Description
The Yokogawa EC402-50 is a high-speed ESB (Extended System Bus) bus node interface module designed for the CENTUM VP distributed control system (DCS). This module functions as the slave-side communication link installed in an ESB Bus Node Unit (such as the ANB10D or ANB11D), bridging data transfers between the master Field Control Station (FCS) processor and local field network I/O modules over an ESB bus cable.
+-----------------------------------------------------------+
| Yokogawa EC402-50 Interface Module |
| |
| [ Master FCS Processor ] |
| │ |
| ▼ (YCB301 ESB Bus Cable) |
| [ ESB Bus BNC / Connector Ports ] |
| │ |
| ▼ |
| [ Protocol Translation / Communication Engine ] |
| │ |
| ▼ |
| [ Backplane Interface Block ] |
| │ |
| ▼ |
| [ FIO Local Node Bus (ADV151, AAI141, etc.) ] |
+-----------------------------------------------------------+ Commercial & Availability Status
- Condition: New Original, Factory Sealed (Original OEM packaging)
- Availability: In stock
- Lead Time: Ships within 1–2 business days from order verification
- Warranty: 12-month comprehensive warranty covering hardware functionality
Pricing Note: The listed or displayed price is a reference rate based on current market inventory. Actual procurement costs vary based on component availability, volume requirements, and global logistics rates. Contact our sales office directly to request a formal commercial quotation.
Technical Specifications
| Parameter | Value |
| Model Number | EC402-50 |
| Module Type | ESB Bus Node Interface Module (Slave Side) |
| Compatible Nodes | ANB10S, ANB10D, ANB11S, ANB11D |
| Interface Ports | 2 x ESB Bus communication ports (for line redundancy) |
| Transmission Distance | Maximum 10 meters via standard YCB301 cable |
| Current Consumption | 0.5 A maximum from the 5 V DC local backplane power supply |
| Isolation Resistance | 20 MΩ or greater at 500 V DC |
| Withstanding Voltage | 500 V AC for 1 minute |
| Configuration Suffix Code | -50 (Standard style code for worldwide deployment) |
| Weight | 0.54 kg |
Installation and System Integration Notes
Are you pairing this interface card with a redundant partner module in your I/O rack? In field deployments of CENTUM VP architectures, true line redundancy requires installing two EC402-50 modules into the designated slot positions (typically slots 11 and 12 on the node baseplate). These modules interface directly with the master-side EC401 card housed inside the main control station rack using pre-assembled YCB301 bus cables.
Well, technically it supports up to a 10-meter separation distance using standard copper ESB cabling, but if your expansion rack needs to sit further away in a separate electrical room, you must switch to an optical fiber extension interface (such as the NTDK array) instead of copper bus connections. When securing the bus connectors to the face of the module, ensure the mechanical locking screws are completely hand-tightened—don’t underestimate this step, as field floor vibration can walk unlatched communication headers loose, generating erratic transmission timeouts and triggering false node switchovers.
Verify exact physical address configuration constraints and bus length limitations with the official Yokogawa General Specifications document (GS 33J60F20-01EN) prior to placing the node online.
Global Trade & Shipping Logistics
Shipping highly precise DCS node cards across international boundaries requires strict compliance with regional trade protocols, customs reporting, and protective packaging methods.
- HS Code (Harmonized System): 85389091 (Electronic assemblies for automatic regulating or controlling instruments)
- ECCN (Export Control Classification Number): EAR99 (No specific export license required for most commercial destinations, subject to standard restricted-party screening)
- Incoterms Options: Ex Works (EXW), Free Carrier (FCA), or Cost, Insurance, and Freight (CIF) to your designated port of entry.
- Customs Documentation: Every international shipment includes an itemized Commercial Invoice, a detailed Packing List specifying net/gross weights, and a Certificate of Origin where required by regional free trade agreements.
- Transit Packaging: Sealed inside anti-static ESD shielding layers, nested within heavy-duty, double-walled corrugated shipping cartons with form-fitting foam padding to withstand industrial air freight transit sorting.
For critical refinery turnarounds or emergency field failures, we utilize priority air freight (DHL Express, FedEx International Priority, or UPS Worldwide Saver) to minimize operational downtime. Standard customs processing usually clears within 24 to 48 hours provided the importer of record documentation is complete.
Frequently Asked Questions
- What is the specific difference between the Yokogawa EC401 and EC402 modules?
The EC401 functions strictly as the master-side ESB Bus master module, which sits in the Field Control Station (FCS) main rack. The EC402-50 functions as the slave-side interface module, located inside the remote expansion node unit (ANB10D) to distribute commands down to the local FIO modules.
- Can the EC402-50 module be hot-swapped while the node is powered and operational?
Yes, if the node unit is running in a dual-redundant configuration. If one EC402-50 module experiences an internal component exception, its redundant partner carries the network communication load. You can replace the faulty card without dropping the connected I/O channels, provided you follow the precise swap-out steps outlined in the Yokogawa maintenance manuals.
- What does the “-50” suffix code signify on this module?
The suffix code designates the revision history and environmental application standards. The code “50” indicates the standard global version designed for standard industrial installations, lacking the unique G3 extreme atmospheric corrosion-resistant chemical coating option.
Would you like to examine the node address dip-switch setting diagrams or cross-referencing compatibility charts for matching master modules?
