Product Description:

The DMA 004A 4101-D is a servo drive module produced by Bosch Rexroth Indramat for the DMA Servo Drive Modules series. Designed as a three-phase converter for synchronous and asynchronous motors, it channels DC bus energy into regulated stator currents so a single axis can be positioned with tight control. The unit forms the power stage of compact automation cells, enabling indexing tables, gantry axes, and other motion tasks that depend on precise velocity and position loops implemented by the associated controller.

At a 4 kHz switching frequency, the module supplies a continuous phase current of 2.7 Arms, with overload capability up to 5.6 Arms for acceleration transients. Its common DC link operates on two reference levels: a regulated rail held at 670 VDC for normal duty and a non-regulated ceiling of 715 VDC that appears when regenerative energy elevates the bus voltage. Logic and sensor circuits are supported by a separate 24 V input that draws only 1.0 A. Above the specified +45 °C limit, output current is derated by 0.15 A per kelvin. Heat is removed through back-plane air cooling, and the open-style IP20 housing allows the airflow required for that method while protecting users from live conductors.

The control chain maintains an analog command resolution of 16 bits, while internal motion generation works with 32 bits and position storage uses 20 bits; these numerical depths support the module’s additional one-axis positioning function without external interpolators. During operation, the power stage dissipates up to 94.3 W, a value accounted for in cabinet thermal calculations. Mechanical data include a 7.3 kg mass, a 50 mm module width, and shock resistance rated to 15 g, ensuring compatibility with high-density racks on moving machinery. Continuous service is permitted from 0 °C to the stated upper limit, provided airflow across the backplane is unobstructed.