This article lists the requirements for logi.CAD 3 when developing safety-relevant applications:
Requirements for the development process
Warning 1
A defined development process is required for the development and the commissioning of safety-relevant applications.
The development process must deal with the requirements of the appropriate underlying standard, in particular with the required validation and verification measures.
Properly trained personnel
Warning 2
logi.CAD 3 must be used by properly trained personnel only.
Properly trained personnel are qualified persons with all the following characteristics and skills:
persons planning, developing, assembling and/or commissioning safety-relevant applications
persons that given their knowledge, experience, qualifications and/or training are authorized to use logi.CAD 3 (as described in the documentation "Safety instructions on working with the IDE
"
and are able to detect and prevent possible risks
persons
familiar with the
relevant safety concepts for automation engineering
persons familiar with the underlying standards and regulations
persons familiar with the instructions of the manufacturer manual for the safety system
persons familiar with the instructions of this document – Hence, s
ufficient language skills are required to understand all instructions given in this document.
Warning 3
Organisational measures must be taken to ensure that only a qualified person can access the safety-relevant applications and the safety →PLC.
Those measures can include:
Warning 4
Persons using logi.CAD 3 must have appropriate knowledge, experience and qualifications relevant for the tasks they are performing. These tasks are in particular: creating/editing the safety-relevant application, verifying and validating the safety-relevant application, releasing the safety-relevant application for operation.
The person performing the task(s) must be a qualified person that has appropriate knowledge, experience and qualifications with the following aspects:
safety engineering
safety concepts in automation engineering
accident detection and prevention
extent of the consequences in the event of a failure
possibly existing company guidelines
the references and standards
the manual of the safety system
the safety manuals or the appropriate documentation on performing the safety-relevant tasks
This is: this documentation "Safety instructions on working with the IDE" (in particular, its specific instructions) as well as the documentation "
logi.µSRTS
safety manual" (and its specific instructions)
When one person is performing different tasks in accordance to the references/standards or company guidelines, the degree of independence must be observed.
Warning 5
logi.CAD 3
does only provide basic authentication/authorization support. The operator of the safety PLC must ensure, that the safety system as well as the working places where the
safety-relevant
applications are created and/or modified, are protected against
unauthorized access
.
Those measures can include restricting the access to the PLC (for example private network, VPN).