R911287253 (DKR04.1-W400E-BA01-01-FW)

DKR Drive Controllers

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The Bosch Rexroth drive controller R911287253 (DKR04.1-W400E-BA01-01-FW) is designed for integration with 2AD, ADF, LSF, LAF, and frameless spindle motors, supporting power outputs from 10 kW to 93 kW and a rated current of 400 A. It connects to three-phase mains of 400–480 V at 50–60 Hz, with a control voltage requirement of 300 VA. The unit is equipped with an integrated mains contactor, emergency shutdown feature, and is cooled by a built-in blower. It accommodates external brake resistors and provides an analog interface for command input, digital I/O, and supports motor feedback via digital servo and resolver. The system includes modular support for a software module, multiturn absolute encoders with SSI output, and CLC link interface options.

Technical Specifications

Purpose
Drive Controller

Motor Power Output Range
10 kW to 93 kW

Connection to Mains
Three-phase, 400 V to 480 V

Built-In Features
Mains contactor, Emergency shutdown device

Frequency Operation
50…60 Hz

Control Voltage Power
300 VA

Cooling System
Built-in blowe

Frequently Asked Questions

What control strategies are supported when the motor feedback is resolver-based in Bosch Rexroth Indramat DKR04.1-W400E-BA01-01-FW motor system?

The drive accommodates resolver-based motor feedback by aligning rotor position precisely, ensuring synchronous torque generation while maintaining continuous speed regulation under variable operational load.

How does the rigid DC bus arrangement in Bosch Rexroth Indramat DKR04.1-W400E-BA01-01-FW drive module affect transient voltage absorption?

The rigid DC bus enables direct transient energy management, routing excess voltages toward bleeder and brake chopper, reducing stress on motor insulation during sharp operational cycles.

Does Bosch Rexroth Indramat DKR04.1-W400E-BA01-01-FW drive drive support analog command interface under fluctuating reference signals?

Yes, the analog interface permits proportional command mapping, maintaining linear current modulation to the motor even when the input reference signal experiences rapid analog fluctuations.

Where does the external bleeder configuration in Bosch Rexroth Indramat DKR04.1-W400E-BA01-01-FW drive application dissipate regenerated energy?

The external bleeder transforms surplus regenerated electrical energy into heat across dedicated resistors, preventing overshoot and protecting motor drive circuitry during deceleration phases.

What diagnostic behavior occurs in Bosch Rexroth Indramat DKR04.1-W400E-BA01-01-FW drive system when digital servo feedback is impaired?

The system registers fault states, halts current supply, and triggers protective shutdown, ensuring the motor shaft cannot operate uncontrolled without precise feedback alignment.

Common Misspellings

Internal Product Review

The DKR04.1-W400E-BA01-01-FW from Bosch Rexroth Indramat belongs to the DKR series known for its high servo drive applications in demanding automation environments. It features a rigid DC bus with external bleeder and brake chopper, air cooling via built-in blower, and digital resolver feedback. It is suitable for machine tools, robotics, and high-precision automation lines for controlling interfaces.