YOKOGAWA SNT401-13 – Bus Repeater Slave Module | CENTUM CS/VP DCS Platform
Engineering Background
The YOKOGAWA SNT401-13 is a Bus Repeater Slave Module engineered for the CENTUM CS and CENTUM VP Distributed Control System (DCS) platforms. Designed to extend and regenerate field bus signals across large-scale process control architectures, this module ensures reliable data transmission between the control station and remote I/O nodes in demanding industrial environments.
Product Positioning
The SNT401-13 is the preferred choice for process engineers and system integrators who require deterministic bus communication over extended cable runs. It is fully compatible with YOKOGAWA’s CENTUM CS/VP ecosystem and is commonly deployed in oil & gas, petrochemical, power generation, and chemical processing facilities where signal integrity is non-negotiable.
Complete Technical Specifications
| Part Number / SKU | SNT401-13 |
| Manufacturer | YOKOGAWA Electric Corporation |
| Module Type | Bus Repeater Slave Module |
| Compatible Platform | CENTUM CS / CENTUM VP DCS |
| Function | Field bus signal regeneration and extension |
| Communication Protocol | YOKOGAWA proprietary V-net / ER bus |
| Module Form Factor | Rack-mount, DIN-rail compatible |
| Operating Temperature | 0°C to +60°C |
| Storage Temperature | -20°C to +70°C |
| Humidity | 5% to 95% RH (non-condensing) |
| Power Supply | Supplied via backplane bus |
| Weight | Approx. 1,380 g |
| Country of Origin | Japan |
| Condition | New / Refurbished / Tested Available |
Proven Application Environments
- Oil & Gas: Upstream/downstream DCS bus extension across large control rooms and remote marshalling cabinets
- Petrochemical Plants: Reliable bus repeating in high-EMI environments with long cable runs
- Power Generation: Integration into CENTUM VP-based turbine and boiler control systems
- Chemical Processing: Continuous process control with redundant bus architectures
- Pulp & Paper / Water Treatment: Multi-node DCS topologies requiring signal regeneration
Engineering Advantages
- Extends field bus reach without signal degradation, supporting larger plant footprints
- Seamless integration into existing CENTUM CS/VP control station racks
- Maintains deterministic communication timing critical for real-time process control
- Robust design rated for continuous 24/7 industrial operation
- Reduces wiring complexity by enabling distributed I/O over a single bus segment
- Hot-swap capable within CENTUM VP redundant configurations (verify with system engineer)
System Architecture & Signal Flow
The SNT401-13 operates as a slave node on the YOKOGAWA V-net/ER field bus. It receives bus signals from the upstream control station or master repeater, regenerates the signal to full amplitude and timing accuracy, and retransmits to downstream I/O modules or additional repeater segments. This architecture supports star, daisy-chain, and hybrid bus topologies common in large CENTUM CS/VP installations.
Recommended: Consult YOKOGAWA system documentation (IM 33S01B30-01EN) for maximum segment lengths and repeater cascade limits.
Sourcing & Quality Verification
- All units sourced from authorized distributors, decommissioned plant upgrades, or OEM-certified channels
- Each module undergoes visual inspection, functional bench test, and firmware version verification prior to shipment
- Serialized traceability records available upon request for regulated industries
- Packaging: anti-static ESD bag + foam-lined export carton, compliant with IEC 61340-5-1
- Certificate of Conformance (CoC) and test report available for qualified orders
Procurement Process
- Submit RFQ: Contact [email protected] or call +0086 19859288691 with your required quantity and delivery timeline
- Quotation: Receive a formal quotation within 1 business day including unit price, lead time, and shipping options
- Order Confirmation: Purchase order accepted via email; proforma invoice issued for prepayment or NET terms (qualified accounts)
- Quality Check & Dispatch: Module tested, documented, and dispatched with tracking via DHL / FedEx / SF Express
- After-Sales Support: 90-day warranty on tested units; technical support available from our automation engineering team
Technical FAQ
Q: Is the SNT401-13 compatible with both CENTUM CS and CENTUM VP?
A: Yes. The SNT401-13 is designed for the CENTUM CS series and is backward-compatible with CENTUM VP systems sharing the same V-net/ER bus architecture. Confirm compatibility with your specific system revision before installation.
Q: Can this module be used in a redundant bus configuration?
A: The SNT401-13 supports redundant bus topologies when paired with appropriate CENTUM VP redundancy hardware. Consult your YOKOGAWA system engineer for validated redundancy configurations.
Q: What is the maximum number of repeater cascades allowed?
A: Refer to YOKOGAWA technical manual IM 33S01B30-01EN for segment and cascade specifications. Konmask’s engineering team can assist with topology planning.
Q: Do you provide firmware version verification?
A: Yes. Firmware version is checked and documented as part of our pre-shipment quality process. Specific firmware version requirements can be accommodated upon request.
Q: What are the lead times?
A: In-stock units ship within 3–5 business days. For sourced units, typical lead time is 2–4 weeks. Contact us for current stock status.
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Contact: [email protected] | +0086 19859288691
