Woodward 5461-644

The Woodward 5461-644 is an analog output (4-20 mA) module belonging to the Woodward 5461 series. It also integrates an H-type circuit breaker function, and is commonly used in industrial process control systems to provide current signal output and achieve overcurrent protection. Within Woodward’s PLC, DCS, and discrete I/O product lines, this module is categorized as an “H Circuit Breaker” model.

Main Technical Specifications

• Output Type: Analog current output, 4 mA ~ 20 mA
• Voltage Range: 24 V DC (typical power supply)
• Communication Interface: Supports Modbus/RS-485 (consistent with other Woodward I/O modules)
• Operating Temperature: -10 °C ~ 60 °C (some documents mark it as -40 °C ~ 85 °C)
• Protection Level: IP65, aluminum alloy housing, suitable for harsh industrial environments
• Dimensions: Approximately 120 mm × 80 mm × 40 mm (refer to specifications of similar modules)

Product Features

• High Reliability: The metal housing and IP65 protection ensure long-term stable operation in environments with dust, moisture, and other harsh conditions.
• Integrated Circuit Protection: Built-in H-type circuit breaker can automatically cut off power when output current is abnormal, protecting downstream equipment.
• Modular Design: Can be freely combined with discrete input/output, speed input, and communication modules of the Woodward 5461 series, facilitating system expansion.
• Easy Installation: Features standard DIN rail size, supporting wall-mounted or cabinet internal installation. Matching screws and terminal blocks simplify wiring.
• Strong Compatibility: Complies with the Modbus/RS-485 communication protocol, and can be directly connected to Woodward PLC, DCS, or third-party control systems.

Structure and Composition

• Power Input Terminal: 24 V DC interface, equipped with filter capacitor and overvoltage protection.
• Analog Output Circuit: Precision current source chip, providing 4-20 mA programmable output.
• Circuit Breaker Unit: Mechanical H-type circuit breaker, with overcurrent detection circuit of adjustable threshold.
• Communication Interface: RS-485 terminal, supporting Modbus RTU.
• Terminal Blocks: Screw-type terminal blocks, facilitating on-site wiring.

Typical Application Fields

• Process Control: Analog signal output for process variables such as flow rate, pressure, and temperature.
• Power Supply and Distribution: Monitoring and controlling current signals, and providing overcurrent protection.
• Automated Production Lines: Combined with PLC/DCS to realize closed-loop control and safety monitoring.
• Heavy Industries: Providing reliable analog output in high-temperature, humid, or dusty environments, such as petrochemical, metallurgy, and papermaking industries.

Installation and Maintenance Points

1. Installation: Fix using standard DIN rails and ensure the module is placed horizontally. Confirm that the power supply is disconnected before wiring.
2. Wiring: Follow the positive and negative polarity markings on the module for wiring, and connect the output terminal to the load or signal receiver.
3. Configuration: Set the output current range and circuit breaking threshold through Woodward’s supporting configuration software or on-site panel.
4. Regular Inspection: Check the wear of mechanical components of the circuit breaker every 6-12 months, and confirm that the communication link is error-free.
5. Fault Diagnosis: The module is equipped with diagnostic LEDs to indicate abnormalities in power supply, communication, and output. When necessary, Woodward diagnostic tools can be used to read fault codes.

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