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IntelliKnight 5820XL Installation Manual
8-16 151209
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-Alert Output Activation
If any single addressable detector is activated, the “Pre-Alert” 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-Alert", 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 "Alert" outputs 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
4 4 4
2nd Addressable Detector
4 4 4
Manual Release Station
4 4 4 4
Interlock/Pressure Switch
4 4 4 4 4
Normal
Pre-Alert
Pre-Alert
Pre-Alert and General Alarm
Pre-Alert and General Alarm
Pre-Alert and General Alarm
Pre-Alert and General Alarm
Pre-Alert and General Alarm
Pre-Alert and General Alarm
Pre-Alert and General Alarm
Pre-Alert and General Alarm
Release and General Alarm
Release and General Alarm
Release and General Alarm
Release and General Alarm
Release and General Alarm