Woodward 8271-652 from SAUL ELECTRIC | In Stock
1.8271-652 Product Overview
The Woodward 8271-652 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. 8271-652 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 8271-652 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.
Input/output pins
You can see that there are 14 instructions related to I/O pins in BS-1. The reason for emphasizing this point is that the input-output pins
are the only way for BASIC Stamp to communicate with the outside world. BS-1 has 8 input/output pins (numbered 0 to 7), and BS-2 has
16 input/output pins (numbered 0 to 15).
These input and output pins are bidirectional, which means that input values can be read from the pins and output through the pins. The
easiest way to send values to a pin is to use the HIGH or LOW command. Using the statement “high 3” can emit a 1 (+5 volts) on pin 3,
while using “LOW” will emit a 0 (ground). The third pin here can be selected arbitrarily – you can output level signals to any pin from 0 to 7.
There are many interesting instructions about input and output pins. For example, if you follow the POT instruction to connect a capacitor in
parallel across a potentiometer (variable resistor), the POT instruction can read the potentiometer settings. PWM commands
can emit modulation signals with pulse width. Adding control and driver functions to Stamps is much easier with instructions like this.
For detailed information about language, please refer to the documentation. In addition, books such as Scott Edward”s Programming
and Customizing the BASIC Stamp Computer, which contain a large number of example projects, are also extremely beneficial.
Practical operation of BASIC Stamp
If you want to actually operate BASIC Stamp, it is very easy to get started. All you need is a desktop computer and a BASIC Stamp starter kit.
The introductory toolkit includes a Stamp microcontroller, programming cable, and an application running on a desktop computer that downloads BASIC programs into Stamp.
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