Event Priority; 1: System Control; 2: System Override - Honeywell 6820 Manual

Event Priority

Ethernet Info
Press 5 from the System Information menu for Ethernet Information.
AlarmNet Info
Press 6 from the System Information menu for AlarmNet Info.
• Cell Strength: 0 to 100%
• Status: Registered/Not Registered
AlarmNet Temporary PIN
Press 7 from the System Information menu to enter an AlarmNet Temporary PIN. This is issued by AlarmNet to register a new panel in case
the existing FACP is ever replaced.
9.4 Event Priority
This section describes how the event activations are handled by the control panel with regards to priority.
9.4.1 System Control
The 820EVS control panel integrates both a fire and emergency system into one. When events are active from both systems the control panel
makes intelligent decisions to determine which system should be controlling outputs. This is called System Control. This manual will refer to
the fire or emergency systems having System Control, this means that the system has an active alarm or supervisory event that has a higher
event priority than an active alarm or supervisory event from the other system. For this consideration, the control panel looks at the highest
priority event active on each system. When both systems are active, the system with control will activate System Override. System Override
is activated on the lower priority, non-System Control panel system (fire or emergency system.)
9.4.2 System Override
System Override temporarily disengages output group activations from the system being overridden. This is done to not provide conflicting
messages and signaling and help with reducing confusion of the building occupants.
When output groups are supposed to be active but are not because System Control has activated System Override, they are re-activated every
30 seconds for 2-3 seconds to indicate to the building occupants that there is still an event active. This will only occur when the system with
System Control is not using the output group. The System Override option is programmable for non-voice output groups on a per output
group basis through the panel output group programming menus and in HFSS. In these places the option is called Allow System Override
and defaults to YES. It is also possible to not reactivate the output groups every 30 seconds when System Override is active on a per system
basis. This option is programmable in HFSS.
There are times when you would not want to allow System Override for an output group. For example: fire is programmed to an elevator
relay to bring the elevator to the bottom floor for fire only. If fire and EVS are active with EVS being the higher priority event, you still need
the elevator to move to the bottom floor and only audible and visual notification appliances must be overridden. In this case, the output group
assigned to the relay would be set to NO on the Allow System Override setting. See Section 8.4.1 to edit group properties.
9.4.3 Event Priority
Each event type (see Table 9.3) has a priority level assigned to it. When more than one event type is active, the panel uses the Event Priority
Table to determine which event mapping to use to control output groups. The Event Priority Table can be modified using HFSS. It is strongly
recommended that before each installation a risk analysis is done by the stake holders (property owners, AHJ, occupants, etc...) to determine
which events take precedence over others.
The Emergency LOC Alarm entry in the Event Priority Table encompasses all EVS Alarm Events that can be activated from an LOC (LOC
Mic Triggered EVS Alarm and LOC EVS 1 Alarm through LOC EVS 8 Alarm). By default, these events do not have a priority - they can be
activated in any order. A programming option in HFSS exists to force a priority scheme for the LOC EVS Alarm Events. When this option is
enabled, the lower numbered the EVS event is, the higher priority it has (e.g. LOC EVS 1 Alarm is higher priority than LOC EVS 8 Alarm).
With this priority scheme, once a higher priority EVS Event has been activated, an EVS reset must be performed before a lower priority EVS
Event can be activated.
The Event Priority Table contains the following events for modification.
6820/EVS Manual — P/N LS10144-001SK-E:E 4/6/2022
<Ethernet Info>
MAC:00D0.2D73.489C
IP:000.000.000.000
DHCP: Y Next
Fire System
Fire Manual Pull Alarm
Fire Detector Alarm
Fire Water Flow Alarm
Fire Interlock Release Alarm
Fire Zone Aux 1 Alarm
Fire Zone Aux 2 Alarm
<Ethernet Info>
Sub: 000.000.000.000
GW: 000.000.000.000
Back MAC CRC:0000
Emergency System
Emergency LOC Alarm
Emergency 1 Point Alarm
Emergency 2 Point Alarm
Emergency 3 Point Alarm
Emergency 4 Point Alarm
Emergency 5 Point Alarm
Table 9.3 Event Priority
System Operation
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