Feature

Control and switching - all from a very compact package

PLC logic, Phoenix Contact’s new programmable logic relay system, is suitable for small automation tasks. It combines the strengths of established relay technology with logic functions in a single package.

04/05/2014 10:21:08

The modular design, featuring plug-in relays, enables flexible assembly, depending on the switching task. Pluggable switching elements ensure high machine and system availability thanks to fast replacement during servicing.

The system consists of logic modules, the PLC-Interface relay system, and the Logic+ software. To start up the system, the logic modules are plugged into eight relay modules.

A compact 50 mm wide logic module can process 16 input/output signals. The base module can be expanded with up to two add-on modules for more complex applications, making it possible to process up to 48 input/output signals.

Programming is done using the highly intuitive Logic+ software that requires no previous experience in this area.

Surge protection in Ex zone applications
Also new from the company is the PT-IQ Ex models from the self-monitoring Plugtrab PT-IQ surge protection system, which are suitable for intrinsically safe applications.

They can be installed directly in Ex zone 2, and the intrinsically safe signal circuits can be routed up to Ex zone 0.

All protection systems consist of a controller and the protection modules themselves. The controller supplies power to up to ten surge protection devices over mounting rail connectors and establishes contact to the multi-stage remote monitoring system. This means significantly less wiring is required than when using conventional installation techniques.

The intelligent monitoring of each voltage-limiting component in a protective circuit allows preliminary damage to be detected and this information to be displayed using a separate yellow status indicator. In this way, pre-damaged surge protectors can be replaced during routine maintenance before they fail.

Written By Sophia Bell

Sophia Bell is the Group Editor of DPA, Connectivity, and PBSI. She joined the team in 2020 as Assistant Editor after achieving a First-Class Honours BA in English Literature and Film Studies from the University of East Anglia. In her current role, she leads the editorial strategy, driving digital growth and ensuring each title continues to deliver trusted, relevant insight for engineering and manufacturing professionals.