RD51.1-5B-003-L-NN-FW Bosch Rexroth Indramat
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MPN: R911200302
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The Bosch Rexroth Indramat RD51.1-5B-003-L-NN-FW is a drive controller from the RD 500 Drive Controllers series with a rated power of 3.0 kW. It features U/f curve control, a built-in brake chopper, and forced air cooling. This unit operates as a converter with a voltage range of 500 V.
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Product Description:
The RD51.1-5B-003-L-NN-FW is a drive controller produced by Bosch Rexroth Indramat for the RD 500 Drive Controllers series. It is used in industrial automation to regulate three-phase induction motors, providing speed adjustment and start-stop sequencing for conveyor lines, mixers, and similar equipment. By modulating stator frequency and voltage, the unit keeps mechanical motion aligned with commands from a PLC and supports stable process control. This operating method also allows the motor to accelerate and decelerate in a controlled way when load conditions change during normal machine operation.
The controller uses U/f curve control, so the output voltage rises in proportion to frequency and maintains the magnetic flux of standard asynchronous motors without field-oriented feedback. Its continuous shaft output is rated at 3.0 kW, indicating the maximum mechanical power the connected motor can deliver under nominal conditions. The converter is designed for 500 V power systems and uses a three-phase AC converter input, which suits common industrial power distribution. Internal temperature is managed by forced-air cooling, with fans moving air across the heat sinks during steady or cyclic loading. This cooling method helps keep the power semiconductors within their intended operating range during repeated starts, speed changes, and continuous running.
A built-in brake chopper dissipates regenerated energy during rapid deceleration and helps prevent DC-bus overvoltage without an external braking module. The controller is part of Design Generation 1 within the RD 500 platform. Application-specific functions are added through separately ordered operating software, allowing the control features to match the intended motor application. The controller has no auxiliary drive functions, so only the required options need to be added for the installation. This layout keeps the base unit focused on core motor control while leaving optional features to be selected separately.
Frequently Asked Questions about RD51.1-5B-003-L-NN-FW:
Q: Does the RD51.1-5B-003-L-NN-FW drive controller include a brake chopper?
A: The RD51.1-5B-003-L-NN-FW has a built-in brake chopper for handling dynamic braking requirements.
Q: What is the rated power of the RD51.1-5B-003-L-NN-FW drive controller?
A: This model operates with a rated power output of 3.0 kW for its applications.
Q: What type of cooling is used in the RD51.1-5B-003-L-NN-FW drive controller?
A: Cooling for this unit is provided by forced air, ensuring operation within specified temperature ranges.
Q: What is the input supply voltage for the RD51.1-5B-003-L-NN-FW drive controller?
A: The RD51.1-5B-003-L-NN-FW supports a supply voltage of 500 V coming from a three-phase AC converter.
Q: What control method is implemented in the RD51.1-5B-003-L-NN-FW drive controller?
A: This drive controller uses U/f curve control for managing motor speeds and operation.
