Product Description:

The DMA 85B 4101-D is a servo drive module engineered by Bosch Rexroth Indramat for the DMA Servo Drive Modules series. It is designed as a three-phase controller for synchronous and asynchronous motors, converting incoming DC bus energy into controlled motor current and speed for multi-axis machinery. In a rack-based drive system, the module supplies the power stage for positioning, tensioning, and coordinated motion tasks. Its housing fits a Servodyn-D rack in a single-slot format, which helps conserve cabinet space when multiple axes are installed side by side.

With a front panel width of 100 mm, the module maintains a compact profile for dense cabinet mounting. Heat is removed by backplane air cooling, which directs airflow along the rear bus area and allows neighboring modules to share the same exhaust path. Motor feedback connects through a standard feedback interface, supporting common incremental or absolute encoder arrangements. Command values and diagnostic signals use a 16-bit analog interface, allowing fine reference steps for accurate speed or torque control. The drive includes no additional functions, which keeps the configuration straightforward and avoids unused auxiliary circuitry.

The unit is supplied as the standard variant, so its feature set matches the baseline configuration used within this platform. It uses the rack-based format of the platform, which keeps the axis section compact in multi-axis cabinets. The drive handles axis power conversion, while higher-level motion control remains in the host system. That separation lets the module focus on controlled power delivery to the connected motor rather than on machine-level sequencing or display tasks. The compact arrangement helps keep cabinet layouts orderly when several axes are grouped in one enclosure for automated equipment.