Yokogawa ANT401-50/CU1T CENTUM VP Optical ESB Bus Repeater Master Module

Product Overview

The Yokogawa ANT401-50/CU1T serves as the primary Optical ESB Bus Repeater Master Module for the CENTUM VP control system. This module extends the communication distance of the ESB bus via optical fiber, allowing the Field Control Station (FCS) to manage remote I/O nodes located up to 5 kilometers away. We supply this unit as 100% Brand New and Original, featuring the integrated connector unit and terminator (/CU1T) required for immediate system integration.

Part Number Breakdown

Technical Specifications

Engineering Advantages

• Long-Distance DCS Expansion: The ANT401-50 eliminates the distance limitations of copper ESB cabling. By converting electronic signals to optical pulses, it facilitates the control of remote process units across large-scale refineries or power plants up to a 5 km radius.

• Complete Electrical Isolation: Optical fiber transmission provides total immunity to ground potential differences and electromagnetic interference (EMI). This prevents lightning surges or high-voltage noise from damaging the central Field Control Station.

• Integrated Bus Termination: The /CU1T option includes the specific connector unit and bus terminator. This eliminates the need for separate termination hardware, simplifying the wiring architecture and reducing potential failure points in the bus loop.

• High-Speed Synchronization: The module maintains the strict timing requirements of the ESB bus. It ensures real-time data consistency between the master station and remote nodes, supporting the rapid scan rates necessary for critical safety and control loops.

FAQs

• What is the difference between the ANT401 Master and the ANT502 Slave module?

  The ANT401-50 acts as the Master module and resides at the Field Control Station (FCS) side. You must pair it with an ANT502 Slave module located at the remote node side to complete the optical link.

• Does this module support redundant configurations?

  Yes. For high-availability systems, you install two ANT401 modules in a redundant FCS configuration. This ensures that the remote I/O remains accessible even if one optical link or module fails.

• What type of optical fiber cable does the ANT401-50 require?

  This module typically utilizes quartz single-mode or multi-mode fiber depending on the specific network design. Always verify the connector type on the /CU1T unit to ensure compatibility with your site’s fiber optic patch cables.

• Can I use this module in hazardous areas?

  The "-5" suffix denotes a standard type with no explosion protection. You must install this module in a non-hazardous, controlled environment or within a suitably rated explosion-proof cabinet if used in Zone 2/Class I Div 2 areas.