R911278864 (DKR02.1-W300B-BE43-02-FW)

Name: R911278864 (DKR02.1-W300B-BE43-02-FW)
Brand: Indramat Drives
SKU: DKR02.1-W300B-BE43-02-FW
Price: 375.00 USD
Availability: InStock

DKR Drive Controllers

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The Bosch Rexroth drive controller R911278864 (DKR02.1-W300B-BE43-02-FW) is engineered for use in digital intelligent drive systems (DIAX 04). It features an integrated auxiliary bleeder resistor for energy dissipation during deceleration, with a braking energy capacity of 240 kWs and continuous regenerated power of 43 kW. The device operates on a three-phase AC voltage of 400–480 V at 50/60 Hz, with a nominal current rating of approximately 300 A and peak output of 93 kW at 212 A. Control voltage is applied via the X10 port at AC 230 V, requiring 200 VA. Air cooling is provided by an internal blower. Command inputs are handled through the SERCOS interface, and feedback is managed with digital servo and resolver systems. Internal diagnostics are indicated through the H1 display.

Technical Specifications

Product Type
Drive Controller

Peak Power
93 kW

Peak Current
212 A

Maximum Braking Energy
240 kWs

Rated Power
300 A

AC Input
3 x 400 - 480 V, 50/60 Hz

Control Voltage Connection
AC 230V

Power Requirement for Control Voltage
200 VA

Auxiliary Bleeder
Yes

Position Control
Yes via digital servo and resolver feedback

Speed Control
Yes via digital servo and resolver feedback

Status Display
H1 Error Diagnosis

Protection Category
IP 20

Operating Temp Range
+5 to +45 degree Celsius

Shipping
Global

Configuration Slots
U1 - U5 in basic unit

Cooling Unit
Blower with external ai

Frequently Asked Questions

How does the DKR02.1-W300B-BE43-02-FW ensure safe energy dissipation?

It integrates a bleeder circuit that discharges DC-link voltage after shutdown. This prevents stored energy from causing hazards during maintenance or downtime.

What is the role of the SERCOS interface in this drive controller?

It provides real-time communication with precise synchronization across automation networks. This reduces latency and ensures coordinated motion in multi-axis systems.

How does dual motor feedback improve motion precision?

The combination of digital servo feedback and resolver feedback enhances redundancy and accuracy. It ensures reliable position and velocity data even in noisy environments.

Why does the DKR02.1-W300B-BE43-02-FW include a numeric function code?

The function code helps users identify specific firmware and configuration sets. This ensures compatibility and simplifies replacement or service planning.

How does continuous duty operation impact maintenance cycles?

The controller is designed for industrial duty cycles with minimal interruptions. This reduces unplanned downtime and lowers long-term service demands.

Common Misspellings

DKR021W300BBE4302FW

DKR02 1 W300B BE43 02 FW

dkr02.1-w300b-be43-02-fw

DKR2.1-W300B-BE43-02-FW

Internal Product Review

The Bosch Rexroth Indramat DKR02.1-W300B-BE43-02-FW from the DKR family leverages a 300 A nominal current and built-in bleeder for DC-link discharge. It includes SERCOS interface and dual-mode servo/resolver feedback. Its air-blower cooling and modular design ease integration in automated systems like robotics, CNC machining or material handling.