Product Overview

The YNT511D-P42/KT is an optical bus repeater rack assembly specifically engineered for Yokogawa’s CENTUM VP and CENTUM CS distributed control architectures. This hardware serves as a central communication hub that extends the physical reach of the optical ESB bus, allowing for decentralized control nodes to operate across extensive plant distances without signal degradation. By converting and amplifying optical signals, the YNT511D-P42/KT ensures that data integrity is maintained between the primary controller and remote I/O units. The rack is built to 19-inch industrial standards, providing a high-density solution for scaling complex automation networks while maintaining the deterministic performance required for mission-critical processes.

Hardware Infrastructure and Technical Metrics

• Module Capacity: 13 available slots for ESB repeater modules

• Supply Voltage: 24 V DC

• Operational Current: 60 mA (Maximum consumption)

• Dielectric Strength: 1 kV DC Isolation

• Physical Footprint: 48.3 cm x 17.8 cm x 30.5 cm (Standard 19-inch rack)

• Net Mass: Approximately 3.6 kg (8 lbs)

• Installation Method: Rack-mounted within standard industrial cabinets

• Network Protocol: Optical ESB Bus extension

Strategic Industrial Implementations

This optical repeater rack is essential for large-scale automation projects where control cabinets are physically separated by significant distances. Primary deployment scenarios include:

• Bridging communication between central control rooms and remote processing areas in refineries.

• Facilitating multi-device connectivity in large-scale offshore oil and gas production platforms.

• Extending control bus networks across multiple floors or wings in chemical manufacturing facilities.

• Enabling high-speed, isolated data transmission in power generation plants where electrical interference is prevalent.

FAQ

Q: How many repeater modules can be housed within the YNT511D-P42/KT rack?

A: The rack is designed with a high-density layout that supports up to 13 individual optical ESB repeater modules, allowing for significant network scalability.

Q: Is this module compatible with older Yokogawa systems?

A: Yes, the YNT511D-P42/KT is fully compatible with both the legacy CENTUM CS and the modern CENTUM VP distributed control system platforms.

Q: What benefit does the 1 kV DC isolation provide?

A: This high level of electrical isolation protects the core control system from voltage surges and ground loops that may occur along the extended optical bus cables, ensuring stable operation.

Q: Does this rack require a specialized power source?

A: The unit operates on a standard industrial 24 V DC power supply, making it easy to integrate into existing control cabinet power distribution systems.

Q: What is the primary function of the ESB bus repeater in this configuration?

A: The primary role is to overcome the distance limitations of standard copper or short-range optical connections, allowing for a much broader geographical distribution of I/O nodes.