Woodward 8200-226 | High-Precision Servo Position Controller

Product Parameters

• Model Number: 8200-226
• Series: SPC (Servo Position Controller)
• Input Power: 18–32 VDC (24 VDC Nominal)
• Analog Inputs: 4–20 mA or 0–5 VDC position demand
• Output Drive: Integrated driver for proportional hydraulic/pneumatic actuators
• Communication Interface: RS-232 for service/configuration; DeviceNet or CANopen (specific to revision)
• Resolution: 16-bit Analog-to-Digital conversion
• Operating Temperature: -40°C to +85°C

Product Description

The Woodward 8200-226 is a specialized Servo Position Controller (SPC) designed to provide precise positioning of proportional actuators. It functions as a standalone digital controller that accepts a position demand signal from a master control system and drives an actuator to match that demand via a closed-loop feedback system. The 8200-226 is engineered for high dynamic response and stability, featuring programmable PID logic that can be tuned to match the specific characteristics of the connected hydraulic or pneumatic machinery. Its robust, compact design allows it to be mounted near the actuator, reducing wiring complexity and signal interference.

Application Fields

This controller is primarily used in the power generation and aerospace industries for controlling fuel valves, steam turbines, and variable vane actuators. It is essential for any application requiring high-accuracy motion control of large-scale mechanical components, particularly in gas turbine fuel metering and steam turbine bypass systems where reliable, high-speed positioning is critical for operational safety and efficiency.

Product Specifications

• Weight: 1.10 kg
• Dimensions: 155 mm x 110 mm x 50 mm
• Origin: USA
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Operational Precautions

• Ensure that the 24V DC power source is filtered and regulated to prevent voltage spikes from damaging the internal microprocessor.
• Always calibrate the feedback sensor (LVDT or Potentiometer) within the Woodward service tool after installation to ensure the physical stroke matches the digital demand.
• Verify that the output current limits are correctly set for the specific actuator coil to prevent overheating or permanent coil failure.
• Use shielded, twisted-pair cabling for all analog signal paths and ensure the shield is grounded at only one end to prevent ground loops.

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