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PRODUCT DESCRIPTION
EC402-51 S1 ESB Bus Coupler Module
Yokogawa EC402-51 S1 is an esb bus coupler module in the CENTUM VP FIO range. It connects a field control unit to ESB node units and supports the documented local I/O communication arrangement. The -51 code identifies the standard non-explosion-protected version with the G3 environment option.
Two front ESB ports support upper and lower branches, each with a standard 10 m transmission distance. The module transmits I/O data at 128 Mbps and draws 0.5 A. A pair of modules can be installed for dual-redundant ESB communication; node limits depend on the specific field control unit and connection topology.
Two front ESB ports support upper and lower branches, each with a standard 10 m transmission distance. The module transmits I/O data at 128 Mbps and draws 0.5 A. A pair of modules can be installed for dual-redundant ESB communication; node limits depend on the specific field control unit and connection topology.
BEFORE YOU BUY
Confirm the complete esb bus coupler module
ACTUAL APPLICATIONS
Application context for EC402-51 S1
EC402-51 S1 is an esb bus coupler module in the CENTUM VP FIO range. It serves oil & gas, chemical processing, power generation. Suitability depends on the selected process, electrical ratings and installed configuration.
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01 · OIL & GAS
Oil Refining and Natural Gas Production
Petroleum Refining and ProcessingNatural Gas Processing Production -
02 · CHEMICAL PROCESSING
Chemical Manufacturing and Petrochemical Production
Industrial Chemical ManufacturingPetrochemical Processing and Production -
03 · POWER GENERATION
Electric Power Generation and Energy Production
Thermal Power GenerationBiomass Energy and Cogeneration
Technical specifications for EC402-51 S1
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Product ModelEC402-51 S1
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Product ParametersESB Bus Coupler Module
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In stock1 unit
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ManufacturerYokogawa
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ESB front ports2
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I/O data transmission rate128 Mbps
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Standard node limit per branch9 units
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Standard branch transmission distance10 m maximum
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Combined branch transmission distance20 m maximum
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Module current consumption0.5 A
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Corrosive gas environment optionISA-S71.04 G3
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Dual-redundant coupler quantity2 modules
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Non-redundant FCU installation slot7
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Redundant partner installation slot8
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Star branch node limit with A2FV50 and ANT4x112 units per branch, CENTUM VP R6.06 or later
View all additional
Alternative Names
EC402-51 S1
CENTUM VP FIO ESB Bus Coupler Module
VP FIO 2 esb front ports
SYSTEM & REPLACEMENT CHECK
Information needed before ordering
Three direct checks to secure your system integration and minimize ordering risks.
Information
System integration
Replacement check
Manuals & support
SYSTEM INTEGRATION
Integrate EC402-51 S1 esb bus coupler module
Yokogawa EC402-51 S1 is a esb bus coupler module in the CENTUM VP FIO range. It connects a field control unit to ESB node units and supports the documented local I/O communication arrangement. The -51 code identifies the standard non-explosion-protected version with the G3 environment option.
Two front ESB ports support upper and lower branches, each with a standard 10 m transmission distance. The module transmits I/O data at 128 Mbps and draws 0.5 A. A pair of modules can be installed for dual-redundant ESB communication; node limits depend on the specific field control unit and connection topology.
Use the applicable CENTUM VP FIO documentation for EC402-51 S1. Verify the complete configuration, connection assignments and environmental limits, then record the functional checks before commissioning.
Features:
- ESB front ports: 2
- I/O data transmission rate: 128 Mbps
- Standard node limit per branch: 9 units
The EC402-51 S1 esb bus coupler module requires appropriate configuration before system integration and commissioning.
INTERCHANGEABILITY
Verify EC402-51 S1 esb bus coupler module
Identify the complete EC402-51 S1 nameplate and the installed CENTUM VP FIO configuration before replacement. Match all connectors and the documented electrical ratings.
Two front ESB ports support upper and lower branches, each with a standard 10 m transmission distance. The module transmits I/O data at 128 Mbps and draws 0.5 A. A pair of modules can be installed for dual-redundant ESB communication; node limits depend on the specific field control unit and connection topology.
After fitting EC402-51 S1, restore the recorded configuration and verify every affected signal or communication path. Retain diagnostic results and the acceptance record.
Features:
- ESB front ports: 2
- I/O data transmission rate: 128 Mbps
- Standard node limit per branch: 9 units
The EC402-51 S1 esb bus coupler module requires replacement verification against the complete installed configuration and current manufacturer documentation.
DOCUMENTATION STATUS
Browse the Manuals, Datasheets, Official Documents, Links
Important Notice: The linked files are Amikong-hosted reference documents. Match their product identity and scope to the supplied assembly, and consult the applicable manufacturer instructions before use. Accessories and additional documents are included only when expressly listed in the quotation.
Features:
- Verify document identity before procurement or installation
- Match the complete order to the manufacturer document scope
- Accessories are supplied only when listed in the quotation
Documentation for the EC402-51 S1 esb bus coupler module must be checked for document applicability before installation or commissioning.
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Important notice
Manuals, software, firmware, cables, calibration data and accessories are included only when listed in the quotation. AMIKON is an independent supplier and is not affiliated with or authorised by the manufacturer.
This content has been produced using multiple sources. Takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
BUYER INFORMATION
Commercial terms without hidden steps
Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
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01
Shipping & delivery
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DispatchEligible stock: same / next day
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CarriersDHL, FedEx or UPS
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Ship fromXiamen, China
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Packed size3.2 × 12.8 × 13cm
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Shipping weight0.24kg
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Payment & customs
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PaymentBank transfer (T/T)
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CurrenciesUSD · EUR · GBP · RMB
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Credit cardsNot accepted
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HS reference8538900000
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OriginJapan
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03
Warranty & returns
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Warranty12 months from AMIKON
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InspectionLabel, condition and packing checks
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ReturnsPrior RMA authorisation required
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CompatibilityConfirm before order
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OEM warrantyDoes not apply
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Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
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Part checked
Full suffix recorded -
Condition checked
Label and appearance -
Packing checked
Antistatic protection -
Tracking supplied
Established couriers -
Sandy Lin
Dedicated account manager · 15+ years
FREQUENTLY ASKED QUESTIONS
Questions buyers ask about EC402-51 S1
Direct answers about identity, compatibility, stock, warranty, payment and shipping.
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How many ESB branches does EC402 expose?
EC402-51 S1 has two front ports, one for the upper branch and one for the lower branch. -
What is the standard cable-distance limit per ESB branch?
For EC402-51 S1, each standard branch is limited to 10 m, with a total of 20 m across both branches. -
Can every field control unit use twelve nodes per branch?
No. The higher EC402-51 S1 limit requires the documented A2FV50S/A2FV50D star arrangement with ANT4x1 and CENTUM VP R6.06 or later. -
What does the -51 coupler option mean?
The -51 execution of EC402-51 S1 is standard type without explosion protection, with the ISA Standard G3 option. -
Which slot is used for a single EC402 coupler?
Install the non-redundant EC402-51 S1 in slot 7 of the documented FCU; slot 8 is covered by a dummy module. -
What supplies the dual ESB configuration?
Two EC402-51 S1 couplers occupy the documented slots 7 and 8 for dual-redundant ESB operation. -
Which station details are required for an ESB coupler quotation?
Provide the EC402-51 S1 nameplate, FCU type, software release, branch topology and node quantity. -
How is an arriving two-port ESB coupler checked?
Inspect the EC402-51 S1 label and both ESB connectors, then compare slot assignment and current requirements with the station record.
READY TO VERIFY YOUR PART?
Get a EC402-51 S1 quote with price, lead time and revision check.
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