Part Description - LG PRHR040 Brochure

61799 LG Multi V Catalogue
CNU (I-Gateway)

Part description

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PI485
PMNFP14A0
Wiring diagram
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outdoor PCB
98_
Air conditioning system
9/5/07 9:18 am Page 98
CNU (I-Gateway) / PI485
PQNFG14B0
Adaptor connection
DC 9V (supplied)
RJ45 connector
Connected with the HUB
Deluxe central controller
PI485 connection
BUS_A : PI485 A terminal[+]
AC/DC adaptor
BUS_B : PI485 B terminal[-]
PMNFP14A1
CN_central
Features
CNU converts the ethernet protocol into RS 485 protocol and vice versa.
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Used with deluxe and P/C based central controllers.
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Wiring diagram
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Without hub
With hub
Features
PI485 converts the protocol of air-conditioner to the 485
protocol for central controller.
Device for simple/deluxe/PC controllers.
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Supports communication wires length flexibility up to 1km.
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Different types of PCB for different products.
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-Option select (LGAP, CAC, RAC)
-LED display (Communication state)
-Four different types
Available Max. 16 Indoor units : PMNFP14A0
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Available Max. 48 Indoor units : PMNFP14A1
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Multi outdoor terminal block
A B E F C D VCC GND
BUS_A
BUS_B
Cross cable
Direct cable
Direct cable
BUS_A
BUS_B