RD52.1-4B-030-L-NN-FW Bosch Rexroth Indramat
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MPN: R911200056
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The Bosch Rexroth Indramat RD52.1-4B-030-L-NN-FW drive controller is part of the RD 500 Drive Controllers series. It features a rated power of 30 kW, operates with a voltage range of 380 to 480 V, and supports converter 3 x AC supply. The unit includes a built-in brake chopper, integrated mains filter, and uses forced air cooling with field oriented vector control.
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Product Description:
The RD52.1-4B-030-L-NN-FW is a three-phase AC converter module produced by Bosch Rexroth Indramat within the RD 500 Drive Controllers series. It regulates induction or synchronous motors in automated plant sections where accurate speed and torque control are required. The unit uses closed-loop current and flux control so that machinery can follow demanding motion profiles while maintaining stable process quality. Because the control loop responds quickly to load variation, it can support equipment that must hold consistent operating behavior during acceleration, deceleration, and continuous running.
Its nominal output is 30 kW, which supports medium-sized pumps, extruders, or conveyor drives from the same cabinet. The converter accepts supply lines in the range of 380 to 480 V AC and tolerates line fluctuations of ±10% without derating, which helps it operate on industrial power systems with varying line conditions. Motor regulation is performed with field-oriented vector control, which separates torque-producing and magnetizing currents for responsive speed control. Incoming power passes through a Converter 3 x AC front end, and regenerative peaks are handled by the built-in brake chopper, which diverts surplus DC bus energy to an external resistor. This arrangement helps the drive maintain controlled operation when the connected motor is slowing down or when the load is returning energy to the converter.
Thermal management relies on forced air cooling; fans move cabinet air across heat sinks so continuous output can be delivered without external chillers. Line-borne interference is suppressed by an integrated mains filter, which reduces the need for additional EMC hardware and helps limit conducted emissions on the supply connection. This model belongs to design generation 1. The controller is shipped without additional application-specific functions, leaving parameter slots available for machine-specific setup. This keeps the base configuration open for adaptation to the connected process rather than assigning fixed optional functions in advance.
Frequently Asked Questions about RD52.1-4B-030-L-NN-FW:
Q: Does the RD52.1-4B-030-L-NN-FW drive controller include a brake chopper?
A: The RD52.1-4B-030-L-NN-FW features a built-in brake chopper for managing braking energy.
Q: What control type is used in the RD52.1-4B-030-L-NN-FW?
A: This drive controller uses field oriented vector control as its control method.
Q: How is the RD52.1-4B-030-L-NN-FW cooled?
A: Forced air cooling is used to maintain the operating temperature of this drive controller.
Q: What is the rated power of the RD52.1-4B-030-L-NN-FW?
A: The RD52.1-4B-030-L-NN-FW offers a rated power output of 30 kW.
Q: What supply type and voltage range does the RD52.1-4B-030-L-NN-FW support?
A: This unit is compatible with 3-phase AC converters and operates in a voltage range of 380 to 480 V.
