DMA 85B 3301-D by Bosch Rexroth Indramat

The DMA 85B 3301-D from Bosch Rexroth Indramat is a high-performance module in the DMA Servo Drive Modules series designed for precise motion control in industrial automation. This servo amplifier accepts a 670V DC input voltage and handles an input current of 33A, delivering robust power for demanding applications. Its wide frequency range of 0–800 Hz enables fine speed adjustments and dynamic response, making it ideal for complex production processes.

Equipped with an Integrated Fan Cooling system, the DMA 85B 3301-D maintains optimal operating temperatures even under continuous load. The drive features a 3-phase 400V output voltage at 31A output current, ensuring compatibility with a variety of motor types. A switching frequency of 8 kHz maximizes energy efficiency by reducing switching losses while maintaining high control bandwidth. The unit’s power supply is a dedicated DC source, and it accepts 3-Phase voltage input to deliver consistent performance in heavy-duty environments.

Built as a rugged drive controller, the DMA 85B 3301-D offers enhanced durability and reliability for long-term industrial use. Its precise control capabilities support seamless integration with standard industrial systems and motor feedback loops. The efficient cooling design and high switching frequency contribute to reduced energy consumption and lower thermal stress on internal components. In industrial applications, this drive amplifier delivers improved productivity, tighter speed regulation, and dependable operation, making it a valuable asset for automation engineers seeking efficiency and performance in servo-driven machinery.