RD51.1-5B-004-L-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: R911203223
Ask for AvailabilityThe Bosch Rexroth Indramat RD51.1-5B-004-L-CF-FW is a drive controller from the RD 500 Drive Controllers series. It features built-in brake chopper functionality and supports U/f curve control with forced air cooling. The unit operates as a converter on 3-phase AC with a voltage range of 500 V.
Internal Product Review
The RD51.1-5B-004-L-CF-FW is a Bosch Rexroth Indramat drive controller designed for converter 3 x AC supply and a 500 V range. U/f curve control supports stable motor management, while forced air cooling promotes dependable operation in continuous-duty service. The built-in brake chopper adds valuable braking functionality, making this RD 500 unit a strong choice for industrial drive applications.
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Product Description:
The RD51.1-5B-004-L-CF-FW is a drive controller produced by Bosch Rexroth Indramat within the RD 500 Drive Controllers series. The unit converts three-phase line power into a variable AC output so that induction or synchronous machines can be speed regulated in conveyors, mixers, and general automation cells. By adjusting voltage and frequency simultaneously, the controller provides simple open-loop regulation where tight feedback loops are not required. This control method is commonly used where process stability is more important than exact axis position. It is suited to applications that need adjustable motor speed rather than servo-level positioning accuracy.
To handle regenerative energy produced during rapid stopping, the controller contains a built-in brake chopper that diverts excess DC-link voltage to an external resistor. The selectable U/f curve control profile links output voltage to frequency, allowing the motor to maintain magnetizing current across the speed range without closed-loop sensors. Thermal management relies on forced air cooling; a rear-mounted fan directs airflow across the heat sink so the device can operate continuously inside enclosed cabinets. Mains connection uses a three-phase AC converter topology, accepting three-phase supply power and rectifying it inside the controller. The power section is sized for up to 500 V on the DC bus, matching common 480 V class industrial networks.
As a design generation 1 member, the hardware layout and terminal map correspond to the first release of the RD 500 platform. The functional profile identified as combination C1 + F1 pairs the base control board with a standard I/O and feedback card set, enabling basic speed commands, digital status reporting, and fault diagnostics. The available I/O arrangement supports straightforward connection of run commands, reference values, and status signals through the standard control interface. System software is not preloaded, so firmware is ordered as a separate subposition to match the required feature set for the machine.
