Product Description:

The KDA 3.2-100-3-LYS-W1 is a spindle drive module manufactured by Bosch Rexroth Indramat as part of the KDA Spindle Drives series. Deployed in machining centers and other numerically controlled equipment, the drive forms the link between a shared DC bus and the spindle motor it powers. By modulating current and voltage in real time, it lets the automation controller maintain precise speed profiles that are essential for drilling, milling, and grinding operations. This supports stable spindle behavior during load changes, speed transitions, and other demanding machining cycles.

The power section operates from a DC link stabilized at 300 VDC, supplying up to 100 A of continuous current to the connected motor. Thermal energy produced during high-load cycles is removed by a heat sink-mounted blower that is fed from an auxiliary 220 V, 50/60 Hz source. Because air is driven directly across the fins, the cooling method is forced cooling rather than passive convection. Within a controlled enclosure, the drive maintains full output across an ambient range of 5 to 45 degrees Celsius, so it can operate through normal factory temperature changes without reduced performance. This airflow arrangement helps the power stage remain thermally stable during prolonged acceleration and sustained spindle demand.

The drive maintains full performance up to 1000 m above sea level, allowing installation in most production plants without altitude-related limitations. Command and diagnostic data are exchanged through a fiber-optic SERCOS interface, while parameter access is available through the built-in serial interface (RS-232-C). For axis synchronization or spindle orientation tasks, the drive provides a second encoder input and synchronous input, letting the control system correlate spindle position with auxiliary axes. This combination supports coordinated motion, closed-loop spindle functions, and reliable data exchange with the surrounding control system. The drive is built as series 3 and version 2.