RPM Checker

The RPM Checker analyzes a measured shaft speed against an expected nominal speed to identify performance drift in motor drives. It supports technicians, plant engineers, and reliability teams by providing a repeatable, data-driven method to verify correct operation after commissioning, gear changes, or maintenance. Conceptually, the tool computes deviation as a percentage of nominal speed and flags out-of-spec conditions. When a gear ratio is provided, it also suggests the corresponding motor-side target RPM to align with gearbox expectations. This helps isolate whether observed drift originates at the motor, drive train, or gearbox. The tool preserves a clear audit trail of inputs, calculated deviations, and recommended actions for compliance and maintenance planning. Core differentiators include explicit handling of missing inputs, zero or invalid nominal speeds, and gear ratio validation to prevent misinterpretation of results. Use cases span initial commissioning checks, periodic maintenance validation, and fast diagnostics after a fault or alarm. Outputs include status (OK or ALERT), deviation percentage, motor_rpm_target (when gear_ratio is supplied), and a recommended_action that is concise and actionable for technicians. The approach emphasizes domain-specific correctness and traceability without relying on UI assumptions, enabling integration into diagnostic scripts, CMMS notes, or enterprise dashboards.