RD51.1-5N-004-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: R911200372
Ask for AvailabilityThe Bosch Rexroth Indramat RD51.1-5N-004-L-V1-FW is a drive controller from the RD 500 Drive Controllers series. It supports U/f curve control and operates with a converter supply of 3 x AC at 500 V. This unit has forced air cooling and 24 V external standby power, and does not include a built-in brake chopper.
Internal Product Review
The RD51.1-5N-004-L-V1-FW is a Bosch Rexroth Indramat drive controller built for converter 3 x AC applications. U/f curve control and forced air cooling give the unit consistent motor handling and dependable thermal stability under load. External 24 V stand-by power makes this model a strong choice for 500 V drive platforms.
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Product Description:
The RD51.1-5N-004-L-V1-FW is a member of the RD 500 Drive Controllers series manufactured by Bosch Rexroth Indramat. Designed for cabinet installation, this AC inverter converts fixed utility frequency into a modulated output for induction motors over a broad speed range. By adjusting motor voltage and frequency, it supports energy-efficient operation and helps reduce mechanical stress on connected equipment in factory automation cells. Because the output frequency is variable, the drive can match motor speed to process demand instead of running continuously at line frequency. That behavior is useful where process speed changes are frequent, because acceleration and deceleration can be shaped around the load rather than imposed by direct-on-line motor starting.
The controller uses U/f curve control, a scalar method that keeps output voltage proportional to frequency for simple open-loop regulation of standard motors. Its input supply is centered on 500 V three-phase mains, and the unit is electrically classified as Converter 3 x AC, which combines rectification and inversion in one housing. The drive is supplied without a built-in brake chopper, so regenerative energy from overhauling loads must be handled by an external braking module or resistor. This control approach is suited to applications such as fans, pumps, and conveyors that need stable speed control without closed-loop motor feedback. By using scalar control, the inverter emphasizes straightforward motor operation rather than the tighter dynamic response associated with more complex vector or servo systems.
Thermal management uses forced air cooling, so installation clearances must allow airflow through the integrated fan path. The unit is design generation 1, which matches the earliest RD51 mechanical layout and connector arrangement. Control electronics remain active during mains interruptions when an external 24 V standby power supply is available, allowing communication and stored parameters to remain available. Keeping the low-voltage electronics active during a supply drop can help the drive stay ready for control recovery when the main power path returns. Classified as a Drive Controller, the unit provides the power stage for the drive system while motor feedback and higher-level application logic are handled by companion components.
