DMA 045A 6311-D

The Bosch Rexroth Indramat DMA 045A 6311-D from the DMA Servo Drive Modules series is a three-phase inverter module designed for precision motion control. It features a 24 VDC current input of 1.32 A, an Input Voltage of 670 V, and an Output Voltage of 400 V to drive servo and asynchronous motors. The module generates a stabilized DC voltage of 670/715 V DC for the inverter section, ensuring consistent power delivery. With a compact profile of 521 mm height and 50 mm width, it integrates seamlessly into backplane assemblies.

The DMA 045A 6311-D employs forced convection cooling with two built-in fans to maintain thermal stability under demanding loads. It supports selectable 4 kHz and 8 kHz switching frequencies and dissipates 220 W of power during normal operation. Ambient operating conditions range from 0 °C to +45 °C, and an IP20 protection class safeguards internal electronics from dust and contact. A PROFIBUS-DP interface coupled with a VeCon chip provides high-speed communication for real-time control of speed, position, and torque.

Integration with Bosch Rexroth’s Servodyn-D inverter system enables unified management of power supply and axis modules. A 12-bit resolver encoder interface offers precise feedback for closed-loop applications, while compatibility with SR, SF, DU, and built-in motors ensures versatility. The DMA 045A 6311-D delivers energy-efficient performance for automation systems that demand reliability and compact design.