The Woodward SPM-D2-10 8440-2166A is a sophisticated speed controller from the SPM-D series, engineered to provide precise speed regulation and comprehensive protection for rotating equipment such as turbines, engines, and compressors. This system utilizes advanced digital signal processing to monitor rotational speed in real-time, comparing it against predefined setpoints to maintain optimal operating conditions. The controller features multiple protection functions including overspeed detection, underspeed monitoring, and rate-of-change acceleration protection to prevent catastrophic equipment damage. It supports various input types including magnetic pickups and proximity sensors, and offers configurable output signals for integration with control systems. The rugged design ensures reliable operation in harsh industrial environments, with immunity to electrical noise, wide temperature tolerance, and vibration resistance. Typical applications include power generation plants, oil and gas facilities, and industrial manufacturing where precise speed control and equipment protection are critical for safety and operational efficiency. The 8440-2166A designation indicates specific configuration options tailored for particular applications, while maintaining compatibility with Woodward's broader ecosystem of control products.

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