Mitsubishi Electric AT-50B Manuale utente

Before using the controller, read this

Instruction Book carefully to ensure

proper operation.

Retain this Instruction Book for future

reference.

Make sure that this manual as well as the

Installation Manual are passed on to any

future air condition system users.

To ensure safety and proper operation of

the unit, the unit should only be installed

by qualified personnel.

Air-conditioner Control System

Advanced Touch Controller

MODEL

AT-50B

Instruction Book

Safety Precautions .............................................................. 2

Function List ........................................................................ 4

Names and Functions of Controller Components................ 6

Screen Conguration [HOME screen] ................................. 8

Buttons [HOME screen]..................................................... 10

Icon Displays [HOME screen]............................................ 12

Basic Operations ............................................................... 16

Screen selection......................................................................... 16

Group selection .......................................................................... 17

Operation Screen (GROUP screen)........................................... 18

Operating the Air conditioning unit group • Air To Water (PWFY) group

.... 18

ON/OFF operation........................................................................ 18

Mode............................................................................................. 18

Temperature setting...................................................................... 21

Interlocked ventilation units(LOSSNAY)/Fan speed/Air direction/Louver settings

....... 23

Disable-Scheduled-Operation button ........................................... 24

Operating the LOSSNAY group.................................................. 24

Mode............................................................................................. 24

Fan speed setting......................................................................... 24

Operating the general equipment group..................................... 24

ON/OFF operation........................................................................ 24

Multiple group selection screen.................................................. 25

Disabling functions ..................................................................... 25

Menu Screen ..................................................................... 26

Usage - Main Menu Settings ............................................. 28

Operation Setting ....................................................................... 28

Restriction Settings .................................................................... 44

Control Panel.............................................................................. 52

System Management ................................................................. 59

Maintenance...................................................................... 64

Touch Panel Cleaning screen..................................................... 64

Troubleshooting................................................................. 65

Safety Precautions

Indicates a risk of death or serious injury.

●Thoroughly read the following safety precautions prior to installation.

●Observe the following precautions to ensure safety.

Indicates a risk of serious injury or structural damage.

WARNING

CAUTION

●After reading this manual, pass it on to the end user to retain for future reference.

●Keep this manual for future reference and refer to it as necessary. This manual should be made available to those who repair or relocate

the controller. Make sure that the manual is passed on to any future AT-50B users.

All electric work must be performed by qualied personnel.

General precautions

(Prohibited actions) (Do not touch) (No water) (No wet hands) (Electric shock hazards) (Injury hazards) (Important actions)

WARNING

Do not install the unit in a place where large amounts

of oil, steam, organic solvents, or corrosive gases,

such as sulfuric gas, are present or where acidic/

alkaline solutions or sprays are used frequently.

These substances can compromise the performance

of the unit or cause certain components of the

unit to corrode, which can result in electric shock,

malfunctions, smoke, or re.

To reduce the risk of shorting, current leakage,

electric shock, malfunctions, smoke, or re, do not

wash the controller with water or any other liquid.

To reduce the risk of electric shock, malfunctions,

smoke or re, do not operate the switches/buttons or

touch other electrical parts with wet hands.

To reduce the risk of re or explosion, do not place

ammable materials or use ammable sprays around

the controller.

CAUTION

To reduce the risk of damage to the controller, do not

directly spray insecticide or other ammable sprays

on the controller.

To reduce the risk of electric shock or malfunctions,

do not touch the touch panel, switches, or buttons

with a pointy or sharp object.

Precautions during installation

WARNING

Do not install the controller where there is a risk of

leaking ammable gas.

If ammable gas accumulates around the controller, it

may ignite and cause a re or explosion.

Properly dispose of the packing materials. Plastic

bags pose suffocation hazard to children.

To reduce the risk of injury or electric shock, before

spraying a chemical around the controller, stop the

operation and cover the controller.

To reduce the risk of injury or electric shock, stop

the operation and switch off the power supply before

cleaning, maintaining, or inspecting the controller.

Properly install all required covers to keep moisture

and dust out of the controller. Dust accumulation and

water can cause electric shock, smoke, or re.

To reduce the risk of injury and electric shock, avoid

contact with sharp edges of certain parts.

To avoid injury from broken glass, do not apply

excessive force on the glass parts.

To reduce the risk of injury, wear protective gear

when working on the controller.

●Nomenclature

Precautions for moving or repairing the controller

WARNING CAUTION

The controller should be repaired or moved only by

qualied personnel. Do not disassemble or modify the

controller.

Improper installation or repair may cause injury,

electric shock, or re.

To reduce the risk of shorting, electric shock, re,

or malfunction, do not touch the circuit board with

tools or with your hands, and do not allow dust to

accumulate on the circuit board.

Additional precautions

To avoid damage to the controller, use appropriate tools to

install, inspect, or repair the controller.

AT-50B is designed for exclusive use with the Building

Management System by Mitsubishi Electric. The use of this

controller for with other systems or for other purposes may

cause malfunctions.

To avoid damage to the controller, do not overtighten the

screws.

To avoid discoloration, do not use benzene, thinner, or

chemical rag to clean the controller. To clean the controller,

wipe with a soft cloth soaked in mild detergent that is diluted

with an appropriate amount of water, and wipe down with a

wet cloth followed by a dry cloth. Do not use the detergent

straight.

To avoid damage to the controller, provide protection against

static electricity.

If the supply cord is damaged, it must be replaced by the

manufacturer, its service agent or similarly qualied persons

in order to avoid a hazard.

This appliance is not intended for use by persons (including

children) with reduced physical, sensory or mental

capabilities, or lack of experience and knowledge, unless

they have been given supervision or instruction concerning

use of the appliance by a person responsible for their safety.

Children should be supervised to ensure that they do not

play with the appliance.

This appliance is intended to be used by expert or trained

users in shops, in light industry and on farms, or for

commercial use by lay persons.

Function List

The table below summarizes the functions that are available on the AT-50B.

Refer to the pages listed for details.

Function Description Page

Unit Operation

ON/OFF operation

Switches the ON/OFF operation of the units such as air conditioning

units. The LED on the Collective ON/OFF button will light up when one

or more units are in operation and off when all units are stopped.

Mode

Switches the mode as follows for each group or all groups.

Air conditioning unit group: Cool/Dry/Fan/Auto/Heat

LOSSNAY group: Bypass/Heat recovery/Auto

Air To Water (PWFY) group: Heating/Heating ECO/Hot Water/

Anti-freeze/Cooling

Set Temperature Sets the set temperature for each group or all groups. 21

Fan Speed Adjusts the fan speed for each group or all groups. 23

Air Direction Adjusts the air direction for each group or all groups. 23

Louver Enables/disables the louver for each group or all groups. 23

ON/OFF operation

for interlocked

ventilation

The ON/OFF operation of the interlocked ventilation unit is interlocked

with the ON/OFF operation of the air conditioning unit. The interlocked

ventilation units can be independently operated for ON (High/Low)/OFF

for each group or all groups. (When the ventilation unit is interlocked

with the air conditioning unit, the ventilation mode cannot be used.)

Collective Operation The following functions can be collectively executed on multiple groups:

Setback, Schedule, Mode, Temperature Correction, RC Prohibition.

Time and

Schedule

Date and Time Sets the date, time, and display formats. The current time will appear at

the top right corner of the HOME screen. 28

Weekly/One-day

schedule

• Allows the user to set the weekly schedule for each group.

• Maximum of 16 events can be scheduled for each day.

• The types of actions that can be scheduled are as follows: ON/OFF,

Mode, Set Temperature, Fan Speed, Air Direction, and Prohibit

Remote Controller Operation.

• Maximum of 12 patterns can be congured for the weekly schedule,

and 5 for one-day schedule.

• Two types of weekly schedules (Summer/Winter) can be set.

• One-day schedule overrides the weekly schedule.

Setback Control

This function helps keep the indoor temperature in the

temperature range while the units are stopped and during the

time this function is effective.

Disabling scheduled

operation

Scheduled operation can be temporarily disabled.

This setting must be set to OFF to run scheduled operation. 24

System

Management System-Changeover

Automatically switches the entire system (all indoor units that are

connected to the same outdoor units) to cooling or heating by

periodically monitoring the room temperature and the preset temperature

of each group and determining the best operation mode.

• The System-Changeover function is not available for the following

types of products: Simultaneous cooling/heating units (with automatic

mode change function), Mr. SLIM®, LOSSNAY, and DIDO controller.

*1: Available functions vary depending on the unit type. Only the functions that are supported by the connected units can

be controlled from the AT-50B.

Function Description Page

Restriction

Settings

Lock Buttons

Locks the following buttons: Collective ON/OFF, F1, F2, and Main

Menu screen buttons.

Locks the following functions: ON/OFF, Mode, Set Temperature,

Fan Speed, and Schedule ON/OFF.

Set Temperature

Range Limit

Limits the available temperature range for the local remote

controllers (each group or all groups). 46

Prohibit Remote

Controller

Prohibits access to the ON/OFF, Mode, Set Temperature,

Maintenance Sign Reset, Air Direction, and Fan Speed settings

from the local remote controllers, and also deactivates Timer

(Schedule) settings from the local remote controllers (collectively or

by group).

Operation Mode

Selection Limit

When set as the main controller, operation of the following modes

with the local remote controllers can be prohibited.

No Cooling Operation: Cool, Dry, and Auto cannot be chosen.

No Heating Operation: Heat and Auto cannot be chosen.

No Heating/Cooling: Cool, Dry, Heat, and Auto cannot be chosen.

Basic Settings

Display Format

Selects the display formats for the following items: Display

language, temperature unit, room temperature, display or non-

display of Cool/Heat mode icons (during Auto mode), backlight

timer, and group names.

Function Key Setting

The F1 button and the F2 button can be set as a run button of

the following collective operation: Setback, Schedule, Mode,

Temperature Correction, Remote Controller Prohibition.

HOME screen

Group Icon Setting

When the group icon is touched, the action differs depending on

the group icon setting. Default is set to the Group icon setting 2.

Group icon setting 1:

Turns ON/OFF the units in the group whose

group icon is touched.

Group icon setting 2:

Displays the check mark when group icon is

touched. Touch the group icons of the groups

to be operated, and then touch the “Operate”

button to move to the GROUP screen. Multiple

groups can be selected. Use this mode when

operating the multiple groups collectively.

Group icon setting 3:

Directly moves to the GROUP screen of the

group whose group icon is touched.

Volume Control Sets the sound volume and screen brightness. 57

Maintenance

Error

If an error occurs on the AT-50B controller or the units and

controllers it controls, the LED on the Collective ON/OFF button

will blink. If an error occurs on the indoor or LOSSNAY units, will

appear on the corresponding group icon on the HOME screen. The

error code can be veried and reset on the Status List screen.

Maintenance Sign Filter icon will appear on the HOME screen when the lter is due

for cleaning. The icon can be removed from the Status List screen. 60

Touch Panel

Cleaning mode Disables the touch panel to allow the user to clean the panel. 64

Touch Panel

Calibration mode

Calibrates the touch panel if the touch panel does not respond

correctly when touched. 58

Miscellaneous

External input

Receives input signals from external devices and start/stop all

groups of units or permit/prohibit operations from the local remote

controllers. Requires cable connections.

External output

Outputs the operation status of the units (ON/OFF) or error signals

to external devices collectively, using contact signals. Requires

cable connections.

Names and Functions of Controller Components

Product features

The AT-50B described in this manual is a centralized controller with color LCD touch panel for air

conditioning units, LOSSNAY, Air To Water (PWFY)*, and general equipment using the Mitsubishi Electric

DIDO controller (PAC-YG66DCA).

AT-50B can control up to 50 units/50 groups. *1

AT-50B controls and monitors the air conditioning units of each group. AT-50B 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-50B 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-50B 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-50B

A group consists of units (16 units maximum).

* “Booster unit” and “Water HEX unit” are referred to as “Air To Water (PWFY)”.

* AHC (Advanced HVAC CONTROLLER) cannot be controlled from AT-50B.

Buttons 2, 3, and 4have indicators on the top.

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, DIDO controllers, and Air To Water (PWFY) units

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.

AT-50B 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.

1Display/Touch panel

3 Function 1 button (F1), 4Function 2 button (F2) *1 *2

Desired functions from the following list can be assigned to the F1 and F2 buttons.

(Setback/Schedule/Mode/Temperature 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.

Lit : The assigned function is enabled.

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.

5Power indicator

The power indicator lights up when the power to AT-50B is turned on.

Unlit : Power OFF

Lit : Power ON

Touch panel/Buttons

*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.

Screen Configuration [HOME screen]

1. How to switch the HOME screen

Touch tabs to change the display format.

2. How to move to the Main Menu screen

3. How to move to the Maintenance screen

Refer to the Installation Manual.

: Displays the GRID screen.

: Displays the GRID (zoom-out) screen.

: Displays the GRID (zoom-in) screen.

: Displays the LIST screen.

: Displays the GROUP screen.

: Displays the Main Menu screen.

GRID screen

Zoom-out screen

To the GRID

(zoom-in) screen

To the GRID

(zoom-out) screen

Zoom-in screen

HOME screen

To the GROUP screen

To the GRID screen

To the LIST screen

To the GRID screen

To the Main Menu screen

To the HOME screen

GROUP screen

To the LIST

screen

To the GROUP

screen

LIST screen

[Main Menu screen]

Buttons [HOME screen]

①②③󱦯④⑤

⑨⑩⑦⑧ ⑧⑪

⑯⑰⑱

⑮

󱦱

⑥

󱦱

⑪

⑫

⑥

⑭

⑬

⑳

⑲

HOME screen

GRID (zoom-out) screen GRID (zoom-in) screen

Displays the operation status of all groups.

The button layout 6varies with the number of the

registered groups.

Displays the detailed operation status of each

group. (10 groups on 5 pages maximum)

LIST screen GROUP screen

Displays the detailed operation status of each

group with group name. (5 groups on 10 pages

maximum)

Displays the detailed operation status of each

group. Sets group operations.

(When the air conditioning units or Air To Water

(PWFY) units are controlled)

Note: Display ⑨and ⑩vary depending on the Group icon

setting. Refer to P17 “Group icon setting” for details.

Sample displays above are for default setting: Group

icon setting 2.

Group icon setting 1

Group icon setting 2

Group icon setting 3

LOSSNAY

Air conditioning units

Auto (dual set point)

mode

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