Product Overview

The Woodward 8200-226 serves as a high-definition Servo Position Controller designed to bridge the gap between electronic control systems and hydraulic or pneumatic actuators. This module translates low-level demand signals into precise, high-current bipolar drive outputs to position servo valves with sub-millisecond latency. Primarily utilized in turbine and reciprocating engine applications, the 8200-226 ensures exacting fuel metering and frequency stability. We provide this unit as 100% Brand New and Original, serving as the definitive performance upgrade for legacy 8200-224 and 8200-225 models.

Technical Specifications

Engineering Advantages

• Superior Positioning Accuracy: The 11-bit high-definition control resolution allows the 8200-226 to execute minute adjustments in valve position. This precision minimizes "hunting" and maintains ultra-stable engine speeds under varying load conditions.

• Flexible Signal Integration: This driver accepts multiple input formats, including 4–20 mA and PWM. This multi-protocol compatibility simplifies integration into diverse control architectures, from legacy analog governors to modern digital DCS systems.

• High-Current Bipolar Drive: The module delivers up to $\pm 250$ mA of bipolar current. This robust output capacity enables the controller to drive heavy-duty industrial servo valves directly without the need for auxiliary amplification.

• Extreme Environment Durability: Woodward engineers this module for an expansive temperature range (–40°C to +70°C). The ruggedized housing and protected internal circuitry withstand the thermal stress and vibration common in marine engine rooms and power generation enclosures.

• Seamless Legacy Migration: The 8200-226 features the same form factor and electrical characteristics required to replace older 8200-224/225 units. This ensures a low-risk hardware refresh that restores system reliability while utilizing existing mounting and wiring.

FAQs

1. Is the Woodward 8200-226 a direct replacement for the 8200-225?

Yes. Woodward designed the 8200-226 as the primary functional and electrical upgrade for both the 8200-224 and 8200-225. It provides improved signal stability and higher thermal efficiency while remaining compatible with existing system parameters.

2. How do I configure the output current range?

The bipolar output current (ranging from $\pm 10$ mA to $\pm 250$ mA) is software configurable. This allows the driver to be finely tuned to the specific impedance and requirements of your particular hydraulic or pneumatic servo valve.

3. What protection features does this controller include?

The module incorporates comprehensive protection circuitry, including reverse polarity protection for the 24VDC input, overvoltage protection to guard against power surges, and short-circuit protection to prevent board failure in the event of field wiring issues.

4. Does this module support both hydraulic and pneumatic actuators?

Yes. Provided the actuator is controlled via a standard servo valve compatible with the $\pm 250$ mA drive range, the 8200-226 can manage positioning for both hydraulic fuel racks and pneumatic steam valves.