Honeywell 6820, Руководство по установке и оптимизации

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LS10144-001SK-E Control Panel Installation
4-6
Note: Refer to Table 3-2 is using SK Devices and Table 3-3 if using SD SLC devices for maximum number of
each type of device that can be used per system
* All devices must use the same SBUS and VBUS.
** When doing wire calculations, use .080 amps per device with .105 amps for the last device.
After calculating the total worst case current draw, Table 4-2 specifies the maximum distance the modules can be
located from the panel on a single wire run. The table ensures 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 formula used to generate this chart is shown in the note below.
Note: The following formulas were used to generate the wire distance chart:
5895XL Intelligent Power Supply .010 amps
5496 Intelligent Power Supply .010 amps
EVS-50W .010 amps
EVS-125W .010 amps
EVS-100W .010 amps
EVS-100W with EVS-100WBU .010 amps
EVS-VCM / EVS-VCM with EVS-SW24* ** .080 amps / .105 amps
EVS-LOC / EVS-LOC with EVS-SW24* ** .080 amps / .105 amps
SK-NIC Network Interface Card .021 amps
CELL-MOD/CELL-CAB-SK .145 amps
SK-F485C Fiber Converter .125 amps
Table 4-2: Wire Distances Per Wire Gauge Using Copper Wire
Wiring Distance: SBUS Modules to Panel
Total Worst Case
Current Draw (amps)
22 Gauge 18 Gauge 16 Gauge 14 Gauge
0.100 1852 ft. 4688 ft. * 6000 ft. * 6000 ft.
0.200 926 ft. 2344 ft. 3731 ft. 5906 ft.
0.300 617 ft. 1563 ft. 2488 ft. 3937 ft.
0.400 463 ft. 1172 ft. 1866 ft. 2953 ft.
0.500 370 ft. 938 ft. 1493 ft. 2362 ft.
0.600 309 ft. 781 ft. 1244 ft. 1969 ft.
0.700 265 ft. 670 ft. 1066 ft. 1687 ft.
0.800 231 ft. 586 ft. 933 ft. 1476 ft.
0.900 206 ft. 521 ft. 829 ft. 1312 ft.
1.000 (Max) 185 ft. 469 ft. 746 ft. 1181 ft.
Maximum Resistance (Ohms) =
6.0 Volts
Total Worst Case Current Draw (amps)
Maximum Wire Length (Feet) =
(6000 feet maximum)
Maximum Resistance (Ohms)
* 500
Rpu
Table 4-1: SBUS Device Current Draw
Model Number Worst Case Current Draw