Releasing Operations
System Operation
FCP-300/FCP-300ECS Manual —
P/N LS10145-002FK-E:A 3/12/2021
123
Activation
If two or more addressable detectors, or a manual release switch activate, the “Detector Alarm” and “Interlock Release Alarm”
outputs will activate. (Also refer to Table 10.6).
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 “If two or more addressable detectors, or a manual
release switch activate, the “Detector Alarm” and “Interlock Release Alarm” outputs will activate. (Also refer to Table 10.6).”
on page 123“Double Interlock Zone Operation” on page 123).
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 detec-
tors. When these conditions are met, the “Interlock Release Alarm” and “Detector Alarm” outputs will activate, and the “Inter-
lock Release Alert” outputs will deactivate.
Inputs
Output Results
1st Addressable Detector
X
X
X
X
2nd Addressable Detector
X
X
X
X
Manual Release Station
X
X
X
X
Normal Interlock Release Alert
Interlock Release Alarm and Detector Alarm
Table 10.6 Single Interlock Zone Operation
!
WARNING:
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.
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
Interlock Release
Alert
Interlock Release Alert and Detector Alarm
Interlock Release Alarm and Detector Alarm
Table 10.7 Double Interlock Zone Operation
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