1. Product Overview

2. Technical Specifications

• Model Number: 405A616H01

• Manufacturer: Westinghouse / Emerson

• Compatible Systems: Ovation™ DCS, WDPF DCS

• Module Type: Rack‑mounted, plug‑in DC power supply

• Input Voltage: 100–240 VAC, 50/60 Hz (wide‑range, auto‑sensing)

• Input Current: 8 A (max)

• Output Voltage: 24 VDC (main), 24 VDC (auxiliary)

• Output Current: 12 A (main), 8 A (auxiliary)

• Hot‑Swap Capability: Yes (online replacement without system shutdown)

• Redundancy: Supports 1+1 redundant operation (diode‑or’d)

• Isolation: Input‑output isolation, channel‑to‑channel isolation

• Dimensions (H × W × D): ~13.3 cm × 44.5 cm × 25.4 cm

• Weight: ~1.8 kg

• Operating Temperature: 0 °C to 50 °C

• Relative Humidity: 5%–95%, non‑condensing

• Protection Features: Overvoltage, overcurrent, short‑circuit, overtemperature, fan failure

• Environmental: Conformal coating, EMI filtering, LED status indicators

• MTBF: > 500,000 hours (typical)

3. Features

• Wide‑Range AC Input: Accepts 100–240 VAC for global deployment.

• Dual 24 VDC Outputs: Separate main and auxiliary outputs for controllers and I/O modules.

• Hot‑Swap & Redundancy: Replace units online; 1+1 redundancy eliminates single points of failure.

• High Efficiency: Reduces heat generation, extending service life.

• Comprehensive Protection: Safeguards against overload, short circuit, overvoltage, and overtemperature.

• LED Status Indicators: Clear visual feedback for power OK, fault, and fan status.

• Conformal Coating: Protects against dust, moisture, and corrosive environments.

4. Applications

• Power Generation: Thermal, nuclear, and combined‑cycle power plants (Ovation/WDPF core power).

• Process Industries: Petrochemical, pulp & paper, cement, water treatment (high‑availability control systems).

• Critical Control Chassis: Ovation controller chassis, I/O chassis with high module density.

• Legacy System Upgrades: Direct replacement for older Westinghouse/Emerson power supplies in Ovation/WDPF systems.

5. Installation & Operation Instructions

1. Unpacking: Inspect module for shipping damage; verify model number and accessories.

2. Rack Insertion: Align module with dedicated power slot in Ovation chassis; insert firmly.

3. Securement: Tighten front‑panel screws to secure module.

4. AC Input Connection: Connect 100–240 VAC power to the module’s AC terminal.

5. DC Output Connection: Connect main and auxiliary 24 VDC outputs to controller/I/O chassis.

6. Power‑On Check: Verify POWER OK LED (green) illuminates steadily.

7. Redundancy Setup: Install a second 405A616H01 in the adjacent slot for 1+1 redundancy.

8. Hot‑Swap Procedure: If FAULT LED (red) lights, replace faulty module online during system operation.

6. LED Status Indicators

• Green (POWER OK): Normal operation, DC outputs within voltage/current limits.

• Red (FAULT): Overvoltage, overcurrent, short circuit, overtemperature, or fan failure.

• Yellow (FAN STATUS): On = fan operating normally; Blinking = fan fault.

7. Maintenance & Troubleshooting

Routine Maintenance (Quarterly)

• Check LED status indicators for normal operation.

• Inspect AC/DC connectors for tightness and corrosion.

• Clean ventilation slots with dry, low‑pressure air to prevent overheating.

• Verify fan operation (listen for airflow; check yellow LED).

Safety Precautions

• Disconnect AC power before removing the module.

• Allow internal capacitors to discharge (≥ 5 minutes) before handling.

• Do not open the module housing; no user‑serviceable parts inside.

Fault Diagnosis

• Red FAULT LED ON:

  • Check for overload or short circuit on DC outputs.

  • Ensure ventilation slots are clear; check for blocked airflow.

  • Verify fan operation (yellow LED; listen for fan noise).

• No LEDs Illuminated:

  • Check AC input voltage and connection.

  • Verify chassis power distribution.

• Yellow FAN LED Blinking:

  • Fan failure; replace module.

8. Compatibility & Product Status

• Compatibility: Fully compatible with all Ovation/WDPF controller and I/O chassis; backward‑compatible with earlier Westinghouse power supply models.

• Status: Obsolete legacy part; available as New Old Stock (NOS) or Factory‑RefurbishedEmerson.

• Certifications: CE, UL, CSA (compliant with industrial control system standards).

9. Warranty & Support

• Warranty: 12‑month standard warranty (refurbished units); 24‑month warranty (new NOS units).

• Technical Support: Emerson technical support available for installation, configuration, and troubleshooting.

• Spare Parts: Limited inventory available; contact authorized Emerson distributors for replacement units.