Description
Woodward 8200-1302 | 505 Digital Governor | Steam Turbine Control
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | 8200-1302 |
| Manufacturer | Woodward |
| Controller Family | 505 |
| Product Type | Digital Steam Turbine Governor |
| Supply Voltage | 18–36 VDC |
| Power Variant | LVDC |
| Compliance | Marine / ATEX version |
| Actuator Application | Single or split-range actuator |
| Operator Interface | Integrated graphical front panel |
| Display | 8.4-inch LCD |
| Communication | Modbus communication ports |
| Configuration | Field configurable |
| Turbine Type | Steam turbine |
| Control Functions | Speed, load, auxiliary and cascade control |
| Critical-Speed Function | Critical-speed avoidance |
| Installation Application | Industrial / marine turbine control |
Woodward’s own 505 manual identifies 8200-1302 as the Marine/ATEX LVDC version, with an 18–36 VDC input. The same manual distinguishes it from 8200-1300, which is the ordinary-location LVDC version, and 8200-1301, which accepts AC/DC high-voltage power.
Product Introduction
The Woodward 8200-1302 is a 505 Digital Governor designed to control steam turbines using single or split-range actuators. It combines turbine control functions with an integrated operator interface, allowing operators to configure and monitor speed, load, startup sequences, alarms, and turbine operating conditions from the controller. Woodward documentation lists 8200-1302 specifically for LVDC Marine/ATEX applications.
The controller is more than an HMI panel. Its control application includes multiple PID functions used to influence turbine inlet steam-flow demand, including speed/load, auxiliary, auxiliary-2, and cascade control functions. Critical-speed avoidance and turbine startup functions are also part of the 505 control architecture.
8200-1302
Application Scenarios & Field Pitfalls — Engineer’s Perspective
Engineering Pain Point
The most common procurement mistake with 8200-1302 is confusing the power-supply variant with other 505 models. The model number looks similar to 8200-1300 and 8200-1301, but their permitted supply configurations and compliance classifications are different.
Typical Applications
- Steam Turbine Speed Control — maintains configured turbine speed under operating and load changes.
- Generator Drive Applications — supports turbine/load control where the steam turbine drives an electrical generator.
- Mechanical Drive Turbines — applicable to turbine-driven compressors, pumps, and other rotating equipment.
- Marine Turbine Systems — the 8200-1302 variant is specifically identified by Woodward for Marine/ATEX LVDC applications.
- Single or Split-Range Actuation — designed for turbine applications using the applicable actuator arrangement.
Technical Pitfalls to Avoid
- Do not confuse 8200-1302 with 8200-1301.
8200-1302 is the 18–36 VDC LVDC version. The 8200-1301 uses 88–264 VAC or 90–150 VDC. Applying the wrong supply to the wrong variant is a serious installation error. - Verify the hazardous-location requirement.
Woodward identifies 8200-1302 as the Marine/ATEX LVDC version. The compliance status of an individual unit should still be checked from its nameplate and certification markings, especially for replacement equipment installed in a classified area. Woodward previously issued a service bulletin concerning ATEX compliance for certain 8200-1302 production units. - Preserve the turbine configuration.
Replacing the physical controller does not automatically reproduce the running turbine application. Record configuration files, actuator setup, speed-sensing configuration, control constants, startup sequencing, trip logic, and communication settings before replacement. - Check actuator compatibility.
The 505 is designed around specific turbine actuator arrangements. The controller should be matched to the existing actuator type, valve configuration, feedback scheme, and application-specific control strategy rather than selected solely by the 505 model number. - Check the software/OS revision.
Woodward documentation shows that different 505 hardware revisions can use different OS/footprint and GAP software part numbers. For 8200-1302, the applicable software/footprint changes with controller revision.
Related Products
- 8200-1300 — 505 LVDC ordinary-location version; same general 505 control family but different compliance designation.
- 8200-1301 — 505 HVAC/DC ordinary-location version; accepts 88–264 VAC or 90–150 VDC and should not be substituted solely because it is another 505 controller.
- 8200-1310 — 505XT LVDC ordinary-location controller for applications requiring the 505XT platform.
- 8200-1312 — 505XT LVDC hazardous-location variant.
- 505D — Woodward digital governor family represented by the 8200-1300/1301/1302 models.
- 505XT — related Woodward turbine controller for applications requiring additional turbine-control functions and I/O architecture.
- 5404-1801 — Woodward old-505-to-new-505 retrofit wiring kit listed in the current Industrial Turbine Products Catalog.
Procurement Note
For a Woodward 8200-1302, specify the complete part number and verify the 18–36 VDC supply requirement, Marine/ATEX designation, controller revision, software/footprint version, actuator configuration, and turbine application file.
Woodward issued a product change notice identifying 8200-1302 as a 505D LVDC Marine/ATEX steam-turbine control and later documented its replacement by the 8200-2302 LVDC variant for the newer hardware platform. That makes the complete part number and revision particularly important when planning a replacement rather than assuming every 505D unit is interchangeable.
Procurement identification: Woodward 8200-1302 = 505 Digital Governor, LVDC Marine/ATEX version, 18–36 VDC, for steam-turbine control. It is a complete turbine governor/controller, not simply an HMI or generic PLC I/O module.
