YOKOGAWA NFCP502-W05 S1 FCN-500 CPU Module

Product Description

The YOKOGAWA NFCP502-W05 S1, also cataloged as the NFCP502 FCN CPU Module, operates as a dedicated hardware component for deterministic real-time control execution within Yokogawa STARDOM FCN-500 autonomous controller platforms.

Suffix Breakdown & Model Matrix

Hardware Specifications

FCN-500 4-20 mA HART Loop Integration

The NFCP502-W05 S1 supports 4-20 mA HART loop protocol through its SB Bus I/O interface, enabling bidirectional digital communication superimposed on the analog current signal without disrupting the primary measurement value. The module's four Ethernet ports support redundant control network configurations, allowing FOUNDATION Fieldbus and Profibus PA connectivity for distributed field device integration. Channel-to-channel isolation is maintained across the SB Bus backplane to prevent ground loop interference and common-mode noise propagation from field transmitters.

Frequently Asked Questions

Q: What is the maximum hot-swap recovery time when replacing a failed CPU module in a redundant configuration?

A: The dual-CPU hot-standby redundancy architecture supports hardware switchover times of 50 ms or less. The replacement module synchronizes its static RAM state from the active twin, and control execution resumes without process interruption once the SB Bus handshake completes.

Q: Does the module support firmware flash compatibility across different S-style hardware revisions?

A: Firmware images are bound to the S-style hardware generation. An S1 module requires S1-compatible firmware binaries. Attempting to flash S0 firmware onto an S1 module will result in a checksum validation failure during the bootloader handshaking phase.

Q: What is the SD card write endurance consideration for data logging applications?

A: The SDHC slot supports Class 10 cards (4 GB to 32 GB). For continuous high-frequency data logging, industrial-grade SLC (Single-Level Cell) SD cards are recommended over MLC (Multi-Level Cell) consumer cards to avoid write-cycle exhaustion within the 5-year typical deployment window.

Field Installation Guidelines

• Verify the base rack supplies 5 V DC +/- 5% before inserting the module. Current draw peaks at 1700 mA during initial boot; ensure the rack power supply headroom accommodates this transient load.
• The module is fanless and relies on passive convection. Maintain minimum 25 mm clearance on all sides within the cabinet to prevent thermal accumulation.
• For redundant configurations, both CPU modules must share identical S-style revision codes. Mismatched S1 and S2 pairings will prevent synchronization.
• RS-232-C serial port wiring must use shielded twisted pair with the shield terminated at the controller chassis ground to suppress EMI from adjacent power conductors.
• Battery-backed SRAM retention requires the base rack to maintain 5 V DC standby power. If the rack loses power entirely, the 700 KB retention buffer will persist only while the onboard battery remains charged (typical service life: 5 years).
• Corrosive atmosphere installations must comply with ANSI/ISA S71.04 Class G2 exposure limits. Install the module in a properly sealed enclosure if the site exceeds G2 gas concentration thresholds.

Other Attributes

• Country of Origin: Japan/Singapore
• Lead Time: In Stock, 2 Working Days

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