LG PQNFB17B0 - Manual (Page 20)

How to install
• When using the simple central controller with the BACnet Gateway
1. Connect the BUS-A and the BUS-B of the PI485 to C and D of the simple central controller.
2. Set the rotary switch of the simple central controller to match with the group number of the indoor
unit to control.
3. Set the dip switch number 1 of the simple central controller to Off as slave and set the dip switch
number 2 to On as LGAP use mode.
Note: Check the LGAP label at the right side of the case of the simple central controller.
Only the product with the label can be connected to the BACnet Gateway at the same time.
Connect the VCC and the GND of the simple central controller from the P1485 or separately to
the adaptor. (See the manual for the simple central controller.)
ON L1 2 3 4 KSDO4H
Multi V
PI485
TX
RX
ON L1 2 3 4 KSDO4H
Multi V
PI485
Rotary switch
DIP switch
Simple central controller
BUS-A
BUS-B
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
Ext 1 TX
RX
Ext 2 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
Shield line of 0.75 mm 2
(RS-485 communication line)
’
Ex)When controlling
the indoor Unit 10~1F,
setting the switch to 1.
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
ON
L1 2 3 4
KSDO4H
1
2
3
20 BACnet Gateway