RD51.1-4N-005-L-V1-P1-NN-FW Bosch Rexroth Indramat
Wake Industrial LLC is not an authorized distributor of this product.
Wake Industrial LLC is not an authorized distributor of this product.
MPN: R911288926
Ask for AvailabilityThe Bosch Rexroth Indramat RD51.1-4N-005-L-V1-P1-NN-FW is a drive controller from the RD 500 Drive Controllers series with a rated power of 5.5 kW. It operates on a 380 to 480 V supply using U/f curve control and includes an integrated mains filter. The controller is cooled by forced air and features 24 V external stand-by power, but does not have a built-in brake chopper.
Internal Product Review
The RD51.1-4N-005-L-V1-P1-NN-FW is a Bosch Rexroth Indramat drive controller with U/f curve control and 5.5 kW rated power. Forced air cooling and an integrated mains filter support stable operation and clean cabinet integration in converter-based systems. The 380 to 480 V converter 3 x AC supply makes the unit a dependable choice for industrial speed control.
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Product Description:
The RD51.1-4N-005-L-V1-P1-NN-FW is a drive controller produced by Bosch Rexroth Indramat for the RD 500 Drive Controllers series. Designed for cabinet mounting, the unit converts three-phase mains power into a controlled output that matches process demands. This enables variable-speed operation of standard asynchronous motors used in material handling, packaging, and general factory automation tasks. The controller is intended for applications where reliable speed adjustment is more important than high-precision positioning.
It employs U/f curve control, enabling scalar regulation of the motor’s magnetic flux without encoder feedback. This control method is commonly used where simple speed control and predictable torque behavior are sufficient for the driven machine. The inverter section provides a continuous output of 5.5 kW, making it suitable for medium-duty pumps or fans and similar loads that do not require closed-loop servo regulation. Line connection accommodates a nominal 380 to 480 V network, and the internal circuitry tolerates voltage excursions of ±10 % without derating. The power stage uses a 3 × AC supply, so no separate DC-link modules are needed. This arrangement supports steady acceleration profiles and load-dependent speed changes while fitting common industrial power distribution layouts.
Thermal management relies on forced air cooling, with a fan drawing cabinet air across the heat sink to hold semiconductor temperatures within limits during continuous operation. Line interference is minimized by an integrated mains filter, reducing the need for external EMC components in many standard installations. For dynamic braking cases, the unit is supplied without a built-in brake chopper, so an external chopper must be added if regenerative energy exceeds the DC-bus capacity. Control electronics remain active through 24 V standby power, allowing fieldbus monitoring and parameter retention when the main power source is shut down. The standby supply also keeps low-voltage control functions available during planned line-power interruptions.
