KDA 3.2-100-3-AQD-U1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.2-100-3-AQD-U1 is a spindle drive from the KDA Spindle Drives series and operates with a rated current of 100 Amps and a 300 VDC supply voltage. It uses forced cooling with a mounted heatsink blower powered by a 115V AC source at 50-60Hz, and supports digital position command and analog speed command value interfaces. The drive can be installed at elevations up to 1000 meters and functions in temperatures ranging from 5 to 45 degrees Celsius.
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Product Description:
The KDA 3.2-100-3-AQD-U1 spindle drive is built by Bosch Rexroth Indramat and belongs to the KDA Spindle Drives series. As a member of Series 3, Version 2, it regulates high-speed machining spindles by converting DC bus energy into controlled three-phase output. Within an automation cell, the drive supplies torque and speed commands to a connected motor, letting the CNC controller vary spindle velocity during cutting, drilling, or grinding operations. Because spindle demand can change quickly with tool engagement, the drive is intended for applications that need responsive speed correction and consistent torque delivery through the cut.
The drive draws its DC link energy from a 300 VDC supply and can deliver a rated output of 100 A to the armature. Heat produced by its IGBT stack is removed through a mounted heat sink blower, and cooling is maintained by forced cooling. The blower uses an auxiliary feed of 115 V/50-60 Hz, so the cabinet must provide that single-phase circuit. Airflow across the heat sink helps remove switching losses from the power electronics without relying on passive convection alone. This cooling arrangement helps the power stage remain stable during rapid load changes and continuous spindle operation.
For reliable service, the unit is specified for ambient temperatures from 5 to 45 °C and may be installed at elevations up to 1000 m above sea level without derating. Control electronics interpret an analog speed command value from the motion controller and can also accept a digital position command value for synchronized spindle orientation. That capability is useful on machines that must align the spindle to a fixed angle before clamping, tool change, or synchronization with a feed axis. These separate command paths support threading, C-axis functions, and other machine cycles that require both continuous rotation and indexed stopping. The input structure also allows the drive to switch between speed regulation and position-related tasks without interrupting normal spindle control.
Frequently Asked Questions about KDA 3.2-100-3-AQD-U1:
Q: What is the rated current of the KDA 3.2-100-3-AQD-U1 spindle drive?
A: The KDA 3.2-100-3-AQD-U1 operates with a rated current of 100 A, accommodating high power spindle applications.
Q: How is the KDA 3.2-100-3-AQD-U1 cooled during operation?
A: This spindle drive uses a forced cooling system with a mounted heatsink blower to maintain operational temperatures.
Q: What type of additional interfaces are available on the KDA 3.2-100-3-AQD-U1?
A: The KDA 3.2-100-3-AQD-U1 supports additional digital position command value interfaces for precise position control.
Q: What power supply is needed for the KDA 3.2-100-3-AQD-U1 heatsink blower?
A: A 115V AC power supply at 50-60Hz is required for the heatsink blower of this model.
Q: What is the maximum allowable installation elevation for the KDA 3.2-100-3-AQD-U1?
A: The maximum installation elevation for this drive is 1000 meters above sea level, allowing for deployment in moderate altitude locations.
