RD52.1-4B-001-L-NN-FW Bosch Rexroth Indramat
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MPN: R911200043
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The Bosch Rexroth Indramat RD52.1-4B-001-L-NN-FW is a drive controller from the RD 500 Drive Controllers series. It provides field oriented vector control and features an integrated mains filter. The unit uses forced air cooling and supports a voltage range of 380 to 480 V with a built-in brake chopper.
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Product Description:
The RD52.1-4B-001-L-NN-FW is a three-phase converter drive controller produced by Bosch Rexroth Indramat within the RD 500 Drive Controllers series. Designed for cabinet-mounted automation duty, the unit converts fixed line power into a controlled output for induction and synchronous motors in material handling, packaging, and process machinery. By combining power electronics with vector-based regulation, it acts as the central actuator interface between PLC motion commands and the motor shaft. Its modular construction allows parameter matching to machine requirements while maintaining consistent communication formats across the series. This makes it suitable for applications that need regulated speed, stable torque response, and repeatable motor behavior under changing load.
For incoming power, the controller is built as a Converter 3 x AC module and accepts line supplies from 380 to 480 V. Acceptable voltage deviation is held within ±10% tolerance, allowing the device to ride through moderate supply swings without triggering protective shutdowns. An integrated mains filter attenuates conducted interference, so additional cabinet filtering is not normally required. Thermal management is handled by forced-air cooling, meaning the internal heat sink is crossed by a dedicated fan that expels heat directly from the enclosure. That arrangement supports stable operation in industrial power systems where minor line variation is common.
Motion response is calculated by the field-oriented vector control core, which manipulates stator currents to produce real-time torque even at low speed. This control method improves low-speed performance and supports smooth response during acceleration and load changes. During deceleration, a built-in brake chopper diverts regenerated energy to external resistors to prevent DC-bus overvoltage. The unit is in design generation 1, so its dimensions and terminal layout match the earliest RD 52 mechanical frame. The functions menu is not equipped, leaving space for optional communication or I/O boards when required.
Frequently Asked Questions about RD52.1-4B-001-L-NN-FW:
Q: Does the RD52.1-4B-001-L-NN-FW drive controller include a brake chopper?
A: The RD52.1-4B-001-L-NN-FW is equipped with a built-in brake chopper for dynamic braking needs.
Q: What type of control method is employed by the RD52.1-4B-001-L-NN-FW?
A: This model uses field oriented vector control, allowing precise control of motor torque and speed.
Q: How is the RD52.1-4B-001-L-NN-FW drive controller cooled?
A: The RD52.1-4B-001-L-NN-FW features forced air cooling for heat dissipation.
Q: Is there a mains filter included in the RD52.1-4B-001-L-NN-FW?
A: This drive controller has an integrated mains filter, reducing line interference.
Q: What voltage range does the RD52.1-4B-001-L-NN-FW support?
A: The voltage input range for this controller is 380 to 480 V with a ±10% tolerance.
