Product Description:

The KDA 3.2-050-3-LQ0-W1 spindle drive is produced by Bosch Rexroth Indramat as part of the KDA Spindle Drives series. Intended for machine-tool and other production equipment, the unit converts regulated DC power into three-phase output for high-speed spindle motors while supervising load and temperature. Inside a multi-axis cabinet the drive functions as the dedicated spindle axis; digital speed references reach it over a fiber ring, and an integrated heatsink blower makes external ducting unnecessary.

The power section operates from a bus voltage of 300 VDC, and its output channel can supply a continuous phase current of 50 A. Speed commands are received through a SERCOS interface, allowing setpoints and diagnostics to travel on the same optical network used by other Indramat drives. Heat is removed by a mounted heatsink blower; the fan is energized by an auxiliary line rated at 220 V, 50–60 Hz, and the airflow is guided across fins bonded to the IGBT modules. The unit follows a forced cooling scheme, so the blower runs whenever the drive is enabled in order to keep semiconductor junction temperatures within allowable limits.

Environmental limits specify an ambient range of 5 to 45 °C; operation outside this window requires additional conditioning to prevent derating. Installation is permitted up to 1000 m above sea level, where reduced air density still allows the blower to maintain sufficient airflow. Hardware identifiers list series code 3 and version 2, confirming firmware alignment with matching supply modules of the same generation. Because the option list includes no additional interface option, all fieldbus communication, diagnostics, and parameter downloads must pass exclusively through the primary SERCOS channel. These criteria help integrators verify cabinet ventilation, select appropriate transformers for the 300 V bus, and ensure that altitude and temperature comply with the drive’s thermal model.