High-performance VFD

Oct. 1, 2005
The A700 high-performance variable frequency drive (VFD) can control motors range from 1/2 to 600 horsepower. The A700—a replacement for the A500 and A500L drives—is the first drive from the vendor to include a built-in programmable logic controller.

It also features technologies originally developed for the vendor’s servo drive products, such as adaptive auto-tuning, which automatically compensates for changes in load inertia, resulting in smoother operation, less downtime and lower operating costs. Designed for versatility, the A700 uses encoder feedback to operate in flux-vector mode to generate torque at zero speed and allowing position control. With a speed response time of 300 radians per second—ten times faster than the A500—the A700 reacts quickly and efficiently to sudden load changes. Used without an encoder, the A700 uses the vendor’s “Real Sensorless Vector” algorithm to provide a 200:1 speed range.

Sponsored Recommendations

Rock Quarry Implements Ignition to Improve Visibility, Safety & Decision-Making

George Reed, with the help of Factory Technologies, was looking to further automate the processes at its quarries and make Ignition an organization-wide standard.

Water Infrastructure Company Replaces Point-To-Point VPN With MQTT

Goodnight Midstream chose Ignition because it could fulfill several requirements: data mining and business intelligence work on the system backend; powerful Linux-based edge deployments...

The Purdue Model And Ignition

In the automation world, the Purdue Model (also known as the Purdue reference model, Purdue network model, ISA 95, or the Automation Pyramid) is a well-known architectural framework...

Creating A Digital Transformation Roadmap Using A Unified Namespace

Digital Transformation has become one of the most popular buzzwords in the automation industry, often used to describe any digital improvements to industrial technology. But what...