Industrial O-57002 Preset Speed Control Board

The O-57002 (also listed as 0-57002) Preset Speed Interface Board from Reliance Electric is a compact auxiliary drive card that provides a preset-speed interface for Reliance drive systems. Measuring about 2 inches by 2.5 inches, the board carries a white underside, a single standoff at the bottom center, two side-up tabs, and a front face labeled with Instr. Interface, Max Spd, and Min Spd references. It includes a two-position terminal strip marked + and −, two potentiometers, a COM connector, two pins labeled 5MA and 50MA, two op-amp ICs, plus several diodes, resistors, capacitors, and metal clips labeled 326, 56, 71, 57, and 26. For installation and operation, it is designed as a preset-speed interface within Reliance drive architectures and is frequently listed for MinPak Plus series drives; vendor descriptions also note that Reliance boards are commonly cataloged under Asea Brown Boveri or Baldor-Reliance parts.