Product Description:

The DMD02.1-W082N is a compact servo drive created by Bosch Rexroth Indramat for the DMD Servo Drives series. Within an automation cell, the unit sits between the line supply and a matched servomotor, converting fixed-frequency three-phase input into regulated pulses that control torque, speed, and position. By executing closed-loop current and voltage control, it enables precise axis movement for packaging, material-handling, or machine-tool functions while minimizing component count in the cabinet. Its compact format also helps when panel space is limited and separate motion hardware must be kept to a minimum.

During steady operation, the drive draws a three-phase input of 4.0 A and can deliver a continuous motor phase current of 4.3 A. These values indicate expected conductor loading and help with protective device sizing in the panel. The rated mechanical output is 750 W, which supports motors in this output class without derating. A Transistor PWM (Sine Wave Drive) output stage shapes the waveform so that the motor receives near-sinusoidal current, which helps reduce audible noise and torque ripple. For position feedback, the unit uses an Incremental (2500 P/R, 10 Wires) encoder, allowing standard differential signals for velocity feedback and commutation.

For transient events such as acceleration or rapid indexing, the current capability rises to 18.3 A, providing short-term torque well above the continuous rating. Excess kinetic energy is handled by the internal regeneration circuit, which can dissipate 1600 W in bursts and maintain a steady bleed of 5 W during braking. A DC-link bank storing 26.73 J helps smooth these energy exchanges, limiting bus fluctuation during changes in speed and direction. This stored energy supports stable operation during repeated deceleration and helps reduce brief voltage spikes on the supply side.