Simplex VESDA 4100 Series Installation Instructions Manual page 7

Installing the Motherboard into 2975-91xx Back Boxes (4100),
Installing into a
2975-91xx
Expansion Bay
P1
Review the following guidelines before mounting the motherboard into a 2975-91xx Expansion
Bay.

If a power supply is installed in the bay, it must be installed on the far right of the bay
and any relay modules must be installed in the slots immediately to its left.

Relay cards must be installed in the rightmost possible slots. This is necessary to allow
for the proper routing of non-power limited wiring (typically 120 VAC wiring), which
could be connected to a relay module.

If a 4100/4120-0155 SDACT, 4100-6052 Event Reporting DACT, 4100-6053 Point
Reporting DACT, or a 4100/4120-0153 CCDACT is installed in the bay, it must be
installed in the far left or far right slot. Neither of these modules contains the J1 or P1
connectors, which are used to distribute power and communications to adjacent modules.
Use the following directions and Figure 4 to install a motherboard into an expansion bay.
1. Orient the motherboard with the connector labeled J1 on the right and the header labeled
P1 on the left.
2. Match the connector on the previously installed motherboard with the pins on the
motherboard you are installing. Slide the motherboard to the left until the pins are
completely inserted in the connector of the previously installed motherboard. If you are
installing the leftmost board, the pins will remain unconnected.
3. Secure the motherboard to the chassis with four torx screws.
FigureTag FD4-050-02
J1
Figure 4. Installing the Motherboard into a 4100 Expansion Bay
4. If you are installing the leftmost motherboard, connect a 733-525 Power and Communication
Harness. Continue to the next topic to connect the harness.
The motherboard can be installed in any of the
eight slots. If the bay has relay cards, they must
be installed on the far right of the bay.
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