2: Double Interlock Zone Releasing - Honeywell Farenhyt Series Installation And Operation Manual

Conditions Required for an 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 10.4).
Conditions required for a Detector Alarm and Interlock Release Alarm Output

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 10.4).
1st Addressable Detector
2nd Addressable Detector
Manual Release Station
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 docu-
ment.
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.
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 10.4)." on page 145"Double Interlock Zone
Operation" on page 146).
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.
145
Inputs
Table 10.4 Single Interlock Zone Operation
Output Results
X X
X X
Important!
IFP-300 / IFP-300ECS Manual P/N LS10145-001SK-E:B 12/18/2017
X
X
X X X
X
X
X