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4-3
The local mode TIC contains an RUI input, port for connecting to other transponder
modules, and terminal block for connecting to an optional Local Mode Controller. Local
Mode Controllers are mounted remotely from the transponder. Installation instructions are
supplied with the controller.
Local mode operation allows a TIC to provide life safety operations in the event of a
communication loss with the master controller. More specifically, this provision means
that fire alarm inputs and outputs within the transponder cabinet can still work in a limited
capacity to allow continued functioning of local initiating devices and notification
appliances connected to the TIC. Local mode is considered a “degraded” mode of
operation because full fire alarm system functionality is not guaranteed.
Because the TIC is a slave module that occupies an RUI address, it can indicate a trouble
condition to the master controller in the event of a hardware failure. When local mode is
initiated, all slave devices locally connected to the TIC are notified by the TIC that local
mode is taking effect. From that point until communication is restored to the master
controller, the TIC
”group-polls” all connected local slaves, and the slaves respond only in the event of an
alarm input activation. Other status changes, including troubles, are not reported.
Continued on next page
Introduction to MINIPLEX Transponders (4100U), Continued
The Local Mode TIC
(Not currently
available in
Australia).