Bosch Plena Voice Alarm System Installation And Operation Manual page 129

Plena Voice Alarm System
Clause / Requirement
d
8.2.5 The following faults shall be indicated at
least by means of the general fault warning
indicator:
a
b
c
d
e
Bosch Security Systems B.V.
an indication of any short circuit or
interruption, at least common to all
transmission paths between parts of the
VACIE contained in more than one cabinet,
which is capable of affecting a mandatory
function and which is not otherwise
indicated as a fault of a supervised function.
These indications may be suppressed during
the fire alarm condition.
any short-circuit or interruption in a voice
alarm transmission path between parts of
the VACIE contained in more than one
cabinet even where the fault does not affect
a mandatory function;
any short-circuit or interruption in the voice
alarm transmission path to the emergency
microphone capsule, if provided;
any short-circuit or interruption in the voice
alarm transmission path between the VACIE
and loudspeakers even where the fault does
not affect the operation of loudspeakers.
any short-circuit or interruption in the
transmission path between the VACIE and
fire alarm devices when used (see 7.8).
failure of any power amplifier.
Installation and Operation manual
Compliance
All transmission paths of the Plena Voice
Alarm System are supervised.
All control input contacts of the Plena
Voice Alarm System can be supervised
for shorts and interruptions.
Analog audio connections to external
parties can be supervised by pilot tone
supervision.
Plena Voice Alarm System fault indicators
are not suppressed. There are separate
indicators for fault and voice alarm
conditions. The only exception is the
audible indicator.
All transmission paths of the Plena Voice
Alarm System are supervised.
When the Praesideo system is used in a
redundant loop configuration, the loss of
the redundant path is reported.
All control input contacts of the Plena
Voice Alarm System can be supervised
for shorts and interruptions.
Analog audio connections to external
parties can be supervised by pilot tone
supervision.
The capsule of the Plena Voice Alarm
System emergency microphone can be
supervised for both short-circuit and
interruption. This is configurable.
The loudspeaker lines of the Plena Voice
Alarm System system can be supervised.
The Plena Voice Alarm System does not
offer this functionality directly: control
inputs are supervised, but control
outputs are voltage free relay contacts. It
is the responsibility of the installer to
create a feedback signal (corresponding
to the transmission path status between
the Plena Voice Alarm System and the
fire alarm device) to a supervised input
contact of the Plena Voice Alarm System.
All Plena Voice Alarm System power
amplifiers are supervised for overload,
overheating, short-circuit, ground short
and amplifier defect.
9922 141 1037x (V2.16) | V0.6 | 2011.09
| en 129
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