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Installation/Owner's Manual
2-21
2. Installing ACP
Tip: Connecting the RS485 of the ACP
64 outdoor units at maximum can be connected to one port of the RS485 of the ACP and 256
indoor units at maximum can be connected to one ACP. When there are many outdoor units to
connect, connect the outdoor units suitably from LG-NET1 to LG-NET4 with the BUS form.
Otherwise, the ACP may cause the malfunction.
The following figure shows the example for separately connecting the LG-NET1 and the LG-NET2
with the BUS form.
Simple central
controller
Multi V
PI485
ON
L1 2 3 4
KSDO4H
Multi V
PI485
ON
L1 2 3 4
KSDO4H
Multi V
PI485
ON
L1 2 3 4
KSDO4H
Multi V
PI485
ON
L1 2 3 4
KSDO4H
Multi V
PI485
ON
L1 2 3 4
KSDO4H
Multi V
PI485
ON
L1 2 3 4
KSDO4H
LG-NET 1
MENU/
SELECT
TX
RX
LG-NET 2
TX
RX
LG-NET 3
TX
RX
LG-NET 4
TX
RX
Ethernet 1
ACT
LNK
Ethernet 2
ACT
LNK
Console
Run
Power
TX
RX
FDD
TX
RX
Ext.
TX
RX
DI
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
DO
1
2
3
4
ACP
TX
TX
RX
RX
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