Product Description:

The MAC090A-0-ZD-2-C/110-B-0 is an AC servo motor engineered by Bosch Rexroth Indramat within the MAC AC Servo Motors series. It acts as the mechanical output stage for analog velocity and position loops, turning control voltages into regulated shaft rotation for material handling stations, gantries, and assembly cells. The design integrates a tacho generator so the drive can close a speed feedback loop without external sensors, making it a common choice for legacy automation platforms that still rely on analog command structures and straightforward closed-loop control.

The motor seats against machinery using a centering recess whose diameter measures 110 mm. This feature aligns the shaft precisely with couplings and reduces radial stress on the bearings. Heat is removed by natural convection, meaning airflow around the housing is sufficient and no fan or external coolant is required. Rotor speed under rated load is set at 1500 min⁻¹, giving moderate output frequency that matches many gear ratios found in transfer lines. Velocity data comes from integral tacho feedback, allowing the analog controller to monitor actual speed directly from the motor during steady operation. For wiring convenience, the three-phase supply enters through a connector on side B, so cable routing can stay clear of moving linkages on the opposite face.

The tacho generator outputs 3 V/1000 min⁻¹, giving the drive a linear voltage reference it can scale for precise speed correction. Magnetic characteristics follow the ZD winding, a code that indicates resistance and inductance values suited to mid-range current demands. Classified as a motor for analog drives, the unit interfaces directly with older Rexroth power stages that transmit command and feedback signals as continuous voltages rather than fieldbus packets. Because there is no blocking brake, holding torque during power-off must be provided by external mechanics or the gearbox, which simplifies the motor housing and reduces inertial load on acceleration. The tacho quality is standard, which suits general-purpose speed loops.