RD52.1-4B-018-L-NN-NN-NN-FW Bosch Rexroth Indramat
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MPN: R911289497
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The Bosch Rexroth Indramat RD52.1-4B-018-L-NN-NN-NN-FW is a drive controller from the RD 500 Drive Controllers series. It features an integrated mains filter and a built-in brake chopper, and supports a voltage range of 380 to 480 V with ±10% tolerance. The unit uses forced air cooling and field oriented vector control, with a rated power of 18.5 kW.
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Product Description:
The RD52.1-4B-018-L-NN-NN-NN-FW is a drive controller manufactured by Bosch Rexroth Indramat and assigned to the RD 500 Drive Controllers series. It governs AC motors within automated machinery, translating higher-level process commands into precise current and voltage patterns that maintain motor speed, regulate torque, and synchronize motion sequences across production cells. By integrating into cabinet-mounted control racks, the device forms the interface between plant PLCs and power electronics, making it a central component of industrial automation.
Its power section is rated for a continuous output of 18.5 kW, supplied from a three-phase mains input that can vary between 380 to 480 V. The input uses a 3 x AC converter arrangement, so the unit rectifies and inverts each phase to form a controllable AC output. Voltage fluctuations of up to ±10 % are tolerated without derating, which supports operation in facilities with unstable grids. Closed-loop regulation is achieved through field-oriented vector control, and this algorithm computes instantaneous flux and torque components to keep the motor’s electromagnetic state aligned with command references. No optional application functions are installed, so the controller can be configured by external software for task-specific parameter sets.
Thermal and dynamic energy management is handled by the built-in brake chopper, which routes regenerated power to an external resistor during rapid deceleration. A stream of cooling air passes through heat-sink channels because the unit relies on forced air cooling. Input harmonics are reduced by an integrated mains filter, which helps the upstream supply remain within tolerance. The hardware layout follows design generation 1, so mechanical dimensions, connector positions, and software tools match other first-generation members of the series.
Frequently Asked Questions about RD52.1-4B-018-L-NN-NN-NN-FW:
Q: Does the RD52.1-4B-018-L-NN-NN-NN-FW drive controller include a brake chopper?
A: The RD52.1-4B-018-L-NN-NN-NN-FW is equipped with a built-in brake chopper, allowing efficient braking in your application.
Q: What is the rated power output of the RD52.1-4B-018-L-NN-NN-NN-FW?
A: This drive controller is rated for 18.5 kW of power, supporting demanding industrial applications.
Q: What input voltage range can the RD52.1-4B-018-L-NN-NN-NN-FW accept?
A: It operates with a supply voltage range from 380 to 480 V AC, making it suitable for standard three-phase industrial power supplies.
Q: How is the RD52.1-4B-018-L-NN-NN-NN-FW drive controller cooled?
A: This model utilizes forced air cooling to manage heat during operation.
Q: Does the RD52.1-4B-018-L-NN-NN-NN-FW have a mains filter included?
A: The RD52.1-4B-018-L-NN-NN-NN-FW features an integrated mains filter, helping to reduce electrical noise.
