Product Description:

The MAC090B-0-PD-2-C/130-B-0/S012 is an AC servo motor produced by Bosch Rexroth Indramat within the MAC AC Servo Motors series. It is intended for closed-loop motion axes in industrial automation where analog velocity or torque commands are still in use. By combining permanent-magnet excitation with integrated tacho feedback, the unit converts drive controller signals into controlled rotary motion for positioning tables, material-handling stations, and similar equipment. This arrangement supports stable speed regulation in machines that continue to rely on established analog control hardware.

Mechanical fit uses a centering diameter of 130 mm, allowing the flange to align precisely with gearboxes or machine frames. The electrical design follows winding code PD, which sets coil resistance and inductance so the drive can deliver rated torque without saturation. A nominal speed of 1500 rpm establishes the base operating point, and the analog drive electronics reference this value during speed regulation. Heat generated in the stator is removed through natural convection, so no external blower or coolant circuit is required for continuous duty at the stated load. Power conductors enter through a connector on side B, keeping cables at the rear of the machine and leaving side A clear for the shaft and coupling.

The velocity loop is closed by integrated tacho feedback, and its calibration factor is a back EMF of 3 V/1000 rpm. This voltage is read by the analog drive to track real-time shaft speed and correct command deviations during operation. As a motor for analog drives, the unit pairs directly with legacy controllers that output ±10 V commands rather than digital fieldbus data. It is supplied without a blocking brake, so any vertical axis must rely on external mechanical locks or holding torque from the drive when power is disabled. The tacho assembly is built to provide a consistent speed signal during normal operation.