RD51.1-7N-090-L-V1-FW Bosch Rexroth Indramat
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MPN: R911200799
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The 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.
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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.
Frequently Asked Questions about RD51.1-7N-090-L-V1-FW:
Q: What is the rated power output of the RD51.1-7N-090-L-V1-FW drive controller?
A: The RD51.1-7N-090-L-V1-FW drive controller offers a rated power output of 90 kW.
Q: What type of control method does the RD51.1-7N-090-L-V1-FW use?
A: This model uses U/f curve control for converting input signals to drive the motor.
Q: What supply voltage range is supported by the RD51.1-7N-090-L-V1-FW?
A: The RD51.1-7N-090-L-V1-FW supports a supply voltage range of 530 to 670 V.
Q: How is cooling achieved in the RD51.1-7N-090-L-V1-FW drive controller?
A: Forced air cooling is used for temperature regulation in this drive controller.
Q: Does the RD51.1-7N-090-L-V1-FW have an integrated brake chopper?
A: This drive controller does not include a built-in brake chopper.
