RD52.1-4B-055-D-V1-FW Bosch Rexroth Indramat
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MPN: R911201297
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The Bosch Rexroth Indramat RD52.1-4B-055-D-V1-FW is a drive controller in the RD 500 Drive Controllers series. It has a rated power of 55 kW and operates in a voltage range of 380 to 480 volts with a ±10% tolerance. The unit features built-in brake chopper functionality and uses a plug-through cooler for cooling.
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Product Description:
The RD52.1-4B-055-D-V1-FW is a drive controller produced by Bosch Rexroth Indramat for the RD 500 Drive Controllers series. Within an automation cell, it modulates three-phase induction or synchronous motor torque and speed so that conveying, pumping, or machining tasks stay within programmed limits. By housing the power stage, control logic, and protective circuitry in one unit, the product simplifies cabinet layouts and combines power conversion, motor feedback, and dynamic braking in a single package.
The controller regulates motor current with field-oriented vector control, a method that decouples flux and torque to improve response during load transients. It is dimensioned for a continuous mechanical output of 55 kW, which suits medium-power production machinery. Mains terminals accept line voltages from 380 to 480 V, and operation remains stable within a tolerance band of ±10%, allowing installation on grids that experience moderate fluctuation. A built-in brake chopper routes regenerated energy to an external resistor so deceleration of high-inertia drives does not oversaturate the DC bus. The controller is in design generation 1.
Thermal management is handled by a plug-through cooler for up to 110 kW, so heat sink losses are discharged to the surrounding air instead of remaining inside the control enclosure. Line-side interference is reduced by an integrated mains filter, which can reduce the need for additional external filtering components. The power stage is supplied as a 3 × AC converter unit, meaning it rectifies incoming three-phase AC and reconstructs a variable-frequency output for the motor. Support electronics can remain active during plant shutdowns through the controller’s 24 V standby power input, which is wired to an external supply for parameter retention and fieldbus communication when the main circuit is isolated.
Frequently Asked Questions about RD52.1-4B-055-D-V1-FW:
Q: Does the RD52.1-4B-055-D-V1-FW drive controller feature a brake chopper?
A: The RD52.1-4B-055-D-V1-FW includes a built-in brake chopper for dynamic braking applications.
Q: What type of control method does the RD52.1-4B-055-D-V1-FW use?
A: This drive controller utilizes field oriented vector control for precise motor operation.
Q: What is the rated power output of the RD52.1-4B-055-D-V1-FW drive controller?
A: It is rated for a power output of 55 kW, suitable for demanding drive tasks.
Q: Does this model include an integrated mains filter?
A: The RD52.1-4B-055-D-V1-FW integrates a mains filter to reduce electrical disturbances.
Q: What supply voltage range does the RD52.1-4B-055-D-V1-FW support?
A: This unit operates on a three-phase AC supply with a voltage range between 380 and 480 V.
