KDA 3.2-150-3-APD-U1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.2-150-3-APD-U1 is a spindle drive from the KDA Spindle Drives series and operates with a rated current of 150 Amps and a DC supply voltage of 300 VDC. This model features forced cooling through a mounted heatsink blower and supports a second encoder input for spindle or additional motor feedback. It has an AC source for the heatsink blower rated at 115V and functions within an ambient temperature range of 5 to 45 degrees Celsius.
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Product Description:
The KDA 3.2-150-3-APD-U1 is a spindle drive unit manufactured by Bosch Rexroth Indramat for the KDA Spindle Drives series. It converts intermediate-circuit power into precisely regulated three-phase output for high-speed machine-tool spindles and similar automation axes. This operating role makes it suitable for applications that require stable torque and speed regulation during demanding motion cycles. Series code 3 and version 2 indicate the product generation used for this drive type.
The power section is energized from a direct-current link rated at 300 VDC, which provides the voltage margin needed for rapid acceleration and regenerative braking. Under continuous operation, the drive can deliver up to 150 A of output current, so it can sustain large torque demands without saturating the control electronics. A dedicated heatsink blower supplied from an auxiliary line of 115 V 50/60 Hz removes semiconductor losses during operation. The cooling mode is forced cooling, so airflow is actively directed through the fin channel rather than relying on cabinet convection. Motion commands enter through a digital position command value interface that transmits step or incremental data, while velocity is adjusted through an analog speed command value input. This arrangement allows position and speed references to be handled through separate channels for coordinated spindle control.
The allowable ambient range is 5–45 °C, which supports installation in typical shop-floor enclosures without auxiliary chillers. Operation is permitted up to 1000 m elevation before output derating may be required. For applications that need rotor-angle tracking or master-slave synchronization, the drive includes a second encoder input. This input can accept either spindle feedback or an additional motor encoder. It allows extra control-loop feedback without requiring an external splitter module.
Frequently Asked Questions about KDA 3.2-150-3-APD-U1:
Q: What is the rated current of the KDA 3.2-150-3-APD-U1 spindle drive?
A: This spindle drive operates with a rated current of 150 A.
Q: How is the KDA 3.2-150-3-APD-U1 spindle drive cooled?
A: The KDA 3.2-150-3-APD-U1 uses forced cooling with a mounted heatsink blower.
Q: What is the AC source requirement for the heatsink blower in the KDA 3.2-150-3-APD-U1?
A: The heatsink blower runs on an AC source of 115V at 50-60Hz.
Q: What is the maximum installation elevation for the KDA 3.2-150-3-APD-U1?
A: Installation is recommended at elevations up to 1000 meters above sea level.
Q: What type of speed command value does the KDA 3.2-150-3-APD-U1 accept?
A: This model accepts an analogue speed command value.
