RD52.1-4B-004-P-NN-FW Bosch Rexroth Indramat
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MPN: R911200283
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The Bosch Rexroth Indramat RD52.1-4B-004-P-NN-FW is a drive controller from the RD 500 Drive Controllers series. This unit features a built-in brake chopper and an integrated mains filter, and uses field oriented vector control. It operates as a converter with a supply voltage range of 380 to 480 V and supports a heat dissipation panel for cooling up to 18.5 kW.
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Product Description:
The RD52.1-4B-004-P-NN-FW drive controller is built by Bosch Rexroth Indramat as part of the RD 500 Drive Controllers series. It acts as the regulated power interface between the plant-level control network and a three-phase motor, processing reference values from the PLC and generating variable-frequency output that matches load demands. By converting incoming mains energy and supervising current, voltage, and torque, the unit supports coordinated motion sequences in packaging, conveying, and forming equipment.
Its motor regulation algorithm is based on field-oriented vector control, which calculates stator flux in real time so dynamic torque tracking is maintained even at low speed. During fast deceleration, the built-in brake chopper routes regenerative energy to an external resistor and helps prevent DC-bus overvoltage. Input power conditioning is handled by an integrated mains filter that reduces conducted electromagnetic interference before it reaches the supply. The power stage is a three-phase AC converter, meaning the rectifier and inverter are supplied from a three-phase line. Thermal energy from ratings up to 18.5 kW is transferred to a heat dissipation panel, allowing panel-mount installation without forced ventilation.
The electrical interface accepts voltages from 380 to 480 V, giving flexibility when the plant distributes either 400 V or 460 V utility feeds. Allowed fluctuations are limited to ±10 %, so voltage swings outside this band trigger protective shutdown. The product is built as design generation 1, which keeps it aligned with components from the same release cycle. Functional expansion slots are not equipped, so the enclosure does not include option modules. Application software is ordered separately, which allows the controller to be matched to the required operating functions.
Frequently Asked Questions about RD52.1-4B-004-P-NN-FW:
Q: Does the RD52.1-4B-004-P-NN-FW include a brake chopper?
A: The RD52.1-4B-004-P-NN-FW drive controller features a built-in brake chopper for dynamic braking support.
Q: What control method does the RD52.1-4B-004-P-NN-FW use?
A: This drive controller utilizes field oriented vector control to regulate motor performance.
Q: How is the RD52.1-4B-004-P-NN-FW drive controller cooled?
A: Cooling is managed with a heat dissipation panel for units up to and including 18.5 kW.
Q: What is the allowable input voltage range for the RD52.1-4B-004-P-NN-FW?
A: The RD52.1-4B-004-P-NN-FW accepts 3-phase AC input with a voltage range of 380 to 480 V.
Q: Is a mains filter included in the RD52.1-4B-004-P-NN-FW drive controller?
A: This model comes with an integrated mains filter as standard.
