Mitsubishi Electric Air-conditioner Network System Central Controller Model: G-50A Instruction Book Contents ON/OFF CENTRAL CONTROLLER G-50A 1. 2. 3. Safety precautions ...................................................... 1 Product features ......................................................... 2 Functions .................................................................... 4 3-1 Specifications .................................................. 4 3-2 Display Screen ...............................
1. Safety precautions Before using the controller, read the Safety Precautions section carefully to ensure proper operation. These safety precautions must be observed by anyone who operates the central controller at all times. Keep this Instruction Book and Installation Manual for future reference. Make sure both this Instruction Book and the Installation Manual are given to the next user.
2. Product features The central controller is capable of controlling up to 50*1 air conditioner units. It supports the following functions. (*1: The maximum number of connectible units depends on the indoor unit models.) [1] User operation functions (1) Operation 1. Most of the functions of the local remote controllers are supported by the central controller.
2. Each group can be specified by its name. (Alphanumerical characters can be used for the group name.) 3. Group names can be copied to the settings for the other groups. 4. The group configuration settings and the group names can be set as long as power is supplied to the central controller, even if indoor units have not been connected. 5. When the system configuration was changed, the system configuration data on the central controller can be erased all at once if necessary.
3. Functions 3 - 1 Specifications Item Specification Source power requirement Environmental condition Dimensions Weight Input voltage DC24V, 0.02A (Maximum loading) Power received from PAC-SC50KUA Power Supply Unit via M-NET transmission line, or from an R410A compatible CITY MULTI outdoor unit (except the S Series). *Note: While the power to the connected outdoor unit is turned off, the G-50A cannot perform a schedule operation, collect charge data, or perform energy save control. DC12V, 0.
Item Prohibit local remote control Operation Timer operation Filter sign reset Ventilation operation *1 Monitor Collective operation Each group operation Operation mode Fan speed Air direction Temperature setting Timer operation Filter sign Local remote control prohibition Ventilation operation Room temperature display Central control prohibition External input signal condition Malfunction Current time back-up Other Timer setting Specification The specific functions of a local remote controller can b
Item Specification Group name Group name can be specified and display on the operation setting screen. designation * Group name setting is need at the initial setting. External Emergency stop/normal, ON/OFF, prohibit/permit for local remote operation can be consignal input trolled for units being controlled with a non-voltage contact signal input from an external Other interface source.
NOTE: The following group setting cannot be performed. • Unit groups which are not under the management of the main controller and are managed by the sub system controller. Main system controller Group Sub system controller Group Group • A common group is managed by more than two main controllers. Main system controller 1 Group Main system controller 2 Group Group • A sub system controller which exceeds the management range of the main system controller of two or more.
3 - 2 Display Screen Operation setting function Overall status lamp The lamp indicates the unit operation condition. ON......During operation OFF......All group are stopping BLINKING......Malfunction Operation monitor function Display 02 01 PROHI BITED Each operation and monitor of unit is performed in collective or group unit. Refer to section "4. User operation (page 10)" for the detail of operation methods. ON/OFF operation and monitor of unit are performed. Refer to section "4.
Collective operation switch If this switch is pressed during the operation, a whole group stop is performed. The collective operation switch can be performed in the user setting mode for any screen. (Excluding menu screen) LAN changeover switch Refer to section "5. Initial setting (page 25)" for explanation of the operation of these switches. LCD contrast adjustment knob LAN status lamp Orange LED indicates action and green LED indicates link. Service LAN connector Refer to section "5.
4. User operation Used the following two screens when user operation is performed. Operation monitor screen ........ This screen displays ON/OFF and malfunction condition of unit. G-50A normally displays this screen. Operation setting screen .......... The unit operations can be performed by individual group or collective operation.
4 - 1 Operation condition monitor • This function displays the ON/OFF/Malfunction status of specific units or group. • ON/OFF/Malfunction status is shown by the indication corresponding to the unit or group appearing in inverse, normal or blinking display. • The user may select display items by unit address, group number or group name. Refer to section "5-7 User setting (page 34)" for detail of user setting.
4 - 2 Operation setting • There are two methods for the operation, performing the operation classified by groups or collective operation.
Operation panel 2 Operation mode switch A Group select switch 3 Fan speed switch 1 ON/OFF switch 6 Air direction setting switch 4 Temperature setting switch B Back screen switch 5 Current time setting switch C Cursor position movement switch 8 Remote operation prohibit switch 9 Timer mode switch 7 Ventilation setting switch No. Name of switches Function Current time These switches are used when the cur5 setting switch rent time is set.
(1) Local remote control operation prohibition setting • G-50A can prohibit the operation of item such as connected local remote controller or sub system controller for each group. The prohibit items are ON/OFF operation, operation mode, temperature setting and filter sign reset operation. GROUP switch to display the group that the operation pro1 Press the SELECT hibition setting will be performed. 2 Press the or switch to set "PROH. (PROHIBIT)" on the blinking display and press switch.
(2) G-50A operation prohibition • The operation of this controller is prohibited when an operation prohibition setting for this controller is received from a system controller other than this controller or when an external input signal is used. PROHI- The BITED is displayed and the prohibition operation is display in reverse display when operation of this controller is prohibited by another system controller or an external input signal used.
4 - 2 - 2 Collective operation setting • A collective operation setting and a collective prohibit setting can be performed for all the group managed by this controller at one time. (1) Collective operation setting 1 Press the switch to set "COL. (COLLECTIVE)" in blinking display and press the switch on the group operation setting screen. ENTER 2 The collective operation setting initial screen is displayed. 3 Select the items for operation setting on the collective operation setting initial screen.
(2) Collective prohibit setting 1 Press the play and press the screen. switch to set "PROH. (PROHIBIT)" in blinking disswitch on the collective operation setting initial ENTER 2 The collective prohibit setting initial screen is displayed. 3 Select the items to be prohibited or permitted on the collective prohibit setting initial screen. Each time to press the switch corresponding to the prohibition item, the prohibition or permission is selected.
9 The collective operation setting initial screen is displayed. 0 Press the REMOTE PROHIBITION 0 switch to set "REMOTE CONTROL [PROHIBIT]". ARemote operation prohibition/permission display ("REMOTE CONTROL [PROHIBIT]") is displayed with blinking. BPress the or switch to display the "SET" in blinking display for the indicated function area. Press the switch one time to complete the collective prohibit setting. ENTER C The collective prohibit setting is executed. It takes approximately 20 seconds.
4 - 3 Timer operation • A weekly schedule setting can be specified for each group. • Possible to set on the timer the schedule to prohibit operation of the local remote controller in addition to ON/OFF schedule. NOTE: • Always set to current time on the current time setting screen when the schedule setting is performed. Refer to section "4-5 Current time setting". • To perform a scheduled operation, make the settings that are explained under items (1) (p.20), (2) and (3) (p.
(1) Schedule pattern (P1~P3) setting • Follow the procedures described below to set each daily schedule pattern for each group. • The setting temperature or set-back values setting are also performed in the schedule setting operation. To enter the setting temperature or set-back value setting select SET-BACK or SET TEMP. Accordance with section "5-7 User setting (page 34)" in advance. • The setting temperature or set-back value selected in this way take effect only during timer operation.
(2) Set-back values and setting temperature setting • Setting the set-back values and setting temperature can be performed only when selecting either "SET BACK" or "SET TEMP" on the user setting screen in the initial setting mode. • Set-back operation Set-back operation is a method which reduces the air conditioner running cost by controlling the operation with specified time band for lowered load.
3 Press the or (-). / 5 8 (CLOCK/PATTERN) switch to select P1 to P4 switch one time to complete the setting. (The cursor will 4 Press the move to the next setting position.) ENTER 5 Repeat operations 3 and 4 to assign the schedule pattern to each day. NOTE: When the No.4 function setting is set ON, P4 cannot be set.
4 - 4 Malfunction • The malfunction monitor function is used for conforming to the details of the malfunction condition when a malfunction is displayed on the operation monitor screen. • The malfunction monitor function can display data describing up to nine malfunctions in the address number sequence on one page. This data contains the unit address where the malfunction occurred, the error code and the unit address where the malfunction was detected.
4 - 5 Current time setting The current time, day, month and year are set on the current time setting screen. < Shifting to the current time setting screen > User operation menu BACK SCREEN Press the 5 switch to select "5 CURRENT TIME SETTING". Press the switch to back to the user operation menu. 04-2002 MON Current time setting screen (DAY-MONTH-YEAR) 1Press the 8 2Press the 5 day that is displayed. -2002 MON (DAY-MONTH-YEAR) switch to move the cursor position to be set.
5. Initial setting 5 - 1 Shifting to initial setting menu • Shift to the initial setting menu by continuously pressing + (2 seconds or longer) on the user operation menu screen. (Refer to section "3-2".) Shift to the user operation menu by continuously pressing + (2 seconds or longer) on the initial setting screen. (Refer to section "3-2".) • When group information is not saved, the following initial setting screen is displayed when power is turned on at this controller.
5 - 3 Function setting • The functions of this controller are set according to the function settings. • The functions selects are set to OFF when the controller is shipped from the factory. (1) Select 7 "7 FUNCTION SETTING" (or 2 "2 FUNCTION SETTING"). (2) Switch the function by pressing the function No. you want to change, or the 1 to 8 switch of the same number. Each time the switch is pressed, the ON/OFF state of that No. is switched. (NO. 1 and NO. 2 cannot be changed.
5 - 4 Group configuration setting • Registration can be made for the indoor units, local remote controllers and sub system controllers in the same group. • Registration can be also performed for the group which is composed of only OA processing unit or LOSSNAY.
Set all the units and controllers to be registered in the displayed group number. 6Repeat operation 3 to 5 to set all groups managed by this controller. 7When all setting are completed, press the NOTE: MENU Additions WED 15:29 switch. • When there are M-NET local remote controllers in the system, always be sure to set the local remote controller address. The local remote controller will not operate if the address setting is not performed.
5 - 5 Interlocked operation setting • Registration of interlocked operation of Ventilation unit (OA processing unit and LOSSNAY) with single or multiple indoor unit is performed. All indoor units to be interlocked with ventilation unit for operation should be registered for the interlocking with ventilation unit.
6Used the numeric keypad switch to set the address of the indoor unit that operates with displayed interlocked OA processing unit or LOSSNAY. When the indoor unit which address is 012. 1) Input "0" 0 2) Input "1" 01 3) Input "2" 012 4) Press the switch 012 * It is also possible just enter "1" "2". Before pressing switch, continue to input the data. After pressing switch, move the cursor to the address to be deleted and press the DEL.
5 - 6 Group name setting (1) Setting method • Specify new group name. • Either alphabet, numeric characters, hyphens or spaces can be used for name setting. • Maximum of ten characters can be set. • When the group name is displayed on the operation monitor screen, the first three characters of the group name are displayed. 1Press the 1 (or 4 ) switch to select "1 GROUP SETTING" (or "4 GROUP SETTING") of the initial setting menu. 2The group configuration setting screen is displayed.
9When the group name setting is completed, press the BACK SCREEN switch. The group configuration setting screen is displayed. 0Repeat operation 3 to 9 and perform the group name setting for each group. AWhen all the group name settings are complete, press the BACK SCREEN switch. BThe initial setting menu screen is displayed. To perform the setting, refer to section "5-7 User setting (page 34)".
(2) Group name copy • A certain group name can be copied to another group. (This method use the "M" (memory) and "MR" (memory read) functions.) • It is convenient to use a group name for other groups because a group name that was copied can also be corrected. GROUP switch to display the original group on the group 1Press the SELECT name setting screen. 2Press the 3Press the switch to move the cursor to "M". ENTER switch one time to record the setting name in memory.
5 - 7 User setting • To match the needs for the user this menu is to specify some of the indications and functions that appear on the user operating screen. 1Press the 5 switch to select "5 USER SETTING" on the initial setting menu screen. NEXT The user setting screen is displayed. 2Press the switch to select the items to be set. 3When all the selection are completed, press the the initial setting menu screen. 7 BACK SCREEN switch to return to TEMP.
5 - 8 IP address setting • This function allows setting of the IP address and mask address needed at LAN connection. 1Select the 6 switch select "8 IP ADDRESS SETTING" on the initial setting menu screen. MENU 6 ADDRESS SETTING 7 FUNCTION SETTING 8 IP ADDRESS SETTING The IP address setting screen appears. IP ADDRESS SETTING 2Move the cursor to the address setting position by pressing the and keys. IP ADDRESS: 192.168.001.001 , , 3Set the address with the 0 to 9 numeric switches. SUBNET MASK: 255.
6. Maintenance 6 - 1 Refrigerant system monitor • This function allows monitoring of the address of the outdoor units, and BC controller connected to the refrigerant system. It is useful for checking address settings, transmission line connection during installation. 1Press the 3 switch to select "3 REFRIGERANT MONITOR" on the initial setting menu screen. NEXT The process for monitoring of the refrigerant system is executed. Please wait.
6 - 2 Malfunction log monitor • This function allows monitoring of a log of the last 64 malfunctions. • The contents of malfunction and time the malfunction occurred is displayed. The contents of malfunction is the address of the unit where it occurred, the error code and the address of the unit that detected the malfunction. • This data are remains in the memory even if supplied power is cut off. • The malfunction log data can be deleted using the malfunction log reset operation.
7. External input/output function * External signal input requires the external I/O adapter (Model: PAC-YG10HA-E) sold separately. * Refer to Instalation Manual for detail. 7 - 1 External input function (1) The function of external input • Emergency stop/normal, run/stop and prohibit/enable of local remote controller operation can be controlled for all air conditioners by using a voltage (DC12V or DC24V) contact signal from an external source. (Select with the function select setting.) No.
(B) Pulse signal 1Even if the ON signal is input during ON, the status will remain at the ON status. 2When the local remote controller is prohibited, the ON/OFF operation, operation mode selection and temperature setting from the local remote controller is prohibited. 3Set the pulse width (contact ON time) to 0.5 to 1.0 second. 7 - 2 External output function (1)The function of external output •The "ON" signal is output when one or more air conditioner are in the ON operation.
Appendix 1: Initial setting (abridged) Initial setting list Power on Displaying for a maximum of 7 minutes. * User operation There is group information. There is no group information. Group information modification and settings modification Continuously press and (2 seconds or longer) Setting end Setting items Menu items screen Group configuration setting ... This performs the same group setting. : Select the group number. : Move the cursor to address display position.
Interlocked setting INTERLOCKED SETTING INTERLOCKED UNIT ADDRESS … Registration of interlocked operation of ventilation unit with single or multiple indoor unit is performed. GROUP • : Select the address number of the interlocked SELECT OA processor unit or LOSSNAY. 005 UNIT ADDRESS • : Move the cursor to address display position. • Numeric keypad : Set the address of the indoor unit. User setting USER SETTING 1 2 3 4 5 6 7 … Select the display method and timer settings. : Select the items.
Appendix 2: User operation (abridged) Shows the operation panel, screen, etc. for user operation. Overall status lamp ON ...During operation OFF ...All group are stopping BLINKING ...Malfunction Collective operation switch Operation panel 2 Operation mode switch A Group select switch 3 Fan speed switch 6 Air direction setting switch 1 ON/OFF switch ON/OFF TEST RUN ON/OFF MODE 1 2 FAN SPEED 3 4 AIR DIRECTION 6 5 TEMP.
Weekly schedule setting screen Change the display group. Move the cursor to the pattern position. Select P1 to P4 or (-) Complete the setting. The cursor will move to the next setting position. * Repeat assign the schedule pattern to each day (and each group) NOTE: When the No.4 function select is set ON, P4 cannot be set. C Cursor position movement switch EN * to of a composite pattern composed of P1 to P3 and P4. P1 ~ P4 3 Move the cursor position.
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This product is designed and intended for use in the residential, commercial and light -industrial environment. The product at hand is based on the following EU regulations: • Low Voltage Directive 73/23/EEC • Electromagnetic Compatibility Directive 89/ 336/EEC NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
