SIMOVERT MASTERDRIVES 6SE7021-8TP50 | 17.5 Amp AC Converter

Siemens 6SE7021-8TP50 | SIMOVERT MASTERDRIVES Vector Control Compact Plus

The Siemens 6SE7021-8TP50 is a high-performance AC drive belonging to the specialized SIMOVERT MASTERDRIVES Vector Control (VC) series. This "Compact Plus" model provides a space-saving solution for precise motor regulation in complex industrial automation environments. Because it utilizes advanced field-oriented vector control, it delivers exceptional torque accuracy and dynamic response for induction and synchronous motors. The drive provides a steady 17.5 Amp output current and handles power ratings up to 7.5 kW effectively. Moreover, the robust electronic design supports high-speed motor operations with a frequency output reaching up to 650 Hz. This unit remains an essential component for maintaining the operational efficiency of legacy high-precision manufacturing systems.

Operating in a modern factory requires drive hardware that can manage fluctuating loads while maintaining strict energy efficiency standards. This converter unit features integrated control electronics that coordinate complex motion profiles with high-level PLC or CNC commands. In addition, the internal air-cooling system ensures the drive maintains stable temperatures during continuous 24/7 production cycles. While Siemens has transitioned the MASTERDRIVES line to legacy status, the 6SE7021-8TP50 continues to be a vital spare part. Therefore, sourcing this original Siemens drive is a strategic decision to prevent costly downtime and extend the life of your machinery.

Key Features

• Advanced Vector Control Logic: It ensures precise speed regulation and high torque stability for demanding industrial motion tasks.

• Compact Plus Design: The slim physical profile allows for high-density installation within electrical cabinets where space is limited.

• Integrated Protection Suite: Built-in safeguards automatically monitor for overloads, short circuits, and earth faults to protect motor assets.

• High-Frequency Performance: Supports motor speeds requiring up to 650 Hz, which is ideal for high-speed spindle applications.

• Flexible Communication: Compatible with PROFIBUS-DP and serial interfaces to ensure seamless integration into existing automation networks.

Technical Specifications

Frequently Asked Questions (FAQ)

What is the difference between the MASTERDRIVES VC and MC series?

The VC (Vector Control) series is optimized for high-torque accuracy in standard motors, while the MC (Motion Control) series targets high-dynamic servo applications.

Can I use this drive as a standalone unit without a communication bus?

Yes, the 6SE7021-8TP50 can operate as a standalone inverter via digital and analog I/O, though PROFIBUS offers better diagnostic capabilities.

Is this drive compatible with both induction and synchronous motors?

The vector control algorithm is specifically designed to manage both motor types with high efficiency and positioning accuracy.

What should I do if the drive displays an "Overtemperature" fault?

You should immediately check the internal cooling fan for obstructions and verify that the cabinet ventilation provides sufficient airflow for the 7.5 kW load.