WOODWARD 8200-1203 4-20 mA – 8 Inputs / 2 Outputs, 24 VDC Loop Power

الوصف

The WOODWARD 8200-1203 is a highly capable and convenient Analog Input/Output (AIO) Module within Woodward’s LinkNet-HT distributed I/O family. Its standout feature is the integrated 24 VDC loop power for its analog inputs, which simplifies wiring and reduces external power supply requirements for many industrial sensors.

1. SEO-Optimized Titles:

• WOODWARD 8200-1203: 4-20 mA Analog I/O Module with 24 VDC Loop Power.
• WOODWARD 8200-1203: LinkNet-HT 8 AI / 2 AO with Integrated Sensor Power.
• WOODWARD 8200-1203: Industrial Process Variable Module with Powered Inputs.
• WOODWARD 8200-1203: Woodward Distributed Analog I/O for 4-20 mA Sensors.
• WOODWARD 8200-1203: Simplify Wiring with Onboard Loop Power AIO.

2. Product Overview:

The WOODWARD 8200-1203 is an Analog Input/Output (AIO) module that functions as part of Woodward’s LinkNet-HT (High-Temperature) series of distributed I/O. It provides a comprehensive interface for analog signals, enabling the main control system to monitor various process variables and send precise control commands. Its key differentiating feature is the onboard 24 VDC loop power available for its 8 analog inputs, which can directly power two-wire 4-20 mA transmitters.

Specifically, it offers:

• 8 Analog Input Channels: Designed to receive 4-20 mA current signals from sensors, with integrated 24 VDC loop power.
• 2 Analog Output Channels: Designed to send 4-20 mA current signals to actuators.

This configuration is ideal for applications requiring multiple analog measurements and a few analog control outputs, with the added benefit of simplified sensor wiring.

• Product Type: Analog Input/Output (AIO) Module
• Manufacturer: Woodward
• Series: LinkNet-HT (High-Temperature)
• Channels: 8 Analog Inputs (4-20 mA, with 24 VDC Loop Power), 2 Analog Outputs (4-20 mA)
• Function: Acquires analog sensor data (with integrated power) and generates analog control signals.

3. Detailed Product Description:

The WOODWARD 8200-1203 streamlines the integration of 4-20 mA current loop sensors into Woodward control systems. By providing integrated 24 VDC loop power for its analog inputs, it significantly reduces the need for external power supplies and complex wiring, simplifying installation and maintenance. As part of the LinkNet-HT series, it’s built for reliable operation in demanding industrial environments.

Here’s a closer look at its features and function:

• 8 Analog Input Channels with Integrated 24 VDC Loop Power: Each of these eight channels is designed to receive a standard 4-20 mA current loop signal. The crucial advantage here is that the module can directly supply the 24 VDC excitation power required by many two-wire 4-20 mA transmitters. This eliminates the need for separate external power supplies for each sensor, simplifying field wiring, reducing component count, and lowering installation costs. These inputs are used to monitor a wide range of process variables from various sensors, including:
  • Pressure Transmitters: Fuel pressure, oil pressure, steam pressure.
  • Flow Transmitters: Fuel flow, air flow, lube oil flow.
  • Level Transmitters: Tank levels, reservoir levels.
  • Position Transmitters: Valve positions, damper positions.
  • Other Process Variables: Any instrument that outputs a 4-20 mA signal.
• 2 Analog Output Channels (4-20 mA): These two channels are capable of generating a precise 4-20 mA current signal. These outputs are used to control proportional actuators and other field devices that respond to a continuous current signal, such as:
  • Proportional Valves: Fuel valves, steam admission valves, bypass valves.
  • Variable Speed Drives (VSDs): Setting motor speeds.
  • Process Controllers: Sending setpoints or remote commands to other local controllers.
• LinkNet-HT Communication: The module communicates with the main control system (e.g., 505XT, or MicroNet via a gateway) over the LinkNet-HT (High-Temperature) network. This is a robust, high-speed, and deterministic CANopen-based communication protocol. LinkNet-HT allows the I/O modules to be distributed throughout the plant, closer to the sensors and actuators. This significantly reduces complex wiring runs, minimizes signal degradation, and enhances overall system flexibility. The “HT” in LinkNet-HT signifies its capability to operate reliably in environments with higher ambient temperatures and vibrations.
• High Accuracy and Reliability: Woodward modules are known for their precision and durability. The 8200-1203 provides accurate analog-to-digital conversion for inputs and digital-to-analog conversion for outputs, ensuring reliable data acquisition and precise control. It’s built to withstand the rigors of industrial operations.

The 8200-1203 is a direct upgrade or alternative to the 8200-1202. The key distinction is the integrated loop power on the 8200-1203, which is a significant advantage for installations requiring powered 4-20 mA inputs.

Key Features and Benefits:

• Integrated 24 VDC Loop Power: Directly powers 2-wire 4-20 mA transmitters from the module, simplifying wiring and reducing external power supply needs.
• 8 Analog Input Channels (4-20 mA): High density for monitoring numerous process variables.
• 2 Analog Output Channels (4-20 mA): For precise control of proportional actuators.
• LinkNet-HT Communication: Robust, distributed I/O for reliable operation in harsh environments.
• High Accuracy and Reliability: Ensures precise data acquisition and control.
• Reduced Wiring Complexity: The integrated loop power significantly simplifies field wiring.
• Cost-Effective: Can reduce installation costs by minimizing external power supplies and wiring.

4. Technical Specifications (General, as precise details can vary slightly by manual version):

5. Typical Applications:

The WOODWARD 8200-1203 is exceptionally well-suited for industrial applications requiring precise measurement of multiple analog process variables and a limited number of analog control outputs, especially where simplifying sensor wiring is a priority.

• Gas and Steam Turbines: Monitoring various pressures (fuel, oil, atomizing air), flows (fuel, lube oil), valve positions (governor valve feedback), where the sensors are 2-wire 4-20 mA transmitters that can be directly powered by the module, and sending commands to a few critical proportional valves.
• Compressor Stations: Monitoring suction/discharge pressures, flow rates, and controlling recirculation or bypass valves, often with field instruments powered by the module itself.
• Process Control: General industrial processes (e.g., in chemical plants, refineries) requiring the monitoring of numerous analog signals from 2-wire transmitters and a few analog control adjustments.
• Engine Control: Monitoring engine parameters like oil pressure, fuel pressure, and controlling proportional fuel valves or EGR valves, utilizing the integrated loop power for sensors.