R911278728 (DKR04.1-W300N-BE23-01-FW)

Name: R911278728 (DKR04.1-W300N-BE23-01-FW)
Brand: Indramat Drives
SKU: DKR04.1-W300N-BE23-01-FW
Price: 858.00 USD
Availability: InStock

DKR Drive Controllers

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The R911278728 (DKR04.1-W300N-BE23-01-FW) is a Rexroth Indramat DKR 04 series drive controller engineered for operation with LSF and LAF linear and spindle motors. It is rated for a nominal current of approximately 300 A and requires a three-phase AC input voltage of 400–480 V at 50–60 Hz. The device utilizes a SERCOS command interface and supports digital servo and resolver feedback. Cooling is achieved via an integrated air blower. The unit does not include a bleeder (brake chopper) and possesses a rigid DC bus configuration. It weighs roughly 150 kg and has a control circuit consumption of 300 VA. Firmware is not included and must be ordered separately. Parameterization is necessary during commissioning, and installation should be performed by qualified personnel due to high voltage and current levels.

Technical Specifications

Rated Current
300 Amps

Function Numeric Code
23

Version Function Numeric Code
01

Cooling Method
Air, Integrated blower

Bleeder
Not included

Communication Interface
SERCOS

Feedback
Digital Servo, Resolver

Weight
150 kilograms

Accessories Kit Weight
1.7 kilograms

Input Voltage Requirements
400 to 480 Volts AC

Phase Input Support
Three-phase

Frequencies
50 to 60 Hertz

Control Circuit Voltage
230 Volts AC

Control Circuit Frequencies
50 to 60 Hertz

Power Consumption
300 VA

Applications
Industrial, NC Machine Tools, Printing Machines

Parameterization
Required at startup

Installation
To be handled by experienced personnel.

Frequently Asked Questions

How does the SERCOS interface in the DKR04.1-W300N-BE23-01-FW affect system integration?

It enables deterministic, high-speed communication with CNC and automation systems. This ensures precise synchronization of multiple drive axes.

How does air cooling influence the controller’s placement?

Air cooling requires unobstructed airflow and spacing around the unit. Enclosures must allow proper ventilation to prevent thermal shutdown.

Can the rigid DC bus design of the DKR04.1-W300N-BE23-01-FW impact system flexibility?

Yes, it limits the ability to share energy between drives. This can increase the need for external energy handling components.

What installation considerations arise from the unit’s IP20 housing?

It provides minimal protection, so the controller must be mounted in a protected cabinet. Dust, moisture, and accidental contact must be avoided.

How does version 1 of the controller differ in practical deployment?

Version 1 excludes integrated energy dissipation features, requiring external components for braking energy. This affects both cabinet design and wiring complexity.

Common Misspellings

DKR041W300NBE2301FW

DKR04 1 W300N BE23 01 FW

dkr04.1-w300n-be23-01-fw

DKR4.1-W300N-BE23-01-FW

Internal Product Review

The DKR04.1-W300N-BE23-01-FW is a drive controller from Bosch Rexroth Indramat. It features a SERCOS command interface, air cooling via a built-in blower, ~300 A nominal current handling, and digital servo/resolver feedback. Its housing is specified to IP20 protection (open style use) as typical for the DKR series.