Features:
- Extended Optical Distance Linkage (Up to 10 km)
- ISA G3 Certified Harsh Environment Conformance
- Fault-Tolerant Hot-Swapping & Duplex Redundancy
The YOKOGAWA SNT401-13 breaks through localized geographic restraints by pushing standard safety ESB bus copper limits up to a total 5 km transmission distance over single-mode/multimodal fiber links, which dynamically expands up to 10 km when embedded into modern Vnet/IP system frameworks running Revision 1.03 or newer.
Unlike standard industrial modules, the YOKOGAWA SNT401-13 features a meticulous chemical-resistant conformal coating that meets ISA Standard G3 protocols, providing flawless dielectric insulation and barrier shield protection against airborne corrosive elements across a broadened operational thermal spectrum of -20°C to 70°C.
Engineered for non-stop uptime in dangerous industrial spaces, the YOKOGAWA SNT401-13 natively accommodates dual-redundant bus architectures on continuous odd/even rack slots, ensuring zero process interruptions and total safety maintenance through online hot-swapping parameters during a master bus rollover.
The SNT401-13 YOKOGAWA Optical ESB Bus Repeater Master Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
YOKOGAWA SNT401-13 Optical ESB Bus Repeater Master Module Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
YOKOGAWA SNT401-13 Optical ESB Bus Repeater Master Module
General
- Manufacturer YOKOGAWA
- Model SNT401-13
- Condition New Original ready stock
- Product Family SNT401-53,SNT501-13,SNT401-E3
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- Offshore Oil & Gas Platforms: The YOKOGAWA SNT401-13 is heavily deployed on offshore platforms where the distance between remote wellhead platforms and the main living quarter control room spans miles of fiber optics, safely running emergency shutdown (ESD) networks across deep water lines.
- Corrosive Petrochemical Plants: With its specialized G3 coating, the module is ideal for sulfur recovery units, ethylene plants, and fertilizer facilities where airborne H₂S and SOₓ gases would otherwise rapidly corrode standard electrical copper connections.
- Vast Scale Oil Refineries: Enables the centralized consolidation of control rooms by safely aggregating remote tank farm I/O data over a 5km–10km optical loop back to the primary ProSafe-RS Safety Control Stations without experiencing electromagnetic interference from heavy high-voltage switchgear.
- Thermal Power Generation Stations: Functions in critical boiler protection and Burner Management Systems (BMS), carrying safety-critical block interlock commands safely across high-temperature turbine environments without signal degradation.
- Zero-Latency Protocol Conversions: The proprietary internal ASIC chip of the YOKOGAWA SNT401-13 guarantees near-zero propagation delay when converting electrical ESB frames to light waves, which is vital for high-speed emergency trip executions.
- Optimized Power Footprint: Drawing a modest 0.5 A at nominal system voltage, it lowers the overall thermal loading within sealed, unventilated marshalling panels, expanding the operational lifespan of neighboring safety relays.
- Flexible Network Layout Scaling: Natively adapts to complex hybrid architectures, allowing EPC projects to seamlessly mix Star and Chain physical topologies to minimize total fiber-optic trenching and installation expenditures.
- High-Speed Diagnostic Sync: Operates with high internal baud-rate efficiencies to ensure that real-time line metrics are refreshed at millisecond intervals on the asset management system, allowing operators to preemptively catch fiber bend degradation.
- SIL3 Certified Architectural Integrity: Built as an organic component of the ProSafe-RS safety loop, the YOKOGAWA SNT401-13 conforms completely to IEC 61508/IEC 61511 safety standards, maintaining low probability of failure on demand (PFD) values.
- Galvanic Optical Isolation Barriers: By replacing metallic paths with fiber optics, the module acts as a total physical isolation barrier, preventing high-voltage lightning surges or ground-loop potentials from traveling back to damage central CPU nodes.
- Strict Conformal Protection Standards: Certified under the international ISA-71.04 Class G3 (Harsh) environment classification, ensuring the internal copper circuits are completely sealed against humidity-induced silver whiskering and chemical creeping.
- Redundant Suffix Standardization: Adheres to Yokogawa's strict dual-redundant pairing policies, requiring matching hardware suffixes to eliminate unexpected behavior during safety bus transfers.