RD51.1-7N-090-L-V1-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: R911200799
Ask for AvailabilityThe Bosch Rexroth Indramat RD51.1-7N-090-L-V1-FW is a drive controller from the RD 500 Drive Controllers series. It has a rated power of 90 kW and operates within a voltage range of 530 to 670 V. The unit features U/f curve control, forced air cooling, and does not include a built-in brake chopper.
Internal Product Review
The RD51.1-7N-090-L-V1-FW is a Bosch Rexroth Indramat drive controller built for inverter DC applications with 90 kW rated power. U/f curve control and forced air cooling support stable drive behavior and dependable thermal management in continuous-duty installations. External 24 V stand-by power adds practical integration value, and the 530 to 670 V range is a strong operating highlight.
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Product Description:
Bosch Rexroth Indramat's RD51.1-7N-090-L-V1-FW is a drive controller in the RD 500 Drive Controllers series. It modulates the DC link for three-phase induction motors so automated systems can regulate speed and torque from a common control platform. By converting a constant intermediate circuit voltage into a variable output frequency, the unit supports closed-loop motor control in conveyors, mixers, pump skids, and other process equipment that depends on stable drive behavior. This type of controller is suited to centralized drive systems where several machine sections share power conversion hardware and coordinated command signals. It is intended for industrial motion tasks that require adjustable motor speed without changing the incoming supply characteristics.
The controller delivers a continuous output of 90 kW, which suits high-power motor applications under normal ambient conditions. Its DC link accepts 530 to 670 V, matching the rectified supply range used by compatible front-end modules. Motor excitation uses U/f curve control, so output voltage rises in proportion to frequency to maintain usable magnetic flux in standard squirrel-cage motors. This control method is commonly used where smooth speed adjustment is required across a broad operating range. Heat is removed by forced air cooling, and the housing airflow path should remain unobstructed during installation. The power section is supplied from an inverter DC source, which allows the drive to operate on a common DC bus with other connected modules.
The drive is supplied without a built-in brake chopper, so external braking hardware is required for applications with strong regenerative loads or frequent deceleration. The unit is identified as design generation 1, which places it in the first release platform for this product type. Control electronics can remain active through 24 V stand-by power, allowing diagnostics and control-state functions to remain available when the main DC link is switched off. Keeping the low-voltage electronics active during a main power interruption helps preserve status visibility at the control level and supports controlled restart behavior. This arrangement is useful in systems that need communication and monitoring to remain available during shutdown or power sequencing.
