LG V-Net AC Smart II, Owner'S Manual, Page: 27 / 239

Installation/Owner's Manual
2-12
2. AC Smart II Installation
+
S19
ED17
Rotary
Switch
DIP
Switch
ON
L1 2 3 4
KSDO4H
ON L1 2 3 4
KSDO4H
+100
GND
BUS_A
BUS_B
RS485
CN-POWER
GND
CN-COM A
S4
S3
S12
S16
TX1
LED4
LED8
LED12
LED11
LED16
LED15
PWB:6870A10001A
ASM:6711A20005E
LED7
LED3
L
+ +
+ +
+
+
+
+ +
S15
S18
S19
S15
S11
S2
LED2
S5
S9
+
+
+
S1
IC1P
LED5
LED9
LED13
LED17
LED10
LED14
S14
+
S6
S10
CN-POWER
CN-COM B
ON
L1 2 3 4
KSDO4H
C
D
GND
BUS_A
BUS_B
Information: Connection setting when using simple central
controller with AC Smart
You can use a simple central controller with AC Smart. When you want to use a simple central
controller with AC Smart, connect the simple central controller in the order shown as follows.
1
. Connect the BUS-A and BUS-B port of PI485 to the A and B terminal of the simple central
controller using the RS485 communication cable.
2
. Set the rotary switch of the simple central controller to align with the group number of the
indoor unit to control. For example, when you want to control the indoor units with the address
of 00~ 0F, set the rotary switch to 0.
3
. Set the DIP switch No. 1 of the simple central controller to OFF (Slave) and No. 2 to ON (LGAP
use mode).
Reference: Check V-net Label
Check the V-net Lbel on the right side of the case of the simple central controller. AC Smart II
can be simultaneously connected only to the product with the label.
You must connect the VCC and GND terminal of the simple central controller to connection of
PI485 or to a separate adapter. For more details, refer to the manual of the simple central