English
In order to connect the LG air conditioning units (the Multi V, Multi M, Multi F, Single A, RAC, eco V series etc.) the PI485 communication interface can be used (with variants such as the PMNFP14A0, PMNFP14A1, PHNFP14A0 and PSNFP14A0, then LGAP protocol) mounted in outdoor or indoor units of air conditioning equipment, which should be connected to the CH2 communication channel (CH3, CH4) of the Foxtrot basic module. Up to 256 indoor units (16 groups of 16 indoor units) can be connected to one communication interface (RS-485). The communication converters must be properly addressed and connected (see the Fig.); no other configuration is needed. The necessary condition is a proper connection of air conditioning units according to the manufacturer's specifications.
In order to operate the units, there is an FB library available. The Foxtrot system features allow monitoring the units (indoor unit errors, filter status, temperature, fan speed, mode, keypad lock in the local thermostat, plasma filter, etc.) and controlling the units (the fan speed, the operation mode, the required temperature, the active switching of the thermostat, the thermostat keys lock, the plasma, etc.).
The following units can be used for the connection:
The Multi V Multi V Plus, Multi V Super, Multi V Sync, Multi V Water series
The Multi & Single Multi M/MDX, Multi F/FDX, Single A series
Units of bottled water Products of bottled water RAC
The ventilation units eco V
Variants of communication modules:
PMNFP14A0 installation to the Multi V, Multi, Single A outdoor units
A maximum of 16 indoor units can be connected to the outdoor unit
PMNFP14A1 installation in the Multi V outdoor units
A maximum of 48 indoor units can be connected to the outdoor unit
PHNFP14A0 installation in indoor units Single (Duct, CVT)
only 1 indoor unit on the interface module
PSNFP14A0 installation in the indoor units Single (RAC, PAC, CST)
only 1 indoor unit on the interface module
Fig. 1. An overview diagram of the SAMSUNG units connection to the FOXTROT system
Fig. 2. An example of connecting the PI485 (LG) communication interface to the CP-1000
Notes:
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The CH2 communication interface of the CP-1000 basic module in the example is fitted with the MR-0114 submodule; for more information see the documentation.
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The RS-485 interface connecting cable between the CP-1000 and the PI485 interface modules in LG units is a standard cable for RS-485, a shielded twisted pair, with 0.35 mm diameter.
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The maximum length of the cable is about 1,000 m; it is necessary to observe the installation rules for the RS-485 cable.
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Detailed information on connection of the indoor and outdoor units and their installation is listed in the company materials on LG air conditioning units.