Product Description:

The DMA 85B 4201-D is a servo drive module produced by Bosch Rexroth Indramat and supplied within the DMA Servo Drive Modules series. It serves as the power and control interface between a motion controller and three-phase synchronous or asynchronous motors, delivering regulated current and speed commands in automated machinery such as packaging lines, material-handling axes, and assembly gantries. By integrating into a common backplane rack, the module helps organize multi-axis systems in a compact cabinet layout and supports consistent electrical interconnection across the rack.

This module uses backplane air cooling, meaning heat is removed by airflow across the rear heat sink inside the rack rather than by an external liquid circuit. Position feedback is accepted through a gear encoder, allowing feedback pickup from geared mechanisms where mechanical reduction is part of the axis layout. Command values and diagnostic data travel over an analog interface with 16-bit resolution, providing fine reference scaling for torque or velocity control. The housing is 100 mm wide, which helps conserve panel space, and it functions as a three-phase module for synchronous and asynchronous motors so one drive platform can be used with either motor type.

The module has no extra functional blocks, so the feature set remains focused on the base drive functions without additional integrated options. It is associated with the Servodyn-D series, which indicates compatibility with components that use the same communication timing and control structure. The unit is supplied as the standard variant, providing the baseline configuration for this model. Its layout supports orderly rack installation, and the analog command structure allows straightforward integration with control systems that use conventional reference signals.