Mitsubishi Electric AG-150A-A Installation Manual page 10

NOTES
* Up to three PAC-YG50ECA controllers can be connected to each AG-150A unit.
* Main system controllers (e.g., AG-150A) cannot be connected to an M-NET system that is controlled by an Expansion controller.
* Main and sub system controllers (M-NET)
AG-150A is for exclusive use as a main SC. AG-150A cannot be used as a sub SC.
• Main system controller (Main SC)
Main SC refers to a controller that controls all other system controllers including the units they control. If a given system has
only one system controller, that controller becomes the main controller. Group settings and interlock settings can only be made
from a main controller.
• Sub system controller (Sub SC)
Sub controller refers to a system controller that is controlled (including the units it controls) by a main system controller.
AG-150A, PAC-YG50ECA etc.
Range of units the main SC
controls (M-NET)
Range of units the
sub SC controls
Group Group
NOTES The following types of configurations are not possible.
• A sub controller can only control the groups that are under the control of its main controller.
• No groups can be placed under the control of more than one main system controller.
• No sub system controllers can be placed under the control of more than one main system controller.
AG-150A is for exclusive use as a main SC. AG-150A cannot be used as a sub
Group
SC or controlled from another main SC.
Main system
controller
Group Group
Main system
controller 1
Group Group
Main system
controller 1
Group Group
Sub system
controller
Group
Main system
controller 2
Group
Sub system Main system
controller controller 2
Group
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Group