Yokogawa EC402-50 | ESB Bus Coupler Module Thoughtful service

Overview

The Yokogawa EC402-50 is an ESB (Extended Serial Bus) coupler module for the FIO (Field Input/Output) system. It provides a communication bridge between the Field Control Unit (FCU) and node units, supporting up to 13 connected devices. The EC402 series offers more connection capacity and longer transmission distance compared to the EC401 series, making it suitable for high-reliability, high-speed industrial automation applications.

General Information

Part Number: EC402-50
Manufacturer: Yokogawa
Series: EC Series
Type: ESB Bus Coupler Module
Port: 1 ESB communication port
Compatibility: Works with AFV30S/D, AFV40S/D, A2FV50S/D, A2FV70S/D series and compatible node units
Mounting: FCU slot 7 (single bus) or slots 7 & 8 (redundant bus)
Redundancy Support: Dual redundant configuration supported
Country of Origin: Japan

Power Specifications

Supply Voltage: 24 V DC
Current Consumption: ~0.5 A
Protection: Surge and reverse-polarity protection

Communication & Interface

Interface Type: ESB (Extended Serial Bus)
Maximum Connected Nodes: Up to 13 devices
Data Rate: 128 Mbps
Transmission Distance: Up to 20 meters total (10 meters per side)
Diagnostics: LED indicators for communication link and fault status
Reset Features: Supports soft and hardware reset

Environmental

Operating Temperature: 0 °C to +55 °C
Storage Temperature: −20 °C to +70 °C
Humidity: 5% to 95% RH, non-condensing
Protection Rating: IP20

Dimensions & Weight

Dimensions: 130 x 129.5 x 32.8 mm

Weight: 0.24 kg

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