Yokogawa ANB10D-427 S2 ESB Bus Node Unit | Replacement, Equivalent & Selection Guide
The Yokogawa ANB10D-427 S2 is an ESB (Extended Serial Backplane) Bus Node Unit designed for use within Yokogawa CENTUM CS and CENTUM VP distributed control system (DCS) architectures. It serves as the critical communication bridge between the ESB highway and field control station (FCS) I/O modules, enabling deterministic, high-speed data exchange across the control network. Procurement engineers sourcing this unit will find complete specifications, verified replacement options, and a structured selection guide below.
Technical Specifications
| Model | ANB10D-427 S2 |
| Manufacturer | Yokogawa Electric Corporation |
| Series / Platform | CENTUM CS / CENTUM VP |
| Function | ESB Bus Node Unit — bridges ESB highway to FCS I/O nest |
| Bus Type | ESB (Extended Serial Backplane) Highway |
| Communication Protocol | Yokogawa proprietary ESB protocol |
| Suffix / Revision | S2 (second hardware revision) |
| Mounting | DIN-rail / nest-slot installation within FCS cabinet |
| Power Supply | Supplied via backplane (nest power bus) |
| Operating Temperature | 0 °C to +55 °C |
| Storage Temperature | −20 °C to +60 °C |
| Humidity | 5 % to 95 % RH (non-condensing) |
| Weight | Approx. 300 g |
| Certifications | CE, UL (per CENTUM system certification) |
| RoHS Compliance | Yes |
Compatible Replacement & Equivalent Models
When the ANB10D-427 S2 is discontinued, end-of-life, or unavailable, the following models may serve as functional equivalents depending on system revision and nest configuration. Always verify hardware suffix compatibility with your CENTUM system engineering documentation before substitution.
| Model | Suffix | Compatibility Notes |
|---|---|---|
| ANB10D-427 | S1 | Earlier hardware revision; functionally equivalent in most CENTUM CS nests — verify firmware baseline |
| ANB10D-421 | S1 / S2 | Alternate part number within ANB10D family; confirm nest slot assignment and ESB address settings |
| ANB10D-427 | S3 (if released) | Later revision; backward-compatible in CENTUM VP environments |
| ANB11D series | — | Next-generation ESB node for CENTUM VP R6+; requires nest and firmware upgrade |
Note: Konmask.com supplies both new-surplus and refurbished units. All units undergo functional verification prior to dispatch.
Why Choose the Original ANB10D-427 S2
- Exact hardware revision match — eliminates firmware incompatibility risk in legacy CENTUM CS installations.
- Validated ESB address mapping — S2 revision incorporates hardware fixes addressing ESB timeout faults present in S1 units under high I/O load.
- Drop-in replacement — no re-engineering of nest wiring or FCS configuration required.
- Long-term sparing — critical for plants operating CENTUM CS systems beyond OEM support lifecycle.
- Reduced commissioning risk — original part number accepted by Yokogawa CENTUM Builder without manual override.
Typical Applications
- Oil & gas upstream/downstream DCS control cabinets
- Petrochemical and refinery process control systems
- Power generation plant automation (boiler, turbine, BOP)
- Pulp & paper and chemical batch process control
- Water treatment and utility SCADA/DCS hybrid systems
- Pharmaceutical manufacturing with validated CENTUM CS platforms
System Compatibility
| DCS Platform | Compatible | Notes |
|---|---|---|
| CENTUM CS 1000 | ✔ Yes | Primary target platform |
| CENTUM CS 3000 | ✔ Yes | Widely deployed; direct fit |
| CENTUM VP (R4–R5) | ✔ Yes | Backward-compatible ESB nest |
| CENTUM VP R6+ | ⚠ Verify | May require ANB11D series; consult engineering |
| CENTUM XL / μXL | ✘ No | Different bus architecture |
| ProSafe-RS | ✘ No | Safety system uses separate module family |
Selection Guide
Use the following decision flow to confirm the correct ESB Bus Node Unit for your application:
- Identify your CENTUM platform — CS 1000, CS 3000, or VP. Check the FCS nameplate or CENTUM Builder project file.
- Confirm ESB nest slot count — ANB10D-427 occupies one nest slot; verify available slots in your I/O nest.
- Check hardware suffix requirement — review your existing installed base. If S1 units are installed and stable, S2 is a safe upgrade. If S2 is already installed, do not downgrade to S1.
- Verify ESB node address — each ANB10D unit requires a unique ESB node address set via DIP switch. Confirm address availability before ordering spares.
- Assess quantity for sparing — for critical process units, maintain a minimum 1:4 hot-spare ratio per ESB segment.
- Contact Konmask — provide your CENTUM system revision and FCS tag number for sourcing confirmation.
Quality Assurance & Sourcing
- Source: New-surplus OEM stock and professionally refurbished units from decommissioned CENTUM systems.
- Inspection: Each unit inspected for physical integrity, connector condition, and ESB communication function prior to shipment.
- Traceability: Batch records and serial number documentation available on request.
- Packaging: Anti-static ESD packaging with desiccant; double-boxed for international freight.
- Warranty: 12-month functional warranty from date of shipment.
- Lead Time: In-stock units ship within 3–5 business days; sourced units 2–4 weeks.
How to Order
- Add the ANB10D-427 S2 to your cart and proceed to checkout, or
- Email support@konmask.com with your PO, required quantity, and delivery address.
- For urgent requirements or bulk orders (>5 units), call +0086 19859288691 for priority sourcing.
- Provide your CENTUM system revision and plant site for technical pre-sales verification if needed.
Replacement & Compatibility FAQ
Q: Can I replace an ANB10D-427 S1 with an S2 without reconfiguring the FCS?
A: In most CENTUM CS 3000 and VP installations, yes — the S2 is a hardware revision upgrade and is recognized by the same FCS configuration. However, always perform a controlled switchover during a planned maintenance window.
Q: Is the ANB10D-421 the same as the ANB10D-427?
A: They are within the same ANB10D family but may have different ESB address range support or nest slot assignments. Verify against your CENTUM Builder I/O module list before substituting.
Q: Can this unit be used in a ProSafe-RS safety system?
A: No. ProSafe-RS uses a dedicated safety-rated module family. The ANB10D-427 S2 is not certified for SIL-rated safety loops.
Q: Do you supply the ESB cable and terminator with the unit?
A: ESB cables and terminators can be sourced separately. Please specify your ESB segment length when enquiring.
Q: What is the maximum number of ANB10D units per ESB segment?
A: Yokogawa CENTUM documentation specifies a maximum of 8 node units per ESB segment. Consult your FCS engineering drawings for your specific topology.
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