DMA 085B 7301-D

The Bosch Rexroth Indramat DMA 085B 7301-D is a precision three-phase drive module in the DMA Servo Drive Modules series by Bosch Rexroth Indramat. This module accepts an Input Voltage of 670 V DC and delivers a regulated Output Voltage of 400 V to synchronous and asynchronous motors. Auxiliary power is supplied via a 24 VDC current input of 1.35 A for control electronics. Built to IP54 protection, the unit is mounted inside a switch cabin with integrated air-dust filters for harsh industrial environments.

The DMA 085B 7301-D employs dual innovative RMB/DM Type 2 fans for forced air cooling, maintaining optimal heat dissipation at ambient temperatures from 0 °C to +45 °C. Above +46 °C up to +55 °C, the module automatically applies a derating factor of 1.25 A to preserve reliability. Its compact footprint measures 100 mm width and the total mass is 11.5 kg, enabling high-density rack installation. Rated for elevations up to 1,000 meters above sea level (with additional derating to 3,000 meters), the drive excels in both lowland and high-altitude applications.

Precision feedback is provided by a 20-bit single-turn encoder and a 12-bit resolver interface, while an optional 32-bit multi-turn encoder supports up to 4,096 absolute revolutions for advanced positioning tasks. Robust construction and global shipping eligibility include a standard one-year warranty from Wake Industrial. By combining flexible voltage ratings, intelligent cooling, and high-resolution feedback, the DMA 085B 7301-D offers a turnkey solution for sophisticated servo drive architectures.