Product Description
Woodward 8200-226 Servo Position Controller
Product Overview
- The Woodward 8200-226 is a Servo Position Controller (SPC) designed for precise control of servo valves in industrial applications, such as gas turbines, steam turbines, and fuel control systems in power generation, oil and gas, and marine environments. This microprocessor-based controller provides accurate positioning of proportional or integrating servo valves, ensuring optimal control of fuel flow, turbine speed, or other critical parameters. The 8200-226 interfaces with Woodward control systems to translate demand signals into precise valve positions, supporting stable and efficient operation. It features robust diagnostics and communication capabilities for integration into modern control architectures. Compared to Woodward’s genset controllers (e.g., EasyGen-3200-5, 8440-2050E), speed controls (e.g., 9905-857), or MicroNet CPU modules (e.g., 5501-381), the 8200-226 is a specialized valve positioner, not a standalone control or protection device. It is distinct from Woodward’s protection relays (e.g., XD1G11), communication modules (e.g., SST-ESR2-CLX-RLL), excitation systems (e.g., DECS-100-B15), electronic governors (e.g., DYN1-10784-003-0-12), and actuators (e.g., 8408-921).
Technical Specifications
- The 8200-226 has the following specifications based on industry sources and Woodward documentation:
| Specification | Details |
|---|---|
| Model/Part Number | 8200-226 |
| Manufacturer | Woodward |
| Description | Servo Position Controller for Servo Valves |
| Series | SPC (Servo Position Controller) |
| Function | Controls position of proportional or integrating servo valves |
| Processor | Microprocessor-based (specific architecture not publicly detailed) |
| Memory | Flash: 4–8 MB (for firmware and configuration) RAM: 2–4 MB (for runtime data) |
| Display | No onboard display; LED indicators for status and faults |
| Inputs | 2 analog inputs (4–20 mA or 0–5 V, for position demand and feedback) 1 LVDT/RVDT input (for valve position feedback) 2 discrete inputs (24 VDC, for enable or reset) |
| Outputs | 1 servo valve output (±10 V or ±100 mA, configurable for proportional or integrating valves) 1 analog output (4–20 mA, for position feedback) 2 relay outputs (dry contact, up to 250 VAC/2 A, for alarms) |
| Communication Interfaces | 1 serial port (RS-485, Modbus RTU) 1 CANbus port (for integration with Woodward control systems) Ethernet (optional, Modbus TCP) |
| Position Accuracy | ±0.1% of full stroke |
| Response Time | <50 ms (for full stroke adjustment) |
| Protection Functions | Loss of signal detection, valve fault detection, overcurrent protection |
| Redundancy | Non-redundant (redundant configurations possible with multiple units) |
| Diagnostics | Fault detection, event logging (up to 100 events), position trending, status LEDs |
| Compatibility | Woodward control systems (e.g., MicroNet, 505, EasyGen), proportional/integrating servo valves (e.g., Woodward, Moog); third-party devices via Modbus; integrates with SCADA systems |
| Power Supply | 18–32 VDC (24 VDC nominal) |
| Power Consumption | Approx. 5–10 W |
| Environmental Specifications | Operating Temperature: -40°C to +70°C (-40°F to +158°F) Storage Temperature: -40°C to +85°C (-40°F to +185°F) Relative Humidity: 5% to 95% non-condensing Vibration: IEC 60068-2-6 compliant Shock: IEC 60068-2-27 compliant |
| Enclosure | IP20 (requires enclosure for harsh environments) |
| Dimensions | Approx. 200 mm (H) x 100 mm (W) x 50 mm (D) |
| Weight | Approx. 0.5–1 kg |
| Mounting | DIN rail or panel-mounted |
| Certifications | CE, UL, CSA, marine certifications (e.g., DNV, ABS, configuration-dependent); ATEX/IECEx Zone 2 (optional) |