Screw compressor becomes energy efficient

Article published January 2017, System Integration & Control Systems Design

ABB does it again… screw compressor becomes energy efficient.

PSY Intl. a control specialist and Air Rotory Services (Pty) Ltd. a compressor specialist recently collaborated to create an energy efficient screw compressor.

Paul Young from PSY believes the key was in using a frequency converter: the ABB ACS 800 Series VSD combined with the ABB AC500 PLC.

The AC500, AC500-eCo, AC500-S and AC500-XC scalable PLC ranges provide solutions for small, middle and high-end applications. ABBs AC500 platform offers different performance levels and is the ideal choice for high availability, extreme environments or safety solutions.

The ABB ACS800 single drives are available both as complete AC drives and as modules. They have Direct torque control (DTC) as standard, support a wide range of fieldbus protocols and have flexible I/O and encoder options. In addition they are specifically designed for industrial applications in process industries such as the pulp & paper, metals, mining, cement, power, chemical, and oil & gas which made it the perfect solution for us.

John Roselt is excited at the prospect of introducing green solutions in the manufacturing industry, “there are multiple compressors within a company and multiple companies around the country that can benefit from this solution. It’s an obvious decision, who wouldn’t want to save on their energy bill?”

This project will result in large cost and energy savings for the manufacturing company.

Paul Young said “It was a pleasure working with John Roselt and his skilled team. We look forward to future projects together where we can put our system integration expertise in action to implement energy saving solutions across other manufacturing companies.”

Get a quote

Are you looking to buy ABB PLCs and VSDs or need system integration expertise? TALK TO US. PSY INTL distributes a full range of ABB Low and Medium Voltage products.

Fill in this contact form below with a few product requirements or project details and we will get back to you.

Or call  +27(0)11 782 5449 or email

View images taken during the commissioning and FAT test stages


About info@ psy

PSY SYSTEMS is based in Johannesburg RSA and offers its services internationally. We specialize in Electronic Modules and we offer consultation, project management, project design, development, commissioning and installation of electronic components and control systems for specialized infinite applications.