Product Description:

The Bosch Rexroth Indramat DM 45K 3301-D is a modular servo drive in the DM Servo Drives series. It converts line power into precisely regulated motor voltage and current so automated tooling, conveyors, or packaging stations can track high-speed motion profiles with closed-loop accuracy. Integrated resolver conditioning, analog setpoint decoding, and an air-cooled power stage let the unit serve as a compact axis amplifier that fits standard control cabinets without auxiliary chillers.

At a switching frequency of 4 kHz, the drive can deliver a continuous phase current of 23.5 Arms, while peaks up to 47.5 Arms are available for acceleration or load disturbances. Selecting 8 kHz switching reduces thermal loading, so the continuous rating becomes 16.5 Arms and the permissible short-term surge is 35 Arms. Internal losses under full load are limited to 205 W, a figure that helps with cabinet heat management. Control electronics use a separate 24 V supply that draws only 1.4 A, so standby consumption remains low even when the main power stage is disabled.

Operation above 40 °C requires predictable derating. At 4 kHz, output capability falls by 0.6 A/K between 45 °C and 55 °C, or by 0.5 A/K over the same span when 8 kHz switching is selected. The resolver feedback interface works with a resolution of 12 bits, which keeps position error within one motor electrical degree for most medium-inertia axes. An analog 12-bit setpoint channel accepts velocity or current references from the motion controller, ensuring deterministic command latency. The drive has a 75 mm module width, a front height of 452.5 mm, and a mass of 6.7 kg, which helps with space planning and mounting hardware selection in multi-axis cabinets. Airflow across the heatsink maintains junction temperatures without external liquid circuits.