Mattei MAESTRO XS Reference Manual

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MAESTRO

Strada Padana Superiore 307 – 20090 VIMODRONE (MI)

Tel +39 – 02253051 (16 lines) – Fax +39 – 0225305243

REFERENCE MANUAL

ING. ENEA MATTEI SpA

E-mail:

info@mattei.it

TECA1G-110

www.mattei.it

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Page 1 MAESTRO MAESTRO MAESTRO MAESTRO REFERENCE MANUAL TECA1G-110 ING. ENEA MATTEI SpA Strada Padana Superiore 307 – 20090 VIMODRONE (MI) Tel +39 – 02253051 (16 lines) – Fax +39 – 0225305243 E-mail: info@mattei.it www.mattei.it...
Page 2 Ing. Enea Mattei S.p.A. reserves the right to modify the product, the instructions and the data contained in this publication at any time, with no obligation to update information previously supplied. Service and spares M.T.A. s.p.a. C.so Italia, 47 Verdello/Zingonia (BG) - ITALY tel.
Page 3: Table Of Contents
S U M M A R Y GENERAL 1 .0 Introduction 1 .1 identification codes HARDWARE DESCRIPTION 2 .1 Control devices 2 .2 Video terminal 2 .3 The BASE module 2 .4 The EXPANSION module 2 .5 Electrical connections 2 .6 Installation 2 .7 Addressing the expansion modules 2 .8 State indication diodes (Base unit) 2 .9 State indication diodes (Expansion unit)
Page 4 15 .2 Sequence mode (FIFO – First in First out) 15 .3 Equalisation mode 15 .4 Configuring the network 15 .5 Configuring MAESTRO xs as “Master” 15 .6 MONITOR menu display 15.6.1 Other masks that change in the “Network” mode 15 .7 Adding an OPTIMA compressor...
Page 5: General
Chapter GENERAL 1 .0 Introduction This manual is aimed at technicians, Mattei installers and all customers who wish to find out how the MAESTRO xs electronic board works. The manual describes hardware and software characteristics and operating modes. MAESTRO xs is a programmable control device for the compressor that can adapt its operation to the specific needs of the airline to which it is connected.
Page 6: Hardware Description
MAESTRO xs is made up of different pieces of hardware according to the needs of the compressor on which it is installed.
Page 7: Video Terminal
D E S C R I P T I O N 2 .2 Video terminal MAESTRO xs has a terminal that acts as the user interface, informing him on the state of the compressor and allowing the various handling parameters to be programmed.
Page 8: Description Of Keys
H A R D W A R E D E S C R I P T I O N Description of keys Reset key: Resets faults found by the Up key: Used to navigate software system. First remove the cause of the menus and also to increase the value of fault.
Page 9: The Base Module
2 .3 The BASE module The base module of the MAESTRO xs is the core of the system: the management software is installed on it. There is no software installed on the two expansion modules because the base module automatically recognizes the modules connected on the basis of the address assigned to the module Below is a brief description of the main characteristics of the base model.
Page 10 H A R D W A R E D E S C R I P T I O N Base module electrical connections Terminal n° Connector Reference Description Power supply + 24 Vac or 24 Vdc Power supply reference SYNC Not used Line pressure (4÷20 mA) Chamber pressure (4÷20 mA)
Page 11: The Expansion Module
D E S C R I P T I O N 2 .4 The EXPANSION module The MAESTRO xs expansion module,as mentioned above, allows the number of physical inputs and outputs to be increased. This allows more sophisticated compressors to be handled.
Page 12: Electrical Connections
D E S C R I P T I O N 2 .5 Electrical connections The MAESTRO xs expansion modules, as mentioned above, allow the number of physical inputs and outputs to be increased, but since they contain no software they do not know to which sensors they are connected.
Page 13 H A R D W A R E D E S C R I P T I O N 2.5.2 Electrical connections Expansion N°2 Terminal n° Connector Reference Descrizione Power supply + 24 Vac o 24 Vdc Power supply reference Not used RS- 485 network connection for tLAN network Oil pump command input...
Page 14: Installation
D E S C R I P T I O N 2 .6 Installation The MAESTRO xs is a modular controller consisting of a base unit and expansion modules to be used on the basis of the complexity of the machine or the accessory units installed on the compressor.
Page 15: Addressing The Expansion Modules
2 .8 State indication diodes (Base unit) The central MAESTRO xs unit has three LED diodes indicating the operational state of the device. The diodes are in the upper part of the unit as shown in figure 11.
Page 16 H A R D W A R E D E S C R I P T I O N Table 10...
Page 17: State Indication Diodes (Expansion Unit)
H A R D W A R E D E S C R I P T I O N 2 .9 State indication diodes (Expansion unit) The correct functioning of the expansion modules can be verified with the three LEDs close to the address selector (see figure 12);...
Page 18: Installing The Serial Board
D E S C R I P T I O N 2 .10 Installing the serial board MAESTRO xs can be connected to a remote control software using suitable management software. However, it is necessary to install an RS-485 serial communication board.
Page 19 Carel Protocol: communication with private protocols for connection to a supervisor supplied by • Mattei. Modbus Protocol: standard communication for connection to non Mattei devices. • On the left is the correspondence of the electrical connections of the serial board.
Page 20: Software Installation
This key (cod. AC40C24260) allows easy and rapid installation without using a computer. On request, Mattei can supply this key with the software for operating the compressor already loaded. For updates, the key can be sent to Mattei for replacement.
Page 21 H A R D W A R E D E S C R I P T I O N Fig. 23...
Page 22: Hardware Settings
H A R D W A R E D E S C R I P T I O N Remember that if there are any power cuts during transfer it could be necessary to repeat the operation. once the video terminal is reconnected, power up the controller and configure it on the basis of the type of compressor on which it is installed.
Page 23: Software Menu
Chapter SOFTWARE MENU MAESTRO xs communicates with the user through interface menus that allow the compressor to be monitored and programmed. These menus are subdivided by function and not all are available to the end user, since some are protected by one or more passwords These menus are in terms subdivided according to the various applications carried out by the variables they contain.
Page 24 S O F T W A R E M E N U To make variables easier to trace, each menu is identified by a number, and the same is true for the sub menus down to the individual variable. In all displays except for those of the monitor menu, the top line tells us in which branch of the menu we are. For example, if we are in the working pressure settings submenu, we will see [1.2.1 Settings]: we are thus in menu one, submenu two, page 1.
Page 25: Monitor] Menu
S O F T W A R E M E N U 3 .1 [MONITOR] Menu The [Monitor] menu is the core of the entire software. Here it is possible to monitor all pressures and temperatures of the compressor, and also verify its operating state, working hours etc. Given the importance of this menu, if you are in other sections of the software, the system will automatically display the initial menu screen after a period of inactivity on the terminal keypad.
Page 26 S O F T W A R E M E N U Continuing through the pages of the menu using the down arrow key, the following data are displayed: 06.0bar Chamber pressure • Compressor running hours • Cha. Press. :006.1bar Compressor load hours •...
Page 27 S O F T W A R E M E N U When the network operating mode is enabled one or two additional pages will be displayed showing the two groups of compressors. These groups function autonomously but with predefined priorities It is thus possible to know the state of each compressor in the group from Gr.
Page 28: Main] Menu
Modulation Modulation € This parameter cannot be modified when the compressor is enabled. MAESTRO xs can control the compressorusing a pressure probe or a 1.1.2 Configurazione mechanical manostat. It is also possible to disable or enable the network function. Pressure Probe...
Page 29 S O F T W A R E M E N U WARNING: The pages of the [Configuration] menu displayed or hidden according to the operation and use settings: Page “1.1.1 Configuration” is not accessible if the “network” or “Optima” modes are enabled Page “1.1.2 Configuration”...
Page 30 S O F T W A R E M E N U 3.3.4 [Language] submenu This submenu allows us to set the language used by the user interface. Remember that only menus not protected by a password will be translated into the language chosen. To reduce the amount of memory needed for translations, two versions of the software have been developed.
Page 31 S O F T W A R E M E N U 3.3.5 [Selfprogramming] Submenu This submenu allows a user who has accidentally or for other reasons 1.5.1 Self programming cancelled certain parameters to reset factory values. Push <Enter> Perform the function These are: Maximum pressure •...
Page 32: Advanced] Menu
M E N U 3 .4 [ADVANCED] Menu This menu can only be accessed by Mattei service personnel; a password is necessary for access. This menu allows accessories and particular functions such as Optima, the dryer and other devices to be enabled.
Page 33: Log
The first page allows us to enable hardware expansions; remember that 2.2.1 Enabling MAESTRO xs is made up of a base unit and two expansion modules. Expansion Nß1: Before enabling a function connected to one of the expansions, the expansion must first be enabled.
Page 34 S O F T W A R E M E N U On the third page we can enable: 2.2.3 Enabling The dryer • Dryer: The inverter • Inverter: To enable the dryer function, the related expansion unit must first be €...
Page 35 S O F T W A R E M E N U 3.4.3 [Thresholds] Submenu The [Thresholds] submenu allows us to set the thresholds at which the various alarms and protection devices of the compressor will cut in, ensuring its correct operation. The first page allows us to configure: 2.3.1 Thresholds The internal pressure below which the compressor is free to...
Page 36 S O F T W A R E M E N U 3.4.4 [Timer] Submenu The [Timer] submenu allows us to set the main timers needed for the basic operation of the compressor. there are in fact other timers, but they are called up in specific submenus linked to their activities. The first page allows us to configure: 2.4.1 Timer Minimum operating time, the minimum time for which the...
Page 37 Since the hardware consists of a number of units, the check is carried out on two different pages. This first page checks the state of the digital inputs on the base module 2.5.1.1 Inputs of MAESTRO xs. ‹ ‹ ‹ ‹ _ X The state is displayed graphically with icons that may have the following...
Page 38 S O F T W A R E M E N U [Pressure probes] Section In this section we can configure and calibrate the pressure probes on the compressor. This first page allows us to configure the working field of the line 2.5.3.1 Line Press.
Page 39 • Automatic Continuous € MAESTRO xs can handle any faults that occur during operation in two 2.6.2 Dryer different ways. we can decide whether to stop the compressor or report Gestione allarme: the fault and attempt to restore optimal conditions.
Page 40 € On this page we can display the settings of: 2.7.4 Inverter The reaction time of the MAESTRO xs as pressure varies in the Reaction Delay Time: • 02sec “neutral zone” mode.
Page 41 € RS-485 The former should be used for networks consisting only of MAESTRO xs compressors; the latter is for networks with such terminals as Maestro and Micro C. The following pages are displayed only if the compressor is configured as Master. All these variables refer to...
Page 42: New Password
However, we must be very careful not to forget this password, because if we do we will have to replace the MAESTRO xs or contact the main service centre. The new password must be created with a combination of the Up and 2.9.1 New Password...
Page 43 S O F T W A R E M E N U 3 .5 [CLOCK] Menu This menu allows the user to start-up the compressor or network of compressors completely autonomously, that is without an operator to carry out start-up manually. The timer can be programmed in two modes: Sono disponibili 2 modalità...
Page 44 S O F T W A R E M E N U For each operating time band we can select the following ways of handling the groups: • • A + B • B + A • Personal • as you can imagine, and if we select the A operating mode only the compressors in group A will be started up;...
Page 45 S O F T W A R E M E N U 3 .6 [LOG] Menu This menu allows service personnel to verify the nature of any faults that may have caused the shutdown of the compressor. Any changes in the programming, carried out either by the user or by service personnel, can also be verified.
Page 46 S O F T W A R E M E N U 3.6.2 [Modifications] Submenu In this submenu, service personnel can verify if configuration parameters have been modified and if these modifications could have caused the fault signalled. As shown on the left, each modification page shows a series of data 4.2 Changes concerning the modified variable, storing: 000020:00:00s...
Page 47: Network Menu
S O F T W A R E M E N U 3 .7 [NETWORK] Menu This menu, which can be accessed only after enabling the control function and only if the compressor is configured as “Master”, allows the network of compressors and its operation to be configured on the basis of the requirements of the end user.
Page 48: Maintenance
Access to this menu is reserved for specialised personnel directly trained <------> by Mattei, and only in case of necessity. The screen on the left displays and modifies: 7.1 Protected total enabled hours for the compressor •...
Page 49 € The display on the left makes it possible to “reset” the access password 7.5 Protected for the “service” menu, restoring the password predefined by Mattei. Password Reset: In extreme cases, following incorrect configuration by service personnel, the unit can be reset to standard configuration.
Page 50: Operating Modes
O P E R A T I N G M O D E S Chapter OPERATING MODES Mattei rotating compressors are set by the manufacturer to supply compressed at the nominal calibration pressure. There are three distinct operating modes: continuous, automatic, modulation.
Page 51: Continuous Mode
When this mode is activated the compressor supplies air in a well-defined pressure band; the maximum and minimum values are preset by Mattei, but can be customised at will using the programming functions available in the [User] menu. When the pressure releases the maximum value (P ), the compressor is unloaded (runs with the suction valve closed) and decompressed to reduce energy consumption.
Page 52: Modulation Mode
In Mattei compressors we can, by using a special valve, set the maximum value of pressure at which the machine will run unloaded. For values slightly less than the maximum, the suction valve is only “partly”...
Page 53 The machine in its OPTIMA version equipped with an INVERTER today represents the maximum in flexibility in compressed air production among MATTEI industrial compressors. From the user’s point of view, the demand for air in a network is generally not constant and undergoes continual variation.
Page 54 V E R S I O N Unlike the earlier unit (Maestro), where with a reference value of zero volts the compressor turned over at a speed set by the inverter, MAESTRO xs handles the reference signal using the following associations: 0 V =...
Page 55 The inverter (frequency converter) is an electrical device that can modulate the tension and frequency of the electrical power supply to the machine. On the basis of the commands of MAESTRO xs and the parameters set by the user, the inverter powers the motor varying its speed of rotation.
Page 56 O P T I M A V E R S I O N P = Line Pressure V = Velocity Q = Output TIME load unloaded Graph 1 If line pressure tends still to increase beyond P even with V = V the compressor is unloaded min , = modifiable;...
Page 57 PID mode, rather than reacting to values of line pressure > Pmax or < Pmin, attempts to maintain pressure close to an intermediate value between the two limits. Operation The average value at which the MAESTRO xs should function is automatically calculated on the basis of the operational values entered for Pmin and Pmax. For example: Pmax = 7.5 bar...
Page 58: Selecting The Operating Mode
O P T I M A V E R S I O N If there is a big drop in the consumption of air, speed will drop to the minimum and if even then the amount of air produced is greater than that consumed, pressure will increase until it reaches the value of Pmax. When this limit value is reached the compressor will be unloaded and only reloaded when the pressure reaches the value of Pmin.
Page 59 Chapter ENABLING THE COMPRESSOR When delivered, the compressor is protected by an alphanumeric code which must be supplied by Mattei and entered when it is first switched on. Without this code nobody can use the compressor; in fact as soon as the compressor is powered up the display in figure 25 is shown with a flashing cursor at the top left.
Page 60 M O V I N G B E T W E E N M E N U S Capitolo SWITCHING BETWEEN MENUS as mentioned in the chapter on the menus, the structure of the software menus is similar to that of the PC. To switch between menus the 4 keys displayed below are mainly used, and these allow us to: Main scroll between pages.
Page 61 M O V I N G B E T W E E N M E N U S Let us see how to switch between menus assuming we wish to modify the value of the maximum pressure of the system. In the same way we can also modify the other parameters in the programme, assuming we are authorised to do so.
Page 62 M O V I N G B E T W E E N M E N U S once selected, the cursor positions itself in front of the variabl to modify. 1.2.1 Settings Press the < > or < > key according to whether we want to decrease or Maximum Pressure: increase the value.
Page 63: Events Submenu
L O G Chapter In the Log menu MAESTRO xs stores data on the compressor; and in particular its stores any faults and modifications to the operating parameters of the compressor. When we access the [Log] menu we see the display below.
Page 64 L O G Warning: In the case of a fault caused by the breakage of a sensor, we recommend, if possible, replacing the sensor with an identical one, otherwise consult the Mattei service personnel. 8 .1.3 Displaying events The occurrence of a fault, as mentioned above, causes either a simple report or a shutdown of the compressor, according to the type of event.
Page 65 L O G Pressing the <Reset> key a second time takes us to a display showing the there is no alarm active (see figure 28): the display of this page shows that the fault has been cancelled and the compressor is again ready to be started up.
Page 66 L O G Report Type Cause Emergency stop Block Digital The emergency button has been pressed on the electrical control panel Low oil level Block Digital Low oil level in chamber (quantity of oil below that needed for correct operation) Motor overload Block Digital...
Page 67 L O G Report Action Type Causa Chamber probe fault Block Software Fault in pressure probe in compressor chamber. Also indicates interrupted connection. Line probe fault Block Software Fault in pressure probe in radiator. Also indicates interrupted connection. Air probe fault Block Software Fault in temperature probe in radiator.
Page 68 L O G 8 .2 Handling video connection Normally all compressor commands are given via the MAESTRO xs keyboard, so a breakdown of this would prevent the user from starting up or shutting down the compressor. If the former case does not present problems for the user, the second could lead to serious problems since the only way of shutting down the compressor would be cutting the power supply.
Page 69: Start-Up Submenu
L O G 8 .3 Start-up submenu This submenu makes it possible to monitor the start-ups of the compressor during its working life; in particular we can monitor: the total number of start-ups of the compressor • 4.3 Startings the number of start-ups during the day of the compressor. •...
Page 70: Managing Passwords
P A S S W O R D S Capitolo MANAGING PASSWORDS MAESTRO xs is protected from tampering by unauthorised personnel by a series of passwords required to access the various menus in particular functions. These can be subdivided into two categories: USER password •...
Page 71: Service Password
P A S S W O R D S 9 .1 SERVICE Password This password is used by service personnel, authorised by Mattei, and must not be given to customers. It gives access to the [Advanced] menu were the various functions can be enabled and configurations carried out according to user needs or to the devices installed on the machine;...
Page 72: Weekly Programming
C O M M A N D S Chapter WEEKLY PROGRAMMING With MAESTRO xs it is possible to start of the compressor automatically using the internal clock. To use this function we must access the [Clock] menu, where there are two selection modes available:...
Page 73 R E M O T E C O M M A N D S 10 .2 5 day programming In the 5 day mode the compressor can only be used on standard working days, that is from Monday to Friday, and with identical times for the entire week. Example: 3.1.1 5 days...
Page 74 R E M O T E C O M M A N D S 10 .3 7 day programming In the 7 day operating mode it is possible to configure operating time bands that differ from day to day for all days of the week.
Page 75: Special Programming
R E M O T E C O M M A N D S 10 .5 Special programming Only in the 7 day operating mode is it possible to configure operating time bands to allow continuous operation for two or more days if there is a need for continuous operation during the week. Example: Monday Band 1 Start-up at 08:00 >>>>>...
Page 76 10 .7 Controlling the times entered MAESTRO xs operates checks on the startup and shutdown times entered. When we enter a start-up time it is automatically set as the shutdown time, which prevents us entering shutdown times earlier than start-up times.
Page 77 R E M O T E C O M M A N D S We will see that when we confirm the “start” hour the value of the “stop” 3.1.1 5 days hour is automatically updated to the same value as the “start” hour. The On1 08:00 Off1 08:00 same thing happens with the minutes.
Page 78 Chapter THE HOUR COUNTERS MAESTRO xs has a series of hour counters that not only determine the hours of operation but also handle the maintenance intervals for materials consumed by the compressor. To this end there are two types of hour counters: operating hour counters •...
Page 79 C O U N T E R S 11 .1 Operating hour counters MAESTRO xs provides the user with three kinds of hour counters with different operating modes. Unlike the maintenance counters, these cannot be modified by the user. The compressor operating hour counters displayed are:...
Page 80 By entering the [1.3.1 Service] menu we can set the maintenance interval that interests us, but always refer to indications from Mattei. When we access the display we see that the cursor is flashing in the top left hand corner of the screen. If we press the <...
Page 81: Maintenance Warnings
It is however possible to reset the maintenance counters ahead of time and singly. However, this means the maintenance must be carried out, since otherwise Mattei will assume no responsibility for any malfunction. To reset a service hour counter ahead of time we must go to the [1.3.2 Service] submenu and press the <...
Page 82: Control Of The System
Chapter CONTROL OF THE SYSTEM MAESTRO xs has a diagnostics system for the apparatus connected to it, thus allowing any faults in the various devices that manage and control the compressor to be pinpointed. All of this can be done from the [Advanced\Debug] menu, where we can carry out the following operations: verify the state of digital inputs.
Page 83 This part of the program allows service personnel to verify the correct functioning of the various devices connected to the digital output of MAESTRO xs (contactors, electrovalves, etc), and also the correct operation of the various command relays of MAESTRO xs.
Page 84 C O N T R O L L I N G T H E S Y S T E M When we enable the first expansion of the system the page on the left 2.5.2.2 Outputs will be displayed; it shows the logical state of: _ _ _ _ Espans.
Page 85 12 .3 Configuring pressure probes MAESTRO xs reads line and chamber pressure through two pressure probes mounted on the machine. These not only gives the working pressure but allow the compressor to be managed.
Page 86 S Y S T E M 12 .4 Configuring temperature probes MAESTRO xs reads temperatures on the compressor through NTC type probes installed in sensitive parts of the compressor. These probes too, like the pressure probes, do various jobs apart from showing temperatures.
Page 87 0° C. the compressor runs unloaded. The dryer is protected by MAESTRO xs through the shutdown of the compressor or of the refrigerating unit according to the setting chosen. We can decide whether the compressor is shut down or not when there is a fault on the dryer: the unit is able to shut down the refrigerating unit if the temperature falls below 0°...
Page 88 >>>> “Ice Alarm” The first report will not trigger any attempt to correct the situation by MAESTRO xs, but after the second report, once the delay time has passed, the dryer unit will be stopped so as to allow the dew point temperature to return to the operating range.
Page 89 While the value for the “ice alarm” report is fixed at 0° C, the value for the “high dew point” alarm is variable and linked to environmental temperature. If environment temperature is high, the critical point becomes higher: Dp > 6° C. Environmental temperature is calculated by MAESTRO xs using the following formula: Ta = To - Tdiff Where: is environmental temperature.
Page 90 14 .1 General MAESTRO xs manages the rotation speed of the compressor through a signal in 0÷10 Vdc current that varies on the basis of the line pressure to be maintained and the preselected operating mode. To do this, MAESTRO xs must be suitably configured.
Page 91 I N V E R T E R 14 .2 Programming We will now give an example of the programming of the MAESTRO xs unit, describing the various functions and any counterindications that may lead to malfunctioning of the compressor during its operation in the plant where it has been installed.
Page 92 T H E I N V E R T E R Once this time has passed, if the pressure is still high the compressor is immediately unloaded, even if it was in the speed modulation phase. 14 .3 Use For correct programming and installation of a compressor fitted with an inverter: we must know the true output values in question;...
Page 93: Network Mode
We will now describe the operating modes mentioned above, then explain how to create and configure a network by programming Maestro and MAESTRO xs; it is in fact possible to connect compressors using the earlier version of the controller so long as the “Master” is always MAESTRO xs.
Page 94 N E T W O R K M O D E Summing up, if pressure remains within the range bounded by Pmin and Pmax, there are no start-ups or shutdowns, while as soon as the pressure moves outside this range Maestro will bring it back within the limits by starting up or shutting down the compressors available.
Page 95 N E T W O R K M O D E 15 .2 Sequence mode (FIFO – First in First out) In the SEQUENCE mode, the first compressor to be started up will also be the first to be unloaded, and when line pressure falls it will be the first to be reloaded;...
Page 96: Configuring The Network
In the figure below is an example of the connection of 3 compressors with MAESTRO xs. If you wish to connect compressors using the earlier version, Maestro, just be careful with the numbering of the terminal board as this is different from that on compressors using the xs version.
Page 97 To assign an address to MAESTRO xs we must first clarify certain concepts: MAESTRO xs is composed of two parts, each of which has its own logical address. Two identical addresses cannot exist in a network.
Page 98 N E T W O R K M O D E This shows the current state of address programming, which is usually: Base Module Address = 1 Video Module Address = 32 15 .4.3 Modifying the address of the base module To modify the address of the base module we must press the <...
Page 99 N E T W O R K M O D E > key; the flashing cursor “ ‹ “ will move over the To move between the variables use the < ↵ first character of the variable to be modified. Once the board and terminal addresses have been entered, press the <...
Page 100 Once the terminals of the compressors forming the network have their addresses, we can programme Maestro xs and select the operating mode desired. First we must decide which of the compressors to configure as “Master”. This compressor will manage the entire network, while the others will be the “Slaves”...
Page 101 N E T W O R K M O D E The final operations to carry out is to subdivide the compressors in the 2.8.5 Group A Network network into two operating groups. This is NOT obligatory, and must be carried out only for certain particular programming operations.
Page 102 N E T W O R K M O D E For each group of compressors we will select the operating mode from 5.1.1 Operating Gr A those described above. Sequence The default operating mode is “Sequence”, but we can modify it Cascade Equalization according to user needs.
Page 103 This information is needed to avoid slowing down the network, since if the system knows that one or more compressors are missing MAESTRO xs will not try to start them up but will select directly the first compressor available.
Page 104 N E T W O R K M O D E In this display we can see the working mode of “Group A”. Gr. A It also shows us the operating state of the compressors in the group. The icons used are identical to those displayed on the home page of the [Monitor] menu.
Page 105 N E T W O R K M O D E 15 .7 Adding an OPTIMA compressor It is also possible to add to the network one or more compressors fitted with an inverter, but there are certain rules to follow for correct management of compressors with this device. We will analyse each operating mode to explain these usage rules.
Page 106 To do this, once the fault is repaired the fault must be <Reset> so that the network knows the machine is available again. If the Master compressor develops a fault, network operation is not stopped because MAESTRO xs continues to manage it. But another compressor will have to be configured as “Master” if the faulty compressor needs to be removed for maintenance in the workshop.
Page 107: Remote Controls
C O M M A N D S Capitolo REMOTE CONTROLS MAESTRO xs allows certain functions concerning the management and state of the compressor to be handled remotely; in particular enabling and disabling, fault warnings etc. 16 .1 Remote enabling Usually the compressor is enabled or disable using the <On/Off>...
Page 108 R E M O T E C O M M A N D S Figure 48 shows a simple connection diagram for the remote enabling command, where a switch is used to create the function. If open the compressor is disabled If closed the compressor is enabled Fig.
Page 109: Remote Reporting
On some models these reports are already present by default as the expansion has already been installed by Mattei; this information can be obtained from the electrical diagram supplied with the compressor. The reports are obtained by closing N.O. contacts.
Page 110 By setting the “Remote Control” option to <YES > in the [Advanced] menu, we can make MAESTRO xs verify the state of the superior controller via the dedicated digital input. If the contact is closed, MAESTRO xs waits for commands from the superior controller, otherwise, if it remains open for more than 15 seconds, it automatically returns control to “Pressure probe”, thus guaranteeing continuity of operation for the...
Page 111 Compressor fans normally operate at low speed so long as the oil temperature remains within the set limits; if the temperature exceeds the limit MAESTRO xs will vary the speed of the fans and set them to high speed. The operation of the fans is shown in figure 50. We can see the change in the speed of the fans as oil temperature (To) varies.
Page 112 (see Hardware paragraph). The expansion must be enabled in the [Advanced\Enabling] menu, and finally the desired working temperatures configured. Note This operation is usually performed by Mattei directly in the factory.
Page 113: Programmable Inputs
Chapter PROGRAMMABLE INPUTS MAESTRO xs has three programmable digital inputs on the n° 2 expansion module that permit the integration of sensors normally not used on standard compressors, such as manostats or various probes. These inputs are available only for compressors fitted with the second expansion or on special compressors designed by Mattei for particular applications.
Page 114 P R O G R A M M A B L E I N P U T S 19 .1 Modifying a Label To modify the descriptive label that will be displayed we must go to the page of the menu relating to the digital input we wish to use.
Page 115: Serial Communication
C O M M U N I C A T I O N Chapter SERIAL COMMUNICATION MAESTRO xs has a number of serial communication ports, which handle various communication functions. In particular we have: ⇒ 1 RS - 485 (tLAN) port for communication between the base module and the expansions.
Page 116 S U P E R V I S I O N Chapter SUPERVISION As mentioned in the previous chapter, MAESTRO xs allows remote control using a PC to carry out local monitoring and send messages over the internet or standard telephones. The advantages of supervision are: Local or remote monitoring of one or more compressors.
Page 117: Standard Protocol
Mattei he may create his own managing software. The only limitation imposed by Mattei is that only the variables needed for monitoring and for modifying the parameters in the menus that can be accessed by the user will be supplied, and access to the other variables will be blocked.
Page 118: Troubleshooting
T R O U B L E S H O O T I N G Chapter TROUBLESHOOTING In this chapter we describe possible faults on the MAESTRO xs. These are divided into: General faults Dryer faults Inverter faults Network faults...
Page 119: General Problems
Replace the relay. defective. Video terminal defective. Check that the base module is correctly powered and the telephone cable correctly connected. MAESTRO xs starts but the display Programme missing. Load the programme (Mattei personnel is blank only). Video terminal defective.
Page 120: Inverter Faults
Electrical protection of dryer Wait for automatic release. compressor has cut in. Dewpoint temperature drops below Dryer compressor is not stopped. Check MAESTRO xs commands. 0° C Command contactor is blocked shut.l Mechanical valve partly blocked. Call Mattei service personnel.
Page 121: Network Faults
RS 485 Port of Master / Slave terminal Replace terminal. compressor defective. As mentioned in the chapter on network operation, if there are communication problems the programme will return to automatic mode. We recommend calling MATTEI service personnel to carry out repairs and permit safe usage.