Thông số kỹ thuật servo motor Allen bradley: The Allen-Bradley/Rockwell MPL series servo motor with the product code MPL-B680F-SJ74AA is a low inertia servo motor with a frame size of 215 millimeters. The motor has a rated rotor speed of 3000 revolutions per minute and it features a single-turn high-resolution encoder and a shaft key. The MPL-B680F-SJ74AA servo motor has a magnet stack length of 8 inches and a voltage class rating of 400 Volts.