Industrial AC Drives Overview

Industrial AC Drives control motor speed, torque, and position. They support open-loop and closed-loop operation. In addition, they work with single- or multi-motor systems. They also support AC induction and servo motors. As a result, they fit many automation applications.

Operating Modes

Industrial AC drives support several control modes. For example, you can configure them for basic speed control or high-performance motion control.

• Open-loop (V/Hz) control
First, use this mode for basic speed control. It works well for single- or multi-motor applications.

• Sensorless vector control
Next, choose this mode for higher torque and tighter speed regulation. It uses vector algorithms and does not require a feedback device.

• Closed-loop vector control
Then, add encoder feedback for full flux vector performance. This setup can deliver full-load torque at standstill. It also enables a highly dynamic speed loop.

• PMAC servo motor control
Additionally, this mode supports permanent magnet AC motors. Use it when you need precise motion control with feedback devices.

• Active front-end regeneration
Finally, use this configuration for four-quadrant operation or continuous braking. It returns energy to the grid. It also helps reduce harmonics and improves power factor.

Feedback Options

Many industrial AC drives support multiple feedback devices. Therefore, you may not need to replace an existing motor. This can reduce cost and speed up upgrades.

• Incremental encoder
• EnDat 2.1 (SinCos) encoder
• Resolver

Engineering Support

When starting a VFD or motor control project, In-Position Technologies engineers review your requirements first. Then we recommend the best-fit industrial AC drive. Next, we validate performance targets and system constraints. As a result, you avoid unnecessary cost and complexity.

This includes:

• Matching motor torque, speed, and inertia
• Confirming compatibility with available power and drive ratings
• Selecting the right feedback device, encoder type, or resolver
• Verifying mounting, form factor, and enclosure requirements
• Specifying required cables, options, and accessories

Complete System Review

When ordering Industrial AC Drives as part of a complete system, IP Tech engineers perform a full solution review. Specifically, we confirm that the system is complete, compatible, and ready to deploy.

• Including all parts and accessories for a working system
• Verifying hardware, software, and accessories work together
• Confirming the final configuration meets performance and reliability goals