The YOKOGAWA NFCP100-S05 (Style S3) is a legacy Field Control CPU Module designed for the CENTUM CS 3000 and earlier CENTUM VP Distributed Control Systems (DCS). As the primary processor for the Field Control Station (FCS), it is responsible for executing regulatory control, sequence control, and sophisticated arithmetic calculations. The “S05” designation typically indicates a specific memory and functional configuration, while the “S3” style code represents the hardware revision level. Known for its high reliability and long service life, the NFCP100-S05 remains a critical component in many established industrial control infrastructures.
Technical Specifications
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Model Number: NFCP100-S05
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Style Code: S3
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Manufacturer: Yokogawa Electric Corporation
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System Compatibility: CENTUM CS 3000 / CENTUM VP
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Processor Architecture: 32-bit Industrial Microprocessor
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Redundancy: Supports Dual-Redundant (Duplex) configuration
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Vnet/IP Compatibility: Interface via associated Vnet cards
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Memory Protection: ECC (Error Correction Code) support
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Dimensions: 13.0 cm x 4.2 cm x 25.0 cm
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Weight: 0.72 kg
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Country of Origin: Japan
Applications
The NFCP100-S05 is widely used in continuous process industries such as chemical manufacturing, oil refineries, and large-scale power plants. It is capable of managing thousands of function blocks, making it suitable for complex plant-wide automation tasks including boiler control, distillation column management, and reactor safety monitoring. Its robust design allows it to operate reliably in control room environments where downtime is not an option.
Operating Instructions
The NFCP100-S05 must be installed in the dedicated CPU slots of a Yokogawa FCS base unit. Before installation, confirm the hardware address settings on the module’s side dip switches match the system configuration. When used in a redundant pair, ensure both modules share the same model and style suffix to maintain synchronization. Insert the module firmly into the backplane and engage the locking levers. Initialization and control logic loading are performed through the Yokogawa System View software. Always check the “HRDY” (Hardware Ready) and “CTRL” (Control) LEDs on the front panel to confirm successful boot-up and transition to active status.
Frequently Asked Questions
Q: What is the difference between the NFCP100 and the newer NFCP501? A: The NFCP100 is an earlier generation CPU module. While it performs similar logic functions, the NFCP501 offers faster processing speeds, larger memory capacity, and is optimized for more modern Vnet/IP communication standards used in the latest CENTUM VP releases.
Q: Can an S3 style module replace an older S1 style module? A: In most cases, the S3 is backward compatible with earlier styles of the NFCP100. However, if the module is part of a redundant pair, it is highly recommended that both CPUs are of the same Style code to ensure consistent timing and communication performance.
Q: What should I do if the “FAIL” LED illuminates? A: A red “FAIL” LED indicates a hardware diagnostic error. Attempt a module reset; if the light persists, the module likely has an internal memory or processor fault and should be replaced. Check the FCS maintenance logs for specific error codes before removal.
Recommended Similar Models
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YOKOGAWA NFCP100-S00 (Base Memory Variant)
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YOKOGAWA PW401 (Power Supply Module)
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YOKOGAWA VI701 (Vnet Interface Card)
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YOKOGAWA AFV10D (Duplexed Field Control Unit)
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YOKOGAWA ALE111 (Ethernet Communication Module)
