Description
Product Overview
Woodward 8200‑1302 is 505D series integrated digital turbine governor with built‑in 8.4‑inch LCD graphical HMI keypad unit. It implements complete turbine control algorithms: auto‑start sequence for hot/cold start, critical speed avoidance, dual redundant speed monitoring, overspeed trip protection, load regulation and timestamped event logging. Rich I/O interfaces connect speed pickups, process transmitters and valve actuators. Modbus RTU and Ethernet TCP/IP enable seamless connection with DCS and SCADA system. OEM discontinued, widely used as legacy spare part for power plant, marine and oil‑gas turbine unit maintenance。

Technical Specifications
| Item | Specification |
|---|---|
| Model | 8200‑1302 |
| Brand | WOODWARD (USA) |
| Series | 505D Digital Governor Turbine Control |
| Display | 8.4‑inch integrated LCD graphical HMI keypad |
| Power Supply | 18‑32 VDC, typical 24VDC isolated power |
| Analog Input | 8 configurable 4‑20mA channels with loop power supply |
| Digital Input | 20 contact DI channels, including 10 external alarm & trip inputs |
| Speed Input | 2 redundant speed channels, compatible with magnetic pickup & proximity probe |
| Analog Output | 2‑channel 4‑20mA control output,12‑bit resolution |
| Relay Output | 8 Form‑C relay contact outputs |
| Communication | RS‑485 Modbus RTU, Ethernet TCP/IP Modbus‑TCP |
| Certifications | ATEX hazardous area, IACS UR E10 marine certification, CE‑EMC |
| Front‑panel Rating | IP54, Pollution Degree 3 |
| Operating Temperature | ‑30℃ ~ +70℃ |
| Storage Temperature | ‑40℃ ~ +85℃ |
| Relative Humidity | 5%‑95% non‑condensing |
Key Features
- All‑in‑one integrated controller & graphical HMI panel; on‑site configuration, commissioning and monitoring without external programming device
- Turbine‑oriented control logic: auto‑start sequence, critical speed avoidance, dual‑speed & load dynamics, overspeed trip, RTC timestamp for alarm & trip events
- Dual redundant speed input channels to improve turbine unit safety, compatible with multiple speed sensors
- ATEX and IACS marine certification, suitable for power plant, offshore platform and marine turbine harsh working environment
- Multi‑protocol communication including Ethernet and Modbus for k/SCADA remote monitoring & diagnosis
- Obsolete OEM spare part for legacy turbine system; 505XT series is new generation alternative for system upgrade
Application
Steam turbine & gas turbine in power plant, marine propulsion turbine, oil‑gas compressor station turbine unit, closed‑loop speed, load and valve actuator governing control.








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