Woodward 8406-123 from SAUL ELECTRIC | In Stock
1.8406-123 Product Overview
The Woodward 8406-123 belongs to the 505/505E series digital turbine controllers. It is a microprocessor-based control module designed for single-valve steam turbines,
including single extraction/admission systems or split-range actuator configurations.
The controller features a front panel Operator Control Panel (OCP) with a two-line, 24-character display and multi-function keypad, allowing easy on-site configuration and monitoring.
2. 8406-123 Technical Specifications and Parameters
| Parameter | Details |
|---|---|
| Power Supply | +24 VDC, approx. 1 A |
| I/O Outputs | Discrete Outputs: 8 Analog Outputs: 6 Actuator Outputs: 2 |
| Display / HMI | Two-line, 24-character LCD, with multi-function keypad |
| Dimensions | Approx. 14 × 11 × 4 in (35.6 × 27.9 × 10.2 cm) |
| Weight | Approx. 9.11 lbs (4.13 kg) |
| Operating Temperature | –4 to +140 °F (–20 to +60 °C) |
| Storage Temperature | –40 to +185 °F (–40 to +85 °C) |
| Humidity Standard | 95% RH at 20-55 °C for 48 hours without damage |
| Protection Class | Typically meets industrial dust and water protection standards |
| Communication Protocol | Supports Modbus, RS-232 / RS-422 serial interfaces |
3. Brand History
Woodward, Inc., founded in 1870 and headquartered in Fort Collins, Colorado, USA, is a global leader in energy control systems. The company has a long history of innovation in turbine control, engine management,
and power generation systems.
Woodward products are widely recognized for their reliability and precision in demanding industrial and power generation applications.
4. Applications in Industrial Automation
The 8406-123 plays a critical role in industrial automation and power generation environments:
- Steam Turbine Control: Manages startup, speed regulation, and extraction/admission control of steam turbines.
- Power Generation Systems: Used in power plants to regulate turbine-driven generators for stable frequency and load management.
- Compressor and Pump Drive Control: Ensures precise speed control for turbine-driven compressors and pumps.
- Process Industry Applications: Applied in chemical plants, refineries, and other industries requiring precise turbine operation.
- Safety and Protection Functions: Includes overspeed protection, critical speed avoidance, actuator travel limits, and event logging for operational safety.
What is a motor driver
A motor driver is simply a switch, because the motor drives a large current or voltage, and when ordinary switches or electronic components
cannot be used as switches to control the motor, a so-called driver must be added to control the motor.
The function of a motor driver: The function of a motor driver refers to controlling the idle speed of a motor by controlling the rotation angle and
operating speed of the motor to achieve control over the duty cycle.
Principle circuit diagram of motor drive circuit: The motor drive circuit can be driven by relays or power transistors, or by thyristors or
power type MOSFETs. In order to adapt to different control requirements (such as motor operating current, voltage, motor speed regulation,
forward and reverse control of DC motors, etc.), different types of motor drive circuits must meet relevant requirements.
The electric vehicle does not start when powered on, making it difficult to push and accompanied by a “clacking” sound.
The occurrence of this situation is caused by a short circuit in the motor wire due to virtual contact. It is difficult to remove the
three coarse phase wires of the motor and push the cart, indicating that the controller is broken and needs to be replaced in a
timely manner. If the implementation is still difficult, it indicates that there is a problem with the motor, which may be caused by
a short circuit and burning of the motor coil.
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