SilentKnight 5820XL - Manual (Page 163)

Model 5820XL / 5820XL-EVS Installation Manual LS10061-001SK-E
8-17
8.7.2 Double Interlock Zone Releasing
A Double Interlock Zone uses a minimum of two addressable detectors, a designated manual release switch, and
an interlock switch input. An interlock switch is typically a dry-contact pressure switch and will be referred to as
an interlock/pressure switch in this document.
Conditions Required for a Pre-Alarm Output Activation
If any single addressable detector is activated, the “Pre-Alarm” output will activate. This alerts the user that the
initial stages required for a release condition are present. (Also refer to Table 8-3.)
Conditions Required for a General Alarm Output Activation
If two addressable detectors, a manual release switch is activated, or an interlock switch is active, the “Pre-
Alarm”, and “General Alarm” outputs will activate.
Conditions Required for a Release Output Activation
Any release requires the activation of an interlock switch, and either a manual release switch or 2 activated
addressable detectors. When these conditions are met, the “Release” and “General Alarm” outputs will activate,
and the “Pre-Alarm” output will deactivate.
Important!
Only addressable detectors can be used. No conventional detectors can be used.
Each Single Interlock Zone input requires at least one manual release switch.
Each Double Interlock Zone input requires at least one Interlock/pressure switch
Table 8-4: Double Interlock Zone Operation
Inputs Output Results
1st Addressable
Detector
x x x x x x x x
2nd Addressable
Detector
x x x x x x x x
Manual Release
Station
x x x x x x x x
Interlock/Pressure
Switch
x x x x x x x x
Normal
Pre-Alar
m
Pre-Alar
m
Pre-
Al
arm a
n
d G
e
ne
ra
l Ala
rm
Pre-
Al
arm a
n
d G
e
ne
ra
l Ala
rm
Pre-
Al
arm a
n
d G
e
ne
ra
l Ala
rm
Pre-
Al
arm a
n
d G
e
ne
ra
l Ala
rm
Pre-
Al
arm a
n
d G
e
ne
ra
l Ala
rm
Pre-
Al
arm a
n
d G
e
ne
ra
l Ala
rm
Pre-
Al
arm a
n
d G
e
ne
ra
l Ala
rm
Pre-
Al
arm a
n
d G
e
ne
ra
l Ala
rm
Relea
se an
d Ge
ner
a
l
Alar
m
Relea
se an
d Ge
ner
a
l
Alar
m
Relea
se an
d Ge
ner
a
l
Alar
m
Relea
se an
d Ge
ner
a
l
Alar
m
Relea
se an
d Ge
ner
a
l
Alar
m