Product Overview

The Yokogawa NFBU200-S10 serves as the high-integrity structural and electrical backbone for CENTUM VP and ProSafe-RS Distributed Control Systems. This 19-inch rack-mountable unit provides the essential communication pathways and power distribution required for up to 8 Field I/O (FIO) modules. It streamlines the integration of field data by routing analog and digital signals directly to Safety Control Units or Field Control Units (FCU). Designed specifically for heavy industrial environments, the NFBU200-S10 maintains uninterrupted signal flow in refineries, chemical plants, and power grids.

Condition: 100% Brand New Original.

Part Number Breakdown: NFBU200 Series

Yokogawa utilizes a specific alphanumeric coding system to define the hardware revision and functional type:

Technical Specifications

The NFBU200-S10 integrates mechanical durability with a high-integrity electrical backplane architecture.

• Module Capacity: Supports up to 8 I/O Modules

• Mounting Type: 19-inch Rack Mount or DIN Rail Mount

• Input Power: 24 V DC (Distributed to all I/O slots)

• Bus Interface: Internal System Bus (FIO)

• Operating Temperature: 0°C to +50°C

• Dimensions: 350 × 130 × 32.8 mm

• Weight: 0.55 kg (1.20 lbs)

• Redundancy: Supports Dual-Redundant Bus Configurations

Engineering Advantages

• High-Integrity Bus Routing: The backplane employs high-density multi-layer traces to distribute the system bus and 24V DC power simultaneously. This architecture eliminates point-to-point internal wiring, which removes the primary cause of communication failures—loose connections and wire fatigue.

• Versatile Installation: Engineers can deploy the NFBU200-S10 in standard 19-inch control room racks or compact, field-mounted cabinets via DIN rail mounting. This adaptability solves spatial constraints in both legacy retrofits and new installations.

• Hot-Swappable Maintenance: The mechanical slot design allows technicians to insert or remove I/O modules while the base unit remains energized. When used with redundant controllers, this feature enables system expansion and hardware replacement without halting live processes.

• Advanced Thermal Management: The open-frame design facilitates natural convection. By promoting airflow around installed modules, the unit prevents heat stagnation in high-density I/O configurations, significantly extending the system's Mean Time Between Failures (MTBF).

FAQs

• Can I mix different signal types on a single NFBU200-S10 base?

  Yes. The universal backplane accepts any Yokogawa FIO-compatible modules, including AAI (analog), ADV (digital), and specialized communication units. Ensure the total power draw stays within the node's power supply capacity.

• How does the unit handle power redundancy?

  The NFBU200-S10 facilitates redundancy through its dual-bus architecture. By installing two power supply modules (such as the PW482) into the node, the base unit ensures continuous power distribution even if one source fails.

• Is Style S1 compatible with older CENTUM versions?

  Style S1 represents a stable, industry-proven hardware baseline. It maintains 100% backward compatibility with legacy systems while fully supporting the latest CENTUM VP R6.x environments.

• Does the base unit require specific terminal blocks?

  The base unit focuses on the I/O module interface. Your choice of wiring—Pressure Clamp, KS Cable, or others—depends entirely on the specific I/O module and the terminal board (e.g., SED2D) you pair with it.