Product Description:

Bosch Rexroth Indramat manufactures the DKR02.1-W300N-BE12-01-FW drive controller in the DKR Drive Controllers series. This unit links the incoming AC supply to an Indramat servo motor and modulates DC energy so that speed, torque, and position commands from a higher-level PLC are carried out accurately. It regulates motor current in real time, which helps coordinated axes follow commanded motion profiles during acceleration, steady running, and deceleration. In automation cells, the controller supports multi-axis gantries, presses, and machine tools by delivering high current while monitoring motor feedback to protect the load and the drive system.

Electrical connection to the motion network uses the SERCOS interface, which provides fiber-optic, noise-immune exchange of setpoints and status data. Fiber-optic communication also helps reduce sensitivity to electrical noise in cabinets that contain high-power switching devices. The controller delivers 300 A of continuous output current, a level suited to motors that require high armature current during dynamic duty cycles. Heat is removed by a built-in air blower, so enclosure temperature can remain within limits without external ducting. For position and velocity control, the unit accepts digital servo and resolver feedback, allowing use with compatible high-resolution encoders or resolvers. Because the DC bus does not include a bleeder or brake chopper, regenerative energy must be absorbed by the load or by an external resistor.

The type code includes several variant identifiers used for this controller. The housing belongs to Line 02, and the unit is marked Version 1, which indicates the hardware revision used for this model. It also carries Function Numeric Version 01 as part of the coded identification. The power stage uses a rigid DC bus layout without an internal brake chopper, so returned braking energy must be handled outside the controller when the application feeds power back during deceleration. This arrangement suits systems that use external energy dissipation or rely on the connected load to absorb regenerative energy.