AS 4428.6:2018 pdf free

AS 4428.6:2018 pdf free.Fire detection, warning, control and intercom systems – Control and indicating equipment
Design documentation shall be prepared. This documentation shall include drawings, parts lists, block diagrams, circuit diagrams and a functional description to such an extent that conformance with this Standard may be checked, and that a general assessment of the mechanical and electrical design is made possible.
The cabinet of the ASE shall be of robust construction, consistent with the method of installation recommended in the documentation. At Access Level 1, it shall meet at least classification IP30 of IEC 60529.
The ASE may be housed in more than one cabinet. If the documentation shows that the cabinets may be installed in locations distributed within the protected premises, then all of the mandatory manual controls and indicators shall be in one cabinet， or in cabinets declared to be suitable only for mounting adjacent to each other.
All executable code and data necessary to comply with this Standard shall be held in memory that is capable of continuous, unmaintained, reliable operation for a period of at least 10 years.
The program shall be held in non-volatile memory, which shall only be written to at Access Level 4. Each memory device shall be identifiable such that its contents can be uniquely cross-referenced to the software documentation.
For site-specific data, the following requirements apply:
(a) Alteration of site-specific data shall be possible only at Access Level 3.
(b) Alteration of site-specific data shall not affect the structure of the program.
(c) If stored in volatile memory, the site-specific data shall be protected against power loss by a back-up energy source which can only be separated from the memory at Access Level 4, and which is capable of maintaining the memory contents for at least two weeks.
(d) If stored in read-write memory, there shall be a mechanism which prevents the memory being written to during normal operation at Access Level 1 and Access Level 2, such that its contents are protected during a failure in program execution.
(e) Site-specific data shall be given a version reference, which shall be updated when each set of alterations is carried out.
(f) It shall be possible to identify the version reference of the site-specific data at Access Level 3.
NOTE: See Appendix B for guidance on the design requirements for software-controlled ASE.AS 4428.6 pdf free download.