CKM-CE75-E1M Fire Alarm Interface Input
24-10707-112 Rev. D
4-2
Activation with a Voltage Input
FAI activates when voltage is applied in the
correct polarity, and deactivates when voltage
is removed or the polarity of the voltage is
reversed. This example shows polarity in the
activated state.
Latching the FAI Input
To achieve latching of the FAI input, place an
NC contact across the two L terminals. The FAI
may be activated by any of the methods listed
in this chapter. FAI deactivates when the input
is deactivated and the NC latching contact is
momentarily opened. This example in shows
NO contact activation with latching.
FAI activates when the NO contact closes, and
deactivates when the NO contact opens and the
NC contact momentarily opens.
Activation with a Normally Open Relay Contact and CKM-FPO AC Fault
Lock Override
FAI activates either when the Fire Alarm NO
contact closes or when the AC Fault NC
contact closes.
FAI deactivates either when the Fire Alarm NO
contact opens or when the CKM-FPO AC Fault
NC contact opens.
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