Overview
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | NFPW441-50 |
| Base Model | NFPW441 |
| Brand | Yokogawa |
| Product Type | AC Input Power Supply Module |
| Series | STARDOM FCN-100 |
| Input Voltage | 100-120 V AC |
| Operating Temp | 0 to 55 deg C |
| Storage and Transportation Temp | -40 to 85 deg C |
| Operating Humidity | 5 to 95 %RH, non-condensing |
| Protection Class | IP20 |
| Corrosive Gas Resistance | ANSI/ISA S71.04 Class G2 standard; Class G3 option |
| Vibration Resistance | 0.15 mm peak-to-peak at 5-58 Hz; 1 G at 58-150 Hz |
| Shock Resistance | 15 G, 11 ms, during power-off |
| Maximum Operating Altitude | 2000 m |
| Cooling | The FCN-100 platform is described as using low-heat-dissipation design without a fan |
Environmental values are taken from the supplied FCN-100 system specifications. Confirm the module-specific ratings in the applicable Yokogawa hardware manual before installation.
AC Power Input and FCN-100 System Configuration
The NFPW441 is listed as a power supply module for the FCN-100 modular controller. The controller architecture includes a base module, power supply module, CPU module, and I/O modules. An SB bus repeat module can extend the local bus to an expansion unit.
The FCN-100 platform supports duplex configurations for specified components, including the power supply module, CPU, SB bus, and control network. The platform also supports hot-swappable modules; however, the permitted replacement procedure and operating conditions must be verified in the hardware manual for the specific configuration.
The supplied model matrix identifies the following suffix options:
- -5: Standard type without explosion protection.
- -E: Standard type with explosion protection.
- 0: Basic type.
- 1: ISA Standard G3 option.
The exact suffix combination and applicable certifications should be confirmed against the complete ordering code.
Frequently Asked Questions
Q: What input voltage does the NFPW441-50 accept?
A: The supplied model description specifies a nominal input voltage of 100-120 V AC. Output voltage, rated current, and maximum power consumption are not provided.
Q: Can the NFPW441-50 operate in a duplexed FCN-100 configuration?
A: The FCN-100 platform supports duplexed power supply configurations. Confirm the required module pairing, base module compatibility, and redundancy arrangement in the applicable Yokogawa documentation.
Q: Is the NFPW441-50 hot-swappable?
A: The supplied system description states that FCN-100 modules support hot swapping. Verify the specific power supply replacement procedure and operating restrictions before removing or inserting the module.
Field Installation Guidelines
- Verify the input supply: Confirm that the AC source matches the specified 100-120 V AC input range and the terminal requirements in the manufacturer’s wiring documentation.
- Check model compatibility: Verify the full model code, suffix options, base module, and FCN-100 configuration before installation.
- Inspect the installation environment: Check ambient temperature, humidity, ventilation, and corrosive gas conditions against the applicable module and system specifications.
- Follow grounding requirements: Connect protective and functional grounding according to the manufacturer’s wiring diagram and the electrical standards applicable at the installation site.
- Separate power and signal wiring: Route AC power conductors separately from low-level analog signals and communication cables where practical. Follow the cabinet design and EMC requirements.
- Observe replacement procedures: Isolate power or follow the approved hot-swap procedure as specified in the hardware manual. Do not assume that hot swapping is permitted under every operating condition.
- Verify operation: After installation, inspect wiring and module seating, then confirm power status and controller diagnostics using the documented commissioning procedure.
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