4 CONNNECTION AND SETUP
4.1 EMERGENCY SUPPLY SYSTEM
The equipment requires an external emergency power supply to work as an EN 54 voice
evacuation system. This power supply system must manage the battery charge and monitor
the status of the external batteries that will provide the required power in case of loss of
normal power supply. The requirements of the emergency power supply can be found in
chapter 7 . The connection diagram of emergency power supply in shown in picture 41.
The emergency supply system must be able to provide emergency power supply to the
system for at least 30 minutes in operation and at least 24 hours in standby mode following
suggestion of EN54-14 standard.
Select certified batteries, follow the set up instructions and maintenance instructions
specified by the manufacturer of the battery charger.
NOTE: Supervision's Interface can be different depending on the manufacturer. Please
pay attention to the meaning 'N.O' and 'N.C' of the manufacturer. LDA's equipment shows
'N.O.' referring to a normally open circuit (without failure).
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