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Bosch Security Systems | 2011-02
Praesideo 3.5 | Installation and User Instructions | EN54-16: 2008 en | 35
Clause / Requirement Compliance Signature
8 Fault warning condition
8.1 Reception and processing of fault signals Praesideo is compliant.
8.1.1 The VACIE shall enter the fault warning condition
when signals are received which, after any necessary
processing, are interpreted as a fault.
When the Praesideo system receives a supervision fault
signal (i.e. detects a fault in the system), the fault warning
condition is entered until this state is explicitly reset.
8.1.2 The VACIE shall be capable of simultaneously
recognizing all of the faults specified in 8.2 and, if provided,
in 8.3 unless this is prevented by:
• the presence of an alarm output signal on the same
voice alarm zone, and/or
All Praesideo system faults are handled (acknowledged
and reset) individually. Also, the Praesideo system is
capable of recognizing all of its system faults
simultaneously. The Praesideo system is able to recognize
faults in a voice alarm zone even when there is an alarm
output signal on the zone.
• the disablement of the corresponding voice alarm zone
or function, and/or
Optional disablement of voice alarm zones or functions is
not implemented in Praesideo.
8.1.3 The VACIE shall enter the fault warning condition
within 100 s of the occurrence of any fault, or the reception
of a fault signal or within another time as specified in this
European Standard or in other parts of EN 54.
The Praesideo system recognizes and reports all faults
within 100 seconds.
8.2 Indication of faults in specified functions Praesideo is compliant.
8.2.1 The presence of faults in specified functions shall be
indicated on the VACIE without prior manual intervention.
The fault warning condition is established when the
following are present:
a a visible indication by means of a separate light emitting
indicator (the general fault warning indicator);
The Praesideo system provides a visible indication when it
is in the fault warning condition via the fault LED of the call
stations, output contacts, key indicators of call station keys,
the fixed fault output contact of the network controller and
the front panel menu of the network controller.
The installer must mount a yellow (flash) light to indicate the
fault warning condition, clearly visible from the front side of
the rack, behind the glass door of the rack.
b a visible indication for each recognised fault as
specified in 8.2.3, 8.2.4, 8.3 (if provided), 8.4 (if
provided) and 8.5 and
The Praesideo system offers two ways of visual indication
of individual faults: via the front panel menu of the network
controller and via the Praesideo logging application.
c an audible indication, as specified in 8.6. The Praesideo system provides an audible fault indication
when it is in the fault warning condition via output contacts
and the fixed audible fault output contact of the network
controller.
8.2.2 If the indication is on an alphanumeric display, which
cannot simultaneously indicate all of the faults because of
its limited capacity, at least the following shall apply:
a the presence of fault indications which have been
suppressed shall be indicated;
The network controller alphanumeric display is used to
indicate the fault warning condition and all individual faults.
The normal display information of the network controller is
automatically overruled when there are faults present, i.e.
when the system enters the fault warning state. The display
of the network controller indicates the number of faults
present.
b suppressed fault indications shall be capable of being
displayed by means of a manual operation at access
level 1 or 2 which interrogates only fault indications.
The individual faults are presented in the ‘Faults’ menu of
the front panel menu of the network controller. Manual
operation is needed to display and navigate through the
individual faults. Each individual fault is shown in a
submenu of the ‘Faults’ menu.
8.2.3 The following faults shall be indicated by means of
separate light emitting indicators and/or an alphanumeric
display:
Faults of the supervised items are detected and reported
through the general fault warning indication. Additionally all
faults are reported individually as well and can be inspected
using the network controller front panel menu and the
logging application.
a an indication at least common to any power supply fault
resulting from:
The mains and backup power of all Praesideo system
elements are supervised individually.
1 a short circuit or an interruption in a transmission
path to a power supply (item L of Figure 1 of
EN 54-1), where the power supply is contained in a
different cabinet from that of the VACIE, and
2 the power supply faults as specified in
EN 54-4;