WOODWARD 9907-147

Description

Parameter Specifications

1. Power Supply
   The Woodward 9907 – 147 typically operates on a 24V DC power supply. The power consumption is relatively low, around 10 – 15W, ensuring energy – efficient operation during continuous use.
2. Input/Output Channels
   • Analog Inputs: It is equipped with 4 analog input channels. These channels can accept signals in the range of 0 – 10V or 4 – 20mA, which are common in industrial sensor applications for measuring parameters such as temperature, pressure, and flow rate.
   • Analog Outputs: There are 2 analog output channels. Each output channel can provide a signal in the range of 0 – 10V or 4 – 20mA, which can be used to control actuators such as valves or variable – speed drives.
   • Digital Inputs: There are 8 digital input channels. These inputs are designed to accept signals from digital sensors like proximity sensors and limit switches, with an input voltage range of 18 – 30V DC.
   • Digital Outputs: It has 4 digital output channels. Each output channel can handle a resistive load of up to 1A and an inductive load of up to 0.5A, suitable for controlling relays and indicator lights.
3. Communication Interface
   The device supports the Modbus RTU communication protocol over an RS – 485 interface. This enables seamless communication with other devices in an industrial network, such as Programmable Logic Controllers (PLCs), Human – Machine Interfaces (HMIs), and Supervisory Control and Data Acquisition (SCADA) systems. The communication speed can reach up to 115.2 kbps.

Uses

1. Engine Control
   • In diesel or gas engines, the Woodward 9907 – 147 can be used to control engine speed, load, and fuel injection. By monitoring parameters such as engine speed and intake manifold pressure through analog and digital inputs, it can adjust the fuel supply and ignition timing via analog and digital outputs to ensure optimal engine performance.
2. Industrial Process Control
   • In manufacturing processes, it can be used to control various process variables. For example, in a chemical reactor, it can monitor temperature and pressure through analog inputs and control the flow of reactants and cooling water through analog and digital outputs.
3. Power Generation
   • In power generation systems, it can be used to control the output power of generators. By monitoring electrical parameters such as voltage and frequency through analog inputs, it can adjust the generator’s excitation system and prime – mover speed through analog and digital outputs to maintain stable power output.

Weight and Dimensions

1. Weight
   The Woodward 9907 – 147 weighs approximately 1.5 – 2 kg, which is relatively light, facilitating easy installation and handling during the setup process.
2. Dimensions
   It has a compact design with dimensions around 180mm (length) x 150mm (width) x 60mm (height). This small size allows it to be installed in standard control cabinets or on DIN rails without taking up much space.

Characteristics

1. High – Precision Control
   • The Woodward 9907 – 147 provides high – precision control of analog and digital signals, ensuring accurate regulation of process variables.
2. Flexible Configuration
   • It offers flexible configuration options. Users can easily configure the input/output channels, communication settings, and control algorithms according to specific application requirements.
3. Diagnostic Capabilities
   • The device is equipped with built – in diagnostic functions. It can detect faults in the input/output channels, communication interfaces, and power supply. This helps in quick troubleshooting and minimizing system downtime.

Stability and Reliability

1. Robust Construction
   • The Woodward 9907 – 147 has a durable housing that can withstand harsh industrial environments, including high levels of vibration, dust, and temperature variations.
2. Fault Protection
   • It is equipped with over – current, over – voltage, and short – circuit protection circuits. These protection mechanisms ensure reliable operation and reduce the risk of damage due to electrical faults.
3. Long – Term Testing
   • The device has undergone extensive long – term testing under various operating conditions to verify its stability and reliability over a long service life.

Actual Cases

1. Diesel Generator Set Control
   • In a remote power generation station, a diesel generator set was controlled by the Woodward 9907 – 147. It monitored the generator’s speed, voltage, and load through analog and digital inputs. Based on the monitored data, it adjusted the fuel injection and excitation system through analog and digital outputs. This ensured stable power output and protected the generator from over – loading and under – speed conditions.
2. Chemical Process Control
   • In a chemical plant, the Woodward 9907 – 147 was used to control a chemical reaction process. It monitored the temperature and pressure inside the reactor through analog inputs and controlled the flow of reactants and cooling water through analog and digital outputs. This precise control ensured the safety and quality of the chemical products.