Digital guide
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Woodward 8915-103
- Product Name: Woodward 8915-103 – 505/505E Series Digital Turbine Controller / Overspeed Protector
- Product Introduction: The 8915-103 is a microprocessor-based digital governor controller produced by Woodward, belonging to the classic 505 series. It is primarily designed for speed control and overspeed protection of steam turbines. Additionally, references indicate it can be configured as part of Woodward’s easyYgen 3000XT series (3200XT-P1 version) for genset control.
Detailed content
- Technical Specifications:
- Power Supply: 18–32 Vdc (24 Vdc nominal)
- Display: Two-line × 24-character LED/LCD display with multifunction keypad
- Enclosure Rating: NEMA 4X or IEC 60529 IP56
- Inputs: 6 programmable current inputs, 16 discrete contact inputs
- Outputs: 2 actuator outputs, 8 relay outputs, 6 programmable current outputs
- Communication Interfaces: RS-232, RS-422, RS-485
- Software: OpView™ and 505View
- Operating Temperature: –20 to +60°C (–4 to +140°F)
- Storage Temperature: –40 to +85°C (–40 to +185°F)
- Weight: Approximately 9.11 lbs (4.13 kg)
- Processing Speed: 50 MHz (per some references)
- Program/Data Capacity: 53 MB (per some references)
- Dimensions: Approx. 14 × 11 × 4 in (35.6 × 27.9 × 10.2 cm)
- Functional Features:
- Precise speed control by adjusting steam inlet flow
- Supports single-range or split-range actuators
- Triple independent overspeed protection logic
- Overspeed test button for on-site testing
- Emergency stop capability
- Automatic control mode switching on sensor failure
- Local/remote control priority selection
- On-site programming via integrated Operator Control Panel
- Application Scenarios: Industrial steam turbines, small grid turbo-generators, turboexpanders, single extraction/admission steam turbine applications. Also applicable to diesel engines, gas engines, and gas turbines for speed/load control.
- Material Composition: Printed circuit boards housed in industrial-grade enclosure meeting NEMA 4X / IP56 standards.
- Structural Characteristics: Module-style structure designed for control room installation; consists of a stack of printed circuit boards mounted in a protective housing for safe integration into control panel systems.
- Working Principle: The microprocessor-based controller continuously monitors turbine speed via input signals, compares actual speed to setpoint, and adjusts actuator outputs to regulate steam inlet flow. Triple independent overspeed protection logic ensures rapid shutdown in overspeed conditions.
- Installation Requirements: Module-style installation in control panel; control room mounting configuration; ensure proper 24 Vdc power supply; connect per Woodward 505 series wiring diagrams.
- Usage Notes: Configure parameters using OpView™ or 505View software. Perform regular overspeed protection testing. Ensure ambient temperature remains within –20 to +60°C operating range.
