1.1 Functionality
The wizards offers the following range of functions:
· The calculation of the intrinsic safety of all functions present in the project is performed on the basis of the associated article master data and the data of the project considering up to 5 measuring circuits.
· For each of the calculations, a calculation sheet, i.e. a document in the form of a report, is created in which the result of the calculation and the given source data are listed.
· The characteristic values of the active and passive devices and the cable lengths are considered during the calculation of the functions.
· The EC-type Examination Certificate in the form of the ATEX certificate number is provided for all relevant tag elements of the function.
· If the conditions for the intrinsic safety of a function are not met the user directly gets a message. These messages are listed in the Engineering Base project and have to be processed by the user. A report with the message that the intrinsic safety is not fulfilled is created.
The following boundary conditions have to be met for the use of the wizard:
· The created reports are not actively linked to the objects in the project. If the data of the objects is changed, new calculations have to be performed and therefore new reports have to be created.
· Technical data of the devices and functions cannot be modified via the wizard in the project. Changes in the master data have to be performed via the assistant Update From Catalog Wizard also in the projects.
· The basic electrical and logically correct layout of the measuring and control circuits is not checked by the wizard.
· The documentation created by the wizard is a collection and preparation of information present in the project. The calculations of the wizard are not certified. Without the check performed by the user, the documentations of the intrinsic safety do not have a proof character.
· The wizard does not recognize if device parameters have been changed after the calculation. The user has to start the calculation process anew.