R911288901 (DKR04.1-W400N-BT26-01-FW)

Name: R911288901 (DKR04.1-W400N-BT26-01-FW)
Brand: Indramat Drives
SKU: DKR04.1-W400N-BT26-01-FW
Price: 588.00 USD
Availability: InStock

DKR Drive Controllers

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The R911288901 (DKR04.1-W400N-BT26-01-FW) is a Bosch Rexroth DKR series drive controller engineered for operation within ambient temperatures of 5°C to 45°C. It operates with a rated current of 400A and supports motor cables up to 75 meters in length. The unit features a function numeric code of 26 and requires a 3 x NH80gl type F1 mains fuse, with a minimum lead cross-section of 25 mm². It incorporates a built-in blower for air cooling and utilizes a phase-controlled thyristor bridge compatible with mains voltages exceeding 400V. The device operates with a rigid DC bus, without a bleeder or brake chopper, and employs a SERCOS command interface. It accepts both digital servo and resolver feedback and is specified for operation with an isolating transformer of at least 100 kVA on an undergrounded three-phase system. At installation, signal/control cables should be separated from power cables by at least 100 mm. Storage should be in a dry, shock-free environment.

Technical Specifications

Ambient Temperature Range
5°C and 45°C

Function Numeric Code
26

Rated Current
400A

Maximum Cable Length for Motor Connection
75m

Fuse Type
3 x NH80gl type F1

Fuse Lead Cross-Section
minimum 25mm2

Mains Voltage Rating
more than 400V

Isolating Transformer Minimum Power
100kVA

Operation System
undergrounded three-phase systems

Inclusion of Bleeder
No

Recommended Storage
Dry place free from shock and dust

Number of Rating Plates
2

Power Connector
Supports connection of double cables

Shipping Agents
FedEx

Frequently Asked Questions

What is the motor frequency tracking method used in Bosch Rexroth Indramat DKR04.1-W400N-BT26-01-FW?

Frequency tracking relies on phase-locked loop circuits, aligning control voltage frequency to reference inputs, ensuring motor stability under ±2 Hz variations.

How does the motor feedback system of DKR04.1-W400N-BT26-01-FW prevent positional lag?

The system continuously corrects deviations through digital servo updates, using resolver encoding to recalibrate shaft position with high resolution cycles.

Where does the motor control voltage of Bosch Rexroth Indramat DKR04.1-W400N-BT26-01-FW apply during startup?

The control voltage initializes logic circuits and servo communication channels, establishing readiness prior to main power circuit activation and motor excitation.

Does the motor in DKR04.1-W400N-BT26-01-FW accept parallel resolver input channels?

Yes, redundant resolver channels can be configured, enabling dual-path feedback redundancy and fault tolerance for precision motion control.

What is the motor cooling algorithm of Bosch Rexroth Indramat DKR04.1-W400N-BT26-01-FW?

The built-in blower follows thermal mapping, adjusting airflow proportional to duty cycle, maintaining optimal winding temperature balance during overload cycles.

Common Misspellings

DKR041W400NBT2601FW

DKR04 1 W400N BT26 01 FW

dkr04.1-w400n-bt26-01-fw

DKR4.1-W400N-BT26-01-FW

Internal Product Review

The Bosch Rexroth Indramat DKR04.1-W400N-BT26-01-FW belongs to the DKR series. It features 3-phase 400–480 V power range, SERCOS command interface and built-in air cooling with digital servo resolver feedback. This drive is used in industrial servo control requiring precision and in voltage handling applications.