RD51.1-4B-037-L-FV-FW Bosch Rexroth Indramat
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MPN: R911200883
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The RD51.1-4B-037-L-FV-FW is a drive controller from Bosch Rexroth Indramat and is part of the RD 500 Drive Controllers series. This unit features a rated power of 37 kW and supports a voltage range of 380 to 480 V with a ±10% tolerance. It comes with a built-in brake chopper, integrated mains filter, and uses forced air cooling.
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Product Description:
The RD51.1-4B-037-L-FV-FW belongs to the RD 500 Drive Controllers series from Bosch Rexroth Indramat. Designed for cabinet-mounted inverter systems, it converts three-phase mains power into a variable output that matches the torque and speed demands of asynchronous motors in automated lines and conveyor modules. By adjusting voltage and frequency together, the drive supports controlled motor operation across changing load conditions and helps maintain stable performance in industrial motion applications.
The unit accepts mains input from 380 to 480 V, and the internal logic tolerates supply fluctuations of ±10 %, allowing stable operation on lightly regulated industrial power systems. Its continuous output is rated at 37 kW, which suits mid-range pump, extruder, and fan duties. Speed regulation uses U/f curve control, so output voltage is reduced in proportion to frequency in order to keep motor magnetization consistent at lower speeds. Heat from the power electronics is removed by forced air cooling, which supports reliable thermal management inside the cabinet.
The input stage uses a converter 3 × AC supply arrangement, so the controller can be connected to a standard three-phase feeder with protective earth. During rapid deceleration, a built-in brake chopper directs excess DC-bus energy to external resistors to keep link voltage within an acceptable range. A 24 V stand-by power input allows the control electronics to remain active when the main supply is switched off. Line-side interference is reduced by the integrated mains filter, which helps limit conducted emissions to nearby automation equipment. This combination of power conversion, braking support, standby control power, and input filtering makes the drive suitable for variable-speed industrial motor systems that need steady operation and straightforward cabinet integration.
Frequently Asked Questions about RD51.1-4B-037-L-FV-FW:
Q: What braking feature is integrated into the RD51.1-4B-037-L-FV-FW drive controller?
A: The RD51.1-4B-037-L-FV-FW drive controller features a built-in brake chopper for convenient integration with braking resistors.
Q: What is the rated power output of the RD51.1-4B-037-L-FV-FW drive controller?
A: This model has a rated power output of 37 kW, supporting high-demand industrial motors.
Q: What supply voltage range does the RD51.1-4B-037-L-FV-FW support?
A: The RD51.1-4B-037-L-FV-FW accepts a three-phase AC input with a voltage range of 380 to 480 V and a tolerance of ±10%.
Q: Is a mains filter included with the RD51.1-4B-037-L-FV-FW drive controller?
A: This drive controller includes integrated mains filtering, providing built-in protection against mains disturbances.
Q: What cooling method is employed by the RD51.1-4B-037-L-FV-FW drive controller?
A: Forced air cooling is used in this model, enabling effective thermal management during continuous use.
