KDF 1.2-150-300-W1-115

The Bosch Rexroth Indramat KDF 1.2-150-300-W1-115 drive from the KDF Variable Frequency Drives series is a 2nd version high-performance variable-frequency solution designed for industrial motor control. It features a rated current of 150 A and a rated voltage of 300 V DC for robust torque delivery. The unit accepts a 220 V AC input and provides a 300 V DC output with a rated output current of 100 A and a peak output current of 300 A. Integral to its design is a differential analog command input that ensures compatibility with any standard control system and simplifies interconnection.

Engineered to drive motors up to 25 hp, the KDF 1.2-150-300-W1-115 enables seamless four-quadrant operation and precise positioning over a wide speed range of 0 to 8000 RPM. A microprocessor-based digital velocity loop replaces traditional variable-frequency control, dramatically reducing drift and maintaining proportional speed accuracy even under load variation. At zero RPM, an enhanced stiffness characteristic resists speed disturbances and delivers peak system torque on demand. The drive’s firmware optimizes stiffness and stability to the industry standard, making it ideal for applications requiring tight velocity regulation.

Thermal management is handled by a forced-air heatsink blower, keeping the power electronics within safe operating limits. The KDF 1.2-150-300-W1-115 supports a maximum continuous power rating of 150 W and incorporates a bleeder circuit rated at 40 kW peak for safe discharge of DC-link energy. Weighing 20.4 kg, this compact drive mounts easily in control cabinets alongside Indramat modular AC servo controllers and shares a common power supply to build cost-effective brushless motor systems. Backed by a one-year warranty, the Rexroth variable frequency drive delivers dependable performance for demanding automation tasks.