-optical-esb-bus-repeater-slave-module-max-10km","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}