The Allen-Bradley 1391B-AA45N, a part of the 1391 Servo control series, is designed for precision motion and position control in manufacturing applications. This open-frame servo controller offers peak current limit adjustment from 20% to 200% of the rated motor current and operates with a minimum efficiency of 85% at rated load, utilizing modulation frequencies of +/- 2500 Hz. Suitable for various linear and rotary applications, it supports 230-volt, 3-phase input and features multiple power options with continuous stall torque capabilities ranging from 0.096 to 5.42 N-m. Engineered with smart motor technology, it includes 17-bit high-resolution positioning and absolute encoder capabilities, ensuring robust performance even in complex environments. With frame sizes from 46 to 115 millimeters, an optional 24-volt brake, and IP43 seal standards, this servo controller delivers reliable control with compact efficiency.