RD51.1-4B-030-L-C1-FW Bosch Rexroth Indramat
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MPN: R911200593
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The Bosch Rexroth Indramat RD51.1-4B-030-L-C1-FW is a drive controller from the RD 500 Drive Controllers series. It features a built-in brake chopper, integrated mains filter, and supports U/f curve control. The controller is rated for 30 kW power, operates with a voltage range of 380 to 480 V, and uses forced air cooling.
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Product Description:
The RD51.1-4B-030-L-C1-FW is a Bosch Rexroth Indramat drive unit in the RD 500 Drive Controllers series. It is installed in control cabinets to manage the operating speed of three-phase induction motors on conveyors, pumps, and material-handling axes. By converting fixed-frequency line power into an adjustable output, the unit allows production equipment to match motor torque to real-time process demands while reducing energy losses and mechanical wear. The device fits into existing automation architectures and exchanges status or command signals with higher-level PLCs through standard I/O channels.
The power section is a three-phase AC converter, so the drive accepts three-phase line supplies. Its permitted input spans 380 to 480 V, with a tolerance window of ±10 % that keeps the inverter operating when plant voltage deviates from nominal. Within this range, the module delivers a continuous output of 30 kW to the connected motor. Speed modulation is based on U/f curve control; the controller maintains a proportional relationship between output voltage and frequency, helping the motor keep stable magnetic flux during acceleration and partial-load operation. This generation 1 design uses application-specific parameters matched to the intended task.
Thermal and protective features are integrated into the hardware. A built-in brake chopper dissipates regenerative energy during rapid deceleration, preventing DC-bus overvoltage. Heat generated by the IGBTs is removed through forced air cooling, so cabinet airflow must be maintained to preserve component life. Line-side disturbances are attenuated by the integrated line filter, allowing the drive to meet typical plant EMC limits without additional external filters. For the control electronics, the unit can be supplied from a separate circuit that provides 24 V stand-by power. This keeps the control board active for communication and parameter retention even when the main converter is de-energized.
Frequently Asked Questions about RD51.1-4B-030-L-C1-FW:
Q: What type of brake chopper is included in the RD51.1-4B-030-L-C1-FW?
A: The RD51.1-4B-030-L-C1-FW drive controller features a built-in brake chopper for dynamic braking applications.
Q: What is the control type of the RD51.1-4B-030-L-C1-FW drive controller?
A: This drive controller utilizes U/f curve control for adjusting motor speeds and performance.
Q: How is the RD51.1-4B-030-L-C1-FW cooled?
A: Forced air cooling is used in the RD51.1-4B-030-L-C1-FW to manage its operating temperature.
Q: What is the rated power output of the RD51.1-4B-030-L-C1-FW?
A: The RD51.1-4B-030-L-C1-FW is rated for 30 kW of output power.
Q: What is the acceptable supply voltage range for the RD51.1-4B-030-L-C1-FW drive controller?
A: It is designed to operate on a supply voltage range of 380 to 480 V AC.
