{"product_id":"ssc50d-s2121-s1-yokogawa-duplexed-safety-control-unit","title":"SSC50D-S2121 S1 YOKOGAWA Duplexed Safety Control Unit","description":"\u003ch2\u003eYOKOGAWA SSC50D-S2121 S1 Duplexed Safety Control Unit\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eYOKOGAWA SSC50D-S2121 S1\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eSSC50D\u003c\/strong\u003e Duplexed Safety Control Unit, operates as a dedicated hardware component for high-integrity safety logic execution and subsystem communication within ProSafe-RS Safety Instrumented System (SIS) platforms. Driven by dual-redundant MIPS R5000 processors, the unit processes SIL3-compliant logic solving and executes 2oo3 fail-safe decision algorithms across redundant Vnet\/IP network channels.\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\u003eBase Model\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSuffix Code\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eHardware Configuration\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSSC50D\u003c\/td\u003e\n\u003ctd\u003e-S\u003c\/td\u003e\n\u003ctd\u003eSingle \/ Duplexed Safety Control Unit Base\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSSC50D\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003e100-120 VAC \/ 220-240 VAC or 24 VDC Power Supply Selection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSSC50D\u003c\/td\u003e\n\u003ctd\u003e121 S1\u003c\/td\u003e\n\u003ctd\u003eRevision 1 Hardware Specification for ProSafe-RS Integrated Control Node\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\u003eSSC50D-S2121 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\u003e8.5 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e482.6 mm x 88.1 mm x 266 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 55 deg C (fan-assisted \u0026gt;40 deg C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e100-120 VAC (200 VA), 220-240 VAC (230 VA), or 24 VDC (5.5 A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcessor\u003c\/td\u003e\n\u003ctd\u003eDual-redundant MIPS R5000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory\u003c\/td\u003e\n\u003ctd\u003e32 MB Main Memory, Flash Memory, NVRAM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Certification\u003c\/td\u003e\n\u003ctd\u003eSIL3 (IEC 61508 \/ IEC 61511 compliant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Ports\u003c\/td\u003e\n\u003ctd\u003eDual Vnet\/IP, 100BASE-TX (RJ45, CAT5e+), ESB bus interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSubsystem Input Points\u003c\/td\u003e\n\u003ctd\u003e50 digital inputs (24 VDC \/ 12 VDC \/ 5 VDC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003e500 Vrms (input to ground)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eStandard 19-inch rack mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eHigh-Reliability Safety Control \u0026amp; Galvanic Isolation\u003c\/h3\u003e\n\u003cp\u003eThe safety control unit utilizes dual-redundant CPUs operating in parallel with active self-checking diagnostic routines to enforce a fail-safe state during hardware faults. Galvanic isolation up to 500 Vrms between the input signals and the internal processing bus guards against field transients and differential ground potential spikes. The integrated Vnet\/IP interface maintains deterministic, low-latency transmission of critical safety trip commands, preventing signal jitter across distributed safety node topologies.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the module support hot-swapping under active process operation?\u003c\/p\u003e\n\u003cp\u003eA: Yes, both the redundant CPU and power supply modules within the SSC50D control chassis support online hot-swap operations without interrupting safety logic execution or bringing down the ProSafe-RS node.\u003c\/p\u003e\n\u003cp\u003eQ: What network infrastructure is required for the primary control bus?\u003c\/p\u003e\n\u003cp\u003eA: The unit connects via 100BASE-TX full-duplex Ethernet over UTP CAT5e+ cables to Layer 2 switches, maintaining redundant Vnet\/IP communications up to a maximum distance of 100 meters per segment.\u003c\/p\u003e\n\u003cp\u003eQ: How many I\/O modules and safety node units can a single control unit manage?\u003c\/p\u003e\n\u003cp\u003eA: The SSC50D host supports up to 8 direct-attached I\/O modules per control unit chassis and scales up to 9 Safety Node Units (SNUs) for a maximum of 78 I\/O modules per Safety Control Station (SCS).\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eMount the unit in a standard 19-inch instrument rack, ensuring adequate structural support for its 8.5 kg mass. Fasten all four front flange screws securely to the rack frame to guarantee physical stability and continuous chassis earth grounding.\u003c\/p\u003e\n\u003cp\u003eMaintain a minimum clearance of 100 mm above and below the chassis for unimpeded convective airflow, and verify fan assembly operation if ambient enclosure temperatures exceed 40 deg C. Route dual Vnet\/IP communication cables through separate wiring channels, keeping a minimum distance of 300 mm from high-voltage AC lines and motor control circuits. Ground all communication shielding at a single point on the main system ground bar to prevent ground loops.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43873159905370,"sku":"SSC50D-S2121 S1","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/364_e4b3eb2c-438f-4f3e-94f3-e54dff352d4b.jpg?v=1787190422","url":"https:\/\/www.spareoil.com\/products\/ssc50d-s2121-s1-yokogawa-duplexed-safety-control-unit","provider":"SpareOil Automation","version":"1.0","type":"link"}