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The Woodward 8262-1145 is a servo position control module, belonging to Woodward's servo control system series. It is specially designed for the precise positioning control of servo actuators in industrial engines, turbines, generator sets and fluid control equipment, and is particularly suitable for control scenarios related to diesel engines. Integrating core functions such as proportional/integral (PI) servo position control, LVDT/RVDT sensor excitation and closed-loop feedback regulation, this module features fast response speed, high control precision and strong anti-interference performance. It is compatible with all series of Woodward controllers and mainstream industrial automation systems, and is widely used in energy, petrochemical, marine, power generation, naval, aerospace and other fields. It provides core control support for the precise positioning and stable operation of servo actuators, meets the automation and high-efficiency control requirements of industrial equipment, and at the same time ensures the safety and reliability of equipment operation.
1. Product Attributes
| Attribute | Details |
|---|---|
| Model Number | Woodward 8262-1145 |
| Product Type | Industrial-grade servo position control module, belonging to Woodward's servo control system series. Different from ordinary signal conversion or interface modules, it focuses on the position positioning, closed-loop regulation and status monitoring of servo actuators, and integrates LVDT/RVDT sensor excitation function. As a key core component connecting the control unit and servo actuator in an industrial servo control system, it undertakes the core functions of precise servo position control and feedback regulation. It is adaptable to the servo control needs of various industrial power equipment, and is particularly suitable for diesel engine control scenarios. |
| Core Application | It receives position control instructions from Woodward controllers or DCS/PLC systems and outputs precise control signals to drive servo actuators (such as servo motors and hydraulic servo valves) for position positioning; integrates LVDT/RVDT sensor excitation function to collect position feedback signals of servo mechanisms in real time, and corrects position deviations through proportional/integral closed-loop regulation algorithm to ensure control precision; is equipped with functions such as fault self-diagnosis, overload protection and position limiting, which can quickly trigger alarm and protection actions when abnormal working conditions such as servo mechanism jamming, excessive position deviation and sensor failure are detected to prevent equipment damage, and can cooperate with overspeed protection related logic to assist in ensuring the safe operation of prime movers; supports custom parameter configuration to adapt to different types and ranges of servo actuators and sensors, and can cooperate with load control function to realize shock-free loading and unloading and optimize equipment operation performance. |
| Typical Position | As the core control unit of an industrial servo position control system, it fills the integrated gap of "control instruction - execution positioning - feedback regulation", connecting the front-end control system with the rear-end servo actuators and position sensors. Through precise closed-loop regulation and reliable safety protection, it ensures the accuracy and stability of servo mechanism position control. Cooperating with Woodward controllers, sensors and actuators, it builds a complete industrial servo control link, suitable for servo position control scenarios of industrial engines, turbines, generator sets, fluid control valves and other equipment. It can be used as a core control node in multi-module networking to improve the overall control precision and reliability of the system, and can also be used as a key component of diesel engine control kits. |
2. Technical Specifications
2.1 Control and Detection Parameters
| Parameter Category | Core Indicators | Explanations |
|---|---|---|
| Control Mode | Proportional/Integral (PI) servo position control with closed-loop feedback regulation; optional Proportional-Integral-Derivative (PID) control mode; supports LVDT/RVDT sensor excitation (optional module expansion) | The PI control algorithm can accurately correct the position deviation of the servo mechanism to ensure positioning precision and system stability; the PID control mode is adaptable to scenarios with high-precision positioning requirements; the LVDT/RVDT sensor excitation function can be directly connected to position feedback sensors, simplifying system wiring and module configuration, improving the accuracy of feedback signal collection, and adapting to various position detection scenarios. |
| Position Control Precision | Control precision ≤±0.1% FS (Full Scale), response time ＜50ms, position adjustment resolution ≤0.01mm (for linear servo mechanisms) | The high-precision closed-loop regulation algorithm combined with fast signal response capability can realize precise positioning of servo actuators, effectively suppress position drift, and is suitable for scenarios with high positioning precision requirements such as engine throttles, turbine valves and fluid control valves; the high resolution enables micro position adjustment, meeting the refined control requirements of equipment, and at the same time improving equipment operation efficiency and energy consumption optimization effect. |
| I/O Configuration | 2 channels of 4~20mA analog input (receiving control instructions and feedback signals), 2 channels of 0~10V DC analog output (driving servo actuators); 3 channels of relay output (for fault alarm and position limiting protection); 4 channels of contact input (receiving emergency stop and manual/auto switch signals); optional LVDT/RVDT excitation output (for position sensors) | Analog inputs can directly receive position control instructions from the controller and feedback signals from sensors without additional signal conversion equipment; analog outputs can directly drive servo motors, hydraulic servo valves and other actuators; relay outputs and contact inputs build a comprehensive safety protection system, supporting emergency stop, position limiting, fault alarm and other functions to ensure equipment operation safety, and adapt to the flexible switching between manual and automatic control modes to improve operational convenience. |
| Communication Interfaces | RS-485 interface supporting Modbus protocol; optional Ethernet interface supporting Modbus TCP protocol, adaptable to redundant Ethernet communication (optional) | The RS-485 interface is used for local debugging, parameter configuration and data transmission; the Ethernet interface enables remote linkage with DCS/PLC systems and Woodward controllers, supporting remote parameter configuration, status monitoring and fault troubleshooting, and adapting to distributed servo control scenarios; redundant Ethernet communication can enhance system reliability, avoid control failure caused by communication interruption, adapt to the control requirements of key equipment, and support networking communication with multiple modules to realize collaborative control. |
| Power Supply Requirement | DC 9~30V wide voltage power supply with reverse polarity protection function, power consumption ≤5VA; adaptable to industrial standard DC power supplies, supporting collaborative power supply with the same series of power modules | The wide voltage design is compatible with different power supply specifications in industrial sites and can cope with voltage fluctuation scenarios; the reverse polarity protection function can prevent module damage caused by wiring errors; the low power consumption design does not increase the system's power supply load, and can work with Woodward's same series of power modules to improve power supply stability, adapt to different power supply environments such as engine compartments and industrial cabinets, meet the long-term continuous operation requirements of equipment, and conform to the general power supply standards for industrial equipment. |
2.2 Physical and Installation Specifications
| Parameter Category | Core Indicators | Explanations |
|---|---|---|
| Dimensions & Weight | Compact module design, approx. 11cm×5.5cm×16cm in size, approx. 0.27kg (0.6lb) in weight | Small in size and light in weight, it adopts a Deutsch sealed housing with dual 12-way sealed connectors, suitable for dense installation scenarios in industrial control cabinets. It can be installed in the same cabinet with Woodward controllers, signal modules and power modules without occupying excessive cabinet space; the sealed design can effectively resist the intrusion of dust and water vapor, facilitate cable arrangement and internal cabinet layout, and is also suitable for installation scenarios in engine compartments (excluding engine body installation) to extend the service life of the module. |
| Mounting Method | Standard DIN rail mounting, supporting auxiliary flush mounting in control cabinets, adaptable to installation in engine compartments and industrial cabinets | The installation process is simple and adaptable to the general DIN rail of industrial control cabinets, enabling quick fixation and disassembly for convenient later maintenance and replacement; the wiring terminals adopt a screwless spring-loaded design, accepting 0.08~4mm² wires, which enables convenient and reliable wiring and avoids wiring errors; it is suitable for installation scenarios in engine compartments, can cope with a certain vibration environment to ensure installation stability, and adapt to different cabinet layout requirements to improve installation flexibility. |
| Panel Configuration | Operating status indicator lights, fault alarm indicator lights, position status indicator lights, calibration interface, parameter adjustment DIP switches, communication status indicator lights | The indicator lights intuitively feed back information such as module power supply, operating status, position adjustment status, fault alarm and communication status, facilitating on-site operation and maintenance personnel to quickly judge the module operation status; the calibration interface needs to cooperate with interface adapters and special software to complete parameter calibration, position calibration and fault troubleshooting; the DIP switches can quickly switch key parameters such as control mode and feedback type, with convenient operation, and basic configuration can be completed without complex debugging equipment, improving debugging efficiency and operational convenience. |
2.3 Environmental Adaptability
| Parameter Category | Core Indicators | Explanations |
|---|---|---|
| Temperature Range | Operating temperature: -40℃~+85℃; Storage temperature: -40℃~+105℃ | The wide temperature design is suitable for various scenarios such as industrial on-site control rooms, outdoor cabinets and engine compartments, and can operate stably in extreme high and low temperature environments without additional temperature control equipment. It is adapted to the high and low temperature working conditions around turbines and engines, meets the long-term continuous operation requirements of equipment under different climatic conditions, conforms to the application requirements of different industrial scenarios worldwide, and complies with Woodward's general temperature standard for industrial controllers. |
| Protection & Anti-interference | IP54 protection grade (optional IP65 explosion-proof protection), with anti-electromagnetic interference, anti-vibration and anti-surge functions; EMI immunity: 100V/m (200 to 1000MHz); anti-vibration: 6Gs (40Hz to 2000Hz); anti-impact: 20Gs (45Hz) | It is suitable for dusty and high-humidity industrial sites, and the sealed housing can effectively resist the intrusion of dust and water vapor; the electromagnetic shielding design prevents electromagnetic interference from frequency converters, motors, high-voltage equipment, etc., avoids distortion of control and feedback signals, ensures control precision, and complies with relevant EMI immunity standards; the anti-vibration and anti-impact design is adapted to the vibration environment of engines and turbines during operation, as well as the impact during equipment transportation, start-up and stop, ensures the long-term stable operation of the module, meets the requirements of industrial-grade anti-interference standards, and improves the overall reliability and stability of the system. |
3. Adapted Systems and Hardware Combinations
3.1 Adapted Equipment and Systems
It is core-compatible with all series of Woodward control systems (such as 5441 series digital controllers, MicroNet series controllers, APECS 4500 CAN controllers, etc.), and can work with the same series of signal conversion modules, power modules, servo actuators and position sensors to build a complete industrial servo position control link; it is adaptable to the servo position control needs of various equipment such as industrial engines, gas turbines, steam turbines, generator sets, fluid control valves and compressors, especially suitable for diesel engine control scenarios, and can control servo actuators such as engine throttles, turbine valves and fluid control valves; it is compatible with mainstream position sensors such as LVDT/RVDT, and can be directly connected to actuators such as servo motors and hydraulic servo valves; it is also compatible with mainstream DCS/PLC systems (such as ABB, Emerson, Honeywell, etc.), supports seamless integration and remote control through Modbus protocol, can be used as a control node in MSLC-2/DSLC-2 networking systems, adapts to multi-module collaborative control scenarios, and is also suitable for the servo control needs of low-speed off-highway vehicles, construction machinery, agricultural vehicles and other equipment, with a wide adaptation range and strong compatibility.
3.2 Supporting Software and Debugging Tools
It is matched with Woodward's dedicated debugging software (such as Woodward ToolKit™ software) and calibration tools, and calibration needs to be completed with the cooperation of interface adapters and software. It supports the precise calibration and configuration of control parameters (proportional gain, integral gain, response speed, etc.), position limits, fault thresholds, sensor excitation parameters, etc.; the software has a simple visual operation interface, which can display the position status, control signals, feedback signals, operating parameters and fault information of the servo mechanism in real time, support fault log reading and data analysis, and facilitate quick troubleshooting of problems such as excessive position deviation, servo jamming and sensor failure; after debugging, parameters can be solidified and stored with a non-volatile locking function to avoid parameter loss caused by misoperation, and also support parameter export/import function to facilitate batch configuration of multiple modules and improve debugging efficiency. All debugging operations can be completed without a handheld programmer, reducing debugging difficulty and operation and maintenance costs. Users can obtain the latest version of debugging software and operation manual through Woodward's official website, confirm that the manual is the latest revised version, and can also contact customer service for technical support and software update services.
3.3 Expansion and Linkage Capabilities
It supports parallel deployment of multiple modules, adapting to the synchronous control scenarios of multi-burner equipment (such as multiple sets of burners in large boilers); it can be expanded to connect external devices such as pressure sensors, temperature sensors and flow sensors to enrich the parameter collection dimension of the combustion system, realize closed-loop combustion regulation and optimize combustion efficiency; fault alarm signals can be linked with rear-end audible and visual alarm devices and emergency shutdown systems, and when dangerous working conditions are detected, safety interlock is quickly triggered to cut off fuel supply and stop ignition, ensuring all-round equipment safety; it supports linkage with Woodward active power transmitters and other equipment to realize the collaborative optimization of combustion efficiency and energy consumption, and can also cooperate with overspeed shutdown devices to assist in realizing prime mover overspeed protection and prevent equipment damage caused by out-of-control operation.
4. Product Features
Integrated Servo Control: Integrates core functions such as proportional/integral servo position control, LVDT/RVDT sensor excitation and closed-loop feedback regulation to realize the whole-process precise control of servo actuators without the need for additional multiple modules, simplifying the system architecture, improving the coordination and stability of servo control, adapting to the servo positioning needs of various industrial power equipment, and being particularly suitable for diesel engine control scenarios.
High-reliability Safety Protection: Equipped with functions such as fault self-diagnosis, overload protection and position limiting, it can quickly respond to abnormal working conditions and trigger protection actions; supports linkage with overspeed protection related logic to assist in ensuring the safety of prime movers; complies with ANSI B16.104 Class III standard, with reverse polarity protection, strong anti-interference, wide temperature adaptation and other designs, can be used in hazardous locations, ensures the long-term stable operation of the module, and meets the 7x24-hour continuous operation requirements of industrial equipment.
Flexible Adaptation and Integration: Compatible with various types of servo actuators and position sensors, it can be seamlessly connected to all series of Woodward control systems and mainstream DCS/PLC systems, supporting the optional configuration of multiple communication interfaces and power supply modes; adapted to multiple fields such as industry, navy and aerospace, and various equipment such as low-speed off-highway vehicles and construction machinery, it can be quickly integrated in the transformation of old and new systems with extremely strong compatibility.
High Stability and Convenient Maintenance: Adopts Deutsch sealed housing design with high protection grade, strong anti-vibration and anti-impact capabilities, and can cope with harsh industrial working conditions and special environments in engine compartments; standardized DIN rail mounting, intuitive status indication and convenient calibration functions, combined with dedicated debugging software, reduce the difficulty of installation, debugging and later maintenance, and cut down operation and maintenance costs; parameters can be exported/imported in batches and remote debugging is supported to further improve operation and maintenance efficiency.
5. Application Scenarios
Energy and Power Generation Field: Servo control of turbine valves and positioning control of servo mechanisms of generator sets in thermal power plants and waste heat power plants, cooperating with Woodward controllers to achieve precise positioning and efficiency optimization, ensuring the stable operation of power generation systems; servo control of diesel generator sets, used as a key component of control kits.
Petrochemical and Special Fields: Servo control of compressors and fluid control valves in petroleum refining and chemical production processes, adapted to explosion-proof areas (with appropriate explosion-proof housings selected); also adapted to the servo control needs of relevant power equipment in naval and aerospace fields, meeting the precise control requirements under special environments.
Industrial and General Equipment Field: Throttle servo control of industrial engines and gas turbines, servo positioning control of industrial kilns and fluid equipment in metallurgical and building materials industries; adapted to the servo control needs of low-speed off-highway vehicles, construction machinery, agricultural vehicles and other equipment; as a component of diesel engine control kits, it is widely used in industrial diesel engine related control scenarios to realize precise servo positioning and safety protection.
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