NFPA 72-1999 Proprietary Fire Alarm Systems Applications
NFS-640 Installation Manual P/N 51332:B1 12/01/2003 59
4.3 NFPA 72-1999 Proprietary Fire Alarm Systems
When connected and configured as a protected premises unit with UDACT, the NFS-640 will
automatically transmit General Alarm, General Trouble, and General Supervisory signals to a listed
compatible Protected Premises Receiving Unit. See the UDACT Manual for compatible receiving
units. A simplified drawing of connections between a receiving unit and an NFS-640 protected
premises unit is shown in Figure 36.
Connect the receiving unit to the protected premises unit as shown in Section 4.2 “NFPA 72-1999
Central or Remote Station Fire Alarm System (Protected Premises Unit)”.
For information on installing and programming the Receiving unit, refer to the documentation for
that control panel.
Figure 36 Typical Proprietary Fire Alarm Systems Wiring Connections
4.4 Fire/Security Applications
Note: NFS-640 is not approved for use in security applications in Canada.
4.4.1 General Operation
The control panel can be used as a combination Fire/Security system when installed and operated
according to the instructions in this section.
For security applications, program one or more monitor module (listed for security applications)
with the
SECURITY Type Code, and wire as shown in Figure 38. Activating this type of module
lights the
SECURITY LED, and displays a security alarm condition on the control panel LCD display.
The panel sounder will sound until the Security alarm is acknowledged. You can also program
additional sounders or output devices to activate with the security alarm initiating device. The
SECURITY Type Code is designed to indicate an alarm as follows: (a) on an open or short circuit; or
(b) on a ±50% change in resistance value from the End-of-Line resistor value.
A tamper switch installed in the cabinet door will indicate a door tamper condition whenever the
door is open. If the control panel indicates a Security alarm, you can acknowledge, silence, and
reset the condition from the control panel.
When the system resets, a 30-second exit timer starts. During this time the tamper switch and all
Security alarms are ignored. There is no entrance delay timer.
NFS-640
Protected Premises Unit
Compatible Receiving Unit
(see UDACT Manual)
Telephone line & backup
UDACT
NFS-640
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