R911294973 (DKR02.1-W300N-BE74-02-FW)

Name: R911294973 (DKR02.1-W300N-BE74-02-FW)
Brand: Indramat Drives
SKU: DKR02.1-W300N-BE74-02-FW
Price: 307.00 USD
Availability: InStock

DKR Drive Controllers

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The R911294973 (DKR02.1-W300N-BE74-02-FW) is a Rexroth digital drive controller engineered for direct connection to a three-phase mains supply with an input voltage range of 400–480 VAC and a maximum output current of 300 A. It integrates a SERCOS command communication interface and accommodates both digital servo and resolver feedback for motor control. The drive’s firmware and parameter configuration reside on an external software module that is transferable between units. Continuous output current is specified as 110 A at 8 kHz or 141 A at 4 kHz. The controller measures approximately 104 kg in mass, features internal air cooling via a dedicated blower, and maintains optimal operation from 5°C to 45°C. The unit does not include a bleeder or brake chopper and is configured with a rigid DC bus.

Technical Specifications

Input Rating
400 to 480 Volts AC

Output Current Rating
300 Amps

Line
2

Design
1

Function Numeric Code
74

Version Function Numeric Code
02

Communication Module
SERCOS

Feedback Options
Digital Servo and Resolver

Firmware Storage
Software Module in U1 Slot

Continuous Output Current (4kHz)
141 Amps

Continuous Output Current (8kHz)
110 Amps

Power Dissipation at Continuous Output
1800 Watts

Weight
104 Kilograms

Accessories Kit Weight
1.7 Kilograms

Operating Temperature
5 to 45 degrees Celsius

Derating Temperature
55 degrees Celsius

Accessories Kit Catalog Number
M1-RAC 3

Cooling System
Built-in Blower

IP Rating
20

Global Shipping
Available

Frequently Asked Questions

How does the SERCOS interface improve synchronization in the DKR02.1-W300N-BE74-02-FW?

It enables real-time digital communication between drives and controllers. This ensures precise synchronization of motion across multiple axes.

Why is digital servo and resolver feedback important in the DKR02.1-W300N-BE74-02-FW?

These feedback systems enhance accuracy in motor positioning. They also provide reliable data for closed-loop control during demanding operations.

Does the built-in blower cooling of the DKR02.1-W300N-BE74-02-FW require external air supply?

No, the blower system is self-contained within the unit. It maintains airflow internally, reducing the need for additional cooling infrastructure.

What role does the 300A nominal current play in the DKR02.1-W300N-BE74-02-FW?

It allows the drive to handle motors with high current demand. This supports heavy-duty motion applications without compromising performance stability.

Do the design version and line series in the DKR02.1-W300N-BE74-02-FW affect backward compatibility?

Yes, the version “1” and line series “02” ensure consistent system interfacing. They allow integration with both newer and legacy Bosch Rexroth Indramat systems.

Common Misspellings

DKR021W300NBE7402FW

DKR02 1 W300N BE74 02 FW

dkr02.1-w300n-be74-02-fw

DKR2.1-W300N-BE74-02-FW

Internal Product Review

The DKR02.1-W300N-BE74-02-FW servo drive has a SERCOS command interface, onboard air cooling with blower, and digital servo and resolver feedback support. It is manufactured by Bosch Rexroth Indramat and provides a nominal current of about 300A. This model is commonly used in CNC machining, robotics, and high-level conveyor automation.