Names And Functions Of Controller Components - Mitsubishi Electric AT-50A Instruction Book

Names and Functions of Controller Components

Product features
The AT-50A described in this manual is a centralized controller with color LCD touch panel for air
conditioning units, LOSSNAY, and General equipment using the Mitsubishi Electric DIDO controller (PAC-
YG66DCA).
AT-50A can control up to 50 units/50 groups. (*1)
AT-50A controls and monitors the air conditioning units of each group. AT-50A also can control detailed
scheduling and prohibits the local remote controller operation in each room (group), which may lead to
energy savings.
Basic operations are accessed through the AT-50A touch panel. ON/OFF, F1, and F2 operations that
control air conditioning units collectively are accessed by using buttons next to the touch panel.
AT-50A display screen consists of three types, corresponding to the usage.
HOME screen : Monitoring screen to monitor the operation status of the units
(described in this Instruction Book)
Main Menu screen : Setting screen to set the functions such as schedule settings
(described in this Instruction Book)
Maintenance screen : Initial setting screen to set the basic systems such as group settings
(described in the Installation Manual)
* 1 Group: minimum unit to be controlled by AT-50A
A group consists of units (16 units maximum).
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4
5
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1 2
Buttons 2, 3, and 4 have indicators on the top.
Touch panel / Buttons
1 Display/Touch panel
AT-50A features a 5" color LCD touch panel. Touch panel displays the operation status of the
units. Function settings such as week schedule settings are accessed through the touch panel.
The backlight lights up when the panel is touched, and lights off after certain period of time. The
backlight will remain lit as long as an error exists.
2 Collective ON/OFF Button *1
The Collective ON/OFF button enables the collective ON/OFF function that allows the user to
turn on/off the air conditioning units, LOSSNAY, and DIDO controllers in all groups collectively.
The indicator corresponds to the operation status of controlled units.
Unlit : Indicates that all units are stopped.
Lit : Indicates that one or more units are in operation.
Blink : Indicates that an error is occurring.
3 Function 1 Button (F1), 4 Function 2 Button (F2) *1 *2
Desired functions from the following list can be assigned to the F1 and F2 buttons.
(Setback/Schedule/Operation Mode/Temperture Correction/Remote Controller Prohibition)
The functions to assign to these buttons can be selected from the Function Key Setting on the
Control Panel.
The indicator on the buttons indicates the enabled/disabled status of the function.
Unlit : The assigned function is disabled.
: The assigned function is enabled.
Lit
The indicators on the F1 and F2 buttons will be lit or unlit when the functions that are assigned to
the F1 and F2 buttons are enabled or disabled from the Collective Operation panel.
5 Power indicator
The power indicator lights up when the power to AT-50A is turned on.
Unlit : Power OFF
Lit : Power ON
*1 When the button is pressed while the operation is prohibited, the LED will blink twice.
*2 Buttons 2, 3, and 4 are available only on the HOME screen.
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