System Overview of the Freelance DCS
The Freelance DCS provides both, operator level and process level. The operator or HMI level contains the functions for operation, process monitoring, archives and logs, trends and alarms. Open-loop and closed-loop control functions are processed in the controllers, which communicate with actors and sensors in the field.
Freelance operator level
(DigiVis) provides HMI functionality and runs on a simple PC-environment under Microsoft Windows. It supports dual-monitor operation to stay continuously tuned with essential information like the alarm list, while inspecting at the same time for example the progress of a sequential function chart, trend archives, or the system display with extended diagnostics.
The Freelance engineering station is used to configure and commission the system including the operator interface. Usually, portable equipment such as laptops, which allow configuration both in the office and on site, can be used.
The Freelance process level
A Freelance system can consist of between one and several AC 700F, AC 800F or AC 900F controllers and can be extended with different types of I/O units. You have the option of configuring your system either standard or fully redundant. The connection to the Freelance control network is achieved via Ethernet.