RD52.1-4B-022-L-NN-NN-NN-FW Bosch Rexroth Indramat
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MPN: R911289498
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The Bosch Rexroth Indramat RD52.1-4B-022-L-NN-NN-NN-FW is a drive controller from the RD 500 Drive Controllers series. It features a built-in brake chopper and supports field oriented vector control with forced air cooling. This device operates at a rated power of 22 kW and is compatible with a voltage range of 380 to 480 V using a 3-phase AC converter supply.
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Product Description:
The RD52.1-4B-022-L-NN-NN-NN-FW is a drive controller manufactured by Bosch Rexroth Indramat as part of the RD 500 Drive Controllers series. It is intended for integration into cabinet-mounted inverter assemblies where it converts three-phase line power into regulated motor voltage and frequency. Within an automated plant, the unit modulates speed, torque, and direction so conveyors, pumps, or positioning axes follow commands from a higher-level PLC. Because the product combines the power stage and control electronics in one housing, it simplifies wiring and helps reduce panel space.
The control method is field-oriented vector control, which maintains real-time alignment between stator currents and rotor flux to support precise torque response even at low speed. The power section is rated for 22 kW, allowing it to drive medium-sized asynchronous or synchronous machines in continuous duty. Incoming energy is accepted from a 380 to 480 V mains supply through a 3 × AC converter front end. The device tolerates line variations of ±10 %, so it can continue operating through modest grid fluctuation. These electrical limits set the acceptable range for compatible motors and transformer sizing.
Thermal and dynamic demands are handled by a built-in brake chopper that diverts regenerative energy into an external resistor and by forced-air cooling, which moves heat away from the heat sink with a fan mounted in the housing. Line-side interference is reduced by an integrated mains filter, which removes the need for separate EMC hardware in many installations. The hardware platform corresponds to Generation 1, so the unit matches the first design cycle for this platform. The option slots are not equipped, which allows additional I/O or communication modules to be added later if needed.
Frequently Asked Questions about RD52.1-4B-022-L-NN-NN-NN-FW:
Q: What is the rated power output of the RD52.1-4B-022-L-NN-NN-NN-FW drive controller?
A: The RD52.1-4B-022-L-NN-NN-NN-FW drive controller has a rated power output of 22 kW.
Q: Does the RD52.1-4B-022-L-NN-NN-NN-FW include a brake chopper?
A: This model is equipped with a built-in brake chopper for dynamic braking applications.
Q: What type of control does the RD52.1-4B-022-L-NN-NN-NN-FW use?
A: The control type for this drive controller is field oriented vector control, allowing precise motor management.
Q: How is the RD52.1-4B-022-L-NN-NN-NN-FW cooled?
A: The device operates with forced air cooling for thermal management during operation.
Q: What type of supply and voltage range does the RD52.1-4B-022-L-NN-NN-NN-FW support?
A: This drive controller is designed for converter 3-phase AC supply and supports a voltage range from 380 to 480 V.
