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R911283444 (DKR04.1-W300N-BA01-01-FW)

DKR Drive Controllers

Rated 4.6 stars (14 total reviews)
  In-Stock, Ships 3-5 Days
Expedited Lead Times on Select Parts
1 Year Warranty Included
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Expedited Lead Times on Select Parts
1 Year Warranty Included
Free Ground Shipping
The Bosch Rexroth drive controller R911283444 (DKR04.1-W300N-BA01-01-FW) is designed for use with select Rexroth motors in power classes between 10 and 93 kW. It features an analog command interface, supports digital servo and resolver feedback, and allows various module insertions. The unit provides a nominal current rating of approximately 300A and operates with air cooling from a built-in blower. Its maximum operating temperature is 55°C, where nominal performance is maintained at 80%. The controller has shock resistance up to 8.4g and weighs approximately 150 kg. Installation requires adherence to EMC guidelines and use of a 10 mm² copper protective conductor. It must be mounted in a closed cabinet per DIN VDE 0160.

Technical Specifications

Line Code
4

Version Code
1

Additional Purchase
Firmware Bought Separately

Control Voltage Rating
230VAC +/-10%

Installation Requirement
EMC Requirements

Ground Wire Connection
Required Before Startup

Built-in Monitor
Yes

Product Weight
150kg

Interface Type
Analog

Continuous Power Range
10 - 93kW

Compatibility
Selected Frameless and AC Main Spindle Motors

Controller Insertion Slots
Yes

Firmware Installation
Plug-in Module, DSM Software Module or EPROMs

Load Capacity Requirement
Sufficient

Shock Resistance
8.4g for 5ms

Maximum Ambient Temperature
55°C

Nominal Data Derated to
80%

What are the practical effects of the "no bleeder" configuration in the DKR04.1-W300N-BA01-01-FW?

Without a bleeder, excess regenerative energy cannot be dissipated internally, so external handling or energy recovery must be considered. This is critical when frequent deceleration cycles are expected.

How does an analog command interface affect integration with automation systems?

Analog inputs allow compatibility with legacy controllers but require careful noise shielding and calibration. They also limit some precision compared to fully digital control buses.

Why is air cooling with a built-in blower advantageous in factory environments?

It simplifies installation by avoiding external cooling infrastructure but demands good airflow management. Dust filtration or enclosure pressurization may be necessary in harsh environments.

What maintenance implications arise from using air cooling instead of liquid cooling?

Air-cooled systems generally require periodic cleaning of filters and fans rather than coolant circulation checks. This reduces fluid maintenance but increases sensitivity to ambient air quality.

How does digital servo and resolver feedback improve motion accuracy?

Resolvers provide robust position sensing in noisy environments, while digital servo feedback enables fine velocity control. Combined, they ensure stable, precise motor performance under variable loads.

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Internal Product Review

The DKR04.1-W300N-BA01-01-FW drive controller by Bosch Rexroth offers a nominal current of approximately 300A and uses air cooling with a built-in blower. It supports analog command interface and digital servo or resolver feedback. This unit is widely used in CNC machining, robotics, and automated manufacturing systems.

Warranty

1-year-warranty
Indramat USA 1 Year Warranty

Repair

product repair We offer a repair service for the DKR04.1-W300N-BA01-01-FW.
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