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R911295806 (DKR04.1-W300E-BA03-01-FW)

DKR Drive Controllers

  In-Stock, Ships 3-5 Days
Expedited Lead Times on Select Parts
1 Year Warranty Included
Free Ground Shipping
Expedited Lead Times on Select Parts
1 Year Warranty Included
Free Ground Shipping
The Bosch Rexroth R911295806 (DKR04.1-W300E-BA03-01-FW) drive controller is designed for the regulation of 2AD or ADF AC main spindle motors, 1MB frameless spindle motors, and linear motors. It supports digital precision control and maintains a wide speed range at constant power. The unit operates directly from a 3-phase AC supply at 50–60 Hz, with a nominal current rating of approximately 300A. Core components include a basic unit, firmware module, command interface cards, and auxiliary plug-in modules. It features external bleeder configuration with a brake chopper and rigid DC bus, an analog interface for command input, digital servo and resolver feedback for motor feedback, and employs an internal blower for air cooling.

Technical Specifications

Supplier
Bosch Rexroth

Operating Frequency
50 to 60 Hz

Tolerance
±10%

Control Voltage
AC 230V

Control Voltage Frequency
50 to 60 Hz

Control Voltage Tolerance
±2%

Continuous Power 4kHz Drive
93 kW

Continuous Current 4kHz Drive
210 A

Continuous Power 8kHz Drive
66 kW

Continuous Current 8kHz Drive
150 A

Continuous Regenerated Power
66 kW

Peak Regenerated Power
120 kW (max 10 seconds)

Cooling Method
Built-in blower, ambient air

Total Heat Dissipation
2500 W

Heat Dissipation in Air-Channel
1800 W

Braking Energy
Maximum 720 kWs

Ideal Ambient Temperature
+5 to +45 degree Celsius

Motor Feedback
Digital servo and resolver

Interface
Analog

Function Numeric Code
03

Function Numeric Code Version
01

How does the DKR04.1-W300E-BA03-01-FW handle regenerative energy during braking?

It uses an external bleeder and brake chopper system to safely dissipate excess energy. This prevents DC bus overvoltage and ensures stable braking in high-duty cycles.

Can this drive controller integrate with existing mid-power machine setups?

Yes, its analog command interface and digital feedback support allow quick retrofit into existing frameworks. This reduces rewiring complexity and shortens commissioning time.

How does resolver feedback improve precision in industrial motion control?

Resolvers provide continuous position data even under harsh conditions. This ensures precise velocity and torque regulation for CNC and packaging applications.

What advantage does a 300 A continuous current rating provide in real use?

It allows the controller to manage high-demand loads without derating. This makes it suitable for machinery with sustained heavy torque requirements.

Why is the DKR04.1-W300E-BA03-01-FW suited for CNC environments?

Its fast response to analog velocity and torque loops supports smooth spindle control. This enhances machining accuracy and repeatability across varying material loads.

DKR041W300EBA0301FW

DKR04 1 W300E BA03 01 FW

dkr04.1-w300e-ba03-01-fw

DKR4.1-W300E-BA03-01-FW

Internal Product Review

The Bosch Rexroth Indramat DKR04.1-W300E-BA03-01-FW drive controller integrates an external bleeder/brake chopper and rigid DC bus bleeder. It accepts digital servo and resolver feedback and delivers 300 A nominal current. Its compact design with built-in blower simplifies installation across CNC platforms, packaging machines, and material handling systems.

Warranty

1-year-warranty
Indramat USA 1 Year Warranty

Repair

product repair We offer a repair service for the DKR04.1-W300E-BA03-01-FW.
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