RD51.1-4N-005-L-V1-FW Bosch Rexroth Indramat
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MPN: R911200040
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The RD51.1-4N-005-L-V1-FW is a drive controller manufactured by Bosch Rexroth Indramat and is part of the RD 500 Drive Controllers series. It features U/f curve control with forced air cooling, a rated power of 5.5 kW, and operates on a voltage range of 380 to 480 V with an integrated mains filter. The unit is a converter type with 3-phase AC supply and comes without a built-in brake chopper.
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Product Description:
The RD51.1-4N-005-L-V1-FW is a drive controller manufactured by Bosch Rexroth Indramat for the RD 500 Drive Controllers series. Installed between a plant’s three-phase mains and an induction motor, it shapes the electrical output so mechanical equipment can follow programmed speed profiles. This type of controller is commonly used in conveyors, pumps, fans, and other industrial equipment that benefits from adjustable motor speed during normal operation. The unit belongs to design generation 1 and is intended for cabinet mounting in industrial control enclosures.
Input power is accepted from a three-phase AC converter supply. Within this topology, the unit tolerates line variations from 380 to 480 V and maintains full function within a margin of ±10 %. Speed regulation is performed with U/f curve control, which links output frequency and voltage to keep stator flux stable during operation. Because this method follows a fixed voltage-to-frequency relationship, it is well suited for applications that need dependable speed adjustment without closed-loop motor feedback. The power section is sized for a continuous mechanical output of 5.5 kW, making the drive suitable for mid-range conveyor sections, auxiliary pumps, and similar industrial loads.
Thermal management is handled by forced air cooling, and a rear-mounted fan moves cabinet air across the heat sink to stabilize semiconductor temperature during cyclic loading. The cooling layout works best when the enclosure provides a clear airflow path around the heat-dissipating surfaces. Line-side emissions are reduced by an integrated mains filter, which attenuates conducted interference and reduces the need for external RFI components. The unit is supplied without a built-in brake chopper, so applications that require rapid deceleration need an external resistor module. Control electronics remain energized through 24 V stand-by power from an auxiliary supply, allowing status monitoring and communication to remain available when the main converter is de-energized.
Frequently Asked Questions about RD51.1-4N-005-L-V1-FW:
Q: What supply voltage range does the RD51.1-4N-005-L-V1-FW drive controller support?
A: The RD51.1-4N-005-L-V1-FW is rated for a supply voltage range of 380 to 480 V.
Q: What is the power rating of the RD51.1-4N-005-L-V1-FW drive controller?
A: This model is rated for 5.5 kW, suitable for medium power applications.
Q: What type of control method does the RD51.1-4N-005-L-V1-FW use?
A: The RD51.1-4N-005-L-V1-FW operates using U/f curve control.
Q: What cooling method is used in the RD51.1-4N-005-L-V1-FW?
A: This drive controller features forced air cooling to maintain operational temperature.
Q: Does the RD51.1-4N-005-L-V1-FW drive controller have a mains filter?
A: It includes an integrated mains filter for electrical noise reduction.
