How to Program a Releasing Zone Appendix A: Releasing Applications
NFS-640 Programming Manual P/N 51333:B 10/03/2003 57
Programming an IRI Abort Switch
The following contains information needed to program an IRI Abort Switch:
Description A standard UL-type delay timer (complies with UL Standard 864) that operates like
ULI, but with additional functions for Cross Zones.
How to program 1. Program the monitor module connected to the abort station with Type Code
ABORT
SWITCH as detailed in “How to Modify an Addressable Monitor Module Point” on
page 23.
2. Select a time for the Releasing Zone Delay Timer (refer to“How to Program a
Delay Timer” on page 54.)
3. Press at this point to save the Abort Switch value if no other fields on the
screen are changing. To change another field on the screen, move the cursor into
position by pressing the arrow keys on the keypad.
How it works When the first alarm occurs in a releasing zone programmed with a cross-zone code,
pressing the abort switch will prevent activation of the releasing zone should a second
alarm occur while the switch is held. When the abort switch is released, if a second
alarm has occurred while the switch was held, the ten-second IRI timer activates
immediately, and the control panel activates the releasing zone outputs at the end of the
IRI timer countdown. When the abort switch is released and a second alarm has not
occurred while the switch was held, the panel waits for the cross-zone conditions to be
met before activating the releasing zone.
WARNING: The IRI abort switch will only work if it is pushed before the second
alarm occurs. If it is pushed after the second alarm, the releasing zone will already
have been activated, and the switch will have no effect.
To Program Do this
IRI Abort Switch Type IRI in the ABORT= field, or press the
NEXT or PREVIOUS
keys, or , until IRI appears in the field.
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