Fire-Lite Alarms MS-5210UD, Руководство пользователя

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Document #50193 Rev. E 01/30/02 P/N 50193:E
117
Wire Requirements
Appendix G
Wire Requirements
Connecting external system accessories to the MS-5210UD main circuits must be carefully considered to ensure
proper operation. It is important to use the correct type of wire, wire gauge and wire run length per each MS-5210UD
circuit. Reference the chart below to specify wire requirements and limitations for each MS-5210UD.
TABLE 6-1:
Wire Requirements
CIRCUIT CONNECTIONS WIRE REQUIREMENTS
CIRCUIT TYPE
CIRCUIT
FUNCTION
WIRE TYPE AND
LIMITATIONS
RECOMMENDED
MAX. DISTANCE
(FEET)
WIRE GUAGE
Initiating Device
Circuit
(power-limited)
Connects to Initiat-
ing Devices
Untwisted, unshielded wire
(Do not exceed 100 ohms)
10,000 (3,000 m)
8,000 (2,400 m)
4,875 (1,480 m)
3,225 (975 m)
12 AWG (3.25 mm
2
) Belden 9583
WPW999
14 AWG (2.00 mm
2
) Belden 9581
WPW995
16 AWG (1.30 mm
2
) Belden 9575
WPW991
18 AWG (0.75 mm
2
) Belden 9574
WPW975
EIA-485
LED-10IM Inter-
face Module
(power-limited)
Connects to
annunciator mod-
ules and relay
module
Twisted, shielded pair with a
characteristic impedance of
120 ohms
6,000 (1,800 m)
18 AWG (0.75 mm
2
)
EIA-232
(power-limited)
PRT-24 output
connects to remote
printer and PC
computer
Twisted, shielded pair 50 (15 m)
18 AWG (0.75 mm
2
) minimum
24 VDC Regu-
lated, resettable,
nonresettable
(power-limited)
Connects to
annunciators and
other accessories
No more than 1.2 volt drop
allowed from supply source
to end of any branch
Distance limitation
set by 1.2 volt maxi-
mum line drop
12 AWG (3.25 mm
2
) - 18 AWG
(0.75 mm
2
)