Yokogawa SEC401-51 ESB Bus Coupler — Industrial Safety Bus Coupler

Product Overview — Core Value

• Yokogawa builds the SEC401-51 for dependable safety I/O coupling in industrial automation plants.
• The module enables clear separation between safety nodes and non-safety networks for simplified system design.
• Operators gain reduced wiring complexity and faster system commissioning with this compact coupler.

Technical Specifications

• Brand: Yokogawa
• Model: SEC401-51
• Category: ESB Bus Coupler Module
• Transmission speed: 128 Mbps for I/O data exchange
• Maximum transmission distance: 10 m
• Connectable safety node units: 9 units maximum
• Current consumption: 0.5 A
• Unit weight: 0.24 Kg
• Suffix Information Tree:
  • Suffix 1: 5 = Standard type with no explosion protection
  • Suffix 2: 1 = With ISA Standard G3 option
• Refer to the Yokogawa datasheet for extended specifications such as frequency response and sensitivity.

Installation Guide

• Mount the SEC401-51 on a DIN rail or panel using correct torque values.
• Connect safety node wiring according to Yokogawa wiring diagrams.
• Ensure 24 VDC stable power and 0.5 A current availability before startup.
• Separate signal and power cables to reduce electromagnetic interference.
• Perform a functional test to verify safety node communication.

Packaging List

• 1 × SEC401-51 ESB Bus Coupler Module
• 1 × Quick Start Guide
• 1 × Mounting Screws and Rubber Spacers
• 1 × Protective Inner Box and Outer Carton
• Shipping Options: FedEx, UPS, DHL

Environmental & Robustness Notes

• Designed for industrial environments with cabinet installation.
• Provides excellent EMI tolerance through differential signaling.
• Consult Yokogawa datasheet for temperature and humidity limits.

FAQ

• Q: How many safety nodes can this coupler handle?
  A: Up to 9 safety node units.
• Q: What is the maximum I/O transmission speed?
  A: The coupler operates at 128 Mbps.
• Q: Which suffix indicates standard non-explosion type?
  A: Suffix 5 = Standard type with no explosion protection.
• Q: Which suffix corresponds to ISA Standard G3?
  A: Suffix 1 = With ISA Standard G3 option.
• Q: What courier options are available for delivery?
  A: FedEx, UPS, and DHL worldwide shipping options.

Ordering & Contact

• For inquiries, contact: sales@powergearx.com
• WhatsApp: +86 18030005825
• Please include model SEC401-51 and suffix details when requesting a quote.

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