RD51.1-4B-011-L-C1-FW Bosch Rexroth Indramat
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MPN: R911200598
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The Bosch Rexroth Indramat RD51.1-4B-011-L-C1-FW is a drive controller from the RD 500 Drive Controllers series. It features a built-in brake chopper and an integrated mains filter, and uses forced air cooling. This unit supports U/f curve control and operates on a voltage range of 380 to 480 V with a converter 3 x AC supply.
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Product Description:
Bosch Rexroth Indramat manufactures the RD51.1-4B-011-L-C1-FW, a drive controller positioned within the RD 500 Drive Controllers series. The unit forms the central power stage between a three-phase mains supply and an asynchronous motor, converting line energy into regulated output that matches the required speed and torque profile of automated conveyors, pumps, or process machines. By coordinating voltage and frequency, the controller maintains consistent motor behavior under varying load, enabling precise motion sequences demanded by industrial automation cells.
The controller is fed from a 380 to 480 V utility bus and uses a Converter 3 × AC topology, so its input rectifier and intermediate circuit are sized for symmetrical three-phase grids. A permissible fluctuation of ±10 % around the nominal line removes the need for separate stabilizers in plants with variable mains quality. Motor flux is set through U/f curve control, a linear volts-per-hertz method that suits standard induction motors without encoder feedback. An integrated mains filter suppresses conducted radio-frequency interference, allowing the cabinet to meet electromagnetic compatibility requirements without extra external hardware.
System continuity is supported by a built-in brake chopper that diverts excess DC bus energy during rapid deceleration, protecting both the inverter and the motor. Thermal management relies on forced air cooling, and airflow is guided through heat-sink channels to keep semiconductor junctions within safe limits at rated load. Control electronics can remain active through 24 V standby power, which is supplied from an external source when the main drive is idle but fieldbus monitoring must stay available. As a product of Design Generation 1, the controller belongs to the first release of this model line.
Frequently Asked Questions about RD51.1-4B-011-L-C1-FW:
Q: Does the RD51.1-4B-011-L-C1-FW include a brake chopper?
A: The RD51.1-4B-011-L-C1-FW features a built-in brake chopper, enhancing braking capabilities during operation.
Q: What type of control is used in the RD51.1-4B-011-L-C1-FW drive controller?
A: This model offers U/f curve control, providing simple voltage-frequency regulation for compatible motors.
Q: What cooling method is implemented in the RD51.1-4B-011-L-C1-FW?
A: Forced air cooling is used to manage temperature in the RD51.1-4B-011-L-C1-FW, improving operational reliability.
Q: Is a mains filter included in the RD51.1-4B-011-L-C1-FW drive controller?
A: The RD51.1-4B-011-L-C1-FW is equipped with an integrated mains filter for reduced electrical noise.
Q: What voltage range does the RD51.1-4B-011-L-C1-FW support?
A: This drive controller supports a voltage range from 380 to 480 V for flexible integration in industrial systems.
