Model IFP-2100/ECS Installation Manual
LS10143-001SK-E
10-17
Release Alarm” outputs will activate. (Also refer to Table 10-4).
10.7.2
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 Interlock Release Alert Output Activation
If any single addressable detector is activated, the “Interlock Release Alert” output will activate. This alerts the
user that the initial stages required for a release condition are present. (Also refer to Table 10-5).
Conditions Required for a Detector Alarm Output Activation
If two addressable detectors, a manual release switch is activated, or an interlock switch is active, the “Interlock
Release Alert”, and “Detector Alarm” outputs will activate.
Conditions Required for a Interlock Release Alarm 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 “Interlock Release Alarm” and “Detector Alarm”
outputs will activate, and the “Interlock Release Alert” outputs will deactivate.
Table 10-4: Single Interlock Zone Operation
Inputs
Output Results
1st Addressable Detector
X
X
X
X
2nd Addressable Detector
X
X
X
X
Manual Release Station
X
X
X
X
Norm
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te
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te
rloc
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le
a
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e
Ale
rt
In
ter
loc
k R
e
le
as
e
A
lar
m
and Detec
tor
Alarm
In
ter
loc
k R
e
le
as
e
A
lar
m
and Detec
tor
Alarm
In
ter
loc
k R
e
le
as
e
A
lar
m
and Detec
tor
Alarm
In
ter
loc
k R
e
le
as
e
A
lar
m
and Detec
tor
Alarm
In
ter
loc
k R
e
le
as
e
A
lar
m
and Detec
tor
Alarm
Important!
Only addressable detectors can be used. No conventional detectors can be used.
Each Double Interlock Zone input requires at least one Interlock/pressure switch and at least one manual release switch.
Table 10-5 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
Summary of Contents for IFP-2100
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