8200-226 Servo Position Controller | Woodward

The Woodward 8200-226, also cataloged as the SPC Servo Position Controller, operates as a dedicated hardware component for proportional and integrating servo valve positioning within industrial control platforms.

Hardware Specifications

Actuator Loop Feedback Response and Load Management

The 8200-226 regulates actuator loop feedback response by processing demand signals via DeviceNet or 4-20 mA inputs. The controller supports dual-redundant AC position feedback sensors or a single DC feedback device. Proper heat dissipation is required to manage the 20 W thermal load; controllers must be mounted in locations shielded from high-current electromagnetic interference and moisture. The unit utilizes Windows-based software for parameter tuning and real-time monitoring of actuator drive output. When configuring the output, ensure the drive current limits are correctly mapped to the specific servo valve coil resistance to prevent thermal overload of the driver stage.

Frequently Asked Questions

Q: Does the 8200-226 require external fusing for the power input?

A: Yes. The power supply line must be protected by a 5 A, 125 V fuse capable of withstanding a 20 A, 100 ms inrush current upon power-up. Failure to use properly rated protection may result in internal circuit damage during power-on transients.

Q: Is this controller compatible with both proportional and integrating servo valves?

A: Yes. The 8200-226 is firmware-configurable to support the positioning dynamics of both proportional and integrating servo valve types through the provided software interface.

Field Installation Guidelines

• Mounting: Install the controller in a clean, dry environment protected from high-voltage transients and high-current electrical noise. Ensure adequate air circulation to dissipate the 20 W heat load.
• Wiring: Maintain strict separation between high-power actuator lines and low-voltage feedback signal wiring. All feedback signals should be routed using shielded cables with the shield grounded at the controller common point to minimize noise injection.
• Software Configuration: Use the designated Windows-based configuration utility to perform initial calibration of feedback sensors and verify the tuning parameters before placing the valve under active control.
• Connection: Inspect all terminal connections for tightness. Use torque-limited screwdrivers to avoid damaging terminal block pins during installation.