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18
en | Wiring
* This table gives capacitance in microFarads (μF), but the
graph gives it in nanoFarads ( nF). For example, 0.12 μF =
120 nF.
4.2
Wiring the loops
Determine the appropriate configuration (number and type of
devices and wire size and length).
1.
Figure 4.1: Wiring Class A loops and Class B branches
1 I/O module wired as Class
3 Ground wire
5 I/O module wired as Class
7 Ground wire
9 Class B branch (addresses 9 to 128)
All MUX terminals are power-limited and supervised
2.
3.
2016.10 | 1.0 | F.01U.330.684
Run solid wire from the FACP to the device locations and
connect the multiplex loop.
A
B
Ensure the loop is disconnected from the FPE‑7039
Module.
Measure loop resistance by shorting:
the end of the farthest device in Class B.
Maximum wire length
2 Wiring harness
4 Class A loop (addresses 9
6 Wiring harness
8 Class B branch
MUX expansion module
to 128)
(addresses 129 to 255)
Bosch Security Systems. Inc.
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