EC402-51

Overview

The Yokogawa EC402-51 is an ESB bus coupler module designed for N‑IO/FIO systems. It provides a 2‑port master interface function, enabling reliable communication between safety control units and safety node units.

Identification

• Manufacturer: Yokogawa

• Model / Type Designation: EC402-51

• Catalog Description: ESB bus coupler module (for N‑IO/FIO, 2‑port)

Technical Characteristics

• Function: ESB bus master interface

• Number of Connectable Nodes:

  • Upper side: Max. 9 units

  • Lower side: Max. 9 units

  • Total: Max. 13 units

• Transmission Speed: 128 Mbps (I/O module data transmission)

• Transmission Distance:

  • Upper side: Max. 10 m

  • Lower side: Max. 10 m

  • Total: Max. 20 m

• Current Consumption: 0.5 A

Mechanical Characteristics

• Net Weight: Approx. 0.24 kg

Suffix Codes

• -5: Standard type with no explosion protection

• 1: With ISA Standard G3 option

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