Rockwell Automation Publication ICSTT-RM446N-EN-P - April 2018
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AADvance Functional Safety System Implementation
Chapter 4
• Logic sequences or devices intended to cause a safety shutdown, once
initiated, shall require operator action prior to resuming operation of
the effected heating system plant.
• Any changes to hardware or software shall be documented, approved,
and maintained in a file on the site.
• Application software shall be labelled in order to make the identification
and functions readily identifiable. A list of all applications and
associated documentation should be available to end users.
• System operation shall be tested and verified for compliance with the
NFPA 87 standard and the original design criteria whenever the
AADvance controller is replaced, repaired, or updated.
• Whenever application software that contains safety logic or detection
logic is modified, system operation shall be verified for compliance with
the NFPA 87 standard and the original design criteria.
• The NFPA 87 certification is only applicable where the system is applied
in accordance with this safety manual and NFPA 87 requirements.
EN 50156
EN 50156-1:2004 applies to the application design and installation of
electrical equipment, control circuits and protective systems for furnaces which
are operated with solid, liquid or gaseous fuels and their ancillary equipment. It
specifies requirements to meet operating conditions for furnaces, to reduce the
hazards of combustion and to protect the heated systems from damage. The
AADvance controller is certified for use an EN 50156 compliant systems.
In particular the AADvance controller controls protective devices for:
• monitoring of flames and other safety conditions of the firing
• interrupting the flow of the fuel to the furnace for safety reasons
• ventilating the body of the furnace and the flue gas ducts
• monitoring of safety condition of the heated systems (e.g. water level
limiter in steam boilers)
The EN 50156 certification is only applicable where the system is applied in
accordance with this safety manual and EN 50156 requirements.
