286566-02 Speed Monitor

The Bently Nevada 3500/50M 286566-02 is a dual-channel tachometer module for the 3500 machinery protection system. It processes signals from proximity probes or magnetic pickups to measure shaft speed, rotor acceleration, and rotation direction. The module compares readings against user-programmable alarm setpoints and can supply conditioned Keyphasor® signals to the 3500 rack backplane, eliminating the need for a separate module. It features a peak hold function that stores maximum speed and reverse rotation data for post-event analysis.