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Check points during the ACP Lonworks installation
• The number of PI485 connected to one RS-485 communication line ACP Lonworks provides 6
RS-485 ports. (CH1 ~ CH6)
- CH1 ~ CH4 : ACP Lonworks provides 4 RS-485 ports for indoor unit connection.
(Up to 64 indoor units)
- CH5 : ACP Lonworks provides 1 RS-485 port for AHU unit connection.
(Up to 16 AHU units)
- CH6 : ACP Lonworks provides 1 RS-485 port for Chiller unit connection.
(Up to 15 Chiller units)
Up to 16 PI485 for outdoor unit can be connected to one RS-485 port, and up to 31 PI485 for
SINGLE/ventilation can be connected.
• The number of the indoor units that can be connected to one ACP Lonworks One ACP Lon-
works can be connected up to 64 indoor units.
To one RS-485 port, all of 64 indoor units, which is the maximum number that can be con-
nected to the ACP Lonworks, may be connected.
But, to improve the communication performance of RS-485, it is recommended to be divided
and connected to 4 ports.
• RS-485 communication cable connection
There is a polarity in RS-485 communication cable connection, so be careful not to reverse the
connection of the two cables.
Do not let the length of RS-485 communication cable exceed total of 1 km.
RS-485 communication cable must be connected with BUS type.
• IP address of the ACP Lonworks
IP address of the ACP Lonworks, address of Gateway, and Net mask must be requested to the
person in charge of the network of the corresponding site.
RS-485 Connection of the ventilation equipment
To connect ventilation equipment, it is recommended to use the ports other than RS-485
communication ports which are connected to air conditioners.
INSTALLING ACP LONWORKS
9
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