Configured for actuator loop feedback response and prime mover position control in turbine governor systems, the Woodward 8200-188 (8200-188 Rotary Actuator) provides direct physical/electrical execution. This hardware component translates internal servo control signals into mechanical shaft rotation, utilizing proportional feedback mechanisms to maintain precise fuel valve positioning under continuous thermal and mechanical stress.

Suffix Breakdown & Model Matrix

• 8200-188: Base rotary actuator configuration featuring standard mechanical mounting interfaces and integrated feedback sensing for industrial governor networks.

Hardware Specifications

Actuator Loop Feedback Response and Thermal Profiles

The unit executes closed-loop control dynamics by utilizing an internal feedback loop that matches electrical command inputs to mechanical shaft position with high repeatability. Thermal heat sink dissipation profiles are integrated into the cast housing to manage internal coil temperatures during high-frequency modulation cycles. Harmonic distortion suppression circuitry within the terminal compartment filters electrical noise from incoming control signals, ensuring stable dynamic response across variable prime mover operating speeds.

Frequently Asked Questions

Q: What is the primary function of the internal feedback circuit in this rotary actuator?

A: The internal feedback circuit provides continuous position verification of the output shaft, transmitting a proportional signal back to the governor controller to ensure precise loop closure and minimal hysteresis.

Q: How should the mechanical linkage be aligned during initial mounting to prevent binding?

A: The linkage must be aligned strictly parallel to the actuator shaft rotation plane, ensuring zero side-load stress on the internal bearings throughout its full mechanical stroke range.

Field Installation Guidelines

• Mount the actuator securely to a rigid, vibration-damped machine bracket using grade hardware matching the housing mounting hole specifications.
• Connect shielded control and feedback cabling to the terminal block, terminating the outer shield 360 degrees to the enclosure earth ground stud to prevent electromagnetic interference.
• Verify that external mechanical linkages move freely by hand through the full operating arc prior to applying electrical power or hydraulic/pneumatic supply pressure.