Questions and answers specific to the Notifier NFS2-640.
In FlashScan mode, the NFS2-640 supports 318 devices per loop, consisting of 159 detectors and 159 modules (Page 8) [1]. The total system capacity is 636...
To troubleshoot a ground fault, first check the panel display to determine if the fault is internal or on the field wiring. A GROUND FAULT LOOP x message...
To perform a walk test on the NFS2-640, you must first ensure the panel is not in an alarm condition, as the test cannot be initiated during an active alarm...
The NFS2-640 is the updated version of the NFS-640, featuring a CPU2-640 processor, support for high-speed networking, and compliance with newer safety...
Whether an NCM is required depends on if the system is stand-alone or networked. For a stand-alone NFS2-640 system, the NCA-2 can connect directly to the...
The NFS2-640 uses two 12-volt batteries with a capacity range of 18 AH to 200 AH (Page 4) [1]. A separate cabinet is required for battery configurations...
To connect a UDACT or UDACT-2 to an NFS2-640 for central station monitoring, wire the communicator to the panel's EIA-485 ACS port and provide non-resettable...
The NFS2-640 features four onboard Notification Appliance Circuits (NACs) rated at 1.5 A each (Page 2) [1]. These 24 VDC circuits are supervised and...
Yes, you can program the NFS2-640 directly from the front panel keypad using the KDM-R2 display without needing VeriFire Tools [1]. The panel supports both...
An INVREP trouble indicates that a device has returned a response to the control panel that was not expected (Page 72) [1]. The most common causes for this...
