Woodward 9903-226 | Governor | Controller | Potential Converter
1.9903-226 Product Overview
The Woodward 9903-226 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. 9903-226 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 9903-226 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.
Peripheral drive, what is a peripheral drive
Peripheral drive, what is a peripheral drive
We can simply divide the peripheral drivers of interface circuits into the following types:
1. Door 2 Or door 3 Or Non Gate 4 NAND gate 5 Non 6 Communication relay driver 7 H-bridge driver
CD ROMs, HARD DISKs, and FLOOY DISKs in PCs are all drives, which are devices that drive storage devices. For example,
food and microwave ovens are related to disks and drives. Fireline hard drives, MOs, and so on in Apple computers are all drives.
The phenomenon you mentioned cannot completely determine whether the drive is damaged. If it is a hard drive, specialized software needs to be used to test it
There are mainly the following types of drivers:
（1） LTO Ultrium Tape Drive
LTO (Linear Tape Open) is an open tape architecture developed by a consortium of three world-class storage product manufacturers
(IBM, HP, and Segment). The meaning of “open” is that the product can be used by multiple
manufacturers Ultrium “is the first product developed by it The compression capacity of each tape is 200GB, and the data transfer
capacity is 30GB/S (2:1 compression) IBM”s Ultrium tape drives have unparalleled powerful technology, not only with advanced multi
track recording capabilities, magnetic reluctance (MR) heads, and servo technology, but also with extremely high recording density Error
Correction Code (ECC) function can help you achieve data integrity The products provided by IBM include different series such as 3580, 3581, 3583, and 3584
Click to learn more about Woodward”s products
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