Siemens SIMOREG 6RA7031-6DV62-0 DC-MASTER Converter

Description

The Siemens 6RA7031-6DV62-0 is a high-performance, fully digital DC drive from the SIMOREG DC-MASTER family. This 4-quadrant converter is engineered for precise speed and torque control of DC motors, making it ideal for complex industrial applications that require regenerative braking and rapid reversing. With an output current of 125A, it provides robust power for a wide range of machinery. This unit also comes with several software CDs for commissioning and maintenance, including MotionManager and Micromaster documentation.

Specifications

• Manufacturer: Siemens
• Product Series: SIMOREG DC-MASTER
• Order Number (MLFB): 6RA7031-6DV62-0
• Rated Armature Output Current: 125 A
• Armature Input Voltage: 3-phase AC 400 V
• Armature Output Voltage: DC +/- 420 V
• Field Supply Input: 2-phase AC 400 V
• Field Supply Output: DC 325 V, 10 A
• Operation: 4-Quadrant (regenerative feedback)
• Cooling Method: Natural Convection (AN)

Label Info

• Prod State: A2
• Serial No: S Q6R00753320065
• Compliance: CE, UL Listed (POW.CONV.EQ. 94UA)

Application

This DC drive is suitable for applications such as rolling mills, wire-drawing machines, extruders, test stands, and other industrial processes where precise control of DC motors is critical.

Country of Origin

Made in Austria.

CO2 Impact

Opting for this pre-owned Siemens SIMOREG drive prevents the production of a new unit, saving an estimated 274 kg of CO2 emissions. This conservation effort is a significant step towards more sustainable industrial operations.

Availability

This item is a used unit but is in good working condition. It is available for immediate dispatch. Order now from PLC2Day for expert support and fast delivery.

FAQ

Question?
What is the difference between a 2-quadrant and a 4-quadrant drive like this 6RA7031-6DV62-0?

A 2-quadrant drive can control motor speed and torque in one direction and brake in the same direction. A 4-quadrant drive, like this SIMOREG DC-MASTER, can control speed and torque in both forward and reverse directions, and also provides regenerative braking in both directions. This is essential for applications with frequent stopping, reversing, or overhauling loads.

Question?
Does this drive require an external field supply?

No, the 6RA7031-6DV62-0 has an integrated field supply unit. The label shows a dedicated 2AC 400V input for the field, providing a DC 325V, 10A output to the motor's field winding, simplifying the overall system design.

Question?
Can this older SIMOREG DC-MASTER be integrated into a modern automation system with Profinet?

Natively, the SIMOREG 6RA70 series communicates via Profibus DP with an optional expansion module. To integrate it into a Profinet network, a Profinet-to-Profibus gateway or proxy would be required, acting as a bridge between the new controller and the drive. Direct Profinet communication is a feature of its successor, the SINAMICS DCM series.

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Current Date: Friday, March 13, 2026