1-12 DESCRIPTION
FIREFINDER-XLS INSTALLATION, OPERATION AND MAINTENANCE MANUAL | CHAPTER 1
It provides communication between its host FireFinder-XLS panel and other
FireFinder-XLS panels and replaces the NIC-C when a ring connection is needed. One
NRC is required in each FireFinder-XLS panel. This NRC must reside in the same
enclosure as the PMI/PMI-2/PMI-3.
The NRC supervises the network to ensure the proper operation. Any faults that are
detected by the NRC are reported to the PMI/PMI-2/PMI-3 for annunciation. In
addition, the NRC has diagnostic LEDs that indicate which faults have been found.
The NRC also performs ground fault detection on its outgoing ring port. The NRC
isolates faults to the individual link in trouble. Communication continues unaffected
(Style 7 only).
In some cases, a reset at the PMI/PMI-2/PMI-3 is required to clear network troubles.
The XLS network can be wired using copper wire, single-mode fiber, multi-mode
fiber, or any combination of the three.
FN2006-U1, FN2007-U1 The FN2007-U1 multi-mode (MM) fiber network module and the
Fiber Network Module FN2006-U1 single-mode (SM) fiber network module can be used
to network FireFinder-XLS panels over large distances using
glass fiber optic cables. They are listed for use only with systems
that include NRC cards, but not NIC-C cards. Each module
mounts to a COM-BRK bracket. The COM-BRK takes up the
same space as the CC-2 card cage.
OCM-16 Output Control The OCM-16 is a remotely located, general purpose output module.
Module It provides sixteen open collector outputs to drive LEDs, incandescent
lamps, or external relays. There is an additional output for a local audible
and two inputs for momentary lamp test and local audible silence
switches.
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