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

Product Overview

The Yokogawa ANT401-50 serves as a high-speed Optical ESB Bus Repeater Master Module for CENTUM VP Distributed Control Systems. This module facilitates long-distance communication between the Field Control Station (FCS) and remote I/O nodes by converting electrical ESB bus signals into optical signals. By utilizing fiber optic media, the ANT401-50 extends the system reach while providing total electrical isolation between cabinet locations. We supply this unit as 100% Brand New and Original in factory packaging to ensure mission-critical network performance and zero-latency data synchronization.

Part Number Breakdown

The ANT401-50 follows Yokogawa's structured suffix logic for optical communication hardware:

Technical Specifications

The ANT401-50 provides the physical layer for high-bandwidth DCS backplane extension via fiber optics.

• Communication Protocol: ESB Bus (Enhanced Service Bus).

• Interface Type: Fiber Optic (Master side).

• Transmission Distance: Supports distances up to 5 km or 50 km depending on the associated slave module and cable type.

• Number of Ports: 2 ports (Chain or Star topology support).

• Redundancy: Supports dual-redundant configuration within the FCS.

• Power Consumption: 0.5 A at 5V DC.

• Condition: Guaranteed 100% Brand New Original.

Engineering Advantages

The ANT401-50 provides technical solutions for large-scale plant layouts and high-interference environments:

• Total Galvanic Isolation: By converting electrical signals to light, the ANT401-50 eliminates ground loops and prevents lightning-induced surges from traveling between different buildings or control rooms. This protects expensive DCS processors from field-side electrical faults.

• High-Speed Deterministic Extension: Unlike standard Ethernet gateways, the ANT401-50 maintains the raw speed of the ESB bus. This ensures that remote I/O modules respond with the same millisecond-level precision as local I/O, maintaining the integrity of fast control loops.

• Immunity to Electromagnetic Interference (EMI): In facilities with heavy motors and high-voltage switchgear, copper bus cables often pick up noise. The optical link of the ANT401-50 remains completely immune to EMI and RFI, ensuring error-free data transmission in the most demanding environments.

• Simplified Long-Distance Topology: The module supports both chain and star topologies. This allows engineers to design flexible network layouts that follow the physical piping and cabling trays of the plant, reducing the total volume of fiber optic cable required.

FAQs

• Does the ANT401-50 require a slave module?

  Yes. The ANT401-50 (Master) must communicate with an ANT502 (Slave) module located in the remote I/O node. These modules work in pairs to bridge the optical link.

• What type of fiber optic cable should I use?

  The ANT401-50 typically utilizes quartz glass multimode or single-mode fiber depending on your specific distance requirements. Always verify the optical power budget against your cable length and patch panel losses.

• Can I replace an older ANT401 with this version?

  The ANT401-50 is the standard current-generation master module for CENTUM VP. While it maintains backward compatibility with most ESB bus architectures, always verify your system's software revision for specific driver support.

• Is this a brand new original Yokogawa part?

  Yes. We only provide 100% Brand New hardware. This module ships in the original Yokogawa box with the factory seal intact and includes full traceability.