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Mitsubishi Electric AT-50B Instruction Book

Air-conditioner control system, advanced touch controller.
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Air-conditioner Control System
Advanced Touch Controller
MODEL
AT-50B
Instruction Book
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.
Safety Precautions .............................................................. 2
Function List ........................................................................ 4
Screen Configuration [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
ON/OFF operation ........................................................................ 18
Mode ............................................................................................. 18
Temperature setting ...................................................................... 21
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

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Table of Contents

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   Summary of Contents for Mitsubishi Electric AT-50B

  • Page 1: Table Of Contents

    <ORIGINAL> 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 Configuration [HOME screen] ......... 8 Buttons [HOME screen] ............. 10 Icon Displays [HOME screen]..........12 Basic Operations ...............
  • Page 2: Safety Precautions

    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 qualified personnel.
  • Page 3 To clean the controller, wipe with a soft cloth soaked in mild detergent that is diluted AT-50B is designed for exclusive use with the Building with an appropriate amount of water, and wipe down with a Management System by Mitsubishi Electric.
  • Page 4: Function List

    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 Switches the ON/OFF operation of the units such as air conditioning ON/OFF operation 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.
  • Page 5 Volume Control Sets the sound volume and screen brightness. 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,...
  • Page 6: Names And Functions Of Controller Components

    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).
  • Page 7 Touch panel/Buttons 1 Display/Touch panel 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.
  • Page 8: Screen Configuration [home Screen]

    Screen Configuration [HOME screen] GRID screen 1. How to switch the HOME screen Touch tabs to change the display format. Zoom-out screen : Displays the GRID screen. : Displays the GRID (zoom-out) screen. : Displays the GRID (zoom-in) screen. : Displays the LIST screen. : Displays the GROUP screen.
  • Page 9 HOME screen GROUP screen To the GROUP screen To the GRID screen To the GROUP To the LIST screen screen LIST screen To the LIST screen To the GRID screen [Main Menu screen] To the Main Menu screen To the HOME screen...
  • Page 10: Buttons [home Screen]

    Buttons [HOME screen] HOME screen GRID (zoom-out) screen GRID (zoom-in) screen Displays the operation status of all groups. Displays the detailed operation status of each The button layout 6 varies with the number of the group. (10 groups on 5 pages maximum) registered groups.
  • Page 11 Displays the current page/total page number. Note : Depending on the units to be controlled and AT-50B settings, available button operations and displays vary. : While the icon is displayed on the button, the operation is locked.
  • Page 12: Icon Displays [home Screen]

    Icon Displays [HOME screen] (1) GRID (zoom-out) screen [ON (BG Color: blue)] Group No. •Check Water sign**: * For Air conditioning units •Filter sign* ** For Air To Water (PWFY) units •Check mark [OFF (BG Color: black)] [Error (BG Color: yellow)] Error display Communication error at startup...
  • Page 13 (3) LIST screen Display selection button Display selection button [Air conditionoing unit group] [ON (BG Color: blue)] [OFF (BG Color: black)] [ON (BG Color: blue)] [OFF (BG Color: black)] Group No. Room (Group) name Schedule (enable/disable) Schedule (enable/disable) Interlocked ventilation (LOSSNAY) operation** Room Room Interlocked...
  • Page 14 Icon Displays [HOME screen] GROUP screen [Air conditioning unit group • Air To Water (PWFY) group] Group name During operation Group No. Mode Room temperature* Error Water temperature** Unit icon Startup (communication) error Set temperature Filter sign* Check Water sign** Energy-saving Scheduled operation/ Disabled...
  • Page 15 [LOSSNAY group] During operation While the unit is stopped Fan speed display [General equipment group] During operation While the unit is stopped General equipment icon Water temperature: When the Temperature Correction function is Display ranges 0-93ºC (32-199ºF). When enabled: the temperature is beyond the range, 0ºC When the Temperature Correction function is (32ºF) or 93ºC (199ºF) will blink on the enabled, the corrected temperature will appear...
  • Page 16: Basic Operations

    Basic Operations Screen selection GRID (zoom-out) screen appears at the initial startup. Select the desired screen. GRID (zoom-out) screen When the system contains 25 groups or more, the GRID (zoom-out) screen is as shown above. LIST screen GRID (zoom-in) screen...
  • Page 17: Group Selection

    Stops or starts the operation of the air conditioning units through group icon 1. * ON/OFF operation lock When AT-50B restricts its own ON/OFF operation, the icon above will appear. The ON/OFF operation will be disabled. * During receiving the external input signal The ON/OFF button cannot be operated in the following situations.
  • Page 18: Operation Screen (group Screen)

    Basic Operations Operation Screen (GROUP screen) Operating the air conditioning unit group • Air To Water (PWFY) group Basic operations (GROUP screen) Air conditioning unit group Air To Water (PWFY) group ON/OFF operation Touching 3 allows the indoor units in the displayed group to start/stop. When interlocked ventilation units (LOSSNAY) are connected, the ventilation units work in conjunction with indoor units.
  • Page 19 Auto (dual set point) mode: When the operation mode is set to the Auto (dual set point) mode, two set temperatures (one each for cooling and heating) can be set. Depending on the room temperature, indoor unit will automatically operate in either the cooling or heating mode and keep the room temperature within the preset range.
  • Page 20 Collective Operation Panel This panel has the functions that can be executed collectively. (Setback, Schedule, Mode, Indicator Temperature Correction, RC Prohibition) Function Touching the icon at the left bottom of the icon on the GRID or the LIST screen will bring up the Collective Operation panel.
  • Page 21: Temperature Setting

    Basic Operations Checking the status of the collective operation functions 1 On the GRID or the LIST screen, touch the button that brings up the Collective Operation panel. 2 Check the color of the indicator on the Collective Operation button. (Yellow) : The function is enabled.
  • Page 22 Set temperature range Air conditioning unit group (* When Fan mode is selected, the temperature setting cannot be made.) Operation mode Set temperature range Cool/Dry 19ºC–35ºC/67ºF–95ºF Heat 4.5ºC–28ºC/40ºF–83ºF Auto (single set point) 19ºC–28ºC/67ºF–83ºF *1*2 Auto (dual set points) Cool: Same as the set temperature range for Cool mode Heat: Same as the set temperature range for Heat mode *2*3*4 Not settable...
  • Page 23: Interlocked Ventilation Units(lossnay)/fan Speed/air Direction/louver Settings

    Interlocked ventilation units (LOSSNAY)/ Fan speed/Air direction/Louver settings (for air conditioning unit groups only) Touch 4 to show the Interlocked ventilation units (LOSSNAY)/Fan speed/Air direction/ Louver settings screen. A Interlocked ventilation units (LOSSNAY) * This setting appears only when interlocked ventilation unit is connected. Stop High B Fan speed...
  • Page 24: Disable-scheduled-operation Button

    Basic Operations Disable-Scheduled-Operation button The Disable-Scheduled-Operation function is ON. The Disable-Scheduled-Operation function is OFF. Use button 5 (P18) to temporarily disable the scheduled operation. When the function is enabled, the indicator on button 5 will light up in yellow. When this function is enabled, the icon will appear on the screen, and the scheduled operation will not run.
  • Page 25: Multiple Group Selection Screen

    (The buttons may not be disabled depending on the models of the connected indoor unit, controllers, and remote controllers.) If the AT-50B denies other controllers access to itself (or the "Operation Prohibition Setting" is set to "Enabled"), other controllers cannot disable the functions on the AT-50B.
  • Page 26: Menu Screen

    Menu Screen The Main Menu screen allows the user to configure the basic settings. To access the Main Menu screen, touch the icon at the right top corner of the HOME screen or the menu screens. Main Menu screen (Top screen) 1 HOME button Accesses the HOME screen.
  • Page 27 * Three setting options are available. 2 Restriction Settings (1) Lock Buttons Locks the buttons and the functions on the AT-50B. (2) Set Temperature Range Limit Sets the temperature range for the local remote controllers. (3) Prohibit Remote Controller Prohibits access to the ON/OFF, Mode, Set Temperature,...
  • Page 28: Usage - Main Menu Settings

    Usage - Main Menu Settings Operation Setting Main Menu > Operation Setting Main Menu > Operation Setting > Time and Schedule Time and Schedule Main Menu > Operation Setting > Time and Schedule > Date and Time Setting the date, time, and display format Date tab Time tab...
  • Page 29 Service Menu, the daylight saving time function is not available. [Note] Set the "Clock setting signal" setting to "OFF" if the AT-50B is used as a sub controller, or other controllers periodically issuing a time alarm exist on the same M-NET. If two or more controllers issuing a time alarm exist on...
  • Page 30 Usage - Main Menu Settings Operation Setting (cont'd) Main Menu > Operation Setting > Time and Schedule > Set Schedules Setting the operation schedule Types of schedules Number of operation patterns Use to assign an operation pattern for each day of the week to be Weekly Maximum 12 patterns executed every week.
  • Page 31 Schedule Setting Procedures 1. Touch the “Set Schedules” button on the [Time and Schedule] screen to access the Group-and-day/ date-selection screen. When the selected groups include two or more unit types (e.g. “air conditioners and ventilators” or “general equipment and Air To Water (PWFY)”), the [Target group selection] screen shown on the right appears before the [Set Schedules] screen appears.
  • Page 32 Usage - Main Menu Settings Operation Setting (cont'd) 3. Select the cell where a specific group and a day (date) intersect to assign a pattern. * Patterns can be copied, pasted, or deleted on the Group-and-day/date-selection screen. e.g., The weekly schedule of a specific group can be copied and pasted to another group, or the schedule pattern of a specific day can be copied and pasted to another day.
  • Page 33 ② To copy an existing pattern and paste it to selected days or dates Touch a pattern number to select it, then touch the OK button to return to the Group-and-day/date- selection screen. To set the schedule for other groups or days/date ⇒ See Step 2. When setting is complete ⇒...
  • Page 34 Usage - Main Menu Settings Operation Setting (cont'd) 6. Set the time and the actions for the selected event number. Change values with the buttons. Touch the icons repeatedly to select the desired one. Auto dual set point ) mode Cooling set temperature Heating set temperature * Functions that can be included in each event are as follows: Execution Time, ON/OFF, Mode, Fan...
  • Page 35 Copying and pasting the existing settings 1. Touch the item to be copied. * Items that can be copied include the weekly schedule for a group, the pattern assigned to a specific day, or the event that is scheduled to take place at a certain time. * A red checkmark will appear on the selected item(s).
  • Page 36 Usage - Main Menu Settings Operation Setting (cont'd) Inserting an event 1. Touch a row to insert an event above it. * A red checkmark will appear on the selected row. 2. Touch the Insert button. A blank row will appear above the selected row. * If the maximum number of events have been set, no more rows can be inserted.
  • Page 37 Main Menu > Operation Setting > Time and Schedule > Setback Control Setting the Night Setback function Night Setback function (hereafter abbreviated as Setback) is a function that prevents indoor dew or extreme temperature rise by heating/cooling automatically when the room temperature goes outside of the specific range during the set time period.
  • Page 38 Usage - Main Menu Settings Operation Setting (cont'd) 3. Press button 1 to bring up the screen to set the control time period and the lower/upper limit temperatures. Setting of Setback control time period Touch the 2 buttons to set the control time. Setting of lower/upper limit temperature Touch the 3 buttons to set the upper and lower limits.
  • Page 39 Main Menu > Operation Setting > Time and Schedule > Check Current Settings Checking the weekly/one-day schedule settings When the selected groups include two or more unit types (e.g. “air conditioners and ventilators” or “general equipment and Air To Water (PWFY)”), the [Target group selection] screen shown on the right appears before the [Check Current Settings] screen appears.
  • Page 40 Usage - Main Menu Settings Operation Setting (cont'd) Main Menu > Operation Setting Main Menu > Operation Setting > Collective Operation Setting 2Setting the collective operation settings ・ When appears on the “RC Prohibition” button, this function will not be available. To select the groups on which to execute the collective ON/OFF function 1.
  • Page 41 To select the groups on which to execute the collective operation (Enable or disable the Setback function) 1. Touch the 2 Setback button on the [Collective Operation Setting] screen. 2. Read the pop-up message, and touch the OK button to confirm. 3.
  • Page 42 Usage - Main Menu Settings Operation Setting (cont'd) To select the groups on which to execute the collective operation (Mode) Show Group Name List button 1. Touch the 4 Mode button on the [Collective Shows a list of group names in a pop-up window. Operation Setting] screen.
  • Page 43 To select the groups on which to execute the collective operation (Locking or unlocking access to the setting items in the table below from the local and other system controllers) 1. Touch the 6 RC Prohibition button on the Show Group Name List button [Collective Operation Setting] screen.
  • Page 44: Restriction Settings

    Usage - Main Menu Settings Restriction Settings Main Menu > Restriction Settings Main Menu > Restriction Settings > Lock Buttons 1Selecting the functions to be locked and setting the password to unlock the locked functions Selecting the functions to be locked Category button Enable/Disable Lock button Use these buttons to select the...
  • Page 45 Setting the unlock password 1. Touch the 1 Lock Buttons button on the [Restriction Settings] screen. 2. Enter the password on the [Login Page] screen, and touch the Login button. Refer to below for the details on log in. If the correct password is entered, the [Lock Buttons] screen will appear.
  • Page 46 Usage - Main Menu Settings Restriction Settings (cont'd) Main Menu > Restriction Settings Main Menu > Restriction Settings > Set Temperature Range Limit 2Setting the temperature ranges within which the operating temperatures can be set from the local remote controllers Show Group Name List button Edit button Displays a list of group...
  • Page 47 ® the AT-50B. Use the button lock function on the controllers instead. • If the temperature limits are set too high or low, the System-Changeover function may not work properly and the units may not operate in the expected mode (Cool or Heat).
  • Page 48 Usage - Main Menu Settings Restriction Settings (cont'd) Main Menu > Restriction Settings In the following situation, will appear on the Prohibit Remote Controller button, and this function is not available for selection: • The "Operation Prohibition Setting" is set to “Disabled.” Main Menu >...
  • Page 49 (The mark will appear or disappear.) • When this function is in use (or the "Operation Prohibition Setting" is set to "Enabled"), the buttons on AT-50B cannot be disabled from the system controller.
  • Page 50 Operation Mode Selection Limit button, and this function is not available for selection: • The AT-50B is set as a sub controller. • The System-Changeover function is available. Main Menu > Restriction Settings> Operation Mode Selection Limit...
  • Page 51 Explanation 1Button No Limitation The limits will be cancelled. No Cooling Operation Cool, Dry, and Auto modes cannot be selected with the Mode button. No Heating Operation Heat and Auto modes cannot be selected with the Mode button. No Heating/Cooling Cool, Dry, Heat, and Auto modes cannot be selected with the Mode button.
  • Page 52: Control Panel

    Usage - Main Menu Settings Control Panel Main Menu > Control Panel Main Menu > Control Panel > Display Format 1Setting the basic display settings on the HOME and menu screens Touch the 1 Display Format button on the [Control Panel] screen. •...
  • Page 53 To show or hide the room temperature Touch the Room Temperature button on the [Display Format] screen (1/3) to switch between Show and Hide. [Display Format] screen 2/3 To show or hide the Cool/Heat mode icon (during Auto mode) when the operation mode is enabled Touch the Automatic Mode Display Setting button to switch between Show (...
  • Page 54 Usage - Main Menu Settings Control Panel (cont'd) Main Menu > Control Panel Main Menu > Control Panel > Display Format [Display Format] screen : 3/3 Group Name Setting screen To change the group name 1. Touch the 0 Jump to the group name setting screen button on the [Display Format] screen (3/3). 2.
  • Page 55 Character input screen To enter character strings such as group names (maximum 16 characters), perform the following procedure. To enter a character string 1. Touch 1 , or to select upper case alphabets, lower case alphabets, or numerical and other symbols. 2.
  • Page 56 Usage - Main Menu Settings Control Panel (cont'd) Main Menu > Control Panel Main Menu > Control Panel > Function Key Setting 2Assigning Collective Operation functions to the Function 1 button (F1) and Function 2 button (F2) Touch the 2 Function Key Setting button on the [Control Panel] screen. 1.
  • Page 57 Main Menu > Control Panel Main Menu > Control Panel > Volume Control 3Adjusting the volume and brightness Touch the 3 Volume Control button on the [Control Panel] screen. To adjust the volume 1. Touch the 1 Sound button on the [Volume Control] screen. Every time the 1 Sound button is touched, the sound level changes as follows: [Level 0] →...
  • Page 58 Usage - Main Menu Settings Control Panel (cont'd) Main Menu > Control Panel > Touch Panel Calibration 4Calibrating the touch panel 1. Touch the 4 Touch Panel Calibration button on the [Control Panel] screen. Touch the OK button on the confirmation screen. 2.
  • Page 59: System Management

    System Management Main Menu > System Management Main Menu > System Management > Status List 1Checking or resetting the Error or the Maintenance Sign Touch the 1 Status List button on the [System Management] screen. Error source address Displays the M-NET address of the units whose Error/Filter Number of errors signs are turned on.
  • Page 60 Usage - Main Menu Settings System Management (cont'd) Number of maintenance signs detected Displays the number of maintenance signs that have been detected. To check the information about the units whose maintenance signs are turned on 1. Touch the 3 [Maintenance Sign] tab, and check the number of units whose maintenance signs are turned on, the names of the groups they belong to, and their addresses.
  • Page 61 System-Changeover button, and this function is not available for selection: • The AT-50B is set as a sub controller. • The changeover limit function of the operation mode is available. Main Menu > System Management > System-Changeover...
  • Page 62 Block No. Displays the block number. All units in each group are operated in the same operation mode. The AT-50B automatically creates Group list blocks based on the refrigerant pipe connection information and Displays the number assigned to the indoor unit groups that are connected to the the group setting information on outdoor units in a specific block.
  • Page 63 The System-Changeover function operates depending on whether the group supports the Auto (dual set point) mode or not. 1) Groups not supporting the Auto (dual set point) mode Mode change (Heat→Cool) 1.5ºC Cooling operation Set temperature 24ºC Heating operation 1.5ºC Mode change (Cool→Heat) Summer Winter...
  • Page 64: Maintenance

    Maintenance Touch Panel Cleaning screen To clean the touch panel This screen allows the user to wipe the touch screen without accidentally changing the settings. 1. Touch the icon on the Main Menu screen to bring up the screen shown above. 2.
  • Page 65: Troubleshooting

    If the external input interface receives an emergency stop signal, all indoor units, LOSSNAY, and Air To Water (PWFY) units that are controlled by the AT-50B will stop. The AT-50B controller, low-level system controllers, or local remote controllers will not respond until the emergency stop signal input is removed.
  • Page 66 30VDC Power source cable or from outdoor units via the M-NET transmission cable. (for connection to M-NET only) The power consumption coefficient of AT-50B is “4.” Operating temperature range 0 - 40˚C [32˚F - 104˚F] Temperature Operating conditions Storage temperature range -20 - +70˚C [-4˚F - +158˚F]...
  • Page 67 • Satın almış olduğunuz ürünün kullanım ömrü 10 yıldır. Bu, ürünün fonksiyonunu yerine getirebilmesi için gerekli yedek parça bulundurma süresidir. Ürünün montajı için Mitsubishi Electric Turkey Elektrik Ürünleri A.Ş. yetkili servisine / bayisine başvurunuz. Servis İstasyonları ve Yedek Parça Temini : Cihazınızın bakım, onarım ve yedek parça ihtiyaçları...
  • Page 68 This product at hand is based on the following EU regulations: • Electromagnetic Compatibility Directive 2014/30/EU • Restriction of Hazardous Substances 2011/65/EU HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN MANUFACTURER: MITSUBISHI ELECTRIC CORPORATION Air-conditioning & Refrigeration Systems Works 5-66, Tebira 6 Chome, Wakayama-city, 640-8686, Japan WT06980X04...

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