Bosch Praesideo 4.0 - Инструкция (Страница 51)

Praesideo 4.0 en | 61
Bosch Security Systems B.V. IUI-PRAESIDEO_4.0 | V1.0 | 2013.01 Installation and User Instructions
b an indication at least common to any earth fault of
less than 50 k Ω is capable of affecting a mandatory
function, and which is not otherwise indicated as a
fault of a supervised function;
All 100V lines of the Praesideo system can be
supervised individually for earth faults (i.e. connections
to earth with a leakage resistance of less than 50 k).
c an indication of the rupture of any fuse within the
VACIE, or the operation of any protective device
within the VACIE which is capable of affecting a
mandatory function in the fire alarm condition;
Every rupture of a fuse or the operation of a protected
device that affects a mandatory function will result in a
fault since the mandatory functions are supervised. The
reported fault is as close to the located defect as
possible. E.g. a mains related fault is reported as a
mains fault and an amplifier defect is reported as defect
for that amplifier channel.
d 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.
All network based transmission paths of the Praesideo
system are supervised using a keep-alive mechanism.
The CobraNet transmission path of the Praesideo
system is supervised by means of clock availability.
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 Praesideo system can be
supervised for shorts and interruptions.
Analog audio connections to external parties can be
supervised by pilot tone supervision.
The analog fail safe bypass input of the Praesideo multi
channel interface can be supervised by pilot tone
supervision.
These indications may be suppressed during the fire
alarm condition.
Praesideo fault indicators are not suppressed. There are
separate indicators for fault and voice alarm conditions.
The only exception is that the automatic indication of the
voice alarm condition has precedence over the
automatic indication of the number of present faults on
the display of the network controller.
8.2.4 The following faults shall be indicated at least by
means of the general fault warning indicator:
a
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;
All network based transmission paths of the Praesideo
system are supervised using a keep-alive mechanism.
The CobraNet transmission path of the Praesideo
system is supervised by means of clock availability.
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 Praesideo system can be
supervised for shorts and interruptions.
Analog audio connections to external parties can be
supervised by pilot tone supervision.
The analog fail safe bypass input of the Praesideo multi
channel interface can be supervised by pilot tone
supervision.
b any short-circuit or interruption in the voice alarm
transmission path to the emergency microphone
capsule, if provided;
The capsule of the Praesideo (emergency) call station
microphone can be supervised for both short-circuit and
interruption. This is configurable. Also the microphone
inputs on the power amplifiers supervise the connected
microphone.
c 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.
The loudspeaker lines of the Praesideo system can be
supervised using a master-slave communication system
that uses the actual loudspeaker wiring for polling. The
communication is inaudible and not affected by audio
signals present.
Praesideo offers two options: single loudspeaker line
supervision (master-slave) and multiple loudspeaker line
supervision (master-multiple slaves) that detect short-
circuits and interruption of the loudspeaker lines.
The installer shall only use the 100 V outputs of the
Praesideo amplifiers.
Clause / Requirement Compliance Signature