DCS Field Bus Coupler Solution – Yokogawa EC401-10 S2 | ESB Series
Where This Product Is Used
The Yokogawa EC401-10 S2 ESB Bus Coupler Module is deployed in mission-critical distributed control system (DCS) architectures across a wide range of process industries. Engineers specify this module wherever reliable, high-speed communication between field control stations (FCS) and I/O subsystems is required:
- Oil & Gas Refineries – Coupling remote I/O nodes to the main FCS in hazardous-area installations
- Chemical & Petrochemical Plants – Maintaining deterministic bus communication in continuous-process environments
- Power Generation – Integrating turbine and boiler I/O racks via ESB backbone in CENTUM VP systems
- Pulp & Paper Mills – Extending ESB segments across large plant footprints with minimal latency
- Pharmaceutical Manufacturing – Supporting validated DCS architectures requiring traceable, certified hardware
- Water & Wastewater Treatment – Providing robust bus coupling in outdoor and harsh-environment control panels
Technical Specifications
| Part Number | EC401-10 S2 |
| Manufacturer | Yokogawa Electric Corporation |
| Series | ESB (Enhanced Serial Backplane) Bus Coupler |
| Compatible Systems | CENTUM VP, CENTUM CS 3000 |
| Function | ESB Bus Coupler – connects FCS to remote I/O units via ESB bus |
| Bus Type | ESB (Enhanced Serial Backplane) Bus |
| Mounting | DIN rail / Node unit rack mount |
| Weight | 420 g |
| Condition | New / Refurbished / Tested available – specify on inquiry |
Why Engineers Specify This Model
- Deterministic Communication – ESB bus architecture guarantees cycle-time consistency critical for process control loops
- Hot-Standby Redundancy Support – Compatible with redundant FCS configurations for zero-downtime operation
- Plug-and-Play Integration – Direct replacement for existing EC401-series couplers with no firmware changes required
- Proven Field Reliability – Widely deployed in Tier-1 refineries and chemical plants globally since CENTUM CS 3000 era
- Long Product Lifecycle – Yokogawa’s commitment to backward compatibility protects capital investment in legacy DCS infrastructure
Complete System Bill of Materials
The EC401-10 S2 is typically ordered alongside the following components for a complete ESB node build-out:
- Yokogawa AFV10D / AFV30D – Field Control Station (FCS)
- Yokogawa EB401 / EB501 – ESB Bus Interface Unit
- Yokogawa ANB10D – Node Unit for remote I/O
- Yokogawa AAI141 / AAI841 – Analog I/O Modules
- Yokogawa ADV151 / ADV161 – Digital I/O Modules
- ESB Bus Cable (shielded, Yokogawa-specified)
- Redundant Power Supply Unit (PSU) for node rack
Contact support@konmask.com for a complete BOM quotation.
Compliance & Industry Standards
- Designed and manufactured under ISO 9001 quality management system
- Compliant with IEC 61511 (Functional Safety – Process Industry) when integrated in certified FCS configurations
- CE Marked for European market deployment
- Compatible with NAMUR NE 107 device status signaling conventions
- RoHS compliant (confirm revision with Yokogawa for specific hardware revision)
Quality Assurance & Sourcing
Every EC401-10 S2 unit shipped by Konmask.com undergoes the following verification process:
- Visual inspection for physical damage, corrosion, and counterfeit indicators
- Firmware / label revision verification against Yokogawa documentation
- Functional power-on test where applicable
- Secure anti-static packaging with humidity indicator card
- Full traceability documentation available on request
We source directly from authorized distributors, decommissioned plant inventories, and certified secondary-market channels. All units are sold with a 90-day replacement warranty.
How to Source This Part
- Click Add to Cart or submit a Request for Quote (RFQ) via the product page
- Specify required quantity, condition preference (new / refurbished), and delivery timeline
- Our engineering team will confirm availability, lead time, and pricing within 24 business hours
- Payment via T/T bank transfer, PayPal, or credit card – export documentation (CO, packing list, commercial invoice) included
For urgent requirements or large-volume orders, contact us directly:
📧 support@konmask.com | 📞 +0086 19859288691
Application-Specific FAQ
Q: Is the EC401-10 S2 compatible with CENTUM VP R6.x?
A: Yes. The EC401-10 S2 is backward compatible with CENTUM VP R4 through R6 and CENTUM CS 3000 R3. Verify your FCS firmware revision with Yokogawa engineering for edge cases.
Q: Can this module be used in a redundant ESB bus configuration?
A: Yes. The EC401-10 S2 supports dual-bus redundancy when paired with a redundant FCS and appropriate ESB cabling topology.
Q: What is the maximum ESB bus segment length?
A: Per Yokogawa specifications, the ESB bus supports up to 100 m per segment using specified shielded cable. Consult the CENTUM VP Engineering Guide for topology constraints.
Q: Do you provide installation or commissioning support?
A: Konmask.com specializes in hardware supply. For on-site commissioning, we can refer you to certified Yokogawa system integrators in your region.
Q: What documentation is included with the shipment?
A: Commercial invoice, packing list, certificate of origin (on request), and hardware revision datasheet. ATEX/SIL certificates available for applicable hardware revisions.
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Contact: support@konmask.com | +0086 19859288691
