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Section 11: Emergency Voice System Operation
11.1 Overview
The EVS series control panels and accessories provide features to meet the requirements for Mass Notification Systems as described in
NFPA 72 and is compliant with the UL 2572 standard. EVS (Emergency Voice System) is integrated with the fire alarm and voice evac-
uation functions of the control panel. n a networked panel system, only one panel can be chosen to be the voice evacuation/EVS panel
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There are two ways for activating EVS in the 6820EVS panel:
EVS Point Activations
EVS Point Activation involves using pre-determined EVS Alarm input points to activate EVS Alarm events. These events cause output
areas to activate based on mapping that is programmed into the system at installation. This is very similar to the traditional mapping that
the fire system has utilized to date.
Manual LOC Activations
Manual LOC Activation involves using the LOC EVS interface to activate EVS Events, choose output areas, and speak through a micro-
phone. These selections are not pre-determined and allow the user to make system functionality decisions when the event is actually hap-
pening. This requires the activation of Manual EVS State which bypasses EVS Point Activations. See section 11.2.3.
11.2 LOC Functionality
An LOC consists of either the EVS Series panel (EVS-VCM Voice Control Module and the Fire Alarm Control Panel), or the EVS-LOC
Remote Command Unit (EVS-RVM Remote Voice Module and its associated 6860 keypad). An LOC is created by adding a VCM or
RVM to the system and associating a keypad to it. The LOC provides eight buttons for activating the EVS messages, a button to gain and
relinquish EVS Control, and a microphone for live EVS paging. There can be up to five LOC devices in the system. In a networked panel
system, all of the LOCs must be connected through SBUS to the panel that includes the VCM.
11.2.1 Keys and LEDs
This section outlines the functionality of the keys and LEDs on the EVS-VCM and EVS-RVM expander modules.
EVS Control Key
Pressing the EVS Control Key will do one of two things:
1.
Enter Message Mode of the LOC EVS interface (including trying to gain EVS Control if the user doesn't have it already).
2.
Relinquish EVS Control if pressed while in Message Mode.
EVS Control LED
The EVS Control LED is used to indicate the status of EVS Control in the system. When the LED is on solid, the LOC has EVS Control
within the system. When the LED is blinking, another LOC has gained EVS Control in the system.
EVS Message Keys
EVS Message Keys are used in Message Mode to select which EVS Message is to be played. If pressed when the LOC does not have
EVS Control, the system will automatically try to gain EVS Control before allowing the EVS Event to be activated. See section 11.2.2.
EVS Message LEDs
The red EVS Message LEDs indicate the active EVS Message and any previously active EVS messages. The green LEDs indicate the
EVS Message was selected in message mode and that the LOC has EVS control.
1.
For EVS Point Activation, the red EVS Message LEDs will illuminate on each LOC to indicate which EVS messages have been
activated in automatic EVS state.
2.
In Manual EVS State, the red EVS Message LEDs will indicate which EVS message has been activated at an LOC. See section
11.2.3.
3.
The green EVS Message LEDs will activate for the LOC that activated the EVS Message.
Select Keys
The Select Keys are used to toggle which output areas are active.
1.
If Message Mode is active (see Section 11.2.3), the Select Keys will toggle which areas the active message is distributed to (also
toggles the red Select Key LED).
NOTE: For LOC activated emergency alarm events, if an area is programmed through mapping to be active that area is automatically selected
and can not be deactivated using the Select Keys.
2.
If Microphone Mode is active (see Section 11.2.3), the Select Keys will toggle which areas the microphone audio is distributed to
(also toggles the green Select Key LED).
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6820 / 6820EVS Manual P/N LS10144-001SK-E:C 09/28/2017
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