DKR02.1-W300B-BE84-01-FW Bosch Rexroth Indramat
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MPN: R911279600
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The Bosch Rexroth Indramat DKR02.1-W300B-BE84-01-FW is a digital intelligent AC drive controller from the DKR Drive Controllers series. It features a SERCOS command interface, supports digital servo and resolver feedback, and has a peak drive current of 212 amps with a continuous drive power of approximately 55 kW at 4 kHz. The controller has an internal bleeder, weighs about 104 kg, and is cooled by a built-in blower.
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Product Description:
The DKR02.1-W300B-BE84-01-FW is a digital intelligent AC drive controller from Bosch Rexroth Indramat, assigned to the DKR Drive Controllers series. It serves as the power and regulation stage between a 400–480 V supply and synchronous servo axes, converting control commands into precisely modulated motor current for coordinated motion in industrial automation cells and machining centers. The unit is intended for closed-loop servo applications that require stable torque response, accurate speed control, and repeatable positioning. Its digital control architecture helps the drive respond quickly to changing load conditions during acceleration, deceleration, and contouring moves.
Rated power is drawn from a 400–480 V ±10 % three-phase supply, while the control electronics operate on a separate AC 230 V ±10 % feed that keeps logic power separate from the main power section inside the cabinet. With 4 kHz pulse-width modulation, the amplifier can sustain 141 A continuously and reach a transient ceiling of 212 A for heavy acceleration or peak process demands. At that switching frequency, the inverter provides about 55 kW of continuous drive power, matching the controller’s current rating 300 code. Cooling is handled by a built-in blower, which supports heat removal from the power semiconductors, and an internal bleeder diverts regenerated energy to a 1.5 kW resistor during braking. Communication with the CNC or PLC uses the SERCOS interface, while dual-channel digital servo or resolver feedback closes the control loop and supports precise axis regulation.
The brake resistor can absorb up to 240 kWs before its thermal limit is reached, which helps the controller manage frequent deceleration cycles on high-inertia axes. During sustained operation, the electronics and power stage dissipate about 1800 W, so cabinet ventilation must remove a substantial amount of heat from the enclosure. The housing weighs roughly 104 kg, which is an important factor for mounting and handling. The unit is design version 1, line series 02, and function module version 01, identifying this configuration within the product line.
Frequently Asked Questions about DKR02.1-W300B-BE84-01-FW:
Q: What command interface does the DKR02.1-W300B-BE84-01-FW use?
A: The DKR02.1-W300B-BE84-01-FW drive controller uses a SERCOS interface for command communication.
Q: What is the continuous current rating for the DKR02.1-W300B-BE84-01-FW drive controller?
A: The drive provides a continuous current of 141 A at 4 kHz.
Q: Does the DKR02.1-W300B-BE84-01-FW include an internal bleeder?
A: This model features an internal bleeder for managing excess energy during braking.
Q: What cooling method is used in the DKR02.1-W300B-BE84-01-FW?
A: The DKR02.1-W300B-BE84-01-FW operates with a built-in blower for air cooling.
Q: What type of motor feedback does the DKR02.1-W300B-BE84-01-FW support?
A: Digital servo and resolver feedback are supported for motor position and speed monitoring.
