DKR03.1-W100B-BE09-01-FW Bosch Rexroth Indramat
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MPN: R911282381
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The Bosch Rexroth Indramat DKR03.1-W100B-BE09-01-FW is part of the DKR Drive Controllers series and weighs approximately 49 kilograms. It features digital servo and resolver feedback, a peak current of 71 Amps, and supports a rated power voltage of 3xAC 400 to 480 Volts. The controller uses air cooling with a built-in blower and includes an internal bleeder with a brake resistor power of 1 kW.
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Product Description:
The DKR03.1-W100B-BE09-01-FW is a digital intelligent AC drive controller manufactured by Bosch Rexroth Indramat for the DKR Drive Controllers series. It supplies regulated three-phase power to large synchronous or induction servo axes used in machine tools, presses, and handling equipment. A built-in blower expels conversion losses from the housing, enabling compact installation without external cooling assemblies. This arrangement supports precise speed and torque control in heavy-duty motion applications where stable electrical output is important during changing load conditions.
The controller accepts a mains input of 400–480 V AC, allowing direct connection to common factory supplies. A separate logic feed of 230 V AC keeps the control circuitry active for diagnostics and fieldbus communication even when the power section is disabled. At a 4 kHz switching frequency, the inverter delivers 71 A continuous current, which corresponds to 26 kW continuous output at rated voltage. Motion commands, parameter sets, and status words are exchanged through the SERCOS interface, enabling synchronized multi-axis operation. The drive also processes digital servo feedback and resolver signals, so it can work with different motor feedback systems used on industrial axes. Its current rating 100, line series 03, design version 1, and function module version 01 identify its exact configuration.
During rapid deceleration, the integrated brake resistor handles 1 kW brake dissipation on a continuous basis and can absorb up to 150 kWs braking energy from the DC bus. Internal losses produce a 900 W heat load, so the enclosure ventilation system must remove this heat to protect the power semiconductors. The output stage can also support brief overload demands during changing load conditions, even though continuous operation is limited by thermal constraints. Mechanical installation is influenced by the unit’s 49 kg weight, which reflects the size of its power section and integrated braking hardware. Adequate mounting support and unobstructed airflow help the drive operate reliably in densely packed cabinets.
Frequently Asked Questions about DKR03.1-W100B-BE09-01-FW:
Q: What kind of bleeder configuration does the DKR03.1-W100B-BE09-01-FW have?
A: The DKR03.1-W100B-BE09-01-FW drive controller features an internal bleeder for energy dissipation during braking cycles.
Q: What type of command interface is supported by the DKR03.1-W100B-BE09-01-FW?
A: This model supports a SERCOS interface, allowing high-speed digital communication with compatible control systems.
Q: What kinds of motor feedback does the DKR03.1-W100B-BE09-01-FW accept?
A: The DKR03.1-W100B-BE09-01-FW provides resolver and digital servo feedback options for motor position and speed monitoring.
Q: How is the DKR03.1-W100B-BE09-01-FW drive controller cooled?
A: A built-in blower provides air cooling for the DKR03.1-W100B-BE09-01-FW, ensuring thermal management during operation.
Q: What is the continuous power capability of the DKR03.1-W100B-BE09-01-FW at 4 kHz?
A: The continuous power output at 4 kHz for this drive controller is approximately 26 kW.
