RD51.1-4N-003-L-V1-FW Bosch Rexroth Indramat
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MPN: R911200175
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The Bosch Rexroth Indramat RD51.1-4N-003-L-V1-FW is a drive controller from the RD 500 Drive Controllers series. It features U/f curve control, a rated power of 3.0 kW, and operates on a 380 to 480 V AC supply with integrated mains filtering. The controller uses forced air cooling and is equipped with 24 V external stand-by power.
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Product Description:
The RD51.1-4N-003-L-V1-FW drive controller from Bosch Rexroth Indramat belongs to the RD 500 Drive Controllers series and is used with three-phase induction motors in factory automation. By modulating converter output, it adjusts motor speed and torque to match changing process demands on conveyors, pumps, and similar loads. This supports smoother acceleration and steady operation when load conditions shift during normal machine use. It is part of design generation 1 and is intended for applications that need adjustable motor speed rather than fixed-speed line operation.
Its electrical interface accepts a three-phase mains supply within a 380-480 V window. The drive uses a 3 x AC converter power stage that rectifies and then inverts the line voltage to create a variable output governed by U/f curve control. This method maintains a constant volts-per-hertz ratio so motor flux remains stable during speed changes, and it suits applications that do not require closed-loop feedback. Continuous output is rated at 3.0 kW, which suits medium-power machinery such as small conveyors and pumps. Heat is removed by forced air cooling, so the heat sink area must remain clear for proper airflow. The allowable mains variation is ±10 %, which helps the controller operate with normal industrial supply fluctuations.
An integrated mains filter attenuates conducted interference and can reduce the need for external EMC components. When the machine is idle, a 24 V standby power input keeps the control logic active so communication and stored settings remain available without energizing the main converter. This allows the control section to remain responsive during planned stop states or brief interruptions of the main power path. The drive is supplied without a built-in brake chopper, so braking energy must be handled by external hardware when the application requires rapid deceleration. An external resistor or regenerative unit can be added in systems where frequent braking energy must be managed outside the controller.
Frequently Asked Questions about RD51.1-4N-003-L-V1-FW:
Q: What is the rated power output of the RD51.1-4N-003-L-V1-FW drive controller?
A: The RD51.1-4N-003-L-V1-FW has a rated power of 3.0 kW.
Q: Does the RD51.1-4N-003-L-V1-FW drive controller include a mains filter?
A: This model is equipped with an integrated mains filter.
Q: What voltage range is supported by the RD51.1-4N-003-L-V1-FW drive controller?
A: The voltage range supported by this unit is 380 to 480 V.
Q: What type of cooling does the RD51.1-4N-003-L-V1-FW drive controller use?
A: The RD51.1-4N-003-L-V1-FW uses forced air cooling for temperature regulation.
Q: Is a brake chopper included in the RD51.1-4N-003-L-V1-FW drive controller?
A: This model does not have a built-in brake chopper.
