Yokogawa SEC402-51 ESB Bus Coupler Module | Dual-Port Safety Master

Yokogawa SEC402-51 ESB Bus Coupler Module

• The Yokogawa SEC402-51 is a dual-port ESB Bus Coupler for high-speed safety networks.
• It acts as a master interface between I/O modules and control units.
• Perfect for industries that demand fast, secure, and stable data transmission.
• Backed by a 12-month factory warranty and full after-sales support.

Key Highlights

• Dual-port interface supports upper and lower ESB bus connections.
• Connect up to 18 modules — 9 on each port.
• Data transmission at 128 Mbps ensures fast response.
• Transmission distance up to 10 m per segment.
• Lightweight design: only 0.24 kg.
• Power consumption: 0.5 A.
• Mounting position: seventh and eighth slots of safety control unit.

Technical Specifications

• Brand: Yokogawa
• Model: SEC402-51
• Product Type: ESB Bus Coupler Module
• Transmission Speed: 128 Mbps
• Transmission Distance: 10 m maximum (upper/lower bus)
• Current Consumption: 0.5 A typical
• Weight: 0.24 kg
• Temperature Range: -20°C to +70°C
• Humidity: 10%–90% RH non-condensing
• Vibration Resistance: 5–9 Hz / ±1.5 mm amplitude
• Storage Temperature: -40°C to +85°C

Suffix Code Tree

• Model: SEC402-51
  • Suffix -5: Standard Type, no explosion protection
  • Suffix 1: With ISA Standard G3 compliance

Installation Notes

• Mount the SEC402-51 in the 7th or 8th slot of the control rack.
• Use shielded twisted pair cables for noise immunity.
• Keep signal cables under 10 m per section.
• Ensure steady 24 VDC power before system startup.
• Inspect connectors for tight fit before finalizing installation.

Product Advantages

• Supports high-speed and redundant ESB communication.
• Simple setup and minimal maintenance requirements.
• Strong signal integrity with EMI shielding design.
• Lightweight, compact, and ideal for space-limited panels.
• Reliable operation in harsh industrial conditions.

Packaging & Delivery

• 1 × SEC402-51 ESB Bus Coupler
• 1 × Quick Start Installation Sheet
• 1 × Mounting Screw Set
• 1 × Protective Box and Outer Carton
• Delivery via FedEx, UPS, or DHL worldwide.

FAQ

• Q: What makes the SEC402-51 different from SEC401-51?
  A: The SEC402-51 has dual ports, allowing 18 total module connections.
• Q: Can this module handle redundant communication lines?
  A: Yes, it supports dual-port redundancy for system reliability.
• Q: What power source is needed?
  A: A 24 VDC power supply capable of delivering 0.5 A current.
• Q: How is the module cooled?
  A: It uses natural convection; no fan required.
• Q: Is this module compatible with older Yokogawa systems?
  A: Yes, it is backward-compatible with standard ESB safety units.

Contact & Support

• For technical or sales inquiries, email sales@powergearx.com.
• WhatsApp support: +86 18030005825
• Warranty period: 12 months from the date of shipment.

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