KDA 3.2-150-3-AP0-U1 Bosch Rexroth Indramat
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MPN: R911228571
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The Bosch Rexroth Indramat KDA 3.2-150-3-AP0-U1 is a spindle drive from the KDA Spindle Drives series. It has a rated current of 150 Amps and operates with a DC supply voltage of 300 Volts. The device uses a forced cooling system with a mounted heatsink blower operating at 115V and is intended for use in ambient temperatures from 5 to 45 degrees Celsius.
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Product Description:
The KDA 3.2-150-3-AP0-U1 spindle drive is produced by Bosch Rexroth Indramat within the KDA Spindle Drives series. Designed for closed-loop control of high-speed machine-tool spindles, the unit converts a regulated DC bus into three-phase output while monitoring position and velocity through encoder signals. By integrating power electronics and motion control in a single-axis module, it simplifies automation cabinets and supports rapid drilling, milling, and grinding processes. That operating profile suits machine tools that must move through acceleration, steady cutting, and controlled deceleration without losing feedback continuity.
In operation, the drive draws its power from a 300 VDC link and can deliver up to 150 A of armature current to the spindle motor, allowing high cutting torque during demanding cycles. Thermal management relies on a mounted heat sink blower that pushes air directly across the power modules, and this blower is energized by a separate 115 V/50-60 Hz AC branch so cooling can remain active even when the DC bus is disabled. The unit uses forced cooling, so the enclosure needs a clear exhaust path rather than depending on natural airflow. Separate blower power also helps remove stored heat after intensive spindle operation. Because there are no additional communication boards installed, all command and diagnostic exchange is handled through the base terminals, which keeps the electrical interface direct and easy to follow.
The drive is specified for continuous use between 5 to 45 °C, and installation altitudes can reach 1000 m above sea level without adjustment. Setpoints enter the unit as an analog speed command, so the higher-level controller must provide a proportional reference signal for spindle regulation. A dedicated second encoder input accepts spindle or auxiliary motor feedback, enabling accurate orientation during tool changes while leaving the main encoder channel available for real-time speed control. Using separate feedback paths supports applications that need both precise spindle positioning and stable running-speed regulation within the same control structure.
Frequently Asked Questions about KDA 3.2-150-3-AP0-U1:
Q: What is the rated current of the KDA 3.2-150-3-AP0-U1 spindle drive?
A: The KDA 3.2-150-3-AP0-U1 spindle drive supports a rated current of 150 A.
Q: How is the KDA 3.2-150-3-AP0-U1 spindle drive cooled?
A: The drive utilizes a mounted heatsink blower for forced cooling.
Q: What DC supply voltage does the KDA 3.2-150-3-AP0-U1 require?
A: The DC supply voltage for this model is specified at 300 VDC.
Q: What is the maximum installation elevation for the KDA 3.2-150-3-AP0-U1?
A: Operation of the KDA 3.2-150-3-AP0-U1 is supported up to 1000 meters above sea level.
Q: What type of speed command value does the KDA 3.2-150-3-AP0-U1 accept?
A: The speed command value for this spindle drive is entered as an analogue signal.
