Product Description:

The MAC090B-0-PD-4-C/110-A-1/WI522LV is a servo motor produced by Bosch Rexroth Indramat for the MAC AC Servo Motors series. As a motor for analog drives, it converts drive-amplifier commands into precise shaft motion for positioning and velocity tasks in automated machinery. The model is installed on machine axes that require repeatable mid-range torque, such as feed drives, conveyors, and assembly stations, where controlled rotation must track an external command signal from legacy analog controllers. Its electromechanical design supports both incremental encoder and tachometer feedback so closed-loop regulation can be achieved on equipment that predates fieldbus motion networks.

The mechanical interface includes a centering diameter of 110 mm, allowing direct seating in standard motor flanges without spacer rings. Heat is removed through natural convection, so operation relies on ambient airflow rather than forced fans. Under rated conditions, the rotor turns at 1500 min⁻¹, a speed that simplifies gear-ratio selection for moderate dynamic tasks. Power conductors reach the stator windings through a connector on side A, keeping cabling on the same face as the machine tool spindle when the motor is front-mounted. The motor uses the PD winding code, which sets resistance and inductance values that the analog amplifier uses to generate correct current loops. Position data are delivered by an incremental encoder mounted in the standard fixture, while a discrete tachometer provides velocity feedback.

A standard blocking brake engages when supply power is removed, holding the shaft to prevent back-driving on vertical or indexing axes. Velocity feedback from the tachometer is scaled at 3 V/1000 min⁻¹, giving the drive electronics a linear analog signal for closed-loop speed regulation. The feedback loop can also use the absolute encoder channel to obtain direct position signals without relying on external reference devices. The motor uses standard tacho quality, which limits voltage ripple and supports stable analog control performance.