Section 9 emergency voice system operation, 1 overview, 2 loc functionality – SilentKnight 5820XL User Manual
Page 165: 1 keys and leds, 1 evs control key, Overview, Loc functionality

Model 5820XL / 5820XL-EVS Installation Manual
LS10061-001SK-E
9-1
Section 9
Emergency Voice System Operation
9.1
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. These features are enabled
through a programming option in the fire alarm control panel. EVS (Emergency Voice System) is integrated with
the fire alarm and voice evacuation functions of the control panel.
Note: EVS installations are not FM approved.
To start this process, the user gains EVS control. This tells the system that a user is going to be making changes
to the EVS; either by activating an EVS event, doing an EVS live page, or resetting EVS. Only one EVS device/
user can have EVS control at any given time and there are rules that will be explained that govern when a device/
user is able to gain control or pass control. Interface keypads are associated with the EVS-VCM or EVS-RVM
that are installed together, will provide feedback as to the system’s current state or why a user’s request for
changing the EVS might have been denied.
There are two ways for activating EVS in the 5820XL-EVS 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 microphone. These selections are not pre-determined and allow the user to make system
functionality decisions when the event is actually happening. This requires the activation of Manual EVS State
which bypasses EVS Point Activations. See section 9.2.3.
9.2
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-RCU Remote Command Unit (EVS-RVM Remote Voice Module and its associated 5860
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.
9.2.1
Keys and LEDs
This section outlines the functionality of the keys and LEDs on the EVS-VCM and EVS-RVM expander
modules.
9.2.1.1
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 EVSEVS Control if the user
doesn't have it already).
2.
Relinquish EVS Control if pressed while in Message Mode.