DM 015K 3301-D Bosch Rexroth Indramat
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The Bosch Rexroth Indramat DM 015K 3301-D is part of the DM Servo Drives series and has a mass of 6.0 kg. It features a resolver encoder interface with 12-bit resolution and an analog 12-bit setpoint interface. This drive offers an output voltage of 3-phase 400 V, a rated current of 7.4 Arms at 8 kHz, and supports output frequencies from 0 to 800 Hz.
Internal Product Review
The DM 015K 3301-D is a Bosch Rexroth Indramat servo drive with 3-phase 400 V output and a 0-800 Hz output frequency. Resolver feedback with 12-bit resolution supports precise motion tuning and dependable closed-loop response. Rated at 7.4 Arms with 15 Arms overload current, this drive stands out as a capable choice for demanding servo applications.
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Product Description:
Bosch Rexroth Indramat’s DM Servo Drives series includes the DM 015K 3301-D, a compact servo inverter that conditions DC-bus energy and delivers precisely controlled three-phase power to synchronous or induction motors in automated machinery. Used with resolver feedback, it forms the link between a motion controller and the mechanical load, providing velocity and torque regulation for gantries, packaging stations, and process lines. All power electronics fit inside a slim 50 mm housing, allowing multiple axes to be installed side by side on the same backplane. The compact enclosure also reduces the amount of panel space required for multi-axis machine configurations.
The drive’s control logic is energized by a 24 V supply and draws 0.89 A, so a small auxiliary supply can support standby operation and fieldbus communication. Internal capacitors are charged to a DC-link voltage of 670 VDC or 715 VDC, giving the power stage sufficient headroom for dynamic acceleration. During rapid indexing, the current can reach 15 Arms under overload conditions. Above this overload point, the hardware derates by 0.23 A for every kelvin increase at an 8 kHz switching frequency. Thermal dissipation does not exceed 121 W, allowing the 6.0 kg module to operate in compact cabinets without additional cooling ducts.
The output section delivers frequencies from 0–800 Hz at a line-to-line output of three-phase 400 V, providing broad speed coverage for high-pole servo motors and standard industrial spindles. Continuous operation at 7.4 Arms is possible when the unit operates at an 8 kHz switching frequency, helping keep motor heating within acceptable limits. Position feedback is obtained through a resolver with 12 bits of single-turn resolution. The analog setpoint interface also uses 12-bit conversion to receive velocity or torque commands accurately. This interface allows analog control signals to pass directly to the drive without requiring a separate signal converter.
