Recognized Architecture
Safeguard 400 Series controllers comply with the design standard 1oo2D, one of the designated architectures for safety systems defined be IEC 61508, the international standard for functional safety in electronic safety systems. One of the benefits of this architecture is the detection and identification of potential failures by means of active selftesting. Safeguard 400 Series controllers satisfy SIL 3.
Everything is Prepared
Predefined functions are available at all levels – signal description, function blocks, operator functions and communication. Carefully selected default values are provided for all process signals to be connected. All parameters are carefully chosen standard function, thereby changing only the parameters needed to be changed (for example tagname, alarm limits, etc). The operator station involved is connected the moment the signal is defined. It only requires confirmation be entering a simple command and the signal name.
Some examples of predefined operator functions are event and alarm handling, bypass management, signal object displays, system diagnostic and query-based reporting.
High Functional Level
The application program is created by interconnecting the functions needed in a functional, high-level, language that provides function blocks for both logic and analog control. The functional-block library also contains the elements required for voting and cause & effect programming.
Program Quality
Simple, efficient, consistent and understandable programs save time and money during development, maintenance and redesign. Good program quality flows from division of the entire application program into suitable functional blocks and subprograms.