RD51.1-5N-003-L-C1-FW Bosch Rexroth Indramat
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MPN: R911200162
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The Bosch Rexroth Indramat RD51.1-5N-003-L-C1-FW is a drive controller from the RD 500 Drive Controllers series with a rated power of 3.0 kW and operates on a 500 V supply. This model features U/f curve control, forced air cooling, and does not include a built-in brake chopper. It supports 24 V external standby power for loads up to 110 kW and requires a three-phase AC converter supply.
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Product Description:
The RD51.1-5N-003-L-C1-FW is a variable-frequency drive controller produced by Bosch Rexroth Indramat within the RD 500 Drive Controllers series. As an AC converter module, it supplies regulated power to induction motors used in conveyors, mixers, and other automated machinery. It processes incoming three-phase power and adjusts output frequency and voltage so the connected motor can deliver adjustable torque and speed during operation. This operating method helps maintain smoother motor response in applications that need repeatable speed control during changing load conditions.
The unit uses U/f curve control, which keeps the ratio between voltage and frequency constant to help prevent magnetic saturation at low speeds. Its input stage is a 3 x AC converter input, so it accepts three-phase mains and internally rectifies and inverts the supply for the motor. The permissible line voltage reaches 500 V, which suits industrial distribution systems in the 460 V class. At the motor terminals, the drive can provide 3.0 kW of continuous output power for small to medium pumps or fans. Heat is removed by forced air cooling, so airflow across the rear heat sink must remain unobstructed. The controller is supplied without a built-in brake chopper, so rapid deceleration may require an external braking resistor.
The controller is in design generation 1, which identifies the first release of this version in the product line. For control cabinet standby, the drive accepts an auxiliary feed that provides 24 V standby power, allowing stored parameters and control logic to remain active while the main power stage is de-energized. Because the auxiliary supply is separate from the power stage, interface functions can remain available during planned stops or main disconnect events. This arrangement supports faster return to operation when the three-phase input is restored.
Frequently Asked Questions about RD51.1-5N-003-L-C1-FW:
Q: What is the rated power output of the RD51.1-5N-003-L-C1-FW drive controller?
A: The RD51.1-5N-003-L-C1-FW drive controller operates with a rated power of 3.0 kW.
Q: What control method does the RD51.1-5N-003-L-C1-FW drive controller utilize?
A: This model uses U/f curve control for motor management.
Q: What type of stand-by power is needed for the RD51.1-5N-003-L-C1-FW drive controller?
A: The RD51.1-5N-003-L-C1-FW requires an external 24 V stand-by power supply for operation up to 110 kW.
Q: How is the RD51.1-5N-003-L-C1-FW drive controller cooled?
A: Cooling for this unit is managed by forced air ventilation.
Q: Does the RD51.1-5N-003-L-C1-FW come with a built-in brake chopper?
A: This drive controller does not include a built-in brake chopper.
