Aiphone YAZ-90-3W - Manual (Page 4)

1. Cable
Use twisted pair cable, not straight conductors. (Type CPEV, shielded)
(1) YAZ-90-3W station employs such components as CPU(microprocessor) and 1C chips. Twisted pair
cable must be used to prevent the unit from being interfered by line inductive noises generated by
the surrounding electricai appiiances and from crosstalk and malfunction caused by cable
conductors themselves.
(2) Keep at least 30cm (1 ’) away from other cable, like AC power lines, paging speaker lines or
telephone lines, or provide metal conduit for running cable.
2. Wiring distance
The total wiring distance should not exceed 2.9Km (1.8 mile) with 0.8mm dia. cable (20AWG).
(Ii+l2+i3 +............... £9 +£io\n the below illustration)
Note; The line loop resistance should not exceed 200 Ohm for communication line between the farthest
stations (Stations 5 and 10) in the system.
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WIRING ------------------------------------------------------------------------------------------------------------
DIAMETER 00.5mm 00.65mm 0 0.8mm
DISTANCE 1,100m 1,900m 2,900m
AWG 24AWG 22AWG 20AWG
DISTANCE 0.7 mile 1.2 mile 1.8 mile
3, One power supply is required for every 30 Stations
BLOCK A
STATION
1
STATION
30
Q! PS-2420
BLOCK B
STATION
60
DI PS-2420
BLOCK C
STATION
90
I'M
|D|
PS-2420
No. Of YAZ-90-3W used
Power supply
required
Location of Power supply
Up to 30 stations
From 31 to 60 stations
From 61 to 90 stations
1 pee
2 pcs
3 pcs
Install a PS-2420 power
supply in the center of each
wiring block of 30 stations.
Notes;
• When power supply is installed in each Block:
#1,2 and 3 as shown in the left illustration, do
not connect terminals +, - between each Block.
• The loop resistance of power supply line
between PS-2420 power supply and the
farthest Station in each Block, should be less
than 20 Ohm.
• When locating power supplies for each Block,
count the paging adaptors as follows;
• one YAW-RB single-zone paging adaptor as
5 X YAZ-90-3W Stations.
4. Installation location requirements
In general, observe the installation location requirements as stated in PRECAUTIONS section.
When the YAZ system is installed outside the building, such as ski resort and/or between buildings, etc.
the cable has to be buried under ground in metai conduit. Be sure not to run the cable in midair which
can invite lightning surge and causes permanent damage to the YAZ system.
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