EC401-10 YOKOGAWA CENTUM CS Datasheet & Technical Manual

YOKOGAWA EC401-10 CENTUM VP ESB Bus Coupler Module

YOKOGAWA EC401-10 CENTUM VP ESB Bus Coupler Module

Availability: 10 left in stock

YOKOGAWA EC401-10 CENTUM ESB Bus Coupler Module The YOKOGAWA EC401-10, also cataloged as the EC401 ESB Bus Coupler Module, operates...

SKU: EC401-10

Manufacturer: Yokogawa
Product No.: EC401-10
Product Type: Bus Coupler Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 300g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

YOKOGAWA EC401-10 CENTUM ESB Bus Coupler Module

The YOKOGAWA EC401-10, also cataloged as the EC401 ESB Bus Coupler Module, operates as a dedicated hardware component for communication interface tasks between local and expansion I/O subsystems within CENTUM VP / CS 3000 Field Control Station networks.

Suffix Breakdown & Model Matrix

Code	Type	Description
EC401	Base Model	ESB Bus Coupler Module
-1	Suffix Code	Standard type with no explosion protection
0	Suffix Code	Basic type

Hardware Specifications

Parameter	Specification
Model	EC401-10
Brand	Yokogawa
Origin	Singapore
Weight	1.5 kg (Shipping Weight) / 0.3 kg (Net Weight)
Dimensions	15.2 cm x 15.2 cm x 5.1 cm
Operating Temp	-10 deg C to +60 deg C
Power Consumption	24 VDC nominal
Function	Interfaces local and expansion I/O nodes with the host FCS
Communication Interface	Proprietary Yokogawa ESB Bus
Isolation	Galvanic isolation between system backplane and bus lines
Diagnostics	Dual-bus transmission monitoring, parity checks, and hardware loopback testing
Mounting	Slot-mounted in Field Control Unit (FCU)

ESB Bus Communication Interface and Galvanic Isolation

To maintain continuous data synchronization between the Field Control Station (FCS) processor card and the remote node interface modules, the unit utilizes dual-redundant ESB bus lines. The module features integrated galvanic isolation circuits that electrically decouple the internal rack backplane logic from the long-distance copper transmission cables. This structural separation prevents the propagation of electromagnetic interference and ground-potential differences across separate cabinets, suppressing noise and safeguarding high-speed data frame integrity under high-density switching conditions.

Frequently Asked Questions

Q: Does the unit support redundant configurations, and how is line switching managed?

A: Yes. When paired with a second module in a redundant slot configuration, the hardware actively monitors transmission frame errors. If a communication failure occurs on the primary line, control switches to the secondary bus in less than 1 millisecond.

Q: Can this module be hot-swapped while the Field Control Station is running?

A: No. Replacing an active ESB bus coupler while the FCS is online can interrupt the communication path to all connected expansion I/O nodes. Power down the corresponding rack branch or ensure system standby protocols are active before extraction.

Q: How does the host controller detect a physical cable disconnection on the ESB bus?

A: The module runs hardware-level loopback diagnostics. A physical line break disrupts the continuous carrier signal, prompting the module to set a transmission-error flag in the system status registers and trigger a diagnostic alarm on the operator console.

Field Installation Guidelines

Bus Cable Bend Radius: Maintain a minimum bend radius of 75 mm for all ESB bus cables to prevent copper core deformation and signal attenuation.
Shield Grounding Terminal: Securely connect the ESB bus cable shield terminations to the system cabinet's functional instrument ground bar. Do not daisy-chain ground lines.
Slot Allocation: Install the module only in the dedicated coupler slots of the Field Control Unit (FCU) backplane as specified in the system configuration drawing to prevent logic initialization errors.

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