Description
Product Overview
The Woodward 8200-1302 is the 505D digital governor, an integrated turbine controller with built-in graphical HMI and keypad, engineered for steam turbine speed, load and process control in power generation and mechanical drive systems. It executes automatic startup sequences, speed regulation, overspeed protection and turbine trip logic, supporting Modbus RTU for DCS/PLC system integration.
Technical Specifications
| Item | Parameter |
|---|---|
| Part Number | 8200-1302 |
| Manufacturer | Woodward |
| Product Family | 505D Turbine Control |
| Display | 8.4 inch color LCD graphical panel |
| Power Supply | 18–36 VDC isolated low voltage DC |
| Speed Inputs | 2 redundant speed inputs for magnetic pickup, eddy current or proximity probes |
| Analog Inputs | 8 configurable AI channels (27 selectable functions, 4–20mA with loop power) |
| Contact Inputs | 20 digital contact inputs |
| Analog Outputs | 2 × 4–20mA control outputs for actuator drive |
| Relay Outputs | 8 Form-C relay contacts for alarm & trip |
| Communication | Modbus RTU |
| Enclosure Rating | IP54 front panel, Pollution Degree 3 |
| Certifications | ATEX, IACS UR E10 marine approval |
| Operating Temp | -30 °C ~ +70 °C |
Key Features
- Auto hot/cold start sequencing with temperature compensation
- Critical speed avoidance across three separate speed bands
- 10 external alarm inputs + 10 dedicated trip digital inputs
- RTC time-stamping for trip and alarm event recording
- Dual speed/load dynamics, peak overspeed speed capture, zero-speed detection
- Three operation modes: configuration, run, calibration
- Emergency trip pushbutton on front panel with LED status indication
- Isochronous and droop speed control modes, cascade process control support
Application
Primary use for steam turbine governing in power plants, CHP, utility boiler turbines and mechanical drive equipment. The integrated HMI allows local parameter tuning, trend viewing and manual operation without separate operator panel.
Installation & Maintenance Notes
- Handle with ESD protection; static discharge can damage internal PCB circuits
- Mount in control cabinet cutout, front panel sealed to IP54
- Separate wiring for speed pickups, analog signals and high-voltage trip circuits
- Regular backup of configuration parameters before firmware or hardware replacement
FAQ
Q: What is the difference between 505 and 505D (8200-1302)? A: 505D (8200-1302) includes the integrated color graphical display and keypad, while standard 505 uses text-only display.
Q: Can this controller work for gas turbines? A: The 8200-1302 variant is optimized mainly for steam turbine control; Woodward offers other 505 series models for gas turbine applications.
Q: What communication protocol does it use to connect to DCS? A: Native Modbus RTU for reading alarms, speed, load and writing setpoints.
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