Product Description:

The KDA 3.2-150-3-DP0-W1 is a spindle drive manufactured by Bosch Rexroth Indramat and belongs to the KDA Spindle Drives series. The unit converts fixed DC bus energy into controlled three-phase output for high-speed machine-tool spindles and other industrial axes that demand rapid speed regulation. Within a multi-axis cabinet, it works with Indramat supply modules, provides torque control, and accepts digital speed references so the automation controller can maintain precise cutting or positioning under varying mechanical loads. By regulating output frequency and current, it helps the connected spindle maintain commanded speed when cutting forces or inertial changes disturb the axis.

The drive draws power from a common DC bus at 300 VDC and can deliver up to 150 A of continuous output current to the spindle motor. A two-word, 16-bit bus supplies the velocity reference, and the digital 16-bit parallel command format permits direct coupling to numeric controls without analog drift. The parallel reference path is suited to control architectures that exchange speed commands as discrete digital data instead of analog voltage signals. Thermal energy from the output stage is removed by a mounted heat sink blower that operates on an auxiliary supply of 220 V at 50/60 Hz. Because airflow is forced across the fins, the unit uses forced cooling, which helps the module remain stable during dynamic acceleration cycles and repeated speed changes.

The drive operates in ambient temperatures from 5 to 45 °C and at elevations up to 1000 m above sea level, which fits standard industrial environments without derating. A dedicated connector accepts spindle feedback or additional motor feedback, enabling phase-synchronous positioning when multiple motors share the axis supply. The extra feedback connection can support applications that monitor the spindle and motor separately during synchronized motion. The model has no additional interface option, so only the control line and encoder links need routing inside the cabinet. This arrangement keeps the connection layout straightforward while still supporting the required feedback paths for spindle control.