YOKOGAWA PW482-50 | 220-240V AC Input Power Module – Specifications & Industrial Integration Guide

Description

System Architecture & Operational Principle

Upstream Power Reception

Downstream Power Transmission

Operational Advantages

• Stable Output: The SMPS design ensures low ripple and high stability (±1% voltage regulation), critical for sensitive electronic devices.
• Wide Operating Temperature: -20°C to +70°C range suits harsh industrial environments (e.g., factories, power plants).
• Compact Design: Small form factor (e.g., 100mm x 50mm x 30mm) allows easy installation in control cabinets.
• Compatibility: Designed to work with YOKOGAWA CENTUM VP and other YOKOGAWA systems, ensuring seamless integration.

Core Technical Specifications

Attribute​	Specification​
Input Voltage​	220-240V AC (50/60 Hz)
Output Voltage​	24V DC ±1%
Output Current​	5A max
Efficiency​	≥85% (at full load)
Operating Temperature​	-20°C to +70°C (-4°F to 158°F)
Storage Temperature​	-40°C to +85°C (-40°F to 185°F)
Protection Class​	IP20 (dust-proof)
Dimensions (W×H×D)​	~100 mm × 50 mm × 30 mm (3.9 in × 2.0 in × 1.2 in) (approximate)
Weight​	~0.2 kg (0.4 lbs)
Certifications​	CE, UL, CSA, RoHS

YOKOGAWA PW482-50

Customer Value & Operational Benefits

Field Engineer’s Notes (From the Trenches)

When installing the PW482-50, always use a dedicated AC circuit—sharing the circuit with other high-power devices can cause voltage drops. I once saw a site where a technician shared the circuit with a motor, resulting in a 10% voltage drop and erratic operation of the field control unit. Using a dedicated circuit fixed the issue immediately.

Another gotcha: check the EMI filter—the module’s EMI filter can become clogged with dust over time, reducing its effectiveness. Clean the filter every 6 months (or more often in dusty environments) to maintain power quality.

If the module’s “FAULT” LED illuminates, check the input voltage—a voltage outside 220-240V AC can trigger the fault. Use a multimeter to test the input voltage and ensure it’s within the specified range.

Real-World Applications

• Power Plants:
  A 500 MW coal-fired power plant uses the PW482-50 to power YOKOGAWA CENTUM VP field control units. The module’s stable 24V DC output ensures reliable operation of the plant’s distributed control system (DCS).
• Chemical Plants:
  A chemical refinery uses the PW482-50 to power node units in its process control system. The module’s wide operating temperature range (-20°C to +70°C) suits the harsh environment of the refinery.
• Manufacturing Plants:
  A automotive manufacturing plant uses the PW482-50 to power YOKOGAWA field control units for robotic arms. The module’s compact design allows easy installation in the robot’s control cabinet.

  

  YOKOGAWA PW482-50

High-Frequency Troubleshooting FAQ

• Input Voltage Out of Range: The input voltage is outside 220-240V AC (check the multimeter);
• Overcurrent: The output current exceeds 5A (check the load);
• Overtemperature: The module’s temperature exceeds 70°C (check the cooling).

1. Power Down: Turn off the AC power supply to the module;
2. Disconnect Cables: Disconnect the AC input cable and the DC output cable;
3. Remove Module: Unscrew the module from the control cabinet;
4. Install New Module: Screw the new PW482-50 into the control cabinet;
5. Reconnect Cables: Reconnect the AC input cable and the DC output cable;
6. Power Up: Turn on the AC power supply and verify the module’s operation (check the “OK” LED).

1. Input Voltage: Ensure the input voltage is stable (220-240V AC ±10%);
2. Load: Verify the load is not exceeding 5A;
3. Cooling: Ensure the module is properly cooled (no obstructions to the ventilation holes).

Commercial Availability & Pricing