Control Panel Installation
53722
4-7
4.4
SBUS Wiring
This section contains information on calculating SBUS wire distances and the types of wiring
configurations (Class A and B).
4.4.1
Calculating Wiring distance for SBUS modules
The SCSS-700 panel has two SBUS circuits which can support up to 1.0A of module load per
SBUS circuit. When determining the type of wire and the maximum wiring distance that can
be used, you will need to calculate loads for each SBUS to ensure that each SBUS does not
exceed 1.0A.
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 SBUS
circuit. 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.
Note: Total worst case current draw on a single SBUS cannot exceed 1 amp. If a large number of accessory mod-
ules are required, and the worst case current draw will exceed the 2 amps total, then the current draw must
be distributed using 5895XL Power Expanders. Each 5895XL Power Expander provides an additional
SBUS, with an additional 1 amp of SBUS current. Wiring distance calculations are done separately for
each 5895XL, and separately for each control panel SBUS.
After calculating the total worst case current draw, Table 4-1 specifies the maximum distance
the modules can be located from the panel on a single wire run. The table insures 6.0 volts of
line drop maximum. In general, the wire length is limited by resistance, but for heavier wire
gauges, capacitance is the limiting factor. These cases are marked in the chart with an asterisk
(*). Maximum length can never be more than 6,000 feet, regardless of gauge used. (The
Model Number
Worst Case Current Draw
SCSS-700ANN Fire Annunciator
.120 amps
5815XL
.150 amps
5824 Serial/Parallel Printer Interface Module .040 amps
5880 LED I/O Module
.250 amps
5865 LED Fire Annunciator
.200 amps
5895XLIntelligent Power Supply
.010 amps
5496 Intelligent Power Supply
.010 amps
VIP-50
.010 amps
VIP-125
.010 amps
VIP-VCM/VIP-VCM with VIP-SW16
.125 amps/.200 amps
SCSS-700RM/SCSS-700RM with VIP-
SW16
.125 amps/.200 amps
Содержание SCSS-700
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Страница 130: ...Model SCSS 700 Installation Manual 8 8 53722 Figure 8 4 Example of Zone Events Mapped to output Groups and Patterns...
Страница 131: ...Programming Overview 53722 8 9 Figure 8 5 Example of Zone Events Mapped to Output Groups and Patterns on a Single Panel...
Страница 134: ...Model SCSS 700 Installation Manual 8 12 53722 Figure 8 9 Example of SCSS 700PK Software mapping Site Events...
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