Product Description:

Manufactured by Bosch Rexroth Indramat, the DM 8K 5111-D belongs to the DM Servo Drives series and functions as a compact servo drive module for multi-axis industrial automation. It conditions the DC link of a shared supply and delivers regulated current to connected servomotors while accepting 24 V control logic signals from a motion controller. The unit supports internal positioning control, allowing point-to-point moves without requiring an external PLC to manage every axis command. Because it works within a shared power architecture, it suits machines where several axes must run in coordinated sequences.

The drive maintains an unregulated DC link of 715 VDC that is stabilized to 670 VDC by its internal electronics, providing a constant energy reservoir for rapid torque changes. At a carrier frequency of 2 kHz, it can deliver a peak phase current of 8 A, while the higher-switching 8 kHz mode limits that peak to 7.1 Arms to reduce switching losses. Thermal design caps continuous dissipation at 96.5 W, so enclosure airflow must keep the heat sink below its rated temperature during sustained duty cycles. Control electronics draw only 0.89 A from the 24 V auxiliary supply, minimizing the load on low-voltage power systems. A motion-control setpoint interface and an STG/MTG encoder channel with 20-bit and 32-bit resolutions support tight velocity and position loops. Fieldbus commands can trigger stored positioning functions, which helps the axis handle short indexing moves with less dependence on the central controller.

The housing is 430 mm tall and 50 mm wide, allowing dense rack installation, and its steel chassis and heat sink together weigh 6.0 kg. The narrow profile leaves room for adjacent modules and helps keep cabinet wiring organized in compact control panels. Mechanical rigidity helps the encoder interface remain stable during vibration and repeated axis reversals. The compact format also supports retrofit work in existing cabinets where mounting space is limited.