YOKOGAWA SNT401-53 – Bus Repeater Module | CENTUM CS/VP DCS Platform
The YOKOGAWA SNT401-53 is a dedicated bus repeater module engineered for CENTUM CS and CENTUM VP Distributed Control System (DCS) architectures. Designed to extend and regenerate V-net or ESB (Enhanced Serial Bus) communication signals across large-scale process control networks, this module is a critical infrastructure component for refineries, chemical plants, power generation facilities, and other continuous-process industries where signal integrity over distance is non-negotiable.
Product Positioning: The SNT401-53 serves as the backbone of long-distance DCS bus communication, enabling engineers to expand field station reach without compromising data throughput or real-time control response. It is fully compatible with YOKOGAWA’s CENTUM CS 1000/3000 and CENTUM VP controller families, making it an essential spare and upgrade component for existing DCS installations worldwide.
Complete Technical Specifications
- Manufacturer: YOKOGAWA Electric Corporation
- Part Number / SKU: SNT401-53
- Module Type: Bus Repeater Module
- Compatible Platform: CENTUM CS 1000, CENTUM CS 3000, CENTUM VP
- Bus Type: V-net / ESB (Enhanced Serial Bus)
- Function: Signal regeneration and bus extension for DCS field networks
- Mounting: DIN rail / rack-mount (per CENTUM standard enclosure)
- Weight: 1,380 g (as shipped)
- Operating Temperature: 0°C to 55°C (standard industrial range)
- Storage Temperature: -20°C to 70°C
- Power Supply: Supplied via CENTUM system bus backplane
- Compliance: CE, RoHS; meets IEC 61511 functional safety guidelines
- Country of Origin: Japan
Proven Application Environments
- Oil & Gas refineries and upstream processing facilities
- Petrochemical and specialty chemical plants
- Power generation (thermal, nuclear, combined-cycle)
- Pulp & paper and continuous manufacturing lines
- Water treatment and municipal utility SCADA/DCS networks
- Pharmaceutical batch and continuous process control
Engineering Advantages
- Signal Integrity: Full bus signal regeneration eliminates attenuation over extended cable runs, maintaining deterministic communication latency.
- Seamless Integration: Drop-in compatible with existing CENTUM CS/VP field control stations (FCS) — no firmware changes required.
- Hot-Standby Ready: Supports redundant bus topologies for continuous availability in safety-critical loops.
- Compact Form Factor: Optimized for high-density marshalling cabinets with minimal footprint.
- Long Service Life: Built to YOKOGAWA’s industrial-grade component standards with extended MTBF ratings.
System Architecture & Signal Flow
In a CENTUM DCS network, the SNT401-53 is installed between the Human Interface Station (HIS) or Engineering Workstation (EWS) and remote Field Control Stations (FCS). The module receives degraded V-net/ESB bus signals, performs full electrical regeneration, and retransmits at nominal signal levels — effectively doubling or extending the maximum bus segment length. This architecture supports star, daisy-chain, and redundant ring topologies as defined in YOKOGAWA’s CENTUM system engineering guidelines.
Sourcing & Quality Verification
- Origin: Genuine YOKOGAWA OEM hardware — not aftermarket or refurbished unless explicitly stated.
- Inspection: Each unit undergoes visual inspection, label verification, and functional pre-shipment checks.
- Traceability: Serial number and date code documented for full supply chain traceability.
- Packaging: Anti-static ESD packaging with moisture barrier; double-boxed for international freight.
- Warranty: 12-month replacement warranty against manufacturing defects.
Procurement Process
- Confirm Compatibility: Verify your CENTUM platform version (CS 1000 / CS 3000 / VP) and bus type (V-net or ESB) against your existing FCS configuration.
- Request Quote: Contact support@konmask.com or call +0086 19859288691 for volume pricing, lead time, and export documentation.
- Place Order: Add to cart and complete checkout, or submit a purchase order via email for NET terms.
- Shipping: DHL / FedEx international express available; EXW Xiamen or CIF destination port options.
- Documentation: Commercial invoice, packing list, COO certificate, and test report provided upon request.
Technical FAQ
Q: Is the SNT401-53 compatible with CENTUM VP R6.x firmware?
A: Yes. The SNT401-53 is a hardware bus repeater and is firmware-agnostic; it is compatible with all CENTUM VP revisions including R4, R5, and R6.
Q: Can this module be used in a redundant bus configuration?
A: Yes. YOKOGAWA’s CENTUM architecture supports dual-redundant V-net/ESB buses. Two SNT401-53 units can be deployed in parallel for fully redundant signal extension.
Q: What is the maximum bus extension distance with this repeater?
A: Per YOKOGAWA engineering specifications, each SNT401-53 repeater extends the bus segment by up to the standard maximum segment length defined for V-net (typically 100m per segment). Consult your CENTUM system engineering manual for exact topology limits.
Q: Do you provide YOKOGAWA factory test certificates?
A: Factory test reports and calibration certificates can be requested at time of order. Availability depends on unit provenance (new vs. surplus stock).
Q: What is the lead time for in-stock units?
A: In-stock units ship within 1–3 business days. Contact us to confirm current inventory status before placing a time-critical order.
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Contact: support@konmask.com | +0086 19859288691
