KDA 3.2-050-3-DYS-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.2-050-3-DYS-W1 is a spindle drive from the KDA Spindle Drives series with a rated current of 50 Amps and a DC supply voltage of 300 V. It features forced cooling with a mounted heatsink blower and operates within an ambient temperature range of 5 to 45 degrees Celsius. This drive includes a serial RS 232 C interface, a second encoder input, and supports a digital 16-bit parallel speed command.
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Product Description:
The KDA 3.2-050-3-DYS-W1 is a spindle drive produced by Bosch Rexroth Indramat and belongs to the KDA Spindle Drives series. The unit is version 2 and serves as the power stage between a machine-tool controller and a high-speed spindle motor. By modulating DC bus energy into three-phase output current, it provides the torque and speed regulation needed for milling, drilling, and grinding centers. It is intended for machines that require stable spindle behavior during acceleration, deceleration, and constant-speed cutting. In closed-loop operation, the controller can adjust spindle torque quickly as tool load changes.
Electrical performance centers on a DC link rated at 300 VDC, from which the converter can deliver up to 50 A of continuous output to the attached spindle motor. Speed reference data arrives as a digital 16-bit parallel word, giving the CNC fine command resolution during speed changes. Runtime diagnostics and parameter transfer are handled through a serial RS-232-C channel, allowing setup through a laptop or terminal and access to operating data. The drive is part of Series 3, and these interfaces allow command and diagnostic data to be exchanged without additional converters. The parallel command path helps the spindle follow programmed speed setpoints during rapid feed transitions and tool changes.
A forced cooling system moves air across the heat sink with a blower powered from a 220 V, 50-60 Hz auxiliary supply. This airflow helps keep internal temperatures under control when the ambient temperature remains between 5 °C and 45 °C, reducing thermal stress during continuous spindle loading. The auxiliary blower supply is separate from the main DC link, so cooling can be maintained independently of the spindle power stage. The integrated second encoder input supports spindle orientation or electronic gearing without an extra module, and it can be used when synchronized motion requires additional feedback. Installation is permitted up to 1000 m above sea level, while higher elevations may require output derating.
Frequently Asked Questions about KDA 3.2-050-3-DYS-W1:
Q: What cooling method is used in the KDA 3.2-050-3-DYS-W1 spindle drive?
A: This drive features forced cooling using a mounted heatsink blower for efficient thermal management.
Q: What is the DC supply voltage requirement for the KDA 3.2-050-3-DYS-W1?
A: The KDA 3.2-050-3-DYS-W1 operates with a DC supply voltage of 300 VDC.
Q: What is the rated current for the KDA 3.2-050-3-DYS-W1 drive?
A: This model supports a rated current of 50 A for spindle operations.
Q: What additional interface options are provided on the KDA 3.2-050-3-DYS-W1?
A: A serial interface (RS 232 C) is available for additional connectivity.
Q: What is the maximum installation elevation for the KDA 3.2-050-3-DYS-W1?
A: The drive can be installed at elevations up to 1000 meters above sea level.
