RD52.1-4B-037-L-NN-FW Bosch Rexroth Indramat
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MPN: R911200057
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The Bosch Rexroth Indramat RD52.1-4B-037-L-NN-FW is a drive controller from the RD 500 Drive Controllers series. It features field oriented vector control, a built-in brake chopper, and supports a rated power of 37 kW on a 380 to 480 V three-phase AC supply. The unit uses forced air cooling and has an integrated mains filter.
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Product Description:
The RD52.1-4B-037-L-NN-FW is a three-phase drive controller produced by Bosch Rexroth Indramat within the RD 500 Drive Controllers series. It serves as the power interface between plant mains and an AC motor, converting fixed-frequency input into a variable output that enables precise speed and torque regulation. By applying vector-based current modulation, the device fits applications such as pumps, fans, and conveyors where coordinated acceleration profiles and feedback-aligned torque control are required.
Rated for a continuous output of 37 kW, the controller connects to a three-phase AC converter supply. It accepts line voltages from 380 to 480 V and maintains performance across a mains fluctuation window of ±10 %. Internal signal processing executes field oriented vector control, allowing independent adjustment of magnetizing and torque-producing currents so that motor flux remains optimized during dynamic load changes. These electrical limits set the maximum output capability and the permissible installation range for protective equipment such as circuit breakers and contactors, while the vector algorithm supports high torque at low speed for starting heavy inertial loads.
Burst energy generated during deceleration is dissipated by a built-in brake chopper, eliminating the need for an external resistor switch. Thermal management relies on forced air cooling; fans draw cabinet air across heat sinks to keep semiconductor temperatures within safe operating limits. Input harmonics are reduced by an integrated mains filter, which helps support plant EMC limits. This unit is classified as design generation 1. It is supplied without additional application functions or preinstalled option boards, allowing I/O or communication features to be selected for the target machine architecture.
Frequently Asked Questions about RD52.1-4B-037-L-NN-FW:
Q: What is the rated power output of the RD52.1-4B-037-L-NN-FW drive controller?
A: The RD52.1-4B-037-L-NN-FW drive controller provides a rated power output of 37 kW for industrial applications.
Q: What voltage range is supported by the RD52.1-4B-037-L-NN-FW?
A: This model operates within a voltage range of 380 to 480 V, accommodating common industrial power systems.
Q: Does the RD52.1-4B-037-L-NN-FW include an integrated brake chopper?
A: A built-in brake chopper is included on this drive controller, allowing for efficient absorption of regenerative energy.
Q: Which cooling method is used for the RD52.1-4B-037-L-NN-FW?
A: The RD52.1-4B-037-L-NN-FW features forced air cooling to maintain optimal operating temperatures during use.
Q: Is a mains filter included with the RD52.1-4B-037-L-NN-FW drive controller?
A: An integrated mains filter is present in this drive controller to help reduce electrical noise from the power supply.
