2.4.2 EMERGENCY ACTIVATION INTERFACE
The emergency activation interface is indicated to perform an interconnection with a fire
control and indication equipment (CIE). All input connections are supervised in order to detect
fault in the transmission line. This interface has three sections:
(a) GENERAL EMERGENCY MODE ACTIVATION INPUT
It allows activation and deactivation of the emergency mode of the entire system. It
consists of two supervised inputs for the connection of voltage-free contact closures: Reset
and Emergency. In order to have the link monitored, the contact closure connections to the
equipment shall be done by two 10k external electrical resistances (supplied with the unit),
placed at the output of the CIE as shown in the Picture 9.
When the emergency input (EMG) is on, the machine will automatically switch from PA
mode, to a state of emergency, and it will broadcast the voice evacuation message at all zones
of the system (default option). The default evacuation sequence can be con figured through the
con figuration software. When the reset input (RST) is enabled, the
system will exit the emergency mode and return to the normal state.
If an error occurs in the transmission line between the CIE and the
equipment, it will produce a fault indication in the front panel. (see
2.1.3). In systems in which these inputs are not used, connection
monitoring must be disabled in the con figuration software.
NOTE: For avoiding an unwanted activation, the system does
not allow that the activation inputs perform the sequence EMG, RST, EMG instantly. The
second consecutive activation will leave a time lapse of 5 seconds.
The connection is via a 4-pin female euroblock connector of 3.81 mm pitch (supplied
with the unit). The wire size range for each pole of this connector is: 0.14
1.5 mm2 (30
14
AWG).
Marking Description
Type
Signals Activation
RST
Input for Reset of the Emegency
State
Input
┴
+
Voltage-free contact closure
between
┴
+
Supervised input
(see Picture 9)
EMG
Emergency State activation input
Input
┴
+
Voltage-free contact closure
between
┴
+
Supervised input
(see Picture 9)
Table 2: General Emergency Inputs
LDA Audio Tech - Severo Ochoa Nº 31- 29590 MÁLAGA, ESPAÑA. Tlf: +34 952028805
9
Picture 8: Emergency Activation Interface
Picture 9: Supervised connection with the CIE
Picture 10: General
Emergency
Activation Input
User's Manual: EN 54-16 PA/VA System LDA NEO