Description of Woodward 9907-164 505 Turbine Control

The Woodward 9907-164 is a part of the 505 digital microprocessor-based controller series designed for steam turbines with single or split-range actuators. This unit is engineered to manage steam turbines' speed, load, and various operational parameters, ensuring precise and reliable turbine control.

Features

The 9907-164 model includes several key features:

• Speed/Frequency Control: Manages the turbine's rotational speed to ensure stable and efficient operation.
• Extraction/Admission Header Pressure Control: Regulates the pressure for extraction and admission processes within the turbine system.
• Critical Speed Avoidance: Incorporates three speed bands to prevent operation at critical speeds that could cause mechanical stress.
• Auto Start Sequence: Supports both hot and cold starts with automated sequences for smooth operation.
• Valve Limiter(s): Limits valve positions to protect the turbine from extreme conditions.
• First-Out Indication: Provides shutdown diagnostics to identify the first cause of a trip or shutdown.
• Security Features: Includes password protection for programming to prevent unauthorized changes.
• Modbus Communication: Dual independent Modbus communication links for integration with other control systems.
• Remote Analog Setpoints: Allows for remote adjustments of speed/load, extraction/admission, auxiliary, and cascade controls.

Technical Specifications

• Dimensions: 14 inches wide, 11 inches high, and 4 inches deep.
• Display Type: Two lines of 24 characters each.
• Enclosure Type: IEC 60529, IP 56 rated.
• Input Voltage: +24 Vdc at 1 A.
• Operating Temperature Range: -4 to +140°F.
• Storage Temperature Range: -40 to +185°F.
• Humidity Standards: Operates in environments from 20 to 55°C at 95% humidity for up to 48 hours.
• Weight: 4.45kg 9.11 pounds.
• Keypad/Display: Equipped with a 30 multi-function keypad for user interaction and configuration.
• Communication Ports: RS-232/RS-422 with Modbus protocol for data exchange and control.
• Software: Compatible with 505View or OpView™ software for monitoring and configuration.