RD51.1-4N-004-L-NN-FW Bosch Rexroth Indramat
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MPN: R911200039
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The Bosch Rexroth Indramat RD51.1-4N-004-L-NN-FW is a drive controller from the RD 500 Drive Controllers series. It uses U/f curve control, operates on a voltage range of 380 to 480 V, and has a built-in mains filter. The controller employs forced air cooling and does not include a built-in brake chopper.
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Product Description:
The RD51.1-4N-004-L-NN-FW is a drive controller manufactured by Bosch Rexroth Indramat and supplied within the RD 500 Drive Controllers series. As a converter-based unit, it regulates the speed and torque of three-phase induction motors in automated plant equipment. Installed in a control cabinet, it links incoming mains power to downstream motor circuits and adjusts output frequency to match process demand. This makes it suitable for conveyor systems, pumps, fans, and other general machinery that need stable variable-speed operation. Its control function helps the connected motor respond smoothly to changing load conditions during routine production cycles.
It draws power through a three-phase AC converter front end and accepts line voltages from 380 to 480 V. Within this operating range, the hardware tolerates supply variation of ±10%, which supports use on industrial power networks with moderate fluctuation. Output frequency is managed through U/f curve control, a scalar method that matches motor voltage to speed requirements for standard asynchronous machines. A ducted fan assembly provides forced-air cooling, helping maintain semiconductor temperature during continuous duty and supporting steady operation under sustained load.
The unit is supplied without a built-in brake chopper, so applications that need rapid stopping or frequent deceleration require external braking hardware. An integrated mains filter reduces conducted emissions, which helps the controller operate in shared enclosures with other cabinet devices. The unit is part of Design Generation 1 in the RD platform, and it requires a separately ordered firmware subposition for operation. The standard function card bay is not equipped, leaving the expansion slot available for an optional fieldbus or I/O module when additional interface capability is needed.
Frequently Asked Questions about RD51.1-4N-004-L-NN-FW:
Q: What voltage range is supported by the RD51.1-4N-004-L-NN-FW drive controller?
A: The RD51.1-4N-004-L-NN-FW operates on a voltage range of 380 to 480 V AC.
Q: How is the RD51.1-4N-004-L-NN-FW drive controller cooled?
A: This model features forced air cooling for temperature management during operation.
Q: Is a brake chopper built into the RD51.1-4N-004-L-NN-FW drive controller?
A: The RD51.1-4N-004-L-NN-FW does not include a built-in brake chopper.
Q: Is a mains filter integrated into the RD51.1-4N-004-L-NN-FW?
A: An integrated mains filter is provided with this drive controller model.
Q: What type of control does the RD51.1-4N-004-L-NN-FW utilize?
A: This drive controller uses U/f curve control for motor control functionality.
