KDA 3.2-050-3-DP0-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.2-050-3-DP0-W1 is a spindle drive from the KDA Spindle Drives series, featuring forced cooling with a mounted heatsink blower. This Series 3, Version 2 spindle drive operates on a 300 VDC supply voltage and supports a rated current of 50 Amps. It accepts digital speed commands with 16 bit parallel input and provides a second encoder input for spindle or additional motor feedback.
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Product Description:
The KDA 3.2-050-3-DP0-W1 is a closed-loop drive module manufactured by Bosch Rexroth Indramat for the KDA Spindle Drives series. Installed in multi-axis machine-tool cabinets, the drive converts a stabilized DC bus into controlled three-phase power so that high-speed motor spindles can follow numeric speed commands with short response times. Its integrated heat sink blower and digital control electronics make it suitable for continuous machining tasks where precise spindle speed regulation is essential to surface finish and tool life. This type of drive is commonly used where a CNC must hold commanded spindle speed as cutting load changes during drilling, milling, or turning operations.
The power section is energized from a 300 VDC intermediate circuit, while the dedicated heat sink blower operates from an auxiliary 220 V at 50/60 Hz source so cooling remains independent of the main DC bus. Because the blower is mounted directly on the heat sink, the unit uses a heatsink-mounted blower and forced cooling to keep semiconductor junctions within their intended temperature range during high-current events. The converter can deliver a continuous output of 50 A, allowing it to drive medium-size spindle motors without derating. A second encoder input is available so the controller can process spindle feedback or additional motor feedback when multi-turn positioning accuracy is required. Separating the blower supply from the intermediate circuit allows airflow to continue independently of changes in spindle output demand.
The drive is intended for ambient temperatures from 5 to 45 °C and for installation at elevations up to 1000 m above sea level. The speed reference reaches the control logic through a 16-bit digital parallel interface, which avoids the conversion errors common to analog voltage inputs. The provided I/O set supports fault signaling, drive enabling, and the programmable parameters needed for routine machining cycles. These connections allow the module to exchange status information with the surrounding control cabinet and respond to external enable or fault conditions.
Frequently Asked Questions about KDA 3.2-050-3-DP0-W1:
Q: What rated current does the KDA 3.2-050-3-DP0-W1 support?
A: The KDA 3.2-050-3-DP0-W1 operates with a rated current of 50 A, allowing for high-output spindle drive performance.
Q: What type of speed command input does the KDA 3.2-050-3-DP0-W1 accept?
A: This spindle drive supports a digital 16-bit parallel speed command value for precise control.
Q: How is the KDA 3.2-050-3-DP0-W1 cooled during operation?
A: A mounted heatsink blower provides forced cooling for effective heat dissipation.
Q: What is the required DC supply voltage for the KDA 3.2-050-3-DP0-W1?
A: The allowed DC supply voltage for this unit is 300 VDC.
Q: What is the maximum elevation at which the KDA 3.2-050-3-DP0-W1 can be installed?
A: The maximum installation elevation for this spindle drive is 1000 meters above sea level.
