Bosch Appliances 3.5 manual en, Bosch Security Systems

Praesideo 3.5 Installation and User Instructions EN60849: 1998

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EN60849 - 5.4 Monitoring of software controlled equipment

Requirement	Compliance	Signature
The correct execution of the system software by any
microprocessor shall be monitored by internal self-
checking procedures and by an appropriate monitoring
circuit (e.g. "watch dog" circuit) complying with the
following:
a The monitoring circuit and its associated indication	Compliant.
and signalling circuits shall not be prevented from
determining and signalling a fault condition by the
failure of any microprocessor or associated clock
circuits.
b The monitoring circuit shall monitor the execution of	Compliant. Indication on Call Station Basic and Call
routines associated with the main program	Station Kit if properly installed.
elements (i.e. it shall not be solely associated with
"waiting" or other "housekeeping" routines).
c In the event of a failure by a microprocessor to	Compliant. Fault are indicated by a control output of the
execute its software correctly, the monitoring circuit	Network Controller, if properly installed. Responsibility
shall (in addition to initiating an audible and visual	of the installer.
fault warning) perform as follows:
1 re-initialize the processor and attempt to restart	Compliant, both data and program are checked for the
the program at a suitable point within 10 s of	Network Controller and the firmware in the units.
the occurrence of the failure. The re-
initialisation procedure shall verify that the
contents of memory, both program and data,
are not corrupted, and
2 either
i record that a failure has occurred (using a	Compliant.
system capable of recording a minimum of
99 failures and re-settable only by an
operation restricted to authorized servicing
personnel) or
ii automatically reset the equipment and give
an audible and visual warning that an
automatic reset has occurred.
EN60849 - 5.5 Interface with emergency detection system
Requirement	Compliance	Signature
The communication link between the emergency	Compliant, if properly installed using supervised control
detection system and the sound system shall be	inputs. Responsibility of the installer.
continuously monitored for faults. This is normally
performed by the control equipment for the emergency
detection system, which gives an audible and visual
indication of a fault in the link between the two systems.
The emergency detection system shall also be capable	Compliant, if properly installed using control outputs.
of receiving information regarding faults in the sound	Responsibility of the installer.
system and shall include a provision, usually at its
control and indicating equipment, for appropriate
audible and visual indication of such faults. As a
minimum, the sound system shall be capable of
transmitting to the emergency detection system one
general "Sound system fault" for any of the fault
conditions listed in 5.3 that may occur within the sound
system.
The link between a fire detection and alarm system and	Compliant, if properly installed. Responsibility of the
the voice alarm system is of crucial importance in	installer. Control input should be in toggle mode.
maintaining the integrity of overall operation. It may be

desirable on larger systems, where distributed control equipment is used, to provide a link at each control equipment location rather than to rely on a central location. Each link shall be monitored. The voice alarm system shall be capable of continuing to broadcast alarm messages, which have been initiated by the fire detection and alarm system, even in the event of a subsequent fault in the interconnecting link between the two systems (i.e. the voice alarm system shall "latch" on receipt of a signal from the fire detection and alarm system). Interruption by higher priority broadcasts shall still be possible.

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