Yokogawa SEC402-51 | ESB Coupler for Safety Control Units

Yokogawa SEC402-51 ESB Bus Coupler Module

The Yokogawa SEC402-51 functions as a 2-port ESB bus master. It installs in control unit slots 7 and 8 to manage up to 18 connected devices.

Core Capabilities

• Master Interface: Acts as the primary ESB bus communication controller
• Dual-Port Design: Two independent ports (upper and lower) for network expansion
• Connection Scale: Supports 9 units on the upper side and 9 units on the lower side
• System Integration: Mounts specifically in the seventh and eighth slots of the safety control unit

Performance Specifications

• Data Speed: High-performance 128 Mbps I/O data transmission
• Cable Distance: Maximum 10 meters per bus cable segment
• Power Requirement: Operates on 0.5 A current consumption
• Physical Weight: Lightweight design at approximately 0.24 kg

Product Configuration

• Model Designation: Yokogawa SEC402-51 ESB Bus Coupler Module
• Model Type: SEC402 indicates a 2-Port ESB Bus Coupler
• Standard Type: Suffix -5 confirms no explosion protection
• Industry Compliance: Suffix 1 shows ISA Standard G3 compliance

Setup Information

• Install this module only in the designated control unit slots (7 and 8)
• Plan cable runs within the 10-meter limit for reliable signal integrity
• Verify your system power supply can deliver the required 0.5A
• This standard type module is not suitable for hazardous locations

Key Questions Answered

• Total device connections? The SEC402-51 connects up to 18 units (9 per port).
• What is the data rate? It provides 128 Mbps transmission speed for connected devices.
• Installation location? It mounts in slots 7 and 8 of the safety control unit.