DM 15K 3101-D Bosch Rexroth Indramat
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The Bosch Rexroth Indramat DM 15K 3101-D is a compact servo drive from the DM Servo Drives series with a mass of 6.0 kilograms and a module width of 50 millimeters. It features air cooling, a standard encoder interface, and an analog 12-bit setpoint interface. The drive delivers up to 18 Amps maximum current at 4 kHz open loop and supports DC link voltages of 670 VDC regulated and 715 VDC non-regulated.
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Product Description:
Bosch Rexroth Indramat manufactures the DM 15K 3101-D, a servo drive in the DM Servo Drives series. This compact module controls and regulates synchronous motors in automated machinery, converting setpoint commands into precise current and voltage outputs for closed-loop motion. Designed for cabinet installation and cooled by forced air, the unit integrates easily with motion controllers through its analog command interface and standard encoder feedback. Its footprint and mass suit multi-axis systems where space and weight are constrained.
In operation, the drive draws its DC bus from a non-regulated link of 715 VDC that is internally stabilized to 670 VDC when regulation is engaged, giving the power stage a predictable voltage ceiling. At a 4 kHz carrier it furnishes up to 18 A rms during open-loop excursions and sustains 11 A rms in closed-loop duty; both limits drop to 15 A and 7.4 A when the switching frequency is set to 8 kHz. Heat generated by the IGBTs and snubbers is limited to 121 W, so cabinet airflow can remove it without dedicated liquid cooling. Control signals arrive through the 12-bit analog setpoint port, and rotor position is captured by the standard encoder interface.
The auxiliary 24 V control rail is rated at 0.89 A, permitting low-power standby while fieldbus or safety circuits remain energized. The module has a compact design, supported by a width of just 50 mm and a shipping mass of 6.0 kg, allowing high-density stacking on DIN rails or backplanes. Air-cooled channels direct flow across the heat sink fins, matching the previously noted loss budget. For position-oriented tasks, the drive forwards single-turn feedback with 20-bit resolution and captures absolute shaft cycles with a multi-turn depth of 32 bits, enabling precise homing after power interruptions. These data services integrate seamlessly through the standard encoder connector without additional interface cards.
