2General features The graphic user interface is composed of: July 2007General featuresThe graphic user interface is composed of:Back-lit LCD Display : 132 x 64 pixel screen with acoustic alarm6 back-lit keys for moving between the screens and for modifying the parametersMicroprocessor control board:This houses the regulation programme in which all of the operating parameters are memorised, displayed and configured by using the graphic user interface.Connection between the microprocessor board and the user interface occurs by means of a 6 pole telephone cable and a RJ11 jack connector.
3User Interface ALARM key: displays and resets the alarms July 2007User InterfaceALARM key: displays and resets the alarmsPRG key: displays the menuESC key: to exit from the various masksUP key: to move through the menuENTER key: to enter the masks and confirm valuesDOWN key: to move through the menu
4User Interface Various information regarding the unit status It is possible to change the language displayed at any time by pressing the ESC + ENTER keys at the same time.The language of the service menu is, however, always English, regardless of the language selected.Various information regarding the unit status
5Symbols & descriptions July 2007Symbols & descriptions
6Switching the unit on / off July 2007Switching the unit on / offLocally from the KEYBOARD:The unit can be switched on locally by pressing the ENTER key on the keyboard. A scroll bar is displayedand also the fan symbol The unit is switched off, by pressing the UP or DOWN on the main mask and by pressing ENTER to confirm SWITCH OFF THE UNIT. The following symbol will be shown,then press ENTER.AUTOMATICALLY:The unit can be switched on by:A remote ON/OFF contactA supervision systemA time band systemAn automatic inversion cycleIf the unit has been set to set-back mode, it will start-up automatically even if the set temperature limits are exceeded
7July 2007Operating parametersPress the PRG key on the control, select MENU PARAMETERS, enter the password and confirm. The next mask shown will be OPERATING PARAMETERS.Cooling / heating settings : these are the SET POINTS for cooling and heating.The proportional bands feature the temperature range in which the unit does not carry out any type of regulation.Humidity / dehumidification settings: these are the humidity values which determine if the unit humidifies or dehumidifies.The proportional bands are the range in which the unit does not carry out any type of regulation.
8July 2007Operating parametersIt is possible to set the temperature and humidity limits at values which can be configured. The unit will issue an threshold limit alarm above and below these limits.This mode consists of an automatic start-up of the idle unit (connected to the power supply) when the following programmable limits are exceed for at least 30 seconds:The set-back mode controls the ambient conditions and is not influenced by the supervision system or the remote control.The fan can be started-up in a cycle in order to ensure that the temperature sensor is surounded by air present in the room.The nominal operating conditions are automatically re-set when the temperature returns to being between the Miniumum Temp +2°C and the Maximum Temp. -2°C.There is, however, a minimum time of 15 minutes before which the unit does not leave set-back mode; this allows stable conditions to be reached and avoids the fans switching on and off too frequently.
9Optional digital input activation This procedure allows the activation of DI 2, 4 and 6, if an optional kit is added at a later date.The following devices are available: fire – smoke sensors, flooding sensor, external high/low temperature and humidity sensors.These inputs can already be in use, since they are multi-functional.
10Alarms Time and date of alarm Alarm number in sequence Description of the alarmIn order to be able to reconstruct the alarm sequence history, the microprocessor stores the last 100 alarm events in its memory.All of the memorized alarms can be read in series by entering the status mask, pressing the UP or DOWN keys and confirming ALARM HISTORY; if there is a clock card present (optional) each alarm event will feature the time and date of when it took place.
11AlarmsThe Scroll compressores need to rotate in the correct direction to avoid reducing efficiency. In single units with a three-phase supply, the network phase sequence can set the rotation direction in the opposite way; in this case, as soon as the unit is connected to the power supply, the microprocessor immediately enters into an alarm state and stops the unit. If this happens, disconnect the power supply and invert the two power phases.Power back after failure is signal only:Following a break in the power supply, the control memorises the mask shown here once the power has been reconnected.
12AlarmsSignal only. This can be delayed during the start-up phase of the unit (the default delay is 15 minutes)Signal only. This can be delayed during the start-up phase of the unit (the default delay is 15 minutes)
13Alarms from optional sensors These are alarms connected to optional sensors and/or configurable digital inputs. (see the Hardware Settings mask).They are signal only.Detected by the Smoke/Fire sensor, they always cause the unit to switch off.Detected by the flooding control module or alarm contact of the condensate drain pump; only causes the unit to switch off if selected among the second level alarms , but not active in stand-by.Detected by a configurable digital input such as “Alarm Signalling”. (DI2, DI4, DI6)Detected by the flooding control module or the external temperature and humidity sensors. (For Amico DX units)
14AlarmsFan alarm: detected by the differential air flow pressure switch (FS). Causes all of the devices to switch off (compressors, electrical heaters, humidifier, fans).Detected by the differential high air flow pressure switch (HFS). Causes all Causes all of the devices to switch off (compressors, electrical heaters, humidifier, fans).Detected by the differential dirty filter pressure switch (PFS), only causes an alarm signal, without intevening with the operation of the unit. Indicates that the air filter needs to be cleaned or replaced.
15AlarmsAlarm detected by the safety thermostat (TSR), causes the electrical heaters to switch off.Only on DX, ES, TC units. Causes the compressors on the circuit indicated (1 or 2) to switch off. Checks the refrigerant circuit and/or refrigerant load and the high pressure switch.Only on DX, ES, TC units. Causes the compressors on the circuit indicated (1 or 2) to switch off. Checks the refrigerant circuit and/or refrigerant loadAlso specifies the number of the circuit.Only for CW units. Detected by the chilled water flow swtich signalling a lack of water within the hydraulic circuit.
16AlarmsOnly for CW units (signal only). Detected by the chilled water temperature sensor when it does not reach the set-point set within 15 minutes of the request for dehumidification.Only for CW units (signal only). Detected by the chilled water temperature sensor when the set high temperature limit is exceeded.Only for TC units: causes the switch-over of chilled water operation (CW) to direct expansion operation (DX). It is also displayed when the ambient temperature sensor detects for the first time that the limit set has been exceeded.
17AlarmsActivated when there is a lack of evaporating pressure, or rather, when the LOP is lower than the threshold set, for a period longer than the Alarms Delay LOP. The number of the circuit is also specified.Activated when there the evaporating pressure is too high, or rather, when the MOP is higher than the threshold set, for a period longer than the Alarms Delay MOP. The number of the circuit is also specified.Activated following an error on the signal released by the low pressure ratiometric pressure transducer or a lack of operating pressure caused by the compressors not starting up.
18AlarmsActivated following an error on the signal released by the NTC low pressure temperature sensor for overheating reading. The number of the circuit is also specified.Activated following an error in the EEPROM memory of the driver. The number of the circuit is also specified.Activated when the unit is in low overheating, for a period longer than the Alarms Delay Low SH. The number of the circuit is also specified.Activated following an error on the tLAN connection, between the EVD400 and the PCO1 control. The number of the circuit is also specified.
19AlarmsActivated when the suction temperature measured on the EVD400 sensor has exceeded the threshold value set in High SH. The number of the circuit is also specified.Visualised only for the alarm history, when the drivers, with the compressors operating, remain disconnected for more than 5 seconds, of if the valve remains completely closed for the same amount of time.Voltage Dip is not an alarm, it’s just a warning. It happens when the compressor is running and in the meanwhile the electronic expansion valve remains closed (0 steps) for more than 4 seconds.If this warning appears, try to manually manage the expansion valve, by keeping monitored the superheating:- If the superheating changes while opening or closing the valve, it means that could be some problems in the refrigerant charge (i.e. too much charged) or something wrong in the driver.- If the superheating doesn’t change while opening or closing the valve, it means that the valve is mechanically locked and it needs to be replaced.
20Humidifier alarmsActivated when the nominal current set in the configuration mask of the humidifier is exceeded. Humidification operation is disactivated.Activated following a lack of electrical absorption detected by the conductability reading.Humidification operation is disactivated.Activated following a lack of electrical absorption. Humidification operation is disactivated.
21AlarmsActivated following an error in the signal released by the relative sensor, disabling the unit function connected to this reading.Causes the compressers and electric heaters to switch off, keeping only the fans switched on.Disables the control of the free-cooling function (only ES units)Disables the electic post-heating heatersDisables the hot water electric post-heating heaters(optional)
22AlarmsSignal onlyDisables the humidification and dehumidification function
23AlarmsSignal only. This may regard: the air filters, the unit, the compressors, the electric heaters and the humidifier. To re-set the alarm it is necessary to zero the counter.NOTE: the mask for setting the alarm threshold and zero the counter can be found in the parameter menu and if the threshold is set at 0 hours, the alarm will not be activatedIndicates problems of communication between units in the LAN and specifies which units are not connected. It may be due to a lack of power, a malfunction in the serial cards or an interuption in the elctrical connections between the units.The alarm appears in the units with the lowest address in the network, both above and below the interruptionIndicates errors in the EEPROM memory, probably due to the cancellation/writing cycles being exceeded. The board needs to be replaced
24Emptying the humidifier cylinder The steam cylinder needs to be periodically cleaned fromlimescale; before removing the cylinder for replacement or cleaning it is necessary to completely drain the water from the boiler.To carry out this operation it is necessary to access the masks of the counter and scroll through the masks until the correct mask is found:• press the Enter key and position the cursor on the comand to be selected;• press the UP or Down key to display the “ YES “ command andpress Enter to confirm;• the message “Wait…” will then appear on the screen;• wait for about 2 minutes, and at the end of the operation the following message will be shown “Cylinder empty, press Enter to exit”;• open the magnetothermic cut off switch of the humidifier and clean/replace the cylinder;• only after having carried out all of the maintanence operations on the cylinder, press the Enter key to re-set the normal operation of the humdifier.
25Memory data operations In the event of an application being substituted or if some data in the EPROM memory is damaged, it is advisable to manually carry out operations on the memory data by following the procedures listed in the relative masks:PROGRAM SETUP: This mask is useful if there has been “fouling” of the data (set-point, configurations, etc.) as it allows the memory to be cleaned (including data regarding the configuration of the HARDWARE SETTINGS of the unit); all of the set point values set are automatically re-set to those pre-set in the factory (see paragraph “DEFAULT VALUES"). After this operation has been carried out, it is necessary to reconfigure the control and change the set points which are required to be different to those set by the default.IMPORTANT: even if only one configuration parameter is changed (and therefore also in the event of an application being replaced) it is necessary to zero the RAM memory by diconnecting the power supply for a few seconds.Al. PAGE CLEAR-UP: Cleaning of the alarm history allows the last100 alarm events which are held in the memory to be cancelled.HARDWARE SET-UP: This allows automatic recognition of the devices connected to the control to be carried out. This operation is useful when adding an option to a board, replacing a sensor or when "NC“ is shown on the display instead of a temperature reading.
26Configuration unit type 1. DX for direct expansion units2. CW for chilled water units3. TC for twin-cool units (direct expansion or chilled water)4. ES for energy saving unitsSMALL UNIT: the new software can also be installed in Amico units. Therefore by setting Small Unit to Yes, the software will be set for operation in an Amico unit; b setting it to No, the software will be set for a Leonardo Evolution unit.UNIT TYPE: this sets the type of unit, direct expansion, chilled water etc.COMPRESSOR: this sets the number of compressors installed in the unitREFRIGERANT CIRCUIT: this sets the number of circuits in the unitHEATERS: if the unit is equipped with electric heaters (3 steps or modulating)HOT WATER COIL / HOT GAS COIL: if the unit is equipped with these coils, set to Yes.
29Flow diagram of masksThe operating parameters contain the temperature and humidity settings.The setting of the low/high temperature/humidity alarmsActivation oif the set-back mode, with settings for switching on/off this function
30Flow diagram of masksThe alarms can be addressed by means of a clean contact with an A alarm and a B alarm.Thanks to this diversity in addressing the alarms, by means of the UG40, it is possible to configure the various alarms, giving each one an alarm output A or B.
31Flow diagram of masksSERIAL COMMUNICATION: this mask allows the unit configuration to be connected to a supervision system:SERIAL ADDRESS: this gives each unit an address which identifies the supervision system.SPEED: the speed at which data is transmitted to the BMS. The data is generally from the client (for pCOWeb set at 19200)PROTOCOL: standard means that the unit is used with a supervision system with variables directly connected to the uniflair system.By setting MODBUS, however, these variables are translated by a new protocol, without the need for a Gateway.
32Flow diagram of masksIn the Leonardo Evolution units and Amico units with pCO1, the LAN card is intergrated with the electronics of the mother board, and it is not therefore necessary to install an additional board.The number of units, up to a maximum of 10, connected to the LAN network.It is possible to set an automatic exchange on a cyclical basis in the event of an alarm and the number of units in the LAN network, from 1 to a maximum of 2.If there are more units connected, it is possible for the temperature which is read to be the average temperature of all the various units.
33Flow diagram of masksIf automatic rotation is set between the various units which are connected, it is possible to choose which alarm will trigger the rotation.On the left of a list of the various alarms, (all of which are configuarable) and their default factory setting.
34Flow diagram of masksIf the unit is equipped with a clock card, it is possible to configure the unit to operate in time and/or weekly bands, the unit will therefore switch on and off depending on if it a weekday or the weekend.
35Flow diagram of masksThe hardware settings allow the type of unit to be configured, and to select the various optionals and additional sensors connected by means of digital inpputs which are made available.If the unit features EC fans (TDAV), it is possible to select the speed by using the UG40.If the fans are not EC fans (TDAR), the speed is modified by moving the wires from the transformer installed in the unit.
36Flow diagram of masksIf the unit is model D or H, this mask allows the model of the humidifier to be selected, the model used for Leonardo Evolution units is KUE2 – the production is 8 Kg/h and the power supply is three-phase 400 V.If the unit is connected by means of an external contact through a 20-50, set the “via input contact” to Yes in order to activate it.If connected to a BMS, set the “only via serial” to Yes in order to activate it.Set the damper indication to Yes if it is present
37Flow diagram of masksThe general settings refer to the operation of the unit, that is, its behaviour in conditions of changing heat loads (Integral time and Anti hunting time).Delay Settings:With the power on: this serves to stop several units switching on all at the same time when the power supply returns. In fact, this could cause problems in the on-site power supply system.The same delay is also able to be set for the alarms concerning temperature/humidity.It is also possible in this mask to modify the two Settings and Service passwords.
38Local networkThe connection with the local network allows the operation of morethan one air cooled chiller to operate within the same area or more thanone water cooled chiller to be connected in parallel in the same system.The number of units which can be connected depends on the programmewhich manages the network, and which can be found in the memory of the Flash Eprom.3. The maximum extension allows connection of the network of up to 500 meters.4. All of the units connected in the network must have the same programme version in the Flash Memory of the board.5. A terminal may be configured in order to be "private" or “shared":a private terminal shows the operating state of the single unit to which it is connected with a telephone cable;a shared terminal shows the operating state of all of the units which are connected to the network.6. Each board has the possibility of “communicating” with a maximum of 3 terminals; in standard applications, there are generally more than two used: one onboard the unit and one installed remotely.
39Local network wiringIt is advisable to make a grounding connection for the shielded cable on the first unit on a metallic point using a screw and a unscrewable washer and to make sure that the length of the shield is as short as possible.Parallel connection to more than one pCO boards of the pLAN network, using a twisted pair shielded cable with an internal anti-disturbance sheath. The cable should be connected to all of the boards by means of the J11 terminal respecting the indicated polarities.
40Example of connection to a remote user terminal In this configuration the following are necessary:1. use two 'T' TCONN6J shunts: one onboard the unit and one near the remote terminal;2. use a 3 pole shielded cable, so that the remote terminal is also powered by the board of unit 1 to which it is connected by means of the TCONN6J;3. insert ferrite near the terminal to reduce any electromagnetic disturbances.With this configuration, the settingof the unit both from the local userterminal and from the remote userterminal can be configured,using the address 32(standard for remote).
41Addressing the user terminal It is possible to configure the address of the terminal only after having powered it by means of the RJ11 telephonic connection. To enter in the configuration mode, press the UP ENTER and DOWN keys at the same time (they can be found in all of the versions) for at least 5 seconds; a mask will be shown which has a flashing cursor in the left hand top corner.To change the terminal address (display address settings) press the ENTER key once and the cursor will move to the address field (nn).use the UP and DOWN keys to select the desired value, and confirm by pressing ENTER .
42pCO: private and shared terminal list allocation At this point, if it is necessary to change the list of the terminals associated to each individual pCO board, the following procedure should be carried out:• enter into configuration mode using the UP ENTER and DOWN keys;• press the ENTER key until the cursor is positioned on the XX field (I/O board address)• use the UPand DOWN to choose the address of the desired pCO board. The values which can be selected are only those of the pCO board effectively on line. If the pLAN network does not work correctly, or if there isn’t a pCO board, it is not possible to modify the field and only “—” will be shown;• The ENTER key moves the cursor from one field to another and the UP and DOWN keys change the value of the current field.The fields in the “Adr” column represent the addresses of the terminals associated with the pCO board, address 11 for the local terminal and 32 for the shared terminal, while the Priv/Shared column indicates the type of terminal.P.S. if the terminal remains inactive (no key pressed) for more than 30 seconds, the configuration procedure is automatically exited without memorizing any changes which may have been made.
43LAN address of the pCO board The address of the board is selected as follows:1. Disconnect the power supply to the PCO board;2. Unplug the J11 terminal (Rx/Tx-, Rx/Tx+, GND);3. Connect a user terminal with the address = 0 to the board of unit number 1.; (see paragraph Configuration of the Terminal);4. Connect the board to the power supply and at the same time keep the ALARM and UP keys pressed down until the following masks appear:5. Press the ENTER key to accept the address of the board shown on the display or use the UP and DOWN keys to change it: set the "pLAN address: 1" for unit 1.(NOTE: if a button is not pressed within 15 seconds, the mask will disappear from the display, and it will be necessary to repeat the procedure from point 1.).6. Press ENTER to confirm ;7. Diconnect the power supply;8. Repeat the procedure from point 1 to point 6 for unit 2 and for the other units connected in the network;9. Reposition the J11 terminals (Rx/Tx-, Rx/Tx+, GND) on the board.
44Example of a connection In the diagram below there is an example of a network featuring 4 units each with its own local user terminal and with a shared remote user terminal 32 which displays the information from unit 1.To display the information of unit 2 rather than that of unit 1, press the ESCAPE + DOWN keys, and continue to press them to show the information for the other units.
45Example of a connection with remote user terminal 1. Set the number of units connected to the Lan network;2. Activate the automatic exchange of the stand-by unit;3. Set the timing cycle to carry out unit rotation; (if the hours are set to 000, a simple test will be carried out putting the units in rotation at 2 minute intervals;4. Set the number of stand-by units (max 2):5. Set YES on the last row, allowing the activation of the stand-by unit to be set, only in the event of an alarm.N.B. The settings are only carried out in the units with the address LAN1, since the information is automatically passed on tothe other units which are connected.The masks shown here, are only shown if the local network is configured, allowing unit operation to be managed by the average ambient temperature readings and with the local values measured by the single sensor present inside the unit.Mode: Local value control of the unit is carried out by the temperature and humidity levels read by the sensors present on the units;Mode: Average value control of the unit is carried out by the average temperature and humidity readings made by the sensors present on the active units which are connected in the local network. If the difference between the average value and the reading of the sensor exceeds the“MEAN/LOC.DIFF.” value, the control automatically moves from “MEAN” to “LOCAL”.NOTE: This setting is not passed on to the other units, so it therefore needs to be set individually on each unit.