RD52.3-8C-045-L-LV-FW Bosch Rexroth Indramat
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MPN: R911203282
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The Bosch Rexroth Indramat RD52.3-8C-045-L-LV-FW is a drive controller from the RD 500 Drive Controllers series that offers field oriented vector control and operates on a voltage range of 700 V. This third generation SFT inverter provides a rated power of 45 kW and is equipped with forced air cooling and external 24 V stand-by power.
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Product Description:
The RD52.3-8C-045-L-LV-FW drive controller is produced by Bosch Rexroth Indramat within the RD 500 Drive Controllers series. As a stand-alone inverter module, it converts a stabilized DC link into a regulated three-phase output for induction or synchronous motors used in material handling, packaging, and general automation cells. The unit delivers precise torque and speed regulation through vector algorithms, helping the connected motor respond consistently to changing loads. Because it works from a shared DC bus, the controller fits systems that separate rectification from the motor-side power stage. This arrangement is common in modular drive cabinets where several axes use a common energy source.
This controller supplies up to 45 kW when tied to a DC link of up to 700 V. Its platform uses field-oriented vector control, separating flux and torque so dynamic response is retained during acceleration and speed changes. By controlling motor flux and torque independently, the controller can maintain stable speed under varying load conditions and support responsive acceleration. Internal thermal management relies on forced air cooling, and unobstructed airflow keeps the heat sinks within operating limits during continuous use. The input side uses Inverter DC, allowing the module to share a common supply with rectifier or regenerative units, and the unit is configured as an SFT inverter for this type of drive system.
The unit belongs to design generation 3, and it supports advanced diagnostics such as feedback of cable damping (C3, D3) to help compensate for voltage drop on long motor leads. This can improve output voltage accuracy at the motor terminals when cable lengths are substantial. Control electronics can remain energized by an external 24 V standby power source, so communication and parameter access remain available while the main DC link is de-energized. In many installations, the controller operates as RD51 SFT, providing functional compatibility with earlier RD51 application setups. The base hardware is supplied without preloaded application software, so the software package is selected separately for the intended use.
