KDA 3.2-050-3-L00-U1 Bosch Rexroth Indramat
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MPN: R911265150
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The Bosch Rexroth Indramat KDA 3.2-050-3-L00-U1 is a spindle drive from the KDA Spindle Drives series with a rated current of 50 Amps and operates on a DC supply voltage of 300 Volts. It uses forced cooling through a mounted heatsink blower, powered by a 115V AC source at 50-60Hz, and supports speed command values via a SERCOS interface.
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Product Description:
The KDA 3.2-050-3-L00-U1 is a spindle drive built by Bosch Rexroth Indramat in the KDA Spindle Drives series. As a spindle drive, it converts regulated DC power from a shared supply into three-phase output for precise speed and torque control in high-speed machine tool spindles and similar automation axes. The unit accepts speed references from CNC or PLC controllers and modulates the connected motor accordingly, serving as the electrical interface between machine control hardware and the mechanical spindle. In machine tools, this supports stable spindle behavior during acceleration, steady cutting operation, and commanded speed changes across the working range.
The power stage is rated for 50 A of continuous output, so the connected spindle motor can run under nominal process loads without derating. A DC link voltage of 300 VDC supplies the energy level against which the inverter section switches current. Thermal management uses a mounted heatsink blower powered from a dedicated 115 V/50-60 Hz source, and forced cooling removes heat from the power semiconductors before it affects control stability. Because the blower is supplied separately, heat removal does not depend on spindle speed. Speed references arrive over the digital SERCOS interface, enabling synchronous command exchange with other drive axes. The design does not include a second encoder channel, so feedback must come through the primary resolver or encoder input on the spindle motor.
The drive is specified to operate in ambient air from 5 to 45 °C, and installation is permitted up to 1000 m above sea level before derating is required because reduced air density lowers cooling performance. These installation limits matter in enclosed cabinets where airflow and surrounding temperature directly affect available current. It is configured with no additional interface option, so optional analog or relay cards are not included. The simplified interface layout keeps wiring limited to the standard power, control, and primary feedback connections used by the drive, which suits systems that rely on the base control path without added expansion hardware.
Frequently Asked Questions about KDA 3.2-050-3-L00-U1:
Q: What cooling method does the KDA 3.2-050-3-L00-U1 spindle drive utilize?
A: This model uses a mounted heatsink blower with forced cooling to maintain optimal operating temperatures.
Q: What AC source is needed for the heatsink blower on the KDA 3.2-050-3-L00-U1?
A: The KDA 3.2-050-3-L00-U1 requires an AC source of 115V at 50-60Hz to power its heatsink blower.
Q: What is the permissible ambient temperature range for the KDA 3.2-050-3-L00-U1?
A: This spindle drive is designed to operate at ambient temperatures ranging from 5 to 45 degrees Celsius.
Q: What is the rated current specification of the KDA 3.2-050-3-L00-U1?
A: The rated current for the KDA 3.2-050-3-L00-U1 spindle drive is 50 A.
Q: What type of interface is used for speed command value in the KDA 3.2-050-3-L00-U1?
A: The KDA 3.2-050-3-L00-U1 uses a SERCOS interface for speed command value communication.
