The 140263 Digital Reference Adapter Board, part of Allen-Bradley's Bulletin 1395 series, serves as a vital interface between external devices and the 1395 MCB in DC drive systems. It efficiently processes digital reference inputs from single or dual-channel encoders that operate on 5 or 12 Volts DC and support frequencies up to 102.5 kHz, ensuring accurate motor control. Designed for seamless integration, this board accommodates signals from user-operated control devices through 10 discrete, 24 Volts DC-rated inputs with LED indicators and supports a range of analog connections for diverse control tasks. Located in the lower left of the 1395 DC drive, its installation and connectivity are streamlined via a microbus interface and easily accessible terminal block, enhancing the functionality and reliability of your DC motor management system.