Description
The Woodward 9907-162 is a microprocessor-based digital governor control unit belonging to the renowned 505 Series. It is specifically engineered to provide precise, reliable speed and load control for steam turbines utilizing single or split-range actuators. It features integrated operator controls and essential safety functions like emergency stop and overspeed test capabilities.
📋 Technical Specifications
- 🌍 Origin Country: United States
- ⚖️ Weight: Approximately 9.11 lbs (4.13 kg)
- 📐 Dimensions: 11 in x 14 in x 4 in (279 mm x 356 mm x 102 mm)
- ⚡ Input Voltage: +24 VDC (range: 18–32 VDC)
- 🔌 Power Consumption: Approx. 25 W max
- 🌡️ Operating Temperature: -20°C to +60°C
- 🖥️ Display Type: Two-line by 24-character LED display
- 🔌 Communication Ports: RS-232, RS-422, RS-485
- 🛡️ Enclosure Protection: NEMA Type 4X / IP56 (with optional casing)
- 🔄 Actuator Outputs: 2 Actuator Outputs, 8 Relay Outputs, 6 Programmable Current Outputs
📖 Operating Instructions
- Power Connection: Verify that the incoming power source supplies a stable 18–32 VDC (nominally +24 VDC) with correct polarity before turning the system on.
- System Wiring: Connect the single or split-range valve actuators, magnetic pickups (MPUs) for speed sensing, configuration lines, and discrete I/O securely to the rear terminal blocks according to the official manual.
- Field Configuration: Use the front-panel 30-key multi-function keypad and display interface or the configuration software (such as Woodward’s Tool/Service software) to input turbine parameters, speed setpoints, and control dynamics.
- Operation & Monitoring: Navigate the menu screens via the front panel to monitor actual versus setpoint values, execute startup sequences, or perform on-line overspeed testing.
❓ Frequently Asked Questions (Q&A)
- Q: What type of prime movers is the 9907-162 designed for?
- A: It is purpose-built for steam turbines utilizing single or split-range valve actuators.
- Q: Can operators configure the controller on-site?
- A: Yes, the unit is fully field-programmable directly through its integrated front panel keypad and display interface.
- Q: What communication protocols does it support?
- A: It supports serial communication hardware standards including RS-232, RS-422, and RS-485 for connecting to external monitoring systems or PLC networks.
