BEI Sensors EM-DR1-AD-15-TB-28V Anti-Dither Module

BEI Sensors EM-DR1-AD-15-TB-28V/V is a DIN-rail mounted electronic module that provides an anti-dither function for encoder signals, conditioning two encoder channels (A and B) to produce cleaner A’ and B’ outputs while the index Z channel passes through unmodified. Housed in BEI’s DR1 DIN rail package, the unit measures 114.5 mm by 99 mm by 22.5 mm and uses a terminal-block (TB) connection scheme for straightforward field wiring. The model specifies a 12–15 V DC supply to power the anti-dither circuitry, and, for this variant, the 28V/V designation indicates the A’/B’ outputs mirror the module’s input voltage (with the Z channel remaining passed through as an optically isolated signal). This module is designed for incremental encoder applications where mechanical vibration can introduce dithering, helping to maintain reliable edge timing and reduce feedback errors in DIN-rail control systems. In practice, EM-DR1-AD devices are used to interface encoders with motion controllers and other automation circuitry, delivering a compact, openly documented solution within BEI Sensors’ electronic module family now part of Sensata Technologies.