RD51.1-5B-007-D-CF-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: R911203260
Ask for AvailabilityThe Bosch Rexroth Indramat RD51.1-5B-007-D-CF-FW is a drive controller in the RD 500 Drive Controllers series with a rated power of 7.5 kW and supports a voltage range of 500 V. This controller features a built-in brake chopper, U/f curve control, and uses a plug-through cooler for cooling. It is designed for use with a converter 3 x AC supply and includes the combination of C1 and F1 functions.
Internal Product Review
The RD51.1-5B-007-D-CF-FW is a drive controller for 3 x AC converter supply and 500 V operation. U/f curve control and a built-in brake chopper give the platform dependable speed regulation and effective deceleration handling. The plug-through cooler supports efficient cabinet integration, making this 7.5 kW unit a strong RD 500 series option.
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Product Description:
The RD51.1-5B-007-D-CF-FW is a drive controller produced by Bosch Rexroth Indramat within the RD 500 Drive Controllers series. It links a three-phase mains supply to an induction motor, adjusting voltage and frequency so that motor speed matches the real-time demands of industrial automation lines. All power electronics, gating logic, and monitoring circuits are contained in one enclosure, giving panel builders a single unit for variable-speed control without separate converter components. That arrangement helps process equipment ramp up smoothly and respond to changing load conditions without direct-on-line motor operation.
The controller supplies up to 7.5 kW of continuous mechanical power, which suits medium-duty pumps, fans, and conveyors. Its input section is rated for 500 V operation, allowing direct connection to higher-voltage factory grids. Because it is a 3 × AC converter, it rectifies three-phase AC, stores energy in a DC link, and then synthesizes variable-frequency output for the motor. Motor flux is regulated through U/f curve control, which maintains a constant voltage-to-frequency ratio so torque remains steady as speed changes. This control method is commonly used where reliable speed adjustment is needed without more complex vector tuning. Heat from the IGBTs is removed by a plug-through cooler for units up to 110 kW; this mounting style projects the heat sink outside the enclosure wall, reducing cabinet temperature rise and simplifying airflow design.
During rapid deceleration or overhauling loads, a built-in brake chopper directs surplus DC-link energy to an external resistor, preventing overvoltage faults. When a braking resistor is connected, regenerated energy can be dissipated instead of forcing the DC bus voltage upward. Functional flexibility is provided by Combination: C1 + F1, which combines standard speed regulation with extended fieldbus features. The unit is part of design generation 1, so its option slots and dimensions follow the first RD51 mechanical layout. The firmware is ordered as a separate subposition, allowing the required software package to be selected for the intended control setup.
