RD51.1-4N-007-L-NN-FW/S111 Bosch Rexroth Indramat
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MPN: R911201125
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The Bosch Rexroth Indramat RD51.1-4N-007-L-NN-FW/S111 drive controller is part of the RD 500 Drive Controllers series. It features a rated power of 7.5 kW and operates on a voltage range of 380 to 480 V with a ±10% tolerance. The unit supports U/f curve control, uses forced air cooling, and includes an integrated mains filter.
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Product Description:
The RD51.1-4N-007-L-NN-FW/S111 is a drive controller produced by Bosch Rexroth Indramat for variable-speed operation of industrial motors. Installed between a plant power source and an induction motor, it converts fixed-frequency input power into an adjustable output so conveyors, pumps, and other general-purpose machines can run at the commanded speed. The unit comes without a built-in brake chopper, so applications with regenerative or overhauling loads require separate braking hardware instead of relying on internal energy dissipation.
The controller is rated at 7.5 kW, which indicates the continuous motor power it can support under nominal operating conditions. It accepts line voltages from 380 to 480 V, allowing one unit to cover several common industrial supply levels. Regulation is based on U/f curve control, which keeps voltage and frequency in step so the motor can maintain stable magnetic flux across the operating range. Internal heat is removed by forced air cooling, using fan-driven airflow across the heat sink to keep semiconductor temperatures within an acceptable range during sustained operation. An integrated mains filter helps reduce conducted electrical noise, which can simplify cabinet layout by reducing the need for separate external filtering components.
The power section is designed for a 3-phase AC supply and remains operational with line deviations of up to ±10 % from nominal, helping the drive tolerate normal utility variation without unnecessary trips. Because braking energy cannot be dissipated inside the unit, external chopper equipment or a line regeneration module is needed when the connected machine can drive the motor faster than the commanded speed. The drive uses Generation 1 hardware, indicating the first hardware generation for this model. This arrangement makes the unit suitable for standard motor-control duties where adjustable speed, simple flux control, and stable operation over common industrial voltage ranges are required.
Frequently Asked Questions about RD51.1-4N-007-L-NN-FW/S111:
Q: What type of cooling does the RD51.1-4N-007-L-NN-FW/S111 drive controller use?
A: The RD51.1-4N-007-L-NN-FW/S111 features forced air cooling for thermal management.
Q: What is the rated power of the RD51.1-4N-007-L-NN-FW/S111 drive controller?
A: This model operates with a rated power output of 7.5 kW.
Q: What is the input voltage range for the RD51.1-4N-007-L-NN-FW/S111?
A: The voltage range for this drive controller is 380 to 480 V with a tolerance of ±10%.
Q: What control method is utilized by the RD51.1-4N-007-L-NN-FW/S111 drive controller?
A: The RD51.1-4N-007-L-NN-FW/S111 uses U/f curve control as its control type.
Q: Does the RD51.1-4N-007-L-NN-FW/S111 include a mains filter?
A: This drive controller comes with an integrated mains filter for electrical noise reduction.
