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Woodward 8915-887
Product Introduction
The Woodward 8915-887 is a microprocessor-based digital control device primarily used to display and control turbine operating status and parameters. It controls turbine start, stop, acceleration, and deceleration by operating single or dual split-range actuators to drive steam inlet valves, thereby achieving speed control of turbocompressors. It serves industrial steam turbines, steam turbines, utility turbo-generators, and turboexpanders.
Detailed content
Technical Specifications
- Power Supply: 18–32 VDC (supports 24 VDC input)
- Display: Two-line × 24-character LED display
- Enclosure: NEMA 4X or IEC 60529 IP56 rated
- 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
- Storage Temperature: –40 to +85 °C
- Weight: Approx. 9.11 lbs (4.13 kg)
Functional Features
- Menu-driven software for intuitive on-site configuration
- Triple independent overspeed protection logic with overspeed test button
- Emergency stop function for immediate shutdown
- Automatic control mode switching upon sensor failure
- Local/remote control priority selection
- PID closed-loop control capability
- High flexibility and scalability for specific application configuration
Application Scenarios
- Industrial steam turbines, steam turbines, utility turbo-generators, turboexpanders
- Oil & gas, petrochemical, chemical, metallurgy, paper printing, energy, power transmission and distribution, water treatment, municipal boiler heating
Installation Requirements
- Modular structure form, control room installation
- Proper ventilation to maintain 0–60 °C ambient temperature
- Keep relative humidity ≤ 60% (non-condensing)
Usage Notes
- Verify voltage is within 18–32 VDC before powering on
- Do not exceed specified temperature and humidity limits
- Perform regular inspection of I/O connections and communication ports
