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

2. The total wiring distance should not exceed 2.9 km (1.8 mile) with 0.8 mm dia. (20 AWG) cable,
(fii +£j
+ £ 3
+...................
£ 9 + £ 1 0
in the below illustration).
fil PI
1 1! J U
i
f\
I
J'
I
Diameter
of wires 0.5 mm dia. 0.65 mm dia. 0.8 mm dia.
Distance 1,100 m 1,900 m 2,900 m
AWG 24AWG 22AWG 20AWG
Distance 0.7 mile 1.2 mile 1.8 mile
Note: The line loop resistance should not exceed 200
ohm for communication line between the farthest
phones (stations (5) and ® ) in the system.
3. One power supply is required for every 30 phones.
*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-24 N power supply and the remotest phone in
each block, should be less than 20 ohm.
No. of YAZ-90-3 used Power supply required
Up to 30 stations 1 pee
From 31 to 60 stations 2 pcs
From 61 to 90 stations 3 pcs
Location of Power supply
Install PS-24N power supply in the center
of each block (30 stations)
Note: When locating power supplies for each block, please count the adaptors for paging or remote operation of lights as
follows;
* one YAW-R 1-zone paging adaptor as 5 YAZ-90-3 phones.
*
one YAW-RA 8-zone paging adaptor as 10 YAZ-90-3 phones.
* one YAW-S remote operation adaptor as 4 YAZ-90-3 phones.
4. Installation location requirements
Do not install YAZ-90-3 phones and power supply to such places as exposed to;
1) high temperature (eg. direct sunlight, air conditioning heat, furnace, etc.)
2) low temperature (eg. refrigirated warehouse).
3) extremely high humidity.
4) water, oil, dust, chemicals, etc.
5) When the system is installed outside the building, such as ski resort and/or between buildings, etc. the cable has to be
buried under ground in metal conduit. Be sure not to run the cable in the sky which invites lightning surge and causes
permanent damage to the system.
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