Product Description:

The DMA 140D 4201-D servo drive module is produced by Bosch Rexroth Indramat and belongs to the DMA Servo Drive Modules series. It is a three-phase power stage for synchronous and asynchronous motors, supplying regulated DC-link energy and closed-loop current control to connected windings. Within an automation cell, it mounts on a shared backplane, converting rectified supply power into pulse-width-modulated output used to govern torque and speed in axes found in machining centers, packaging systems, and material-handling equipment.

During operation, the module draws 24 V control power of 1.58 A, a figure that helps size auxiliary supplies for the rack. Thermal management relies on backplane air cooling, with two integrated fans moving air across the heat sink. The non-regulated DC link reaches 715 VDC, while the regulated bus is limited to 670 VDC so the controller can guard attached axes from overvoltage. For short open-loop demands, the drive supplies up to 141 Arms, whereas the continuous closed-loop rating is 87 Arms. These current capabilities indicate the peak and sustained torque available to the downstream motor and connected load.

The unit occupies the RMD/DM backplane slot and measures 200 mm wide, 288 mm deep, and 521.5 mm high, dimensions that reserve cabinet space and air paths. Under worst-case loading, the semiconductor stage dissipates 700 W as heat, so the cabinet must provide adequate heat extraction. The aluminum chassis, filters, and hardware weigh 19.3 kg. Command data enter through an analog speed-and-torque setpoint channel that the internal converter resolves with 16-bit granularity, while gear-, STG-, or MTG-type encoder inputs close the feedback loop. Internal impellers maintain airflow as the module links synchronous or asynchronous machines to the rack’s common DC bus.