EC402-50 S1 Yokogawa CENTUM VP Datasheet & Technical Manual

ESB Bus Coupler Module | Yokogawa EC402-50 S1 CENTUM VP

ESB Bus Coupler Module | Yokogawa EC402-50 S1 CENTUM VP

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Yokogawa EC402-50 S1 ESB Bus Coupler Modules The Yokogawa EC402-50 S1, also cataloged as the EC402 ESB Bus Coupler Module,...

SKU: EC402-50 S1

Manufacturer: Yokogawa
Product No.: EC402-50 S1
Product Type: Communication Interface Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 400g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa EC402-50 S1 ESB Bus Coupler Modules

The Yokogawa EC402-50 S1, also cataloged as the EC402 ESB Bus Coupler Module, operates as a dedicated hardware component for high-speed bus communication execution within CENTUM VP and ProSafe-RS systems. The unit links system racks over dual redundant communication paths, facilitating continuous network transfers across distributed architecture backplanes. Featuring a standard non-explosion protection profile and backward compatibility for EC402-01 units, the module establishes deterministic physical links for DCS signal processing.

Hardware Specifications

Parameter	Specification
Model	EC402-50 S1
Brand	Yokogawa
Origin	Japan
Weight	0.35 - 0.40 kg (2.0 kg shipping weight)
Dimensions	Standard Yokogawa I/O slot footprint
Operating Temp	-20 to 60 deg C
Power Consumption	~400 mA at 5 VDC (backplane power)
Protocols	Vnet/IP, Ethernet TCP/IP, ESB Bus
Communication Ports	Dual redundant Ethernet ports (RJ-45)
Data Transfer Rate	100 Mbps full duplex
Operating Humidity	10 to 95% RH (non-condensing)
Isolation Voltage	1500 VAC between communication paths and logic for 1 minute

Channel-to-Channel Isolation and DCS Signal Integrity

Yokogawa DCS networks require galvanic isolation to protect internal backplane processing logic from field transmission noise and earth loops. The EC402-50 S1 incorporates 1500 VAC dielectric isolation between external communication interfaces and internal system electronics. Operating alongside Vnet/IP or 4-20 mA HART loop subnetworks, this isolation barrier prevents noise propagation across redundant field bus branches and stabilizes deterministic control communications.

Frequently Asked Questions

Q: Can the EC402-50 S1 serve as a direct functional replacement for older EC402-01 modules? A: Yes, the EC402-50 model code represents the direct functional replacement for legacy EC402-01 ESB Bus Coupler Modules.

Q: How does the module handle communication failure on an active network port? A: The hardware utilizes dual redundant ports (RJ-45) to automatically route real-time data across the backup communication path without interrupting system logic execution.

Q: What power source supplies the electrical operating requirements of the module? A: The module draws power directly from the 5 VDC system backplane bus, consuming approximately 400 mA during standard operation.

Field Installation Guidelines

Power down the targeted rack slot or verify system redundancy prior to inserting or removing the coupler module.
Align module edge connectors with the rack backplane slots to avoid bending connector pins during physical installation.
Connect dedicated Ethernet/ESB bus cabling firmly to both RJ-45 ports to ensure redundant loop communication.
Route communication cables in separate cable trays away from high-voltage AC conductors to limit electromagnetic noise coupling.
Verify that network cable shields ground properly according to Yokogawa cabinet earthing standards.

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