Appendix A: Releasing Applications How to Program a Releasing Zone
54
NFS-640 Programming Manual P/N 51333:B 10/03/2003
How to Program a Releasing Zone
This section provides details for programming the releasing functions: Delay Timer, Abort Switch,
Cross Zone, and Soak Timer.
How to Program a Delay Timer
Use a Delay Timer to specify the elapsed time between alarm activation of an initiating device and activation
of all output devices programmed as release circuits and mapped to that initiating device. You can set the
Delay Timer from 01 to 60 seconds, or to 00 for no delay. The figure below shows graphical representation of
a 15-second timer:
Figure 3 Example of 15-Second Delay Timer
Press at this point to save the Delay Timer 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.
How to Program an Abort Switch
Definition of Abort Switches
The control panel provides for four (4) types of Abort Switches (ULI, IRI, NYC, and AHJ) that you can
use, that will affect the operation of a Delay Timer mapped to the same Releasing Zone. For example,
an Abort Switch selected for Releasing Zone R05 only affects the Delay Timer selected for R05. Other
requirements for using an Abort Switch include the following:
• Connecting a monitor module to a UL-listed abort station, such as the NBG-12LRA shown below.
• Program the monitor module with the Type Code
ABORT SWITCH. (Refer to “How to Modify an
Addressable Monitor Module Point” on page 23.)
• Abort switch shall not be used with a preaction system.
Figure 4 UL-listed Abort Station
This section contains information for programming each type of Abort Switch for a Releasing Zone.
To Program Do this
Delay Timer Enter a value (00-60) from the numeric keys on the keyboard.
Delay = 15
(15 seconds)
All outputs Releasing
Zone R1 activate.
Initiating device(s) in
Releasing Zone R1
activates.
Abort Switch
Manual Agent
Release lever
SYSTEM
NORMAL
SYSTEM
CTIVATED
NBG12LRA station with Abort Switch
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