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FCP-75 Manual —
P/N LS10147-003FK-E:A 3/17/2021
Control Panel Installation
SBUS Wiring
3.
Run extended battery cable from control panel cabinet through conduit to RBB cabinet. See Figure 4.6.
Figure 4.6 Battery Connections in the RBB Cabinet
4.
Connect battery leads to the backup battery terminals. See Figure 4.6. Observe the proper polarity to prevent damage to the batteries or
the control panel.
5.
Insert the RBB cover screws into the cover mounting holes (see Figure 4.6). Screw the cover screw 3/4 of the way into the cover
mounting hole.
6.
Align the cover plate mounting keyhole over the cover mounting screws. See Figure 4.7.
Figure 4.7 Cover Plate Mounting Keyholes and Cover Mounting Screws Alignment
7.
Slide the cover into place and tighten the cover mounting screws. See Figure 4.7.
4.4 SBUS Wiring
This section contains information on calculating SBUS wire distances and the types of wiring configurations (Class B).
4.4.1 Calculating Wiring distance for SBUS modules
The following instructions will guide you in determining the type of wire and the maximum wiring distance that can be used with control
panel SBUS accessory modules.
To calculate the wire gauge that must be used to connect SBUS modules to the control panel, it is necessary to calculate the total worst case
current draw for all modules on a single 4-conductor bus. The total worst case current draw is calculated by adding the individual worst case
currents for each module. The individual worst case values are shown in the table below.
conduit
conduit
coupler
+
+
-
-
RBB Cabinet
cover screws
RBB Cabinet
cover screws
NOTE:
Figure 4.6 is an example of how the wire connections can be routed. However, any other cabinet knock-outs (on either the main
control panel or the RBB cabinet), that are not previously being used may be utilized to connect conduit between the two cabinets.
Cover Plate
mounting keyholes
NOTE:
Total worst case current draw on a single SBUS cannot exceed 1 amp.