RD52.1-4N-004-L-NN-NN-NN-FW Bosch Rexroth Indramat
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MPN: R911289831
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The Bosch Rexroth Indramat RD52.1-4N-004-L-NN-NN-NN-FW is a drive controller from the RD 500 Drive Controllers series. It features field oriented vector control and operates within a voltage range of 380 to 480 V with a ±10 percent tolerance. This first generation unit supports forced air cooling and has an integrated mains filter.
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Product Description:
The RD52.1-4N-004-L-NN-NN-NN-FW is a drive controller produced by Bosch Rexroth Indramat for the RD 500 Drive Controllers series. It is installed between the power supply and an industrial motor to modulate frequency and voltage so that motion axes follow precise speed and torque commands. Within distributed control cabinets, it acts as the power stage for PLC-directed processes, converting reference values into regulated three-phase output currents for conveyors, pumps, or material-handling equipment. This operating role suits variable-speed applications that require controlled acceleration and steady response as load conditions change.
This unit is designed for a supply window of 380 – 480 V and remains stable within a permissible fluctuation of ±10 %. It receives energy through a three-phase AC input, rectifies it, and recreates variable-frequency output under field-oriented vector control. That control method continuously calculates magnetic flux and torque so the motor can respond smoothly across a wide speed range without abrupt changes in output. An integrated mains filter reduces conducted emissions and helps the installation meet electromagnetic compatibility limits without requiring an external line reactor.
Thermal management relies on forced air cooling, moving cabinet air across the heat sink to keep semiconductor junctions below their rated limits during continuous cyclic loads. The power section is supplied without a built-in brake chopper, so regenerative braking energy must be routed to an external resistor or returned to the grid. In applications with frequent deceleration, that arrangement requires the rest of the drive system to absorb excess energy before DC-bus voltage rises too far. This version includes no optional I/O cards or application-specific software, reflecting a standard hardware build. The controller is identified as design generation 1, indicating that its mechanical dimensions and control platform match the first release of the RD 500 product line.
Frequently Asked Questions about RD52.1-4N-004-L-NN-NN-NN-FW:
Q: What input voltage range does the RD52.1-4N-004-L-NN-NN-NN-FW drive controller support?
A: This unit operates with a voltage range of 380 to 480 V.
Q: How is the RD52.1-4N-004-L-NN-NN-NN-FW drive controller cooled?
A: The RD52.1-4N-004-L-NN-NN-NN-FW uses forced air cooling to manage its operating temperature.
Q: What type of control method is implemented in the RD52.1-4N-004-L-NN-NN-NN-FW?
A: This drive controller uses field oriented vector control for its control type.
Q: Does the RD52.1-4N-004-L-NN-NN-NN-FW feature an integrated mains filter?
A: An integrated mains filter is included with this model.
Q: Is a brake chopper included with the RD52.1-4N-004-L-NN-NN-NN-FW drive controller?
A: This unit does not have a built-in brake chopper.
