RD51.1-4B-030-L-F1-FW Bosch Rexroth Indramat
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MPN: R911200623
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The Bosch Rexroth Indramat RD51.1-4B-030-L-F1-FW is a drive controller from the RD 500 Drive Controllers series with a rated power of 30 kW and voltage range of 380 to 480 V. It features a built-in brake chopper, integrated mains filter, and uses U/f curve control. The unit is cooled by forced air and is designed for converter 3 x AC supply.
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Product Description:
The RD51.1-4B-030-L-F1-FW is a drive controller produced by Bosch Rexroth Indramat and supplied within the RD 500 Drive Controllers series. Designed for cabinet installation, this controller interfaces between a three-phase mains circuit and an induction motor to regulate speed and torque in automated machinery. By modulating output frequency and voltage, it supports conveyor lines, pumps, and process equipment that require variable-speed operation without mechanical gear changes.
It incorporates a built-in brake chopper, so surplus regenerative energy is dissipated internally rather than returned to the DC link or mains during deceleration. The motor flux is managed with U/f curve control, which is a scalar method suited to standard induction motors where closed-loop vector feedback is not required. Thermal management relies on forced air cooling, and an integrated fan moves air across the heat sinks to keep semiconductor temperatures within a safe operating range. The unit is part of design generation 1, placing it in the first RD51 platform release. At the output, the inverter can deliver up to 30 kW of mechanical power to the connected motor, and it uses a 3 × AC converter input that matches common industrial supply networks.
The mains side already includes an integrated mains filter, so additional external EMC components are not typically required for conducted emission control. Line input can vary from 380 to 480 V, allowing the controller to operate on common 50 Hz or 60 Hz supply systems without tap adjustments. It also tolerates voltage fluctuations of ±10 %, which helps the drive remain in operation during short sags or rises. Current feedback from the U6, V6, and W6 phases is routed to the control board, allowing fault detection and drive diagnostics while maintaining open-loop scalar regulation.
Frequently Asked Questions about RD51.1-4B-030-L-F1-FW:
Q: What braking feature is included on the RD51.1-4B-030-L-F1-FW drive controller?
A: The RD51.1-4B-030-L-F1-FW drive controller features a built-in brake chopper for energy dissipation during braking cycles.
Q: What type of control method does the RD51.1-4B-030-L-F1-FW implement?
A: This model uses U/f curve control, which regulates output frequency and voltage based on a predefined curve.
Q: What cooling method is used in the RD51.1-4B-030-L-F1-FW drive controller?
A: The RD51.1-4B-030-L-F1-FW is cooled using forced air cooling for efficient heat management.
Q: Does the RD51.1-4B-030-L-F1-FW include a mains filter?
A: An integrated mains filter is present in this drive controller to reduce line-side electrical disturbances.
Q: What is the rated power output of the RD51.1-4B-030-L-F1-FW?
A: This drive controller is rated for a power output of 30 kW, suitable for moderate to high demand applications.
