Woodward 9907-076

Woodward 9907-076 is a 24 V DC power supply module specifically designed for industrial automation systems. It belongs to the Woodward NetCon series of power supplies. This product accepts an input of 88-132 VAC and delivers an output of 24 V DC with a rated current of 16 A, making it suitable for low-voltage DC power supply needs in various industrial sites.

1. Key Specifications

Specification	Details
Input Voltage	88 – 132 VAC
Input Frequency	50 / 60 Hz
Output Voltage	24 V DC
Rated Output Current	16 A
Output Power	≈ 384 W
Operating Temperature Range	–40 °C ~ +85 °C
Protection Class	IP20 (for indoor use)
Dimension/Weight	Typically 19-inch rack-mount design, weighing approximately 1.5 kg (specific dimensions depend on the supplier)
Certifications	CE, UL, ISO 9001

2. Product Features

• High Reliability: Equipped with a fully enclosed metal housing and high-quality components, enabling long-term operation in harsh industrial environments.
• Wide Input Range: The wide input voltage range of 88-132 VAC ensures compatibility with different global power grid standards.
• Overload/Overvoltage Protection: Built-in multiple protection functions to prevent abnormal conditions such as short circuits, overloads, and overvoltages.
• Modular Design: Features a 19-inch rack-mount structure, facilitating quick plugging, unplugging, and replacement in cabinets.
• Low Standby Power Consumption: Low standby power consumption improves the overall energy efficiency of the system.
• Easy Monitoring: Comes with status indicator lights for direct observation of the power supply’s operating status. Some models support remote monitoring interfaces (e.g., Modbus / CAN).

3. Structure and Composition

• Input Filtering/Rectification Unit: Filters and rectifies the AC input, and provides voltage stabilization.
• Power Conversion Module: Adopts switching power supply technology to achieve efficient AC-DC conversion.
• Output Voltage Stabilization/Current Limiting Circuit: Ensures stable 24 V DC output voltage and limits the maximum current.
• Protection Circuit: Includes overvoltage, overcurrent, short-circuit, and overtemperature protection.
• Indicator Lights and Terminal Blocks: The front panel is equipped with power indicator lights, and the rear is fitted with standard bolt-type terminal blocks.
• Rack Mounting Frame: Complies with the 19-inch rack standard, allowing easy fixation inside control cabinets.

4. Application Fields

• Industrial Automation Control Cabinets: Powers low-voltage DC devices such as PLCs, HMIs, frequency converters, and servo drives.
• Power Generation and Distribution Systems: Provides stabilized DC power in generator set control systems.
• Marine and Offshore Platforms: Meets the demand for reliable low-voltage power in marine engineering (complies with anti-corrosion requirements).
• Petroleum, Chemical, and Metallurgical Industries: Serves as a key power support in process control systems.
• Renewable Energy Systems: Supplies power to the control units of wind power and photovoltaic inverters.

5. Installation and Maintenance Guidelines

Step	Key Points
On-site Inspection	Ensure the cabinet has good ventilation and the ambient temperature is within the operating range. Verify that the input voltage of the power supply meets 88-132 VAC.
Mechanical Installation	Fix it according to the 19-inch rack standard using bolts for stability. Leave sufficient heat dissipation space at the front and rear ends.
Electrical Wiring	Use three-phase or single-phase wiring on the input side and ensure correct phase sequence. Use cables with appropriate cross-sections on the output side to avoid current overload.
Grounding	Ensure reliable grounding to prevent electric leakage and electromagnetic interference.
Commissioning	After power-on, check the indicator lights. Use a multimeter to confirm that the 24 V DC output voltage matches the rated value. Test the protection functions (e.g., short-circuit test) to ensure they work properly.
Routine Maintenance	Regularly check if the terminal blocks are loose or corroded. Remove dust inside the cabinet and keep the heat dissipation holes unobstructed. Conduct a functional self-test every 12 months to verify the sensitivity of the protection circuit.
Troubleshooting	If the indicator light goes out or the output voltage is abnormal, first check the input power supply and wiring. If the issue persists, refer to the product manual for internal module replacement or contact an authorized service provider.

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