RD51.1-5N-022-L-C1-FW Bosch Rexroth Indramat
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MPN: R911200833
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The Bosch Rexroth Indramat RD51.1-5N-022-L-C1-FW is a drive controller in the RD 500 Drive Controllers series with a rated power of 22 kW and a voltage range of 500 V. It operates using U/f curve control and features forced air cooling without a built-in brake chopper. This drive controller supplies power with a converter using 3-phase AC and supports 24 V stand-by power externally for applications up to 110 kW.
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Product Description:
Bosch Rexroth Indramat manufactures the RD51.1-5N-022-L-C1-FW as part of the RD 500 Drive Controllers series. This unit is an AC drive controller intended for cabinet installation where it converts three-phase mains power into a regulated output for asynchronous motors used in conveyors, pumps, and general material-handling stations. By modulating output frequency, it enables speed regulation and better energy matching between the motor shaft and process demand.
The controller is rated for 22 kW of mechanical output, so the linked motor can draw continuous power up to that limit without derating. A mains supply of 500 V three-phase is accepted at the line terminals, and the internal rectifier and IGBT bridge are configured as a 3 x AC converter that supplies a synthesized AC waveform to the motor. Speed reference is produced through U/f curve control, which maintains a fixed ratio between voltage and frequency to support standard squirrel-cage machines without encoder feedback. Thermal management relies on forced-air cooling; airflow moves from the cabinet front through dedicated channels to keep semiconductor junction temperatures within limits. Dynamic braking energy cannot be absorbed internally because the unit is supplied without a built-in brake chopper, so an external resistor module is required when rapid stops are needed.
The control electronics can remain active on 24 V standby power, letting fieldbus communication and parameter access stay available even when mains power is isolated. Hardware is classified as Design Generation 1, which matches the original RD 500 option cards and mounting kits. The drive uses the same footprint and fieldbus options found across the range, which helps it fit existing cabinet layouts.
Frequently Asked Questions about RD51.1-5N-022-L-C1-FW:
Q: Does the RD51.1-5N-022-L-C1-FW come with a built-in brake chopper?
A: The RD51.1-5N-022-L-C1-FW drive controller does not include a built-in brake chopper.
Q: What type of control method does the RD51.1-5N-022-L-C1-FW use?
A: This drive controller utilizes U/f curve control for regulating motor speed.
Q: How is the RD51.1-5N-022-L-C1-FW cooled?
A: Forced air cooling is used to maintain the operating temperature of this drive controller.
Q: What is the rated power of the RD51.1-5N-022-L-C1-FW drive controller?
A: The RD51.1-5N-022-L-C1-FW has a rated power output of 22 kW.
Q: What is the voltage supply requirement for the RD51.1-5N-022-L-C1-FW?
A: This model operates within a voltage range of 500 V and requires a 3-phase AC converter supply.
