DM 15K 5311-D Bosch Rexroth Indramat
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The Bosch Rexroth Indramat DM 15K 5311-D is a servo drive from the DM Servo Drives series with a compact design, weighing 6.0 kilograms and measuring 430 mm in height and 50 mm in width. It features positioning control, a resolver encoder interface with 12-bit resolution, and operates at a maximum current of 15 Arms with a maximum output frequency of 800 Hz. This drive supports a regulated DC link of 670 VDC and supplies an output voltage of three-phase 400 V.
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Product Description:
The DM 15K 5311-D servo drive is produced by Bosch Rexroth Indramat and belongs to the DM Servo Drives series. Designed for positioning control, it converts high-energy three-phase power into precisely regulated current for synchronous or induction servomotors used in industrial automation. Within a machine cell, the unit receives 24 V command signals from the central motion controller and sends resolver feedback upstream, enabling closed-loop axis regulation for pick-and-place modules, indexing tables, and conveyor zones. This arrangement lets the drive correct motor response as load conditions change during acceleration, stopping, and repeated positioning cycles. Because current regulation is handled inside the drive, the higher-level controller can focus on motion commands rather than direct motor power conversion.
Its 24 V control electronics draw a maximum steady current of 0.89 A, so the logic supply can be sized with minimal overhead. On the power side, the inverter section delivers up to 15 Arms during open-loop transients, while its closed-loop continuous limit is 7.4 Arms. These current ratings support motors supplied from 3ph 400 V, allowing the drive to operate in standard industrial power systems. Speed resolution is maintained because the carrier switches at 8 kHz, and the sine-wave output can reach 800 Hz, allowing mechanically small motors to run at elevated shaft speeds without field weakening. Separate control and power stages also help the unit maintain stable command processing while output demand changes with the motion profile. That operating range suits axes that need quick speed changes without sacrificing smooth current delivery at the motor terminals.
Total power dissipation is limited to 121 W, so cabinet ventilation can often be handled by forced-air plenums instead of liquid cooling. The enclosure uses a compact mechanical format and measures 430 mm in height and 50 mm in width, while the 6.0 kg mass supports dense multi-axis rack layouts. Internally, the regulated DC link is stabilized at 670 VDC, giving the modulator headroom for dynamic braking and rapid direction changes. A 12-bit resolver interface and a 24 V motion setpoint port integrate the drive into PLC-based motion systems without additional converters. The narrow housing also helps conserve panel space where several axes are installed side by side. This layout supports modular cabinet arrangements where shared wiring and clear airflow paths are important.
