SIEMENS 6RA2787-4DV57-0AA0

Siemens SIMODRIVE DC Static Converter 850A 6RA2787-4DV57-0AA0 Description The Siemens 6RA2787-4DV57-0AA0 is a fully digital static converter from the SIMODRIVE 6RA27 series, designed for 4-quadrant DC motor control. This powerful 850A unit provides precise speed and torque regulation for demanding industrial applications. It is an ideal spare part for extending the life of existing machinery that relies on the robust and proven SIMODRIVE platform. This unit appears to be new old stock, supplied in its original packaging. Specifications Manufacturer: Siemens Series: SIMODRIVE 6RA27 Type: Digital Static Converter (DC Drive) Rated Current: 850 A Control Type: 4-Quadrant (regenerative drive) Input Voltage: 3-phase AC 380 V to 460 V Cooling: Forced air cooling with integrated fans Label Info Model: 6RA2787-4DV57-0AA0 Serial Number: Q6F203632532 Description: D380/850 MREQ-GDGF 4 V57 Software Version: 3.3 Hardware Version: A5 Application This drive is suitable for a wide range of heavy-duty industrial applications, including rolling mills, extruders, test stands, printing presses, and other machinery requiring precise control of large DC motors. Country of Origin Made in Austria. CO2 Impact By reusing this component, you help avoid the carbon emissions associated with manufacturing a new product. This choice saves an estimated 1340 kg of CO2, which is comparable to the emissions from driving a car for over 6700 kilometers. Availability This item is in stock and ready for immediate dispatch. It is an obsolete component, and availability is limited. Order now from profideals for expert support and fast delivery. FAQ Question?What is the difference between a 2-quadrant and a 4-quadrant drive like this 6RA2787-4DV57-0AA0?A 2-quadrant drive can only control motor speed in one direction (motoring) and brake it. A 4-quadrant drive, like this model, can control the motor in both forward and reverse directions and also perform regenerative braking in both directions. This means it can feed energy back to the power supply during deceleration, which is crucial for applications with frequent starts, stops, and load reversals. Question?This is an obsolete SIMODRIVE unit. Can it be parameterized with modern Siemens software like TIA Portal?No, the SIMODRIVE 6RA27 series is not compatible with TIA Portal. It requires older, specific Siemens commissioning software, such as DriveMonitor, which was designed for the SIMOVERT and SIMODRIVE families. Ensure you have the correct software and hardware (e.g., a serial interface) for commissioning or parameter changes. Question?What are the critical installation requirements regarding ventilation for an 850A drive of this size?For a high-power drive like this, maintaining proper airflow is essential to prevent overheating. The unit has powerful built-in fans. You must ensure that the cabinet it is installed in has adequate ventilation intake and exhaust, with no obstructions to the drive’s air inlets and outlets. Adhere strictly to the clearance specifications provided in the Siemens installation manual to guarantee sufficient cooling airflow. Last Update: Friday, March 13, 2026 profideals is not an authorized distributor, reseller or representative of the products featured on this website. All product names, trademarks, brands and logos used on this site are the property of their respective owners.