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          Certified Yokogawa power distribution hardware is provided by Apter Power, offering reliable electrical infrastructure components designed for seamless DCS reliability.

        NFPW442-10 S2

        / 4.9
        1001 reviews ｜ Need a Specific Revision?
        Yokogawa NFPW442-10 S2 is a 220–240 V AC power supply module that provides +5.1 V DC system power and distributes 24 V DC analog field power for FCN-500 installations.
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
        Shipping Mode
        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
        Parts Availability
        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
        We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online. If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.

        Technical specifications for NFPW442-10 S2

        • Manufacturer:
          Yokogawa
        • Part Number:
          NFPW442-10 S2
        • Product Family:
          Centum CS-Centum VP
        • Product Type:
          Power Supply Module
        • Stock:
          1
        • Rated input voltage:
          220 to 240 V AC
        • Input voltage range:
          170 to 264 V AC (rms)
        • Input frequency:
          47 to 66 Hz (Rating: 50/60 Hz)
        • Input current:
          Max. 0.7 A
        • Fuse rating:
          3.15 A
        • Rush current:
          Max. 90 A for 5 ms or less
        • Leak current:
          Max. 1 mA
        • Withstanding voltage:
          3000 V AC for 1 minute
        • Insulation resistance:
          50 MΩ at 500 V DC
        • Insensitive momentary power-failure time:
          10 ms (80%)
        • Rated output voltage:
          +5.1 V DC
        • Rated output current:
          0 to 7.8 A
        • Peak current:
          11.8 A
        • Total output:
          40 W (60 W peak)
        • Startup time after power-on:
          Max. 300 ms
        • Overvoltage protection:
          Max. 7 V
        • Overcurrent protection:
          Min. 105% (shutdown after 4 to 14 seconds long overcurrent)
        • Analog field power supply Input Rated input voltage:
          24 V DC ±10%
        • Analog field power supply Input Input current:
          Max. 4 A
        • Analog field power supply Input Fuse rating:
          6.3 A
        • Analog field power supply Output Rated output voltage:
          Input voltage minus matching-diode drop
        • Analog field power supply Output Rated output current:
          4 A
        • Analog field power supply Output Overvoltage protection:
          35 V
        • Duplex configuration:
          Possible (when installed on base module NFBU200)
        • Hot-Swap:
          Possible
        • LED:
          SYS (5 V system power output ON), FLD (24 V field power supply ON)
        • Checking terminals:
          + 5 V, + 24 V
        • Temperature [°C]:
          0 to +55
        • Altitude [m]:
          2000
        • Weight:
          0.6 kg
        • Estimated shipping dimensions:
          5x14.5x13cm
        • Tariff Code:
          8480719090
        • Country of origin:
          Japan
        • Place of shipment:
          Xiamen, Fujian, China
        By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

        More Information

        Overview Manuals Specifications Installation Operation Application Scenarios

        Features:

        • Provides regulated +5.1 V DC system power together with a separate 24 V DC analog field power path for controller and field-side requirements.
        • Incorporates input fusing, high-voltage isolation, insulation resistance, overvoltage protection, delayed overcurrent shutdown, and brief power-interruption tolerance.
        • Supports duplex installation on the NFBU200 base module, hot-swap replacement, front status LEDs, and dedicated +5 V and +24 V checking terminals.
        Modern distributed control systems depend on a stable power source to maintain uninterrupted communication, data processing, and field device operation. Yokogawa NFPW442-10 S2 serves as an important power component within the FCN-500 platform by supporting both controller electronics and external analog field circuits. A dependable power module helps minimize unexpected shutdowns and contributes to long-term system availability in continuous industrial processes.

        Industrial facilities such as oil and gas plants, chemical processing units, power generation stations, and water treatment systems often operate around the clock, making reliable power distribution essential. Yokogawa NFPW442-10 S2 supports these demanding environments by providing consistent power for control hardware while allowing duplex installation for applications where higher system availability is required. Hot-swap capability also simplifies scheduled maintenance and reduces service interruptions during module replacement.

        Routine maintenance and future system expansion become easier when the power supply offers convenient monitoring features. Yokogawa NFPW442-10 S2 includes dedicated status indicators and voltage checking terminals that help technicians quickly verify operating conditions during commissioning or troubleshooting. Compatibility with the FCN-500 platform allows the module to integrate naturally into existing Yokogawa control architectures while supporting dependable long-term plant operation.

        The NFPW442-10 S2 Yokogawa Power Supply Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
        Yokogawa NFPW442-10 S2 Power Supply Module Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        Yokogawa NFPW442-10 S2 Power Supply Module Specs

        General

        • Manufacturer Yokogawa
        • Model NFPW442-10 S2
        • Condition New Original ready stock
        • Product Family NFPW442-51 S2,NFPW442-50 S2,NFPW442-11 S2
        Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        • Preparation: Disconnect the main system power supply to ensure personnel and equipment safety.
        • Rail Insertion: Vertically align the CENTUM rack and push the module into the bottom along the rails.
        • Screw Fixing: Tighten the screws on both sides of the front panel to prevent poor contact due to cabinet vibration.
        • Wiring Specifications: Strictly distinguish between L/N/G terminals and use flame-retardant copper wires of the recommended gauge.
        • Grounding Confirmation: Ensure the grounding resistance is less than 100Ω to improve power supply anti-interference capability.
        • Power-on Sequence: First check that the external input voltage meets the requirements before closing the air circuit breaker.
        • Status Observation: Confirm that the STATUS indicator light is constantly green, indicating that the module's internal output is completely normal.
        • Redundancy Test: Disconnect one of the dual inputs to verify the redundancy-free switching function.
        • Temperature Rise Monitoring: Use an infrared thermometer to measure the surface temperature to ensure that the casing temperature is within the safe range.
        • Regular Dust Removal: Clean the heat dissipation holes every six months to prevent dust accumulation and overheating of internal components.
        • Oil Refining: Powers the DCS control base to ensure continuous and stable operation of crude oil distillation units.
        • Large Power Plants: Integrated into the turbine control system to provide highly reliable dual-redundant power.
        • Metallurgical Blast Furnaces: Provides power to field I/O acquisition units in harsh environments with high temperatures and high dust levels.
        • Pharmaceutical Workshops: Used for batch processing control of ingredients to ensure complete preservation of production data during power outages.
        Description
        Reliable power conversion is the primary role of Yokogawa NFPW442-10 S2 in an FCN-500 control system. The module connects to a rated 220 to 240 V AC source while accepting variations from 170 to 264 V AC rms, allowing stable operation under normal industrial supply fluctuations. Compatibility with both 50 Hz and 60 Hz networks is provided through an operating frequency range of 47 to 66 Hz. Under normal input conditions, current consumption remains within 0.7 A, making the module suitable for continuous installation in industrial controller cabinets.

        After AC power enters Yokogawa NFPW442-10 S2, the module produces a regulated +5.1 V DC supply for the system electronics. Continuous load current can range from 0 to 7.8 A, while short-duration demand can reach a peak of 11.8 A. The available system output is 40 W during rated operation and can rise to 60 W during peak demand. Power becomes available within 300 ms after startup, and a 10 ms momentary power interruption at 80% does not immediately interrupt the output, helping the controller remain stable during brief disturbances.

        Electrical protection is built into NFPW442-10 S2 to reduce the effect of abnormal supply and load conditions. The AC input uses a 3.15 A fuse and can experience a startup rush current of up to 90 A for no more than 5 ms. Leakage current remains below 1 mA, while insulation performance includes a withstand rating of 3000 V AC for one minute and an insulation resistance of 50 MΩ at 500 V DC. On the system output side, voltage is restricted to a maximum of 7 V, and sustained current above at least 105% of the rated level causes shutdown after approximately 4 to 14 seconds.

        Analog instruments can receive field power through a separate 24 V DC path within Yokogawa NFPW442-10 S2. The field input accepts 24 V DC ±10%, draws no more than 4 A, and is protected by a 6.3 A fuse. Output voltage follows the incoming field voltage after the matching-diode voltage drop, with a rated output current of 4 A and overvoltage protection at 35 V. Duplex installation becomes possible when the module is fitted to an NFBU200 base module, and hot-swap capability supports replacement during maintenance. SYS and FLD LEDs show the condition of the +5 V system output and 24 V field supply, while dedicated +5 V and +24 V checking terminals allow direct voltage measurement. Operation is supported from 0°C to +55°C at altitudes up to 2000 m. FCN-500 systems can use NFPW441, NFPW442, or NFPW444 power modules, whereas NFPW426 is intended for FCN-RTU and cannot be installed in FCN-500.
        Alternative Names
        NFPW442-1O S2 NFPW442-I0 S2 NFPW44210 S2 NFPW442-51 S2 NFPW442-50 S2 NFPW442-11 S2 NFAI141-S00 S2 NFAP135-S00 S2
        Technical notes
        Engineered for long-term operational sustainability, the Yokogawa NFPW442-10 S2 power supply module maximizes panel space with its compact, hot-swappable form factor. It reduces lifecycle maintenance costs by featuring diagnostic indicators that provide real-time status monitoring, ensuring your plant's control infrastructure suffers zero downtime during routine replacements.
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        FAQS

        The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
        VIEW ALL FAQS
        What type of AC source can NFPW442-10 S2 accept?
        NFPW442-10 S2 operates from a rated 220 to 240 V AC supply and remains functional across an input range of 170 to 264 V AC rms. Supported frequency extends from 47 to 66 Hz for 50 Hz and 60 Hz networks.
        How much controller power does NFPW442-10 S2 deliver?
        A regulated +5.1 V DC output supplies up to 7.8 A during continuous operation. Short peak demand can reach 11.8 A, corresponding to 40 W rated output and 60 W peak output.
        Can NFPW442-10 S2 continue operating during a brief power interruption?
        Yes. NFPW442-10 S2 provides a momentary power-failure tolerance of 10 ms at 80%, helping prevent immediate controller shutdown during a short AC disturbance.
        Does NFPW442-10 S2 provide power for analog field devices?
        Yes. A separate field-power circuit accepts 24 V DC ±10% and supplies up to 4 A after the matching-diode voltage drop. Field overvoltage protection is set at 35 V.
        What maintenance information does NFPW442-10 S2 provide?
        SYS and FLD LEDs indicate the operating status of the +5 V system output and 24 V field supply. Maintenance personnel can also measure both voltages through the +5 V and +24 V checking terminals.

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