TheYokogawa PW484-50is a high-reliability DC-to-DC Power Supply Module designed for use in the CENTUM VP and CENTUM CS 3000 Distributed Control Systems (DCS). Unlike the PW481 or PW482 series which use AC mains, the PW484 is specifically designed for facilities that utilize a 24 VDC primary power distribution system.
Specifications
Model Number:PW484-50
Input Voltage:24 VDC.
Input Voltage Range:19.2 to 31.2 VDC.
Operating Temperature:-20 °C to 70 °C (-4 °F to 158 °F).
Environmental Protection:ISA Standard G3 conformal coating.
Power Consumption:Approximately 120 W (at maximum load).
Compatibility:Used in AFV10, ANB10, and ANT10 series Field Control Stations and node units.
Shipping Weight:2.0 kg.
Features
DC Input Architecture:Ideal for telecommunications-grade or battery-backed industrial sites where a stable 24 VDC bus is the primary power source.
G3 Corrosion Resistance:The module's internal components are protected by a specialized conformal coating, allowing it to operate safely in environments with high concentrations of corrosive gases (Severity Level G3).
High-Availability Redundancy:When two PW484-50 modules are installed in a redundant baseplate, they operate in parallel. If one unit fails or loses its input feed, the other takes over the full system load instantly without any "bump" to the control process.
Extreme Thermal Rating:Designed to function in harsh outdoor or unconditioned cabinets, maintaining stable output from sub-zero arctic conditions up to high tropical heat.
System Integration:Provides real-time status feedback to the DCS. Operators can monitor the health of the power supply and receive alarms for "Input Voltage Low" or internal hardware faults.
Hot-Swappable:Can be replaced while the system is live (following standard safety protocols), ensuring that maintenance does not require a plant shutdown.
