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Match the complete marking
Include the complete Yokogawa NFCP501-W15 S2 marking and any revision or assembly number visible on the item. Keep the W15 selection, S2 style and system software version in the review.
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Check the offered item before ordering
Request available label and connector photos. Have your maintenance team compare the offered NFCP501-W15 S2 with the installed equipment and applicable Yokogawa documentation.
Technical specifications for NFCP501-W15 S2
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Manufacturer:Yokogawa
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Product Category:DCS Systems
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Spare Part Number:NFCP501-W15 S2
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Weight:0.9 kg
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Tariff Code:8537101190
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Processor:Atom E3815; 1.46 GHz
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Main memory:256 MB with ECC
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Retained SRAM:2 MB with ECC; battery backed
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Onboard flash:1 GB
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Removable media:SDHC 4–32 GB; Class 10
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Ethernet ports:2 × RJ45
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Ethernet rates:10 / 100 / 1000 Mbps
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Serial interface:1 × RS-232-C; D-sub 9-pin male
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Serial rate:0.3–115.2 kbps; selectable
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I/O interface:Duplex SB bus
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Power supply:5 VDC ±5%
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Maximum current:1200 mA
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Temperature option:-20 to +70 °C
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Diagnostics:Watchdog and temperature monitoring
Information
Overview
Downloads
Applications / Compatibility
Product Precautions
- Yokogawa NFCP501-W15 S2 brings controller execution, retained application data and network access into one FCN processor position. The installed configuration can use a single CPU or a matched duplex pair, with different restrictions on the local serial connection.
Processor: Atom E3815 at 1.46 GHz
Memory: 256 MB ECC RAM and 2 MB battery-backed ECC SRAM
Network: Two 10/100/1000 Mbps Ethernet ports
Memory: 256 MB ECC RAM and 2 MB battery-backed ECC SRAM
Network: Two 10/100/1000 Mbps Ethernet ports
The W15 selection combines extended functions, the extended-temperature option and basic non-explosion-protected construction. Style S2 supports the E2 bus interface. CPU execution uses a real-time operating system with IEC 61131-3 programming support and the Duolet virtual-machine environment.
Main memory includes error correction, while battery-backed SRAM retains data and the onboard 1 GB flash provides secondary storage. One SDHC slot accepts 4–32 GB Class 10 media. Watchdog and temperature monitoring support controller diagnostics; CPU, Ethernet, SD and EXEC indicators distinguish operating and maintenance states.
The two RJ45 interfaces support 1000BASE-T, 100BASE-TX and 10BASE-T. One asynchronous RS-232-C port supports software-selected full or half duplex up to 115.2 kbps, but is unavailable when the CPUs are redundant. Duplex CPUs must have the same model, suffix codes and system software version; S1 and S2 styles can be combined under that rule.
Main memory includes error correction, while battery-backed SRAM retains data and the onboard 1 GB flash provides secondary storage. One SDHC slot accepts 4–32 GB Class 10 media. Watchdog and temperature monitoring support controller diagnostics; CPU, Ethernet, SD and EXEC indicators distinguish operating and maintenance states.
The two RJ45 interfaces support 1000BASE-T, 100BASE-TX and 10BASE-T. One asynchronous RS-232-C port supports software-selected full or half duplex up to 115.2 kbps, but is unavailable when the CPUs are redundant. Duplex CPUs must have the same model, suffix codes and system software version; S1 and S2 styles can be combined under that rule.
Controller platform reference: STARDOM FCN-500. Match CPU pairing, software and the installed I/O bus.
The original technical excerpt for Yokogawa NFCP501-W15 S2 covers CPU options, memory, connections and supported base arrangements. The separate installation guide covers application retention, CPU pairing, storage handling and controlled recovery.
NFCP501-W15 S2 Official Technical Excerpt
The original technical excerpt for Yokogawa NFCP501-W15 S2 covers CPU options, memory, connections and supported base arrangements. PDF · 4 pages.NFCP501-W15 S2 Installation & Verification Guide
Apter Power installation and verification guide covering application retention, CPU pairing, storage handling and controlled recovery. PDF · 5 pages.
Original manufacturer pages retain their technical context. Use the Apter Power guide with the applicable manufacturer instructions and approved installation design.
System and supply context: The CPU requires a compatible FCN base, power supply and configured I/O arrangement. A second processor, E2 interface and removable media are separate items unless specified.
Application scope: Apply the extended-function CPU to an FCN-500 control application whose software, network and redundancy settings match the installed system. A CPU module alone does not provide field I/O terminals.
Application scope: Apply the extended-function CPU to an FCN-500 control application whose software, network and redundancy settings match the installed system. A CPU module alone does not provide field I/O terminals.
Duplex control execution
A matched pair provides the supported duplex CPU arrangement while retaining the same model, suffix and software configuration.Ethernet-connected controller
Two RJ45 ports connect the controller to approved plant networks at supported Ethernet speeds.Extended I/O architecture
Style S2 can work with the E2 interface in the appropriate FCN base and extension-unit arrangement.Single-CPU serial integration
A nonredundant CPU can use the RS-232-C port with the configured rate, duplex mode and correct 9-pin connection.
Prepare Yokogawa NFCP501-W15 S2 for its configured installation using these checks.
Preserve the application
Retain the application, network settings and system software version before exchanging the CPU.
Check the pair
For duplex service, match both CPU model and suffix codes rather than relying on the FCN-500 family name.
Respect serial restrictions
Do not plan an RS-232-C application on a redundant CPU pair.
Check the base
Allow the CPU two slots and verify the selected power supply and I/O allocation.
Handle storage correctly
Use suitable Class 10 SDHC media and follow the controller shutdown and access indications.
Verify control recovery
Check CPU ready/control indicators, communications and actual configured I/O response before release.
Alternative Names
NFCP501 W15 S2
Yokogawa NFCP501W15 S2
Technical notes
Engineering relationship: The RS-232-C port is disabled as an application interface in a redundant CPU configuration. Ethernet availability does not remove this serial limitation.
Installation boundary: Use CPUs with matching model, suffix and system software for duplex operation. Style S2 or later is required for E2 bus use; confirm the installed base and expansion arrangement.
Technical basis: Yokogawa FCN Autonomous Controller Hardware (FCN-500), GS 34P02Q14-01E, 23rd edition. NFCP501 S2 specifications and the W15 option matrix apply; duplex serial-port restrictions and the installed base configuration remain part of the application.
FAQ View All FAQ
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Can the serial port on NFCP501-W15 S2 remain in service in a duplex CPU pair?No. The RS-232-C port cannot be used when the CPUs are configured in redundancy. Plan the communication path before enabling duplex operation.
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Which parts of the NFCP501-W15 S2 memory system have error correction?The 256 MB main memory and 2 MB static RAM have ECC. The SRAM is battery backed; the separate onboard flash capacity is 1 GB.
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What storage card can be fitted to NFCP501-W15 S2?The single card slot supports SDHC media from 4 to 32 GB with a Class 10 rating. Media capacity and controller-compatible handling should both be checked.
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Why must the partner CPU match the suffix of NFCP501-W15 S2?Duplex operation requires the same CPU model, suffix codes and system software version. Matching only the NFCP501 base designation does not establish the required pair.
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Does NFCP501-W15 S2 provide two or four Ethernet interfaces?NFCP501 has two RJ45 Ethernet ports supporting 10, 100 and 1000 Mbps. The four-port arrangement belongs to NFCP502.
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How much 5 V supply current must be allowed for NFCP501-W15 S2?Allow a maximum of 1200 mA at 5 VDC ±5% for the NFCP501 CPU. Other base-mounted modules have additional power requirements.
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What does Style S2 enable when NFCP501-W15 S2 is used with E2 bus expansion?NFCP501/NFCP502 Style S2 or later is required for an E2 bus interface module. The base, expansion units and system configuration must also support that arrangement.
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Can NFCP501-W15 S2 use an arbitrary RS-232-C baud rate?No. The selectable rates run from 0.3 to 115.2 kbps in defined steps. Communication is asynchronous, with full or half duplex selected in software; the serial port is restricted to nonredundant CPU operation.
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