R911278601 (DKR04.1-W300E-BE23-01-FW)

Name: R911278601 (DKR04.1-W300E-BE23-01-FW)
Brand: Indramat Drives
SKU: DKR04.1-W300E-BE23-01-FW
Price: 256.00 USD
Availability: InStock

DKR Drive Controllers

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The Bosch Rexroth MPN R911278601 (DKR04.1-W300E-BE23-01-FW) is a digital intelligent drive controller designed for applications such as numerically controlled machine tools and printing equipment. This unit features a robust control system supporting a wide speed range and constant power output, with air cooling managed by a built-in blower that uses internal or external cabinet air. The drive operates at a rated power voltage of AC 3x400–480V (±10%) and a control voltage of AC 230V, with a power density of 300 VA. It supports an operating frequency up to 1600 Hz, dissipates 2500W heat, and provides continuous power up to 93 kW. Classified as IP20, the device offers protection against solid particles, includes five slots for plug-in modules, SERCOS interface, digital servo and resolver feedback, and accommodates an external bleeder with brake chopper and rigid DC bus. The firmware module ESM02.3 is required and ordered separately.

Technical Specifications

Control Voltage
AC 230V with 300 VA

Driving Power Voltage
0 – 380V

Frequency
800 Hz/1600 Hz for a 4 kHz/8 kHz drive

Heat Dissipation
2500W at 4 kHz/9 kHz

Continuous Current
210 A/150 A

Continuous Power
93 kW/66 kW at the driven motor shaft

Weight
150 kg

Accessories Weight
1.7 kg

External Brake Resistor Weight
15.3 kg

Protection Category
IP20

Operating Temperature
+5 to +45 degree Celsius

Slots
U1 to U5 for installing different plug-in modules

Interface
SERCOS interface for effective communication

Feedback Mechanism
Digital servo and resolver feedback

Firmware Module
ESM02.3 (operating software)

Frequently Asked Questions

How does the DKR04.1-W300E-BE23-01-FW manage braking energy during high-load deceleration?

It uses an external bleeder with a brake chopper to safely dissipate excess energy. This prevents DC-link overvoltage and ensures stable drive performance under rapid load changes.

What advantage does the integrated blower cooling provide in continuous operation?

The forced-air cooling maintains consistent thermal conditions without requiring liquid circuits. This reduces maintenance needs and supports stable output at high current ratings.

Can the DKR04.1-W300E-BE23-01-FW be installed in multi-axis systems with limited cabinet space?

Yes, its compact enclosure allows close mounting with other modules. Proper airflow clearance must still be maintained to prevent localized overheating.

Why is SERCOS communication relevant for this controller?

SERCOS ensures deterministic cycle times for synchronized motion across multiple axes. This makes it suitable for complex automation lines where timing precision is critical.

What precautions should be taken when wiring the rigid DC bus?

Shielded and correctly sized cabling is required to handle the nominal 300 A current. Proper grounding reduces EMI and improves system reliability.

Common Misspellings

DKR041W300EBE2301FW

DKR04 1 W300E BE23 01 FW

dkr04.1-w300e-be23-01-fw

DKR4.1-W300E-BE23-01-FW

Internal Product Review

The DKR04.1-W300E-BE23-01-FW is a drive controller by Bosch Rexroth Indramat for industrial motion systems. It features external bleeder with brake chopper, supports SERCOS command interface, and handles digital servo or resolver feedback at 300 A rated current with blower-based air cooling. Its enclosure conforms to IP20 for cabinet installation.