8200-226 Woodward Servo Position Controller

Woodward 8200-226 Servo Position Controller Introduction & Technical Specifications
Product Introduction
Brand: Woodward
Model: 8200-226
Product Name: SPC Electro-Hydraulic Servo Position Controller
Origin: United States
HS Code: 8537109170

Detailed Technical Parameters
The controller adopts standard cabinet-mounted metal shell structure, with overall external dimensions of 329mm × 203mm × 65mm and a net weight of 1.55kg. The standardized panel mounting design supports fixed installation inside control cabinets, with neat terminal layout, convenient wiring and rapid disassembly replacement for routine maintenance.
The rated nominal operating voltage is 24V DC, with an effective stable input range of 18V DC to 32V DC to adapt to voltage fluctuation of industrial DC power supply. The typical static power consumption is 20W; the maximum inrush current lasts 100ms and is limited within 20A, with standard 5A fuse overcurrent protection configured. The valve driving output supports configurable current range from ±10mA to ±250mA, which can match various servo valve coil impedances; analog position input supports standard 4–20mA current signal, and the input impedance is stabilized above 21.8kΩ.
It adopts 11-bit digital conversion resolution, full-scale linearity error controlled within 0.1%, equipped with 6ms low-pass filter to smooth output fluctuation. It reserves dual feedback signal access channels, supporting one group of DC displacement sensors or two groups of redundant AC LVDT/RVDT sensors for position feedback collection, effectively improving system fault tolerance. Two standard communication interfaces are configured: DeviceNet industrial bus for system networking linkage and RS-232 service port for local parameter configuration, program debugging and real-time data monitoring.
The long-term stable operating temperature range is -40℃ ~ +70℃, storage temperature covers -40℃ ~ +85℃. It can continuously work under relative humidity of 5%–95% non-condensing environment; mechanical vibration resistance reaches 0.7g within 5–2000Hz frequency band, and impact resistance is 30g half-sine pulse for 11ms. The protection grade is IP20, suitable for indoor cabinet installation; internal circuit adopts 500Vrms node isolation design to suppress industrial electromagnetic crosstalk and signal interference.
Built-in full-process real-time self-diagnosis program, it automatically detects power supply abnormality, feedback signal loss, communication disconnection and drive circuit overload faults. LED indicator lights on the panel clearly display power status, operation state and fault alarm, helping maintenance staff quickly locate abnormal points.
Core Product Characteristics
High-precision closed-loop control algorithm and 11-bit high resolution ensure ultra-stable valve positioning accuracy, effectively reducing unit speed fluctuation and equipment operation vibration.
Dual redundant feedback access design improves system anti-fault ability, avoiding control failure caused by single sensor damage, greatly enhancing the safety of key equipment operation.
Dual signal access mode of 4–20mA analog and DeviceNet digital bus brings strong system compatibility, which can seamlessly connect Woodward governor systems and third-party DCS control platforms.
Wide-range DC power supply adaptation and multi-level electrical protection structure resist industrial power surge, short circuit and overload damage, extending long-term service life of the controller.