KDA 3.3-150-3-API-W1

The Bosch Rexroth Indramat KDA 3.3-150-3-API-W1 from the KDA Spindle Drives series is a specialized module main spindle drive controller designed for high–performance motor control. It delivers a rated current of 150 A and a continuous current of 90 A at a rated voltage of 300 V, making it ideal for demanding C-axis operations and numerically controlled machines. This controller’s primary function is to manage frameless spindle and asynchronous spindle motors, ensuring precise speed and torque control across a broad speed range.

Built on a modular design, the KDA 3.3-150-3-API-W1 features an IP10 protection housing that can be upgraded to IP54 when installed in an external cabinet, enhancing durability in industrial environments. Its integrated heat control mechanism employs an internal blower powered by an attached AC 50–60 Hz supply to dissipate hot air through dedicated air vents. The controller accepts an analog speed command value (±10 V) and includes an auxiliary encoder input for spindle or second motor feedback, ensuring accurate position and speed regulation.

In addition to robust protection and thermal management, this drive controller features a DC bus operating at 300 V and compatibility with frameless 1MB spindle motors and INDRAMAT 2AD asynchronous motors. Weighing only 17.4 kg, it is easy to install and maintain in tight spaces. The KDA 3.3-150-3-API-W1’s energy-efficient design minimizes power losses, while its modular architecture allows flexible integration into existing control systems. Certified to withstand harsh industrial conditions, it delivers reliable performance, reduced downtime, and enhanced productivity in high-precision manufacturing applications.