R911294961 (DKR04.1-W400N-BE08-01-FW)

DKR Drive Controllers

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The R911294961 (DKR04.1-W400N-BE08-01-FW) is a digital drive controller engineered for precise speed and position control of compatible motor types, including LAF, 2AD, LSF, and 1MB frameless motors. It operates within a frequency range of 50 Hz to 60 Hz and utilizes digital servo and resolver feedback. The unit incorporates a SERCOS command interface for communication and is designed with a built-in fan for air cooling, ensuring a heat dissipation capacity of 2.5 kW. The controller features a rigid DC bus configuration without an internal bleeder and supports external brake resistors to manage regenerative energy. It operates with a control voltage around 300 V, accommodates firmware installation via integrated slots, and has a rated current of 400 A.

Technical Specifications

Operating Frequency
50 Hz...60 Hz

Firmware
ESM02.3

Heat Dissipation System
Inbuilt blower fan

Control Voltage
300 Volts

Heat Dissipation
2.5 kW

Additional Features
External brake resistor

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Global

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Internal Product Review

The Bosch Rexroth Indramat DKR series part DKR04.1-W400N-BE08-01-FW is an efficient drive unit built for reliable motor control applications. It works with 50–60 Hz operating frequency, 2.5 kW heat dissipation and 300V control voltage. It finds usage in aircraft machinery systems and demanding servo applications.