Product Description:

The DKR02.1-W300N-BA36-01-FW is a digital intelligent AC drive controller produced by Bosch Rexroth Indramat within the DKR Drive Controllers series. The unit conditions three-phase mains power and executes torque and velocity commands for large servo and spindle motors, making it suitable for machining centers, gantry systems, and other precision automation equipment. It acts as the power and regulation stage between the supply network and the motor, converting incoming electrical energy into controlled output for accurate motion. Its line 02 platform and version 1 design support use in modular drive assemblies with compatible control sections.

For continuous operation at a 4 kHz switching frequency, the drive can supply 141 A. Under the same carrier frequency, it delivers about 55 kW of mechanical shaft power, which fits medium-sized spindle duties in metalworking and similar industrial processes. Short transients are covered by a peak capability of 212 A, which supports added acceleration torque during demanding motion changes. The internal power electronics dissipate 1800 W as heat, so the enclosure must provide adequate airflow. Mains input is rated for 400–480 V AC on a three-phase supply with a ±10% tolerance, while the control section uses a separate AC 230 V source. This split supply arrangement helps keep the control circuit stable if the power input varies.

Heat removal is handled by a built-in air blower, so cabinet airflow must remain unobstructed during operation. Because the design omits a brake chopper and uses a rigid DC bus, regenerated energy must be managed externally. Closed-loop control is supported through digital servo and resolver feedback, allowing the drive to work with motor systems that use either feedback method. The drive has a mass of 104 kg, so the mounting structure must support a heavy cabinet component and allow enough clearance for handling and ventilation.