Bosch Security Systems | 2006-06 | 9922 141 10377 en
Plena Voice Alarm System | Installation and User Instructions | IEC60849 en | 106
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 card.
j The language(s) used shall be specified by the
purchaser.
Responsibility of the installer.
table 1: IEC60849 - 4.1 Principal features
Requirement Compliance Signature
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