Bosch Appliances 3.5 manual Clause / Requirement

Praesideo 3.5 Installation and User Instructions EN54-16: 2008

en 48

Clause / Requirement

13.5.3A single short circuit or an interruption in any voice alarm transmission path between distributed cabinets of a VACIE shall not prevent the activation of a voice alarm output condition to more than one voice alarm zone for longer than 100 s following the occurrence of the fault.

13.5.4If the VACIE is designed to be used with a power supply (item L of Figure 1 of EN 54-1) contained in a separate cabinet, then an interface shall be provided for at least two voice alarm transmission paths to the power supply, such that a short circuit or an interruption in one does not affect the other.

Compliance Signature

The voice alarm transmission path between distributed cabinets of the Praesideo system is achieved by means of the system bus.

A single interruption or short circuit in any data segment of this system bus does not prevent proper functioning of the system (including activation of a voice alarm output condition to more than one voice alarm one) as long as the system has redundant cabling.

The system bus also offers a power circuit. This power circuit is used to provide power to system elements that do not have its own main power supply. These elements are: audio expander, CobraNet interface, multi channel interface, call station basic with call station keypads, call station kit with call station keypad kits, call station interface, remote call station with call station keypads, remote call station kit with call station keypad kits. A single interruption or short circuit in the power circuit of the system bus can affect these system elements, since they will lose their power and therefore be turned off. However this can be fixed by proper installation and configuration for the following elements:

•multi-channel interface - this unit can be configured to use a connected basic amplifier as its power source (default setting) to share the main and backup power supply of the basic amplifier.

•call station kit - a backup power supply can be connected in order to power the call station externally if the network power supply fails.

•call station interface - a backup power supply can be connected in order to power the call station interface externally if the network supply fails; this back-up power supply can then power both the call station interface and the connected remote call station.

•remote call station - an external power supply can be connected in order to power the call station externally if the network power supply fails.

•remote call station kit - a backup power supply can be connected in order to power the call station externally if the network power supply fails.

The basic call station does not have a backup power supply and should therefore not be used as voice evacuation call station. The installer must take care of proper installation and configuration of the system.

The audio expander and CobraNet interface units will not prevent the activation of a voice alarm output condition to more than one voice alarm zone as long as they do not interrupt the system bus when the network power supply fails. This can be achieved in two ways: either by installing them on tap-off points in the network using a network splitter or by ensuring all of these units are placed together on the ring with no other type of units in between them. This way they can never break the redundant ring. The installer must deplory one of these solutions in the system installation.

If a 19”-cabinet (rack) or adjacent cabinets provide enough space for the battery and/or charger, the installer can install the complete PSE (power supply equipment) as referred in EN54-4 in one cabinet. In that case this requirement is not applicable.

In case the installer installs the backup part of the PSE (battery and charger) in a separate cabinet, Praesideo provides a separate (monitored) DC-backup connection on the Praesideo units. This implies that a Praesideo installation will always have two separate voice alarm transmission paths to the power supply: one for mains and one for DC backup. Both will not influence each other.

The installer must take care that the installation complies with this requirement.

Bosch Security Systems 2011-02