Product Description:

The Bosch Rexroth Indramat DM 4K 1301-D belongs to the DM Servo Drives series and functions as a compact servo drive module for multi-axis automation systems. The unit converts regulated DC link energy into three-phase motor currents, enabling precise torque and velocity control on assembly lines, packaging machines, and material-handling stations. Drive electronics, fieldbus communication, and thermal monitoring are combined in a single enclosure, simplifying cabinet layout for high-density installations.

During operation the internal DC bus is maintained at 670 / 715 VDC, allowing energy exchange with the common supply module. At a 4 kHz PWM carrier the drive can deliver a peak phase current of 6.6 / 6.4 Arms (open-loop / closed-loop) while its continuous capability is 1.4 / 4.0 Arms under the same switching frequency. Thermal load rises with temperature, so permissible current decreases by 0.15 A/K above the reference value; at 8 kHz the reduction slope is 0.10 A/K. The worst-case semiconductor losses reach 96.5 W, heat that must be removed by panel airflow. Resolver feedback enters through a dedicated connector and motion data is streamed to the controller over the fiber-optic SERCOS ring. Mechanical packaging is limited to a 50 mm module width and the device weighs 6.0 kg, facilitating side-by-side mounting.

Logic circuits draw 0.89 A from the auxiliary 24 V supply, isolating low-level control power from the high-energy DC link. When the carrier frequency increases to 8 kHz the drive supports momentary currents of 6.6 / 4.7 Arms and sustains 0.8 / 2.5 Arms continuously, a profile that favors quieter motor operation for noise-sensitive work cells. Position accuracy is upheld because the resolver signal is interpolated to 12 bits, giving sufficient resolution for indexing tables, small gantries, and vision-guided pick-and-place axes.