KDA 3.2-050-3-APS-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.2-050-3-APS-W1 is a spindle drive from the KDA Spindle Drives series with a rated current of 50 Amps and operates with a DC supply voltage of 300 VDC. It features forced cooling via a mounted heatsink blower and supports an ambient temperature range of 5 to 45 degrees Celsius. The drive includes a serial interface (RS 232 C) and a second encoder input for spindle or additional motor feedback.
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Product Description:
The KDA 3.2-050-3-APS-W1 spindle drive is built by Bosch Rexroth Indramat as part of the KDA Spindle Drives series. The drive is in series 3 and version 2. Designed for machine tools and automation centers, the unit converts a fixed DC bus into a controlled three-phase output that regulates spindle speed and torque. By acting as the main power stage between the CNC controller and the motor, it supports closed-loop velocity control for precision machining. It is intended for use where accurate spindle control is required for cutting and other rotary processes.
It draws energy from a DC link rated at 300 VDC and can supply up to 50 A of continuous output to the spindle motor. Thermal stability is maintained by forced-air cooling, and the blower is powered from a dedicated 220 V line operating at 50–60 Hz. Inside the specified ambient range of 5 to 45 °C, the drive processes analog speed command values to generate the required three-phase waveform for the motor. The analog command path lets the drive respond directly to external speed references from the control system. Air is directed across the heat sink fins to remove switching losses, keep semiconductor temperatures within allowable limits, and support continuous current operation during extended spindle duty.
Installation is permitted at elevations up to 1000 m above sea level without adjustment to the stated operating conditions. Communication with supervisory equipment is available through a RS-232-C serial interface, which supports parameter exchange and diagnostic access. A second encoder input can be used for spindle feedback or additional motor feedback on synchronized axes. This extra feedback channel is useful in applications that require coordinated motion with another axis. The cooling assembly uses a mounted heat sink blower rather than external ducting, which keeps the airflow path directly on the drive.
Frequently Asked Questions about KDA 3.2-050-3-APS-W1:
Q: What type of cooling is used in the KDA 3.2-050-3-APS-W1 spindle drive?
A: The KDA 3.2-050-3-APS-W1 spindle drive uses a mounted heatsink blower and forced cooling to maintain optimal operating temperatures.
Q: What is the rated current of the KDA 3.2-050-3-APS-W1 spindle drive?
A: This model has a rated output current of 50 A, suitable for demanding spindle applications.
Q: What AC voltage is required for the heatsink blower of the KDA 3.2-050-3-APS-W1?
A: The AC source for the heatsink blower on this unit is 220V at 50-60Hz.
Q: What communication interface is available on the KDA 3.2-050-3-APS-W1?
A: The KDA 3.2-050-3-APS-W1 supports a serial interface (RS 232 C) for additional connectivity and integration needs.
Q: What is the maximum installation elevation for the KDA 3.2-050-3-APS-W1 spindle drive?
A: This spindle drive can be installed at elevations up to 1000 meters above sea level.
