DKR02.1-W300N-BA37-01-FW

DKR02.1-W300N-BA37-01-FW is a Bosch Rexroth Indramat unit in the DKR Drive Controllers series. It is a digital intelligent AC drive controller for controlling compatible AC motors. The controller belongs to line series 02 and design version 1. Its current-rating designation is 300, indicating its current-capacity class.

The analog command interface accepts analog control signals from an external controller. Digital servo and resolver feedback provide motor position and speed information for closed-loop control. At a 4 kHz switching frequency, the drive supplies a continuous current of 141 A and approximately 55 kW of continuous power. Its peak current is 212 A for short-duration load demands.

The rated power input is three-phase AC at 400–480 V with a tolerance of ±10%. A separate AC 230 V control supply with a tolerance of ±10% powers the control circuitry. The unit has no bleeder or brake chopper and uses a rigid DC bus, so it does not dissipate regenerative energy through an internal braking resistor circuit.

Cooling is provided by air from a built-in blower, which removes the unit’s 1,800 W of total heat dissipation. The controller weighs approximately 104 kg.