Plena Voice Alarm System | en 103
Bosch Security Systems B.V. Installation and Operation manual 9922 141 1037x (V2.16) | V0.6 | 2011.09
e The system shall be able to broadcast
attention-drawing signals and speech
messages to one or more areas
simultaneously. There shall be at least one
appropriate attention-drawing signal
alternating with one or more speech
messages for this purpose.
Compliant, if attention-drawing signal is
part of the configuration. Responsibility
of the installer
.
Note: It is recommended that an
attention drawing signal is assigned to
the EMG button.
f At any time the system operator shall be able
to receive, by means of a monitoring system,
indications of the correct functioning or
otherwise of the relevant parts of the
emergency system (see also 5.2 and 5.3).
Compliant.
g Failure of a single amplifier or loudspeaker
circuit shall not result in total loss of
coverage in the loudspeaker zone served.
NOTE 1 - The monitoring system specified
in 4.1f) should indicate the failure of an
amplifier or of a loudspeaker circuit.
NOTE 2 - Particularly in small buildings, it
may not be necessary to install two separate
loudspeaker circuits in one loudspeaker
zone. A decision on this matter may be
subject to local regulations.
Compliant if installed with:
– Spare Power Amplifiers.
– Multiple loudspeaker circuits per
zone or multiple zones. A-B wiring.
– Appropriate supervision on.
Responsibility of the installer.
h An attention-drawing signal shall precede the
first message for 4 s to 10 s. Successive
signals and messages shall then continue
until either changed in accordance with the
evacuation procedure, or manually silenced.
The interval between successive messages
shall not exceed 30 s and attention-drawing
signals shall be broadcast whenever periods
of silence might otherwise exceed 10 s.
Where more than one attention-drawing
signal is used, such as those used for
different types of emergency, each signal
shall be clearly distinguishable in character.
Compliant, if attention-drawing signal is
part of the pre- recorded message and
the configuration has been setup to
include this signal. Responsibility of the
installer.
Note: if you deviate from this, the system
is no longer a certified system.
i All messages shall be clear, short,
unambiguous and as far as practicable, pre-
planned.
Responsibility of the installer. Default
configuration is compliant. Various
messages are pre installed as examples.
Where pre-recorded messages are used they
shall be held in a non-volatile form,
preferably in a solid-state store, and be
continuously monitored for availability.
Flash memory is monitored with
checksum.
The system design shall make it inherently
impossible for an external source to corrupt
or derange the store or its contents.
Compliant. Upload of a new configuration
via external PC is password protected.
Other external connections are not
available.
NOTE - On grounds of reliability, it is
preferable not to use storage media
depending on mechanical devices.
Storage medium is flash memory.
Clause / Requirement Compliance Signature
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