Yokogawa NFPW444-50 Product Specification
1. Product Overview
The Yokogawa NFPW444-50 is a high-performance process controller module designed for Yokogawa’s CENTUM VP distributed control system (DCS). As a core processing unit in industrial automation, it executes complex control algorithms (such as PID, cascade, and ratio control) to regulate process variables like pressure, temperature, flow, and level. Widely applied in oil & gas, petrochemical, and power generation industries, this module ensures precise and stable process control, supporting efficient production and compliance with quality standards.
Compliant with international standards including IEC 61508 (SIL 2) and IEC 61010, the NFPW444-50 features a fault-tolerant design, high processing efficiency, and robust environmental adaptability. It maintains reliable performance in harsh industrial conditions with electromagnetic interference, temperature fluctuations, and voltage surges, meeting the stringent requirements of critical process control systems.
2. Technical Parameters & Specifications
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Category
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Details
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Product Model
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Yokogawa NFPW444-50
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Product Type
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Process Controller Module (SIL 2 Certified)
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Compatible Systems
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Yokogawa CENTUM VP DCS
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Processing Capacity
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Up to 128 Control Loops; 1 ms Control Cycle
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Supported Control Algorithms
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PID, Cascade, Ratio, Feedforward, Fuzzy Control
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I/O Interface
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Compatible with Yokogawa I/O Modules (AI/AO/DI/DO); Vnet/IP Communication
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Memory
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RAM: 2 GB; Flash: 8 GB (for Program & Data Storage)
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Redundancy
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1+1 Hot Standby Redundancy Support
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Power Supply
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5 V DC ±5% (from CENTUM VP Backplane); Power Consumption: ≤35 W
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Environmental Ratings
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Operating Temp: 0°C–60°C; Humidity: 5%–95% (Non-Condensing); Vibration: ≤1.5 g
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Certifications
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IEC 61508 (SIL 2); IEC 61010; UL 508; CE; RoHS
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3. Key Features
3.1 High-Precision Process Control
With a 1 ms control cycle and support for advanced algorithms like feedforward and fuzzy control, the NFPW444-50 ensures precise regulation of process variables. It minimizes overshoot and steady-state error, even in dynamic processes with frequent load changes—critical for applications like petrochemical reactor temperature control.
3.2 SIL 2 Safety & Redundancy
Certified for SIL 2 operation, the module supports 1+1 hot standby redundancy. Automatic switchover (≤10 ms) between active and standby units ensures uninterrupted control, eliminating single points of failure and enhancing system reliability in safety-related applications.
3.3 Large-Scale Control Capacity
Capable of handling up to 128 control loops, the module is suitable for large-scale industrial facilities like refineries and power plants. Its 2 GB RAM and 8 GB flash memory provide ample space for complex control programs and historical process data, supporting comprehensive process management.
3.4 Seamless DCS Integration
Optimized for Yokogawa’s CENTUM VP DCS, the module integrates seamlessly with Yokogawa’s I/O modules and communication networks via Vnet/IP. It supports plug-and-play installation and automatic parameter synchronization, simplifying system configuration and reducing deployment time.
4. Related Yokogawa Products
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Yokogawa NFPW441-50: Entry-level process controller (64 control loops), cost-effective for small-scale automation projects.
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Yokogawa AI800: 8-channel analog input module, transmitting process data to NFPW444-50 for control logic execution.
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Yokogawa AO800: 8-channel analog output module, receiving control commands from NFPW444-50 to drive field actuators.
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Yokogawa NFCP502-W15: Communication module, enabling NFPW444-50 to exchange data with upper-level monitoring systems.
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Yokogawa CENTUM VP HMI (V-SFT): Human-machine interface software, facilitating parameter setting and status monitoring for NFPW444-50.
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