3-3
Chapter 3 Installing 4100ES MINIPLEX Components
Introduction to MINIPLEX Transponders (continued)
The Local Mode
TIC
The local mode TIC contains an RUI input, audio riser module interface, 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 and are
available in red or beige (flush or surface mount). Model numbers are 4601-9108, -9109,
-9110, and -9111. 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.
TIC Audio Risers Audio risers are used when digital or analog audio is being transmitted to the transponder
cabinet. They are always mounted directly beneath the TIC, on the leftmost side of the
transponder bay.
Refer to publication 574-844: Communication and audio interface modules installation
instructions to obtain configuration information for 4100-0621, -0622, and
-1341 Audio riser modules.
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