Alarm / Pulse Input Terminal Block Tb4 - Honeywell CNI2 Operating And Installation Manual

CNI2 Operating and Installation Guide
The "CALL" input is usually connected to a magnetic switch located inside the unit. You can
activate the switch by placing a strong magnet near this spot on the outside of the enclosure.
Alternatively the switch can be a simple pushbutton switch located inside the unit or protruding
from the wall of the enclosure. Or you can just momentarily short the J9 pins with a screwdriver
or coin. This switch will cause the CNI2 to immediately call in to the central computer and report
a "Call" or "Mag. Switch' alarm.
The "TAMPER" switch is often a magnetic switch mounted to the side of the enclosure and a
magnet on the door. When the door is opened the magnet and switch separate and generate
an alarm. This is often used to detect intrusion as well as record service events.
If you wish to use these inputs for any other purpose you can rename them in the data collection
system. For instance you could rename the "Tamper" alarm as "Low Pressure" or "High
Temperature".
You can also combine the "Call" and "Tamper" inputs together as a Form-C ("KYZ") pair, in
which case the combination is reported as a "Call" alarm to the data collection system. A
Form-C switch consists of one normally-open and one normally-closed switch. If at any time
both are open or closed this is considered a failure and will be reported as a "Tamper" alarm.
The "Power Fail" input is usually used to detect the loss of ac mains power. When the alarm
goes active this will be reported as an "AC-OFF" alarm. When it returns to an inactive state an
"AC-ON" alarm will be reported. Again if you wish to use this input for any other purpose you
can rename it in the data collection system.
In many standard configurations the J7 "Alarm" input can also be used as an alarm or pulse-
counting input. This input is not reported to the system as any particular alarm but the CNI2 can
still call in immediately if this input goes active or inactive. Usually if this line is programmed as
an input it is used for pulse-counting rather than an alarm.

Alarm / Pulse Input Terminal Block TB4

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