Mitsubishi Electric Air-conditioner Network System Central Controller Model: G-50A Instruction Book Contents ON/OFF CENTRAL CONTROLLER G-50A Safety …………………………………………… Product feature ………………………………… Function ………………………………………… 3-1 Specification …………………………… 3-2 Display screen ………………………… User operation ………………………………… 4-1 Operation condition monitor …………… 4-2 Operation setting ……………………… 4-2-1 Group operation setting ………… 4-2-2 Collective operation setting ……… 4-3 Timer operation ………………………… 4-4 Malfunction ……………
1 . SAFETY Please take a moment to review these safety precautions. They are provided for your protection and to prevent damage to the controller. This safety information applies to all operators and service personnal. After you have read this manual, always observe the procedures described in the explanations and store it with the installation manual in a location that is easy to find. If the controller is going to be operated by another person, make sure that this manual is given to them.
2 . Product Features The central controller is capable of controlling up to 50 air conditioner units. It supports the following operating function. [ 1 ] User operating function (1) Operation 1. Virtually almost functions operated by local remote controller are supported.
[ 2 ] System configuration setup and maintenance function (1) Setup for system configuration 1. Registration can be made for the indoor units, local remote controllers and slave system controllers in the same group. And also registration can be made for the ventilation such as OA processing unit. 2. Group name may be specified. ( Names may include alphanumeric characters.) 3. Group name may be copied. 4.
3 . Functions 3-1 Specifications Item Source power requirement Environmental condition Specification DC24V,0.02A(Maximum loading) Input voltage Power received from PAC-SC50KUA Power Supply Unit via M-NET transmission line. DC12V,0.2A(Maximum loading) Power is received from the PAC-SC50KUA Power Supply Unit via the DC power line.
Item Prohibit local remote control Operation Timer operation Specification The specific functions of a local remote controller can be prohibited as a collective or per group. [Prohibit function] ON/OFF operation, Operation mode setting, Temperature setting and Filter sign reset operation. The set schedule operations can be switched to ON/OFF (local remote controller operation prohibition/permission) for each group.
Item Specification Group name designation Group name can be specified and display on the operation setting screen. * Group name setting is need at the initial setting. Emergency stop/normal, ON/OFF, prohibit/permit for local remote operation can be External controlled for units being controlled with a non-voltage contact signal input from an signal input Other external source.
NOTE : The following group setting cannot be performed. • Unit groups which are not under the management of the master controller and are managed by the slave system controller. Master system controller Group Slave system controller Group Group • A common group is managed by more than two master controllers. Master system controller 1 Group Master system controller 2 Group Group • A slave system controller which exceeds the management range of the master system controller of two or more.
Overall status lamp 3 - 2 Display Screen The lamp indicates the unit operation condition. ON …… During operation OFF …… All group are stopping BLINKING …… Malfunction Display 02 01 PROHI BITED G-50A NOTE: The temperature setting includes a function to switch the display or between Celsius (˚C) Fahrenheit (˚F) (page 34).
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. 4 - 2 - 1 Group operation setting Ventilation No. Name of switches Function Display Operation status display 1 ON/OFF switch The ON/OFF condition of the displayed group is switched. *When there is an interlocked OA processing unit or LOSSNAY , turning this switch ON starts operation in a [High] ventilated state. Used to the type of the operation mode selection.
No. Name of switches Function Display 5 Current time setting switch These switches are used when the cur- Refer to section "4-5 Current time setting" . rent time is set. 6 Air direction setting switch The Air flow direction can be selected. The air flow direction can be selected to four directions and swing operation (auto vane). 7 Ventilation setting switch The operation mode of the interlocked Ventilation volume setting display ventilation can be performed.
(1) Local remote control operation prohibition setting. • G-50A can prohibit the operation of item such as connected local remote controller or slave 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 1 Press the SELECT prohibition 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 screen. ENTER switch on the group operation setting 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 switch to set "PROH. (PROHIBIT)" in blinking display and press the initial screen. ENTER switch on the collective operation setting 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. 10 Press the REMOTE PROHIBITION 0 switch to set "REMOTE CONTROL PROHIBIT ". 11 Remote operation prohibition/permission display ("REMOTE CONTROL PROHIBIT " ) is displayed with blinking. 12 Press 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 13 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. • 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". NOTE: When browser monitoring, or schedule setting from central monitoring PC, was performed, the timer screen of this function cannot be used.
(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 5 P4 or ( - ). 4 Press the / 8 (CLOCK/PATTERN) switch to select P1 to ENTER switch one time to complete the setting.(The cursor will move to the next setting position. ) 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 occured, 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. < Sifting to the current time setting screen > BACK SCREEN Press the switch to back to the user operation menu. Press the 5 switch to select "5 CURRENT TIME SETTING". 04-2002 MON 1 Press the switch to move the cursor position to be set. 8 2 Press the 5 (CLOCK/PATTERN) switch to set the number or day that is displayed.
5 . Initial setting 5 - 1 Shifting to initial setting menu • Shift to the initial setting menu by continuously pressing screen.(Refer to section "3-2".) + (2seconds or longer) on the user operation menu Shift to the user operation menu by continuously pressing + (2seconds 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.FUNCTION SETTING"(or 7 2 "2. FUNCTION SETTING"). (2) Switch the function by pressing the function No. you want to change, or the of the same number. 1 to 8 switch 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 slave 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. 6 Repeat operation 3 to 5 to set all groups managed by this controller. 7 When all setting are completed, press the BACK SCREEN switch. NOTE: • 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.
6 Used 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" 3) Input "2" 01 012 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 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. (or 4 )switch to select"1. GROUP SETTING" 1 Press the 1 (or"4. GROUP SETTING") of the initial setting menu. NEXT 2 The group configuration setting screen is displayed.
9 When the group name setting is completed, press the BACK SCREEN switch. The group configuration setting screen is displayed. 10 Repeat operation 3 to 9 and perform the group name setting for each group. 11 When all the group name settings are complete, press the BACK SCREEN switch. 12 The initial setting menu screen is displayed. To perform the setting, refer to section "5-6 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 1 Press the switch to display the original group on the group SELECT name setting screen. 2 Press the 3 Press 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. 1 Press the 5 switch to select "5 USER SETTING" on the initial setting menu screen. NEXT The user setting screen is displayed. 2 Press the switch to select the items to be set. 3 When all the selection are completed,press the to the initial setting menu screen. 7 BACK SCREEN switch to return TEMP.
5-8 IP address setting • This function allows setting of the IP address and mask address needed at LAN connection. MENU WED 15:29 1 Select the 6 switch select "8. IP ADDRESS SETTING" on the initial setting menu screen. 6 ADDRESS SETTING 7 FUNCTION SETTING 8 IP ADDRESS SETTING BACK IP ADDRESS SETTING The IP address setting screen appears. 2 Move the cursor to the address setting position by pressing the IP ADDRESS : 192.168.001.001 , MASK ADDRESS : 255.255.255.000 , and keys.
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. switch to select "3 REFRIGERANT MONITOR" on 1 Press the 3 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. 7-1 External input function (1) The function of external input • Emergency stop/normal operation, ON/OFF, local remote control prohibit/permit can be controlled for all air conditioners being controlled with a non-voltage contact signal input from an external input source.
(B) Pulse signal 1 Even if the ON signal is input during ON, the status will remain at the ON status. 2 When the local remote controller is prohibited, the ON/OFF operation, operation mode selection and temperature setting from the local remote controller is prohibited. 3 Set 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 WED 15:29 MENU 1 OPERATION MONITOR There is group information. 2 OPERATION SETTING 3 SCHEDULE SETTING INITIAL SETTING PLEASE WAIT Group information modification and settings modification There is no group information.
Interlocked setting … Registration of interlocked operation of ventilation unit with single or multiple indoor unit is performed. INTERLOCKED SETTING INTERLOCKED UNIT ADDRESS 005 • UNIT ADDRESS : Select the address number of the interlocked OA processor unit or LOSSNAY. GROUP SELECT • : Move the cursor to address display position. • Numeric keypayed : Set the address of the indoor unit. User setting … Select the display method and timer settings.
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 ON/OFF TEST RUN ON/OFF MODE 1 2 FAN SPEED 3 4 5 AIR DIRECTION 6 TEMP. CLOCK/ PATTERN 8 VENTILATION 9 INS. REMOTE PROHIBITION TIMER MODE RESET 7 CENTRAL CONTROLLER G-50A 0 DEL.
Weekly schedule setting screen GROUP SELECT • : Change the display group. • • • : Move the cursor to the pattern position. CLOCK / PATTERN / 5 : Select P1 to P4 or ( - ) 8 : Complete the setting. The cursor will move to the next setting position. * Repeat assign the schedule pattern to each day (and each group) ENTER NOTE : When the No.4 function select is set ON, P4 connot be set. BACK SCREEN * P1 to P3 of a composite pattern composed of P1 to P3 and P4.
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.
