WOODWARD 9907-162 9907-164 505 Turbine Control

9907-162 & 9907-164 Woodward 505 series microprocessor control platform, suitable for single extraction and/or single-channel切入 steam turbine control. The core of the controller adopts a microprocessor design. It can complete control tasks such as speed, load, start/stop, and overspeed protection, among others, via the on-site control panel or software parameter configuration.

The 505 Digital Governor series is a microprocessor-based controller developed by Woodward for power machinery, such as steam turbines, featuring high reliability, configurational flexibility, and field programmability. 9907-162, 9907-163, and 9907-164 are three common configuration options within this series.
The main differences among these three models lie in the power supply method and applicable power supply categories: 9907-162 is a high-voltage AC power supply version, 9907-163 is an AC/DC hybrid power supply version, and 9907-164 is a low-voltage DC power supply version (18–32 V DC).

Comparison of Specifications for WOODWARD 9907-162 & 9907-164：

The 9907-164 model, which is powered by low-voltage DC, is particularly suitable for being installed in distribution control cabinets, PLC control systems, or used in conjunction with modern automation systems. On the other hand, the 9907-162 model, which is powered by high voltage, is more commonly used in power equipment to directly connect to the AC power supply in control cabinets.

Have the ability to adapt to industrial-grade environments:
Operating temperature range: approximately –40°F to +140°F (approximately –40°C to +60°C)
Storage temperature: –40°F to +185°F
Humidity and protection: Compliant with IEC 60529 IP56 standard, suitable for on-site environments with high levels of dust and moisture.

As digital speed regulators, these two models support the standard PID control algorithm, which is used to precisely control the rotational speed of the steam turbine and the load distribution.
Each module is equipped with a multifunctional operation panel, featuring a 30-key keyboard and a dual-line 24-character display, which is used for on-site parameter setting and monitoring.
The module is equipped with key security features, including:
Over-speed test button: Facilitates on-site testing of whether the over-speed protection logic is functioning properly
Critical speed avoidance: The system can use algorithms to prevent operation within specific dangerous speed ranges.
Valve limit and status monitoring: Restricts the operation of the actuator to prevent mechanical damage
Automatic shutdown and the First-Out Indicator: Helps quickly identify the cause when a fault occurs

The 505 controller is suitable for industrial steam turbines of various sizes and applications. It includes specially designed algorithms and logic to start, stop, control, and protect industrial steam turbines or turboexpanders driving generators, compressors, pumps, or industrial fans.

In industrial field configurations, 9907-164 & 9907-162 are typically used as a turbine control unit for data exchange with PLC/DCS systems. The typical integration architecture is as follows:

┌───────────────────────────┐
│ DCS/PLC system │ ←-- Modbus/TCP or RS-485/RTU
│ HMI/SCADA Monitoring main station │
│(ABB/Siemens/Yokoga,wa etc.) │
└──────────▲────────────────┘
│ Modbus/Ethernet
│
┌──────────┴────────────────┐
│ Woodward 9907-164 │ Controller
│ +24VDC Power │
│ RS-232/RS-422/RS-485 │
│ Ethernet (Optional) Network │
│ I/O Analog/Digital │
└──────────▲────────────────┘
│ On-site sensors/outputs
│
┌───────┴────────┐
│ Turbine speed sensor │
│ Actuator/Valve Drive   │
└────────────────┘