R911279185 (DKR04.1-W300E-BE12-01-FW)

Name: R911279185 (DKR04.1-W300E-BE12-01-FW)
Brand: Indramat Drives
SKU: DKR04.1-W300E-BE12-01-FW
Price: 295.00 USD
Availability: InStock

DKR Drive Controllers

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The Bosch Rexroth drive controller MPN R911279185 (DKR04.1-W300E-BE12-01-FW) is engineered for direct mains connection in industrial automation, supporting applications such as printing machines and NC machine tools. It operates with a grounded AC 3 × 400–480 V power supply at 50 to 60 Hz. The unit provides a continuous output power of 66 kW and can achieve peak output of 125 kW at 282 A. It is compatible with a 1.8 Ohm external brake resistor for continuous dissipation of 3 kW and uses integrated forced-air cooling. The controller features five plug-in module slots, supports digital servo and resolver feedback, and includes a SERCOS command interface. Physical specifications include an IP20 protection rating, operation up to 1000 meters altitude, and an approximate weight of 150 kg.

Technical Specifications

Main Power Supply
AC 3 x 400 - 480V

Frequency
50 - 60 Hz

Continuous Regenerated Power
66 kW

Resistor
1.8 Ohm

Continuous Power of Resistor
3 kW

Drive
4 kHz/8 kHz

Continuous Power of Drive
93 kW/66 kW

Continuous Current of Drive
210 A/150 A

Peak Power of Drive
125 kW

Peak Current of Drive
282 A

Built-In Blower
Yes

Number of Slots for Plug-In Cards
5

Model Weight
150 kg

Heat Dissipation
1800 W

Protection Class
IP20

Maximum Installation Altitude
1000 meters

Firmware Module
Order Separately

Global Shipping
Yes.

Frequently Asked Questions

Why does the DKR04.1-W300E-BE12-01-FW require an external bleeder with brake chopper?

The external bleeder dissipates regenerated energy during braking, preventing DC bus overvoltage. This ensures safe deceleration in applications with frequent stops or reversals.

How does resolver feedback differ from digital servo feedback in this controller?

Resolver feedback provides robust position sensing in harsh conditions, while digital servo feedback enables higher precision. The combination supports a wide range of motors and accuracy requirements.

What installation considerations are necessary for handling approx. 300A nominal current?

Cabling, connectors, and protective devices must be sized to handle high current safely. Proper busbar design and grounding are also essential to prevent overheating and electrical noise.

How does the rigid DC bus design affect overall system stability?

A rigid DC bus improves voltage stability under dynamic loads. It reduces the risk of fluctuations that can impact motion accuracy or cause system faults.

Can the DKR04.1-W300E-BE12-01-FW be used in CNC machining systems?

Yes, it is suitable due to its fast command processing and feedback handling. This allows precise motor control for cutting, milling, and multi-axis positioning.

Common Misspellings

DKR041W300EBE1201FW

DKR04 1 W300E BE12 01 FW

dkr04.1-w300e-be12-01-fw

DKR4.1-W300E-BE12-01-FW

Internal Product Review

The DKR04.1‐W300E-BE12-01-FW is a drive controller from Bosch Rexroth Indramat. It offers a SERCOS interface with external bleeder, built-in blower for air cooling, a nominal current of ~300 A and support for digital servo/resolver feedback. It suits automation lines, CNC machining, and precision printing systems.