DKR02.1-W300B-B Bosch Rexroth Indramat
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MPN: R911287698
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The Bosch Rexroth Indramat DKR02.1-W300B-B is part of the DKR Drive Controllers series and serves as a digital intelligent AC drive controller. It offers a continuous current of 141 A at 4 kHz and a peak current of 212 A, with a rated power voltage of 3-phase AC 400 to 480 V. The drive features air cooling with a built-in blower, an internal bleeder, and supports digital servo and resolver feedback.
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Product Description:
The DKR02.1-W300B-B drive controller is manufactured by Bosch Rexroth Indramat and belongs to the DKR Drive Controllers series. As a digital intelligent AC drive controller, it regulates high-power servo axes in machining centers and automated assembly lines by converting three-phase supply energy into controlled motor currents and channeling regenerative energy into its brake circuitry. Its closed-loop operation helps the machine maintain stable speed and position during frequent load changes, which is important on heavy-duty axes that start, stop, and reverse repeatedly during production.
This controller is supplied with an internal bleeder, so excess kinetic energy is converted to heat inside the cabinet-mounted brake resistor. At 4 kHz PWM, it delivers a continuous drive current of 141 A, producing about 55 kW of shaft power, while the brake resistor can dissipate 1.5 kW and absorb 240 kWs per braking cycle. The electronics are fed by a control supply of 230 V AC ±10%, and the power stage accepts three-phase 400–480 V mains. A built-in blower forces cooling air across the heat sink, maintaining total heat dissipation at 1800 W. Digital servo and resolver feedback are processed simultaneously, which allows the controller to work with different motor feedback systems. The unit is design version 1 in line series 02.
When connected to a mains window of 400–480 V AC, the unit can supply a peak current of 212 A for rapid acceleration or positioning demands before returning to its continuous operating range. The blower expels the generated heat, and total losses do not exceed 1800 W, a figure used when sizing cabinet ventilation. Despite its high rating, the assembly weighs only 104 kg, which keeps transport and placement manageable for a drive in this power class. The combination of strong braking capacity, dual-channel feedback support, and high peak current makes the controller suitable for gantry axes and spindle drives that alternate quickly between motoring and regeneration during extended production runs.
Frequently Asked Questions about DKR02.1-W300B-B:
Q: What cooling method is used on the DKR02.1-W300B-B drive controller?
A: The DKR02.1-W300B-B uses a built-in blower for air cooling to maintain optimal temperatures.
Q: What types of motor feedback does the DKR02.1-W300B-B controller support?
A: This drive controller supports both digital servo and resolver motor feedback.
Q: What is the continuous power output of the DKR02.1-W300B-B at 4 kHz?
A: The continuous power output of the drive at 4 kHz is approximately 55 kW.
Q: What is the peak current capability of the DKR02.1-W300B-B?
A: The maximum peak current deliverable by this drive is 212 A.
Q: What is the required control voltage for the DKR02.1-W300B-B drive controller?
A: The control voltage required for this controller is AC 230 V with a tolerance of ±10%.
