KDA 3.2-150-3-AP0-W1 Bosch Rexroth Indramat
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MPN: R911228570
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The Bosch Rexroth Indramat KDA 3.2-150-3-AP0-W1 is a spindle drive from the KDA Spindle Drives series, featuring forced cooling with a mounted heatsink blower supplied by 220V at 50-60Hz. This series 3, version 2 drive has a rated current of 150 Amps, operates on a 300 VDC supply voltage, and works in ambient temperatures from 5 to 45 degrees Celsius. It includes an analog speed command value, supports second encoder input for spindle or motor feedback, and is designed for installation up to 1000 meters above sea level.
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Product Description:
The KDA 3.2-150-3-AP0-W1 spindle drive is produced by Bosch Rexroth Indramat as part of the KDA Spindle Drives series. It acts as the closed-loop power stage that regulates torque and speed for high-speed spindles in machining centers and other automated equipment. By converting energy from a shared DC bus into controlled three-phase outputs, the unit supports precise spindle positioning, acceleration, and deceleration under CNC command. This arrangement allows the spindle axis to respond quickly to changing process demands while maintaining stable motion during cutting and speed changes.
Internally, the power section is supplied from a common bus at 300 VDC, so the installation must include a matching rectifier or regenerative supply. Continuous output capability reaches 150 A, giving the drive enough current capacity for large spindle motors during sustained operation and high-demand acceleration. Thermal limits are managed by a mounted heat sink blower that expels waste heat directly from the rear panel, and this blower is energized from an auxiliary line rated at 220 V/50-60 Hz. The cooling system operates in a forced-cooling mode, helping maintain acceptable semiconductor temperatures when cabinet air remains between 5 to 45 °C. Rear-panel heat removal also helps keep the internal power section stable during extended spindle duty.
The unit can be installed up to 1000 m above sea level without changing the stated thermal or electrical values. Command input is processed through an analog reference channel, allowing direct connection to controllers that provide variable speed commands. For position-oriented processes, the drive includes a second encoder input, so direct spindle feedback or supplementary motor feedback can be routed into the control loop. Diagnostics remain straightforward because the hardware is supplied with no additional interface option, and control and monitoring are handled through the built-in drive circuitry. Component numbering follows series 3, version 2, matching the corresponding Indramat controller generation.
