RD51.1-5N-022-L-V1-FW Bosch Rexroth Indramat
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MPN: R911200977
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The Bosch Rexroth Indramat RD51.1-5N-022-L-V1-FW belongs to the RD 500 Drive Controllers series and is designed as a converter for 3-phase AC supply at 500 V. This drive controller features U/f curve control, forced air cooling, and a rated power of 22 kW. It includes external 24 V stand-by power and does not have a built-in brake chopper.
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Product Description:
The RD51.1-5N-022-L-V1-FW is a drive controller manufactured by Bosch Rexroth Indramat for the RD 500 Drive Controllers series. It operates as the power stage between a plant’s three-phase mains supply and an asynchronous motor, adjusting output frequency and voltage so equipment such as conveyors, fans, and centrifugal pumps can run at the speed required by the process. By combining control electronics and power semiconductors in one chassis, the unit helps simplify panel layout and supports quick motor response to PLC commands. This type of controller is suited to variable-speed duties where smooth ramping and steady motor control are required instead of fixed-speed operation.
Rated output is 22 kW, and the power section is intended for a supply centered on 500 V. Motor flux is regulated through U/f curve control, which matches voltage to frequency so magnetizing current remains stable across the usable speed range. The supply interface uses a three-phase AC converter topology to rectify and invert the mains before power is delivered to the motor. Internal heat is removed by forced-air cooling directed across the power components, so the enclosure needs airflow that supports continuous operation. The power stage is suitable for standard 50 Hz and 60 Hz industrial distribution systems when the incoming voltage matches the required range.
For auxiliary circuits, the unit uses 24 V standby power from an external supply so the control electronics and fieldbus can remain active when the mains is isolated. Dynamic braking hardware is not built in, because the controller is supplied without a built-in brake chopper; rapid deceleration requires an external chopper or resistor. The unit is Generation 1 in the RD 500 platform, and application-specific parameter sets are stored in flash memory. Stored parameter sets remain available after power cycling, so the controller retains the selected application data. Keeping the low-voltage circuits energized also allows communication and status functions to remain available during a mains shutdown.
Frequently Asked Questions about RD51.1-5N-022-L-V1-FW:
Q: What is the rated output power of the RD51.1-5N-022-L-V1-FW drive controller?
A: The RD51.1-5N-022-L-V1-FW drive controller is rated for 22 kW output power, enabling control of medium to large electric motors.
Q: What type of control method does the RD51.1-5N-022-L-V1-FW use?
A: This model features U/f curve control for managing motor performance.
Q: What is the voltage range supported by the RD51.1-5N-022-L-V1-FW drive controller?
A: The RD51.1-5N-022-L-V1-FW supports a voltage range of 500 V for its operation.
Q: What cooling method is used in the RD51.1-5N-022-L-V1-FW?
A: Forced air cooling is used in this drive controller to maintain safe operating temperatures.
Q: Does the RD51.1-5N-022-L-V1-FW come with a built-in brake chopper?
A: The RD51.1-5N-022-L-V1-FW does not include a built-in brake chopper.
