Mitsubishi Electric Air Conditioning Network System Centralized Controller G-50A and Integrated Centralized Control Software TG-2000A Technical Manual
G-50A System Design Manual CONTENTS 1 Safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2 Outline of product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.1 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.4.5 In the case of measuring instrument pulse counting (direct reading) method . . . . . . . . . . . . . . . . . 57 8.5 Output of Charging Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 8.6 Charging Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 8.7 Caution for Using Charging Function . . . . . . . . . . . . . . . . . . . . . . .
1. Safety Precautions ● Before using this unit, be sure you read “Safety Precaution” carefully for proper usage. ● The “Safety Precautions” provide very important points regarding safety. Make sure you follow them. ● Danger caused by erroneous operation and the resultant degree are classified in the following table. WARNING Describes the items that cause serious danger of injury or death. CAUTION Describes the items that cause danger of injury or damage of household effects.
CAUTION Do not touch the button with wet fingers. An electric shock or machine trouble may be caused. Do not disassemble this unit. This may provide danger to touch the internal circuit board, or cause machine trouble. Do not wipe the unit with benzene, thinner or chemical waste. Neglecting this may change the color or machine trouble. When it is seriously dirty, first remove it with a squeezed cloth once damped with neutral detergent dissolved in water, and then clean with a dry cloth.
2. Outline of product The G-50A is a centralized controller with higher function than that of conventional centralized controllers, realizing to use for Web, industry first. One set of this product can control and monitor the indoor unit up to 50 sets. Further this centralized controller can monitor and control even on the browser soft (Internet Explorer Ver5 or upper) of a PC connected with LAN or telephone circuit.
2.1 Function 2.1.1 Centralized control with G-50A The basic function of the G-50A unit is shown in the table below. Table 2-1 List of centralized control function Content Switching start/stop collectively or for each group Switching cool/dry/fan/auto/heat collectively or for each group Setting room temperature collectively or for each group Set temperature range Cool/dry : 19°C ~ 30°C Heat : 17°C ~ 28°C Auto : 17°C ~ 28°C Switching air velocity in 4 steps collectively or for each group.
2.1.2 Centralized monitoring/controlling by Web browser (1) Features 1 Without using a specific software, air conditioners can be controlled by your desk top PC by setting the system (Web browser function is an optional and needs license registration). 2 On the one Web screen, operation status can be monitored in a unit of G-50A (maximum 50 sets of indoor unit). 3 In addition to the control unit with G-50A, control setting in a unit of block can be performed.
(3) Screen image The screen images at Web monitoring are shown below.
(4) Explanation of icons The air conditioner icons on the Web screen are shown below. Item Operation status of air conditioner group Operation status of ventilation equipment group (Lossnay) Operation status of interlocked equipment Operating Stopping Icon Abnormality generated Filter sign generated Operating Stopping Abnormality generated Filter sign generated Interlocked equipment operating Interlocked equipment stopping Schedule status Schedule provided Schedule not provided 2.1.
(2) Caution against PC used with Integrated Software TG-2000A (Outline) a) Items to be observed in selecting PC Please select a PC of desktop type. • Since a program is required to always be operated under powered state depending on the functions to be used, it is recommended not to employ a note type PC but employ a desktop type PC. It is because that the note type PC tends to be filled with heat more easily than the desk top type PC. • Some note type models can not be operated for a long time.
(3) Function list By utilizing the software (TG-2000A) and collecting the data of each G-50A, the operation control can be performed for up to 2000 sets in a unit of each floor or block on the PC screen.Please refer to section 2,3 for function licence. Additionally by using PLC (Programmable Logic Controller), general equipment can be controlled in addition to the electric power apportioning function and energy saving control.
(4) Screen images The screen images on the integrated software are shown as follows.
(5) Explanation of icons The air conditioner icons on the TG-2000A screen are as shown below.
2.2 Comparison table of function Table 4-2 compares the function of G-50A unit, Web browser and TG-2000A as follows.
2.3 Products list The functions to be coped with by G-50A, and necessary components, software and so forth are listed in Table 2-5.
2.4 Specification 2.4.1 Centralized controller: G-50A 300 70 120 25 Item Product dimension Mass Power source 22 46 220 57 Power consumption Operating environment Material External color 34 LAN RS-232C Mounting method 13 83.5 28 21 280 91 47 Detailed switch section Detail 120 (H) × 300 (W) × 79 (22)(D) mm 1.0kg DC30V Supplied from M-NET transmission line. (Received from the power supply unit for transmission line or outdoor unit (TB3) through M-NET transmission line.) 0.
3. System Design Flow The design flow to construct the G-50A system is given below.
4. Step 1: Selection of Air Conditioning Equipment In order to construct the system, air conditioning equipment should be selected firstly. This chapter introduces the air conditioners that can be controlled with G-50A and various limitations applicable. For the detail of air conditioning equipment, please refer to the manual of the relating air conditioner. 4.1 Limitations 4.1.
4.3 Limitation on transmission line wiring The material and wiring limitation of transmission line and signal line are given in Table 4-4. For the detail of the limitation on each wiring length, please refer to Items 4.3.1.
(1) Centralized control system M-NET bus The power supply distance of the centralized control system M-NET bus can be expressed by the equation below. This represents the distance limitation to allow powering of the centralized control system M-NET bus. Exceeding this distance makes the power supply to the end equipment impossible disabling communication and control.
[Example to use relay board] Centralized control system M-NET bus m K-transmission converter Relay board Relay board m Local remote controller K-control Mr.Slim air conditioner indoor unit Local remote controller m K-control Mr.Slim air conditioner indoor unit Local remote controller K-control Mr.Slim air conditioner indoor unit Local remote controller K-control Mr.
5. Step 2: Selecting System Management Parts 5.1 M-NET system structure There are cases in which other System Controllers (SC) besides model G-50A can be run on the G-50A system structure. In order to do so, the following outlines a number of rules to be observed for system management. 5.1.1 Concept of the system controller The G-50A is always the host system of a self-controlling system structure.
5.1.2 Regarding power supply within the system (1) Regarding power supply parts Within the G-50A system, the parts serving to supply electricity are fixed for each transmission line. Please take care there is no electricity supply overload to any one transmission line.
5.1.3 Selecting the power supply unit G-50A is driven by DC12V from the Power supply unit : PAC-SC50KUA. To communicate with the air conditioner, it is necessary to connect to the M-NET transmission line in addition. First determine whether G-50A is connected to the centralized control transmission line or to the indoor/outdoor transmission line.
Table 5-3 Connection number of Power supply unit PAC-SC50KUA Power supply unit PAC-SC50KUA Connectable G-50A/system 1 set Remarks Together with G-50A, other system controllers can be connected to the centralized control transmission line. The G-50A of one set and other system controllers up to 4 sets can be connected to the centralized control transmission line.
5.1.4 When managing a K-control model When managing a K-control type device, a separate K- transmission converter, model PAC-SC25KAA, is required. (1) System controllers able to control a K-control type device A K- transmission converter unit only accepts communication with a upper controller with bearing address [000].
5.2 External input/output The main unit of the G-50A is equipped with an external input/output function. This function enables external input control and output monitoring for each G-50A unit. This function uses the main unit of the G-50A’s CN2. For use, please purchase the optional external input/output adapter (PAC-YG10HAA). Optional: PAC-YG10HAA 5.2.
(4) Recommended circuit example (A)Level signal (B)Pulse signal 1 1 5 Orange Start/stop and emergency stop X1 5 X1 6 6 7 7 8 9 CN2 G-50A Red 8 DC power supply 9 Maximally 10m CN2 G-50A Local arrangement board Orange X1 Yellow X2 Blue X3 Gray X4 Operation X1 X2 X3 X4 Stop Prohibition Permission Red DC power supply Maximally 10m Local arrangement board * Special local arrangements are required for the relay, DC power supply (DC 12V, or DC 24V), and extension cables, etc.
6. Step 3: Construction of the G-50A system Below follows an explanation for the construction of a G-50A system. In order to use a PC, etc. to monitor the connections of multiple units to the G-50A and the operating status of air-conditioning units, please connect G-50A units or one or more PC’s using a LAN.
6.1 Centralized monitoring using a PC To monitor the G-50A system by connecting it to a PC, the two following methods are available. ● Perform monitoring using the browser software of the PC. (Web monitoring) Monitoring and operation can be performed without using any special software. ● Monitoring can be performed by installing exclusive integrated software in the PC. (Integrated software monitoring) The use of this exclusive software allows more detailed monitoring.
Operations and monitoring available with the integrated (optional) software Operations and monitoring available with the web browser (Internet Explorer) software Data is updated automatically Operation status is updated every minute, while the status of any abnormalities is updated every 3 minutes.
6.1.1 About floors, blocks, and groups The G-50A system can target groups, operation blocks, floors, and the whole building. In addition, for operation and monitoring, the name of the G-50A and the name of the building can be registered. Table 6-2 shows the setting registration and operation monitoring of each part while Table 6-3 shows the characters that can be used for setting each registration screen. ● What is a group? This forms the standard of all operations and monitoring.
Table 6-3 Name registration table Item Default Setting Tool1 G-50A Main Unit Centralized Control PC (Web) Centralized Control PC (integrated software) Group name 2 Up to 10 characters Up to 20 characters Long name: Up to 20 characters Short name3: Up to 8 characters (Name setting is possible using the G-50A main unit) Up to 20 characters Up to 20 characters Operation block name Charge block name Up to 20 characters Floor name Up to 16 characters G-50A name Up to 40 characters Watt Hour Meter name
6.1.2 Centralized control PC (local arrangement) Table 6-4 indicates the minimum specifications the PC required to conduct monitoring using the integrated software or the Web browser, should satisfy. Please arrange locally for a PC satisfying the specifications outlined below. Table 6-4 PC specifications Item PC CPU OS HDD Memory Display resolution Interface Remarks Monitoring using the web browser PC/AT compatible Pentium 133MHz or faster Windows98/Me/2000/XP Internet Explorer 5.
6.2 About password control When performing centralized control using a Web browser or the TG-2000A software, it is possible to restrict operations to approved users by setting a password to perform operations or functions please refer to section 2,3 for function licence. 6.2.1 Password control when using a Web browser (1) For general users A general user is a user who enters through the [index.html] web page. This type of user can operate and monitor the operation status of air-conditioning units.
6.3 About LAN 6.3.1 LAN types For the LAN cable, a 10BASE-T type is recommended. As for the category, from the point of view of availability and the development of mixed systems with optical cables, the use of category 5 is recommended.
(3) Switching hub The switching hub means the hub that controls traffics at exchanging packets (communication data) among plural networks, and send packets to a specified address. Different from ordinary hubs, it carries out one-to-one communications among respective ports, accordingly, even when one set of ports is communicating, other ports can communicate freely. By this function, conflict of signals can be restricted, and network performance can be improved. Fig.
7. Step 4: Implementing annual/weekly schedules With the G-50A main unit, weekly schedules can be implemented. However, when registering for a separate license (Annual/Weeky schedule), multifunctional weekly schedules and annual schedules can be performed. Please refer to section 2,3 for function licence.
7.1 Weekly schedule using the G-50A The following explains the outlines the weekly schedule set using the G-50A. If the weekly schedule is set using the G-50A, setting is required to be performed using the G-50A for every G-50A unit. 1The timetable for start/stop can be set in increments of 10 minutes. 2For the daily operation schedule, up to 3 settings for each of the start and stop times for operation can be set.
Day of the week selection Selects the day of the week for the schedule to be set. Setting unit Selects the setting unit. Save/do not save Sets saving or not saving when pushing the settings save button. Block name Selects the block to be set. Schedule contents Displays the schedule contents. Group name Selects the group to be set. Selection button Sets the schedule contents. Delete button Deletes the contents of the schedule. Group number Selects the group to be set.
7-3 Weekly schedule of the integrated software Registering the weekly/annual schedule license number in the G-50A main unit using the PC’s browser, will enable this function. In this case, the weekly schedule of the G-50A will be invalidated while the data previously set with the web monitor will be validated. For the schedule set with the TG-2000A software, settings are set per target unit (group, block, floor, etc.) in the schedule set screen of the TG-2000A.
8. Step 5: Charging Function of Energy Charge Measuring This step is to set the charging function of measuring instruments to be performed by TG-2000A. This setting is required to use the charging function by measuring instruments. Since this function is optional, license registration to the G-50A unit is essential to use the charging function by measuring instruments.
(2) What is charge? This represents the charge of electric power, gas or water consumed by each air conditioner or tenant (In the case of using electric power count by PC direct connect (Watt Hour Meter (RS-485)), only electric power can be counted). The charge of such consumption can be calculated by the following 2 methods, and the output can be presented in printer output or file output in CSV format.
(4) What is the seasonal charge? The electrical power charge can be divided into the summer seasonal charge and normal charge. Because of this, the following management can be adapted for example; “As a ratio of using air conditioner rises in the summer (July ~ September) and electric power consumption of a whole building increases accordingly, higher power rate may be applied in this period.” The period of the seasonal charging may be applied by specifying the date of start and end respectively.
8.2 Selection of Charging Function The G-50A system provides the following 3 methods to calculate the charge by measuring instruments. For the objective models that can be charged by each method, please refer to Table 4-3. (1) Manual input of electric power consumption This method is only applicable to the charging of electric power consumed by air conditioners.
8.3 Basic Composition and Required Materials 8.3.1 Manual input of electric power consumption This method is only applicable to the charging of electric power consumed by air conditioners.
(3) Setting items Table 8-2 shows the items of TG-2000A charging system setting and that of the charging required to carry out the electric power manual input method.
8.3.2 Watt-hour meter pulse counting (apportioning) method This method is only applicable to the charging of electric power consumed by air conditioners.
(3) Setting items Table 8-5 shows the setting of measuring instrument of TG-2000A, charging system and charging set items required for the electric power pulse counting (apportioning) method.
8.3.3 Measuring instrument pulse counting (direct reading) method (1) Basic composition Single-phase 200V Charge license Input G-50A LOSSNAY Power supply unit Charge block Single-phase 200V LOSSNAY Charge block Indoor unit system watt-hour meter Charge block Indoor unit system watt-hour meter Indoor unit system watt-hour meter PLC (installed with pulse counting software) Uninterrupted power source (UPS) A measuring instrument should be installed for each charge block.
8.3.4 Power consumption PC direct reading system (Apportioning system) This system can only be applied to the charging of power consumption by air conditioners.
(3) Setting items Table O-O shows the setting of the measuring instruments, charging system, and charge setting items of TG-2000A required to execute the power consumption pulse counting system (apportioning system).
8.4 Mechanism of Charge Calculation The mechanism of electric power apportioned charge calculation by TG-2000A is given below.
(4) TG-2000A Charge block By collecting charging information from PLC and G-50A, the TG-2000A conducts the apportioning calculation of these data during AM 4:00 ~ 7:00 once a day. As the electric power consumption collected from PLC represents the integrated value, TG-2000A takes a difference with the electric power consumption of the previous day and holds the data converted in the daily power consumption.
(3) Apportioning by apportioning standard data To calculate [Power consumption per indoor unit], multiply the operation time by the standard data being calculated for each indoor unit per charging time frame with each capacity. Sum up this [Power consumption per indoor unit] for the indoor units inside the watt-hour meter to obtain [Indoor unit total power consumption]. Using a ratio of these two data, calculate [Daily power consumption by indoor unit] once a day. Power consumption of indoor unit 1 4.
8.4.3 Apportioned calculation of indoor unit Figure 8-10 shows an example of apportioning method when a watt-hour meter is installed on the indoor unit power source line. (1) Decision of indoor unit apportioning mode First decide to carry out the apportioning of indoor unit or not. When a watt-hour meter is not connected to the power source line of indoor unit, set to [No apportioning]. No apportioning: The electric power consumption of indoor unit will not be apportioned.
8.4.4 Manual input of electric power consumption The calculation method of manual input not connecting watt-hour meter is given below. With this method, calculation is performed by employing the reading value of watt-hour meter without using watt-hour meter or PLC itself. Collects and stores the following operation data of air conditioners.
(5) Charging ratio support software By using “Charging ratio support software” (EXCEL) provided with the integrated software, the charge apportioning and bill preparation for each tenant can be performed. Through the reading of the operation time data file prepared by TG-2000A from the menu screen of the charging ratio support software, automatic calculation will be carried out. By inputting the reading value of each watt-hour meter manually, apportioning calculation will be performed.
8.4.5 In the case of measuring instrument pulse counting (direct reading) method The measuring instrument pulse counting (direct reading) method is explained here. For this method, charging is practiced only by the measuring instrument value collected by PLC. Therefore, a measuring instrument is required to install for each charge block (tenant). It is required to prepare PLC, the pulse counting software and the license registration of all G-50As1.
8.5 Output of Charging Data Thanks to the use of TG-2000A, the apportioned result and power consumption can be output per each watt-hour meter, unit price1 or block. The output content (format) differs depending on the content of “Charging relations” set among the user setting items on the initial setting screen. Select the output format to meet your purpose of use.
8.6 Charging Method As shown below, the charging in this system can be set as follows. Divide the time frame 0:00 ~ 24:00 into 10 charging frames, and assign 5 charging unit prices to each charging frame respectively for setting. Please note that each setting is common within the system.
8.7 Caution for Using Charging Function Please observe the following points when using the charging function. (1) Caution for each control/setting ● When using the charging function (power apportioned charging), make sure to conduct clearing process before setting or modifying the system composition, monitoring display setting, and charging system setting. When any item has been modified, the setting of the charging system should be modified or identified.
9. Step 6: Energy Saving/Peak Cut Control Here the energy saving control or peak cut control to be performed by G-50A is set. This setting is essential in conducting the energy saving control or peak cut control. As this function is optional, the license registration to G-50A is necessary to use. A different license should be applied to the energy saving control and peak cut control respectively, the license for your desired usage should be registered.
9.1 Outline Applying the energy saving setting from the integrated software TG-2000A allows conducting the energy saving control by the indoor/outdoor units or peak cut control by using PLC.
9.2 Energy Saving Control/Peak Cut Control 9.2.1 Energy saving control The energy saving control includes the items listed on Table 9-2, and they can be set from the integrated software for each block freely. After setting, G-50A conducts energy saving control on to the air conditioning group within the operation block in a unit of 3 (3/6/9/15/30 minutes) within a 30 minutes not allowing overlapping1 the control time.
(1) Energy saving control for indoor unit For the energy saving control for the indoor unit, select the time portion to be applied to the energy saving control items listed in Table 9-2 from 0/3/6/9/15/30 minutes. By dividing those items by the group numbers in the operation block evenly, the energy saving control is applied to the groups starting from that with smaller group number in order. When “30 minutes stopping” is being applied to save energy, ON/OFF operation can not be performed by any controller.
(2) Energy saving control for outdoor unit For the energy saving control for the outdoor unit, select a time portion to be applied to the energy saving control items listed in Table 9-2 from 0/3/6/9/15/30 minutes. By dividing those items by the group numbers in the operation block evenly, the energy saving control is applied.1 The rotated operation is applied to the outdoor units starting from that with smaller address.
9.2.2 Peak cut control (1) Explanation of function Connecting the watt-hour meter (PLC) allows conducting the energy saving control of Table 9-2 divided into 5 levels (Level 0 ~ Level 4) by estimating the power consumption for 30 minutes. Meantime, the control level is judged with an interval of 1 minute, and the control of higher level is applied in accordance with the measured power consumption for the past 30 minutes and estimated value.
Selecting target G-50A for setting Select G-50A objective for peak cut setting. Batch setting for whole building is possible. Setting levels Set the electric power to start peak cut control. (Levels 1 ~ 4) Selecting the setting unit of indoor unit Select indoor unit objective for peak cut control or select whole building collectively. Setting control detail and time Select the detail and time of indoor unit peak cut control.
9.3 Energy Saving Control Status · History Monitor 9.3.1 Current energy saving control Status You can confirm whether or not an air-conditioning group is under energy saving control. If energy saving control is on, operation status icons shown below will be indicated on the display by the web browser or integrated software. Table 9-5 Energy saving control icons Set temperature control or fan control is on.
(3) Creation of daily report/monthly report trend graphs You can turn a CSV file (trend graph) into a graph using “Trend graph Idisplay tool” that comes with TG-2000A. Refer to the Item 14.2 for details.
9.4 Energy Saving Control System Design Flow Following is the outline of the system design flow for energy saving control execution. (1) Determine the license type. If you try to have a peak cut control by calculating power consumption from a watt-hour meter, you will need to have a separate PLC (with a pulse count software installed). A peak cut control license will be required for this. If you do not implement a level control, you don’t need to arrange a PLC, or to decide a demand level.
10. Step 7: Selection of Measuring Instruments (1) Measuring instruments Use measuring instruments with recommended pulse signals shown in the Table 10-1 below. We also recommend using a watt-hour meter shown in the Table 10-2 below. Table 10-1 Recommended pulse specification Description Semi-conductor relay type 100 ~ 300ms (100ms or above) Select a measuring instrument which outputs non-voltage a-contact pulse per pulse output unit.
(2) Power consumption PC direct reading system (RS-485WHM) Please use the RS-485 watt-hour meter shown in Table 10-3. Table 10-3 Model name of RS-485 watt-hour meter specified Model name Detail Maker name XXXXX XXXXX XXXXX XXXXX Model name XXXXX XXXXX XXXXX XXXXX Remarks XXXXX XXXXX XXXXX XXXXX << Please enter the maker name, model name and remarks of RS-485 watt-hour meter described on WT03901X03.
11. Step 8: General Purpose Equipment Control TG-2000A can control and monitor system equipment. By using general-purpose control functions, you can control and monitor other manufacturer’s air conditioning units, lighting fixtures and other system equipment as well as water level of a water or fire tank with a flooding/low level alarm on the TG-2000A monitor screen. System equipment is controlled by PLC. “General-purpose control software: PAC-YG21CDA” needs to be installed in PLC. (For PAC-YG21CDA Ver.
11.1 Outline PLC will be used to control general-purpose equipment, along with a DI board (DC input unit) and a DO board (transistor output unit). One icon will be shown on the TG-2000A monitor screen to represent one system equipment, and you can operate (one shot pulse output), monitor the status, and monitor for error (level input). Therefore, you will be using two terminals on DO board and two terminals on DI board for one system equipment.
11.2.2 Determine the control items. After you determine the equipment to be connected, define the control items for each equipment. For instance, whether you want to operate the instrument (ON and OFF) and monitor it, including error monitoring, or just watch for failure (malfunction). For ON and OFF, status output signal from the instrument changing the icon status (color) is the basic1 mechanism.
11.2.3 PLC assignment After you determine the control items of the connected instrument, assign PLC terminals. General-purpose control PLC needs to have one DI board and one DO board mounted regardless of the control items. (There are certain restrictions about the mounting location and others. Refer to 12.3 for details.) Table 11-3 shows the general-purpose control PLC terminal assignment.
11.2.5 Setting of TG-2000A After the assignment of terminals, TG2000A should be configured. For each general-purpose instrument, what to be controlled and monitored should be set up in TG-2000A. Selection of PLC No. Select the PLC. General-purpose instrument button Settings of the generalpurpose instrument can be made. Menu includes change/copy/paste. Selection button Select whether there is a general-purpose instrument or not.
12. Step 9: Determining Number of PLC Units This chapter talks about how to determine the number of sequencers (PLC). 12.1 PLC Standard Configuration G-50A uses PLC (Programmable Logic controller) to provide measuring instrument charging function (pulse count system), general-purpose control function and other functions. The PLC to be used is “MELSEC-Q series” by Mitsubishi Electric, and Figure 12-1 shows the standard configuration of G-50A system.
12.2 PLC’s for Pulse Count Function 12.2.1 Restriction on the number of units To carry out measuring instrument charging function or energy saving peak cut control, you will need to have the standard configuration explained in the previous chapter plus a DC input unit. One DC input unit can support 16 contacts, so you can connect up to 16 measuring instruments. Since one PLC has two open ports, you can connect 32 watt-hour meters to 2 DC input units.
12.3 PLC for General-purpose Control Function 12.3.1 Restriction on the number of units When performing general-purpose functions, you will need the standard composition explained in 12.1, DC input unit, and transistor output unit. DC input unit and transistor output unit each supports 16 contacts. One system instrument uses two contacts, so, up to 8 general-purpose units can be connected. When you connect 9 or more generalpurpose instrument, you will need to add one more PLC unit.
12.3.2 Terminal connection diagram Figure 12-5 shows the connection to terminal boards in DC input unit (QX40) and transistor output unit (QY40P). Since DC input unit and transistor output are non-voltage, you have to provide a DC24V power supply (DC12V is unacceptable) and a DC24V or DC12V power supply for transistor output unit separately. If the facility instrument side has a level input, you have to prepare a pulse-level conversion circuit separately, as shown in the figure 12-6.
12.4 PLC Software In order to use various functions based on PLC, integrated software is necessary. Some functions require license number registration in the G-50A main body. PLC needs to have software to implement various functions.
12.5 External View of Sequencer External dimension of each PLC unit is shown below. Base unit 98 7 7.5 44.1 80 4-mounting screw (M4 × 14) 15.5 169 189 CPU unit Power supply unit D02CPU 061P-A1 POWER MODC RUN ERR. USER BAT. BOOT 98.15 98.00 PULL PULL RS-232 89.30 27.40 90.50 Ethernet unit 55.40 DC input unit QX40 0 1 2 3 4 5 6 7 8 9 A B C D E F QJ71E71-100 0 1 2 3 4 98.00 98.00 5 6 7 8 9 A B C D E QJ71E71-100 90.50 27.40 F 90.50 27.
12.6 PLC Wiring Diagram A wiring example around PLC is shown in Figure 12-7. In the figure below are shown also necessary components in order to secure reliability (for reference). Depending on the setting environment, however, unnecessary components may be included. In this case, consult with a contractor to decide whether or not they are necessary.
13. Step 10: Determination of Address for Air Conditioning Instrument and PC for Control 13.1 Address Setting for Air Conditioning Instrument Address setting range for various types of air conditioning instrument is shown in the table below.
13.2.1 Setting method for connecting G-50A to exclusive LAN This is a setting method to establish G-50A system with exclusive LAN wiring (1) Setting of IP address In the case that LAN wiring is newly provided for G-50A system, allocate the IP address of G-50A from [192.168.1.1] in sequence. For example, assign [192.168.1.1] for the first G-50A, [192.168.1.2] for the second G-50A, and so and so in sequence.
13.2.2 Setting method for connecting G-50A to existing LAN (1) Case of central monitoring by Web browser In the case of installing G-50A system in the existing LAN wiring, consult your network administrator who manages the LAN system to set IP address, subnet mask, and gateway address. Meantime, gateway address can be set only with the initial setting tool. Backbone LAN Gateway Gateway IP: 10.130.1.250 IP: 10.130.2.250 Obtained from LAN administrator G-50A IP address: 10.130.1.1 Sub-net mask: 255.255.
13.3 Setting for Remote Monitoring The use of a modem and dial-up router allows monitoring and control from remote locations. The components shown in Table 13-7 are necessary for remote monitoring. In addition, when using the dial-up router shown in Table 13-7, the lines available for connection from remote locations are assigned according to the telephone circuit class in the area where G-50A is installed. Select the line suitable for the remote place, referring to Table 13-8.
(1) Setting of dialup router Set the dialup router so as to connect received call (data communication) via public telephone line to the LAN side. And then, set an IP address to be assigned to the dialup router and PC in remote locations. The IP address of the dialup router is recommended to be [192.168.1.254] and the IP address of a PC to be assigned to the telephone line in remote locations is recommended to be [192.168.1.211]. Also, the IP address of the PC to be assigned to LAN must be set to [192.168.1.
13.4 Setting of Abnormal Mail Transmission System As an abnormal mail is transmitted by E-mail, it is necessary to contract with your internet service provider. The abnormal mail transmission system is available by setting information such as the mail address and ID for connecting to the Internet, which are obtained from the provider, to G-50A and a dialup router. The components shown in Table 13-9 are necessary to use the function of abnormal mail transmission.
13.4.1 Preparations before performing abnormal mail transmission (1) Making a contract with an Internet provider to transmit mails at the side of a customer Contact with an Internet provider. (Except for the case that a private LAN system in an own company’s building and the like is provided with a mail server.) After the contract, a provider contract document specified an access point, user ID, authorized pass word, etc. is sent to the customer.
13.5 System Using Optical Cable for LAN As stated in item 0, the LAN wiring length in G-50A system can be expanded up to 500m by connecting a hub in the form of cascade connection. However, in the system in which the wiring length requires 500m or more on the system configuration, Optical cable if used can be extended up to 500m or more.
14. Step 11: Confirmation of Other Functions 14.1 Individual Browser Function The Ver.2.5 of G-50A or later is provided with the individual browser function. (License registration required) This function is not available with G-50A versions earlier than 2.5 (For administrator’s web browser function, web monitor license registration is required). Please refer to section 2,3 for function licence. 14.1.
14.1.2 User registration from administrator Administrators (users who access to Web window from administrator.html) perform user registration on the Web window. Each user name is changeable. Set a pass word to be set together with a user name with each user. User name: English half-size characters (Up to 20 characters) Pass word: English half-size characters (Up to 10 characters) User information The user names of administrators and air-conditioners available are displayed on the screen.
14.2 Trend Data Output Function TG-2000A 4.1 or later version is additionally provided with the trend data output function. 14.2.1 Outline Trend data and peak cut data in each optional function (measuring instrument charging function and peakcut function) can be output from CVS file. A trend graph can be developed from the output data in CSV file by using the Support Tool for Trend Graph in the CD-ROM for Installation of TG-2000A. The trend data which can be output are as shown in Table 14-1.
14.2.2 Preparation for outputting parameter files In order to output parameter files, a setting on the window of TG-2000A initial setting screen is required. The following conditions allow each trend data to be output. 1 Trend data related to electric power (There are 3 kinds): “Electric power PLC included”, “Watt-hour meter and measuring instrument connected”, and “Trend”. 2 Trend data for temperature: Check on “Trend” and “Temperature”. 3 Data for peak cut: “Electric power PLC included” and “Peak cut”.
14.2.4 Example of CSV files output Example of each output file is shown as below. In addition, although each relevant datum is shown in each data column, the data value with the following mark indicates abnormal data. [-99] : Indicates that TG-2000A have failed to collect normal data from G-50A and PLC. [ ] (Blank): Indicates that the power source for TG-2000A has been off. (1) Trend data for temperature Selection is possible in group, operating block, and floor.
(4) Trend data for watt-hour meter and measuring instrument Consumed integrated electric power of every designated measuring instrument is displayed on the screen. Hourly basis in a designated period (5) Data for peak cut (Daily report) Electric power consumption of every G-50A in a unit of 30 is displayed on the screen. A control level of electric energy of every G-50A in a unit of 2 minutes is displayed on the screen.
14.2.5 Graphing trend data A trend graph can be developed from a CSV file output as trend data by means of “Support tool for developing trend graphs” in the CD-ROM for TG-2000A installation. [Essentials for display of a trend graph] Excel 2000/XP An output file of trend data or peak cut data “Support tool for drawing trend graphs (Excel)” Selection of trend data Trend data and peak cut data files are selected.
15. Initial Setting Tool 15.1 What is the Initial Tool? This is a tool for group setting of air-conditioners, registration of transmission report on abnormal mail, and registration of the IP address of G-50A. The conventional central controller (MJ-103MTRA) was required to input locally group setting and various initial settings such as a name of group, etc.
15.2 Composition of Initial Setting Tool Other than the CD-ROM for initial setting tool, PC and LAN cable are required for the use of the initial setting tool. 15.2.
15.2.2 Connection to G-50A There are the following 3 patterns for connecting system to G-50A. (1) Connection using LAN connecting cable for initial setting (PAC-YG00FA) In the environment where G-50A is installed on the wall, control panel, etc., a connection to the LAN connector located backside may be difficult. Therefore, a connector for the initial setting tool is mounted on the control panel of G-50A.
16. Other function 16.1 Auto-Changeover Function (Automatic Changeover of Cooling/Heating Operation) For the outdoor unit (Y Series) without the function of cooling/heating simultaneous operation, G-50A can judge whether cooling or heating should be selected by observing a difference between the set and inlet temperature of each indoor unit, and collectively changes over the operation of cooling/heating of indoor units connected to the outdoor unit.
16.1.1 Auto-changeover mode Under this mode, the difference of the set and inlet temperature of air conditioning groups (excluding the group under fan operation or stopping) contained in a same changeover block is measured to assign points to each group accordingly, and from this resultant total, the changeover mode (cooling/heating) is judged for selection.
Mitsubishi Electric Air Conditioning Network System Centralized Controller G-50A and Integrated Centralized Control Software TG-2000A Technical Manual Issued in Dec. 2003 F1105-302 (MDOC) Contents effective Dec. 2003 Specifications subject to change without notice.
3400 Lawrenceville Suwanee Road ● Suwanee, Georgia 30024 Toll Free: 800-433-4822 ● Toll Free Fax: 800-889-9904 www.mrslim.com Specifications are subject to change without notice.
