RD51.1-4N-015-L-C1-FW Bosch Rexroth Indramat
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MPN: R911200553
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The Bosch Rexroth Indramat RD51.1-4N-015-L-C1-FW is a drive controller from the RD 500 Drive Controllers series, offering a rated power of 15.0 kW. It features U/f curve control, an integrated mains filter, and uses forced air cooling. The controller has a voltage range of 380 to 480 V with a ±10% tolerance, and operates on a 3-phase AC supply.
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Product Description:
Bosch Rexroth Indramat manufactured the RD51.1-4N-015-L-C1-FW drive controller for the RD 500 Drive Controllers series. As a variable-frequency converter, it processes three-phase line power, produces a controlled output waveform, and lets induction motors accelerate, decelerate, or hold a constant speed in response to PLC references. The unit fits decentralized panels on material-handling lines, process pumps, and general factory automation where precise speed regulation is required. This type of drive is commonly used where motor speed must be adjusted smoothly without the tighter axis control associated with servo systems. The enclosure shares mounting points with earlier RD51 modules.
The controller accepts line voltages from 380 to 480 V, allowing installation on standard industrial distribution networks. Its rated output is 15 kW for continuous motor operation. The power section uses a 3-phase AC converter topology, so rectification and DC-link regulation are internal. Motor flux is regulated by U/f curve control, which keeps the ratio between stator voltage and frequency constant across the speed range. That control method suits fans, pumps, and conveyor duties where stable speed behavior is more important than high-dynamic positioning. For electromagnetic compatibility, an integrated mains filter reduces conducted noise returning to the supply.
Thermal management relies on forced-air cooling, so airflow through the heat sink must remain unobstructed. Dynamic braking hardware is external because the drive includes no brake chopper, and dissipative resistors are connected only when an add-on module is installed. Because braking energy is not handled internally, decelerating loads may require a matching external braking arrangement for shorter stop times. Control electronics can remain energized during mains loss by wiring a 24 V stand-by input, which preserves parameter memory and fieldbus communication. The drive allows ±10 % tolerance for supply voltage and frequency deviations, helping it ride through moderate grid fluctuations without tripping. The unit is part of generation 1.
Frequently Asked Questions about RD51.1-4N-015-L-C1-FW:
Q: What is the rated power capacity of the RD51.1-4N-015-L-C1-FW drive controller?
A: The RD51.1-4N-015-L-C1-FW supports a rated power output of 15.0 kW, making it suitable for mid-range industrial requirements.
Q: Does the RD51.1-4N-015-L-C1-FW include a built-in brake chopper?
A: This model is manufactured without a built-in brake chopper, so an external solution would be required if braking is needed.
Q: What type of control does the RD51.1-4N-015-L-C1-FW use?
A: The RD51.1-4N-015-L-C1-FW implements U/f curve control for variable frequency drive applications.
Q: Is a mains filter included in the RD51.1-4N-015-L-C1-FW?
A: The integrated mains filter is included in this unit to minimize electrical interference from the supply line.
Q: What type of power supply and voltage range does the RD51.1-4N-015-L-C1-FW require?
A: This drive controller operates with a three-phase AC converter and supports a voltage range of 380 to 480 V with a ±10% tolerance.
