Yokogawa DCS NFAR181-S50/R8S10 | Redundant ER Bus Node

Yokogawa NFAR181-S50/R8S10 ER Bus Interface Node Unit 19-Inch Rack

Product Description

The NFAR181-S50/R8S10 (NFAR181) is a high-performance ER Bus Interface Node Unit designed for Yokogawa’s CENTUM VP and ProSafe-RS control systems. Acting as a critical remote I/O node, it facilitates seamless communication between field instrumentation and the Field Control Unit (FCU) over the extended ER bus architecture. This unit is essential for distributed process control where I/O density and distance require a localized, high-reliability interface.

The NFAR181-S50/R8S10 (NFAR181) is engineered to support both single and dual-redundant configurations, providing fault-tolerant operation in mission-critical environments. It integrates an internal power distribution backplane and bus communication interfaces, allowing for the modular installation of various FIO (Field Input/Output) modules. With its standard 19-inch rackmount footprint, it is specifically built for the harsh electrical and environmental conditions found in upstream oil and gas, petrochemical processing, and heavy power generation.

Detailed Technical Specifications

The NFAR181-S50/R8S10 (NFAR181) provides a robust platform for remote signal management:

• Manufacturer: Yokogawa

• Model Number: NFAR181-S50/R8S10

• Product Type: ER Bus Interface Node Unit (Remote Node)

• System Compatibility: CENTUM VP, ProSafe-RS (FIO Architecture)

• Bus Protocol: ER Bus (Extended Remote Bus)

• Configuration: Single or Dual-Redundant (Interface & Power)

• Module Slots: Supports multiple FIO I/O modules (Analog, Digital, Pulse)

• Input Voltage: 24 V DC nominal (Range: 20.4 to 28.8 V DC)

• Mounting: 19-inch EIA Standard Rackmount

• Operating Temperature: -10 °C to +55 °C (14 °F to 131 °F)

• Humidity Range: 5% to 95% RH (non-condensing)

• Vibration Resistance: 0.5 mm P-P (5 to 14 Hz), 3.92 m/s² (14 to 150 Hz)

• Dimensions: 482.6 mm × 221.5 mm × 205 mm

• Weight: 10 kg (fully loaded)

• Certifications: CE, TÜV (SIL 3 System Compatible), UL, CSA

• Country of Origin: Japan