Yokogawa S2EN402-S0001 N-ESB Bus Coupler Module

Overview

The Yokogawa S2EN402-S0001 is an N-ESB Bus Coupler Module designed for the CENTUM VP distributed control system. It connects the Field Control Unit (FCU) with N-IO nodes. This connection enables fast and reliable communication across the N-ESB bus. The module integrates I/O modules into the control architecture efficiently. It also supports flexible expansion of the system. For high availability, it operates in a dual-redundant configuration. The module communicates through two RJ-45 N-ESB bus ports and uses unshielded twisted pair cables.

Technical Specifications

• Model: S2EN402-S0001

• Function: N-ESB Bus Coupler Module

• Interface: N-ESB bus connection between FCU and N-IO nodes

• Channel Count: 16 isolated channels (via connected I/O modules)

• Max Current Consumption: 700 mA at 24 V DC (all channels digital I/O)

• Withstand Voltage: 1500 V AC for 1 minute; 42 V DC continuous

• Communication Ports: Two RJ-45 N-ESB bus ports

• Redundancy: Supports dual-redundant configuration

• Transmission Cable: Unshielded twisted pair (UTP), Cat 5 or better

• Transmission Speed: 100 Mbps

• Transmission Distance: Max 100 meters between FCU and N-IO or between N-IO nodes

• Mounting: Installed on baseboard (e.g., A2BN5D) in odd-numbered and adjacent slots

• Weight: 0.24 kg

• Suffix Code: -S0001 (Standard type, no explosion protection, ISA Standard G3 option)

• Safety Note: Use isolation barriers; do not connect Zener barriers for IS devices