RD51.1-4N-022-L-D1-FW Bosch Rexroth Indramat
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MPN: R911200896
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The Bosch Rexroth Indramat RD51.1-4N-022-L-D1-FW is a drive controller from the RD 500 Drive Controllers series. It offers a rated power of 22 kW and operates with a voltage range from 380 to 480 V on a three-phase AC supply. The controller features U/f curve control, forced air cooling, and an integrated mains filter.
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Product Description:
The RD51.1-4N-022-L-D1-FW is a drive controller manufactured by Bosch Rexroth Indramat and assigned to the RD 500 Drive Controllers series. The unit modulates the voltage and frequency delivered to asynchronous motors, allowing speed regulation in conveyor, pump, and fan stations used in automated lines. By converting fixed mains power into a variable output, the controller supports programmable process sequences and lets motor speed track changing load requirements across the installation. It is suited to variable-speed duties where process demand changes during operation, such as moving product, circulating fluids, or managing airflow.
It accepts a three-phase AC supply, and the permissible line voltage spans 380 to 480 V so the device can be connected to common industrial feeders. Output capacity is rated at 22 kW, which sets the continuous motor power the integrated IGBT stage can support during normal operation. Line fluctuations are handled inside a tolerance window of ±10 %, reducing the chance of unnecessary shutdowns when plant voltage varies. For torque production, the regulator uses U/f curve control, maintaining a constant volts-per-hertz ratio so magnetizing current remains stable across the speed range. This control method is commonly used where steady speed adjustment is required without the added complexity of closed-loop motor feedback.
Thermal management relies on forced air cooling, with an internal fan channeling air from the lower chassis to the heat sink fins. Protective hardware such as an integrated mains filter helps reduce conducted emissions, and braking energy must be handled externally because the design is without a built-in brake chopper. Field wiring is simplified by a NAMUR terminal strip that groups low-level signals, and a 24 V stand-by input keeps the control logic energized during mains outages. That standby arrangement allows control circuits to remain active for status retention and orderly response when the main supply drops away. The product belongs to design generation 1.
Frequently Asked Questions about RD51.1-4N-022-L-D1-FW:
Q: Does the RD51.1-4N-022-L-D1-FW include a mains filter?
A: The RD51.1-4N-022-L-D1-FW features integrated mains filtering, offering embedded electrical noise reduction for your application.
Q: What power supply and voltage range does the RD51.1-4N-022-L-D1-FW support?
A: The drive requires a three-phase AC supply and operates within a voltage range of 380 to 480 V.
Q: What control type does the RD51.1-4N-022-L-D1-FW utilize?
A: This model uses U/f curve control to manage motor speed and torque.
Q: What cooling method is used by the RD51.1-4N-022-L-D1-FW?
A: The RD51.1-4N-022-L-D1-FW is cooled with forced air, requiring airflow for optimal performance.
Q: What is the rated power output of the RD51.1-4N-022-L-D1-FW?
A: This drive controller is rated for a power output of 22 kW.
