RS51.1-4G-003-L-V1-FW Bosch Rexroth Indramat
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MPN: R911200263
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The Bosch Rexroth Indramat RS51.1-4G-003-L-V1-FW is a basic drive from the RD 500 Drive Controllers series with a rated power of 3 kVA and supports a voltage range of 380 to 480 volts. It features built-in brake chopper and resistor, U/f curve control, and uses forced air cooling. The drive has an integrated mains filter and allows 24 V external stand-by power.
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Product Description:
The RS51.1-4G-003-L-V1-FW is manufactured by Bosch Rexroth Indramat and belongs to the RD 500 Drive Controllers series. It is classified as a basic drive and serves as the power conversion element in automation panels for variable-speed operation of standard three-phase induction motors. This type of controller is commonly used in material-handling and process equipment where stable speed adjustment is required for everyday duty. Rather than serving as a high-performance servo, it is intended for dependable motor control in general industrial systems. It is suited to installations that need practical speed regulation without the complexity of servo positioning.
This model uses a three-phase AC input stage and accepts line voltages from 380 to 480 V. Within that range, the device remains functional even if the incoming supply varies by ±10 %, which helps it tolerate moderate line fluctuations without interrupting operation. Its apparent output is rated at 3 kVA, making it suitable for light-to-medium mechanical loads on pumps, fans, and conveyors. Speed adjustment is carried out through U/f curve control, which keeps the stator flux nearly constant by linking output voltage to frequency in proportion to motor demand. This control method is a practical choice when the application needs straightforward speed control instead of closed-loop vector performance.
The unit uses a built-in brake chopper and resistor to dissipate regenerated energy during fast deceleration, so external dump hardware is not required. Heat from the power semiconductors is removed by forced air cooling, which supports continuous operation at the stated power level and helps maintain internal temperature control. An integrated line filter helps limit conducted interference so the controller can share a cabinet with sensitive control electronics. For standby control needs, the unit supports 24 V standby power from an external source, allowing logic and I/O functions to remain active when the main power section is off. The controller uses a generation 1 layout.
Frequently Asked Questions about RS51.1-4G-003-L-V1-FW:
Q: What control type is used in the RS51.1-4G-003-L-V1-FW drive controller?
A: The RS51.1-4G-003-L-V1-FW uses U/f curve control for its motor regulation.
Q: Is a brake chopper integrated in the RS51.1-4G-003-L-V1-FW?
A: This drive controller comes with a built-in brake chopper and resistor factory-installed.
Q: What type of electrical supply does the RS51.1-4G-003-L-V1-FW require?
A: The RS51.1-4G-003-L-V1-FW is designed for operation on a 3-phase AC supply.
Q: What is the rated power output of the RS51.1-4G-003-L-V1-FW?
A: It operates with a rated power of 3 kVA, accommodating moderate power loads.
Q: What cooling method does the RS51.1-4G-003-L-V1-FW utilize?
A: This unit uses forced air cooling for effective heat dissipation during operation.
