RD51.1-4N-004-L-V1-FW Bosch Rexroth Indramat
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MPN: R911200259
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The Bosch Rexroth Indramat RD51.1-4N-004-L-V1-FW is part of the RD 500 Drive Controllers series and operates as a drive controller with U/f curve control. It uses forced air cooling, has an integrated mains filter, and runs on a 3 phase AC supply with a voltage range of 380 to 480 V. This model features 24 V stand-by power that is external and does not include a built-in brake chopper.
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Product Description:
The RD51.1-4N-004-L-V1-FW drive controller is manufactured by Bosch Rexroth Indramat and belongs to the RD 500 Drive Controllers series. As a converter section for three-phase induction motors, it adjusts motor speed and torque to match process requirements in conveyor lines, pumps, and other automated plant equipment. By modulating output frequency and voltage, the unit provides coordinated control between the supply network and the connected machine, improving energy efficiency and supporting long service life in industrial automation cells.
The unit uses U/f curve control, which maintains a proportional relationship between stator voltage and frequency so magnetizing flux stays stable across the working range. Thermal management is handled by forced air cooling, which channels cabinet air through the heat sink to sustain rated output current without derating. An integrated mains filter suppresses high-frequency disturbances and reduces conducted emissions back onto the plant power bus. For the control electronics, the drive accepts an auxiliary supply of 24 V standby power, allowing parameter retention and fieldbus communication while the main line is isolated. The power section operates within a line-voltage range of 380 to 480 V, enabling use on common low-voltage industrial grids.
The power stage is supplied without a built-in brake chopper, so regenerative energy must be handled by an external resistor or returned to the supply bus when braking energy is present. Connection to the mains uses a 3 x AC converter topology that rectifies and inverts three-phase input to match the output frequency required by the selected U/f profile. The controller accepts line variations of ±10%, which helps it tolerate moderate voltage dips or surges in mixed-load panels. The unit is part of Design Generation 1.
Frequently Asked Questions about RD51.1-4N-004-L-V1-FW:
Q: Does the RD51.1-4N-004-L-V1-FW include a mains filter?
A: The RD51.1-4N-004-L-V1-FW is equipped with integrated mains filtering for smoother operation and compliance with electrical noise standards.
Q: What voltage range does the RD51.1-4N-004-L-V1-FW support?
A: This drive controller operates with a voltage range of 380 to 480 V, accommodating various industrial power supplies.
Q: What cooling method does the RD51.1-4N-004-L-V1-FW use?
A: The RD51.1-4N-004-L-V1-FW model uses a forced air cooling system to maintain optimal operating temperatures.
Q: What control type is implemented in the RD51.1-4N-004-L-V1-FW?
A: This model features U/f curve control, suitable for applications requiring variable frequency control of AC motors.
Q: Is an integrated brake chopper included in the RD51.1-4N-004-L-V1-FW?
A: The RD51.1-4N-004-L-V1-FW is designed without a built-in brake chopper, so external solutions may be needed for braking functions.
