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Installation
50
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SLC In (–)
SLC In (+)
SLC Out (–)
SLC Out (+)
Figure 30 ISO-X Module Terminal Connections
Isolating a Branch of a Two-wire SLC
A short circuit on the SLC Style 4 branch (connected to ISO-X terminals 3 and 4)
causes the branch to be disconnected and isolated from the remainder of the SLC. This
prevents a communication problem with all other addressable devices on the branches
(labeled "Continuation of the SLC" in Figure 31) and all addressable devices on the
isolated branch will report a trouble condition at the CPU.
SLC
Figure 31 Wiring an ISO-X (Style 4)
2.9.10 Wiring an IDC with Monitor Modules
Overview of Monitor Modules
The FMM-1, FZM-1, and FMM-1 Monitor Modules are addressable modules that
monitor conventional contact-type, alarm, supervisory, security, alert, or trouble
initiating devices. You can wire a supervised monitor-module circuit as an NFPA Style
B or Style D Initiating Device Circuit (refer to Figure 34 and Figure 35 for Style B;
refer to Figure 36 and Figure 37 for Style D).
Refer to 2.9.6 "Setting an SLC Address for a Module" for instructions on addressing
the modules.
•
FMM-1. Use for wiring Style B and Style D IDCs.
•
FZM-1. The FZM-1 Monitor Module is an addressable module used to monitor a
single Initiating Device Circuit of smoke detectors. Use FZM-1 modules to
monitor conventional, two-wire smoke detectors. The FZM-1 requires an
Wiring a Signaling Line Circuit (SLC)
Continuation
of the SLC
T-Tapped
branch off the
SLC
AFP-200 PN 15511:H2 10/14/2002
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