Page 1 23/06/2021 UNE SRL - VIA MODENA 48/E – 42015 CORREGGIO (RE) - ITALY - VAT No. 02513460358 - T.+39 0522 693566 - F. +39 0522 1483326 - INFO@UNESRL.COM – www.unesrl.com...
Page 2: Table Of Contents
UNE ZHERO connection to the photovoltaic generator ................35 5.9.2. Installing or changing the batteries ......................37 5.9.3. UNE ZHERO - AC Connection to the Distributor grid/Genset – “Backup” ..........40 5.9.4. Connecting the production meter ......................43 5.9.5. Wattmeter connection (mandatory On-grid) and USER ................45 5.9.6.
Page 3 Recommendations for optimal standard use ....................60 7.2. Monitoring................................. 62 7.2.1. Webserver ..............................62 7.2.2. Webapp..............................71 7.3. UNE ZHERO functions............................82 7.3.1. “Standard” function ........................... 82 7.3.2. "Cyclic load" function ..........................82 7.3.3. "Charge hysteresis" function ........................82 7.3.4.
Page 4 ANNEXES................................104 System alarm and error table ............................ 104 MANUALS ATTACHED TO UNE ZHERO ........................105...
Page 5: Information About This Document
Please keep in mind that UNE ZHERO can be used only by those who have read and understood this manual in its entirety; if in doubt, please contact your supplier for clarification.
Page 6: Symbols Used
Also, UNE srl disclaims all liability for damage in the event of failure to comply with the standards for proper installation in force in the country where the machine is installed.
Page 7: Symbols Affixed To The Frame Of Une Zhero
This symbol prohibits the use of water to extinguish fires. This symbol represents the operating range of the system; for ZHERO it extends from -10 to + 40 °C. This symbol indicates a danger of electric shock; before carrying out any other operation, turn off the device and wait for the indicated time before proceeding.
Page 8: Glossary And Definitions
INSTALLER The person who, after appropriate training, has the skills and the ability to work on UNE ZHERO. INVERTER An inverter is an electronic equipment that converts direct current into alternating current.
Page 9 Function that allows in the event of a blackout by the distributor network to keep one or more lines in your home powered. WORKING MODE UNE ZHERO working mode; depending on its programming, it can be off-grid, on-grid with backup. PROTECTION INTERFACE System for disconnecting the photovoltaic system in the event of network anomalies (SPI or NS protection).
Page 10: Recipient Qualifications
The persons working on UNE ZHERO must wear the personal protective equipment required by the laws in force in the country where the device is installed. Prior to the commissioning of UNE ZHERO, the installer shall provide the user with all the information necessary for its proper use, including: ...
Page 11 User Prior to the commissioning of UNE ZHERO, the users shall receive from the installer appropriate notions such  Instructions about the hazards associated with the use of electrical devices;...
Page 12: Conditions Of Use
UNE ZHERO is intended for use in residential, commercial and industrial environments, in 230V (single phase) – 50 Hz TT and TN-S. UNE ZHERO is designed to collect the direct current produced by a suitably sized photovoltaic system, store it and convert it, when needed, into alternating current, which can be used by the appliance.
Page 13  Changing the operating parameters of UNE ZHERO is forbidden; every change must be agreed upon with the local distributor, in compliance with the laws, especially in the case of on-Grid systems.  Do not use corrosive cleaning products or that generate electrostatic charges.
Page 14: Une Zhero Characteristics
Once correctly sized according to your needs and installed, UNE ZHERO will provide the necessary energy to the electrical appliances. UNE ZHERO can work in different modes depending on the requirements of the customer and of the place of installation; some of the working modes are not available in some countries.
Page 15 Since there is no other power grid working in parallel with UNE ZHERO, the only power available to the user is that provided by UNE ZHERO (the amount of power available varies depending on the availability of the photovoltaic module and of the battery and can reach a maximum of 6 kW).
Page 16: Wiring Diagram
The wiring diagram and the corresponding connection terminal block are described in cap. 5.7 3.3. Technical data Installer Maintenance User technician The technical data of UNE ZHERO can be found in the technical datasheet. 3.4. UNE ZHERO nameplate Installer Maintenance User technician...
Page 17: Safety Warnings
Always keep the safety instructions and the manuals supplied with UNE ZHERO at hand. UNE srl disclaims all liability in the event of failure to comply with the standards for proper installation and is not responsible for the state-of-the-art execution of the systems upstream or downstream of the supplied equipment.
Page 18 The “open casing” operations to be carried out on UNE ZHERO shall be performed only by authorised staff. Once the final positioning of the system by the installer is complete, the user is not allowed to move and/or change the position of the system (not even slightly).
Page 19: Personal Protection
Machine off; access to the system is allowed only after 20 minutes from the cut-off. The “open casing” operations to be carried out on UNE ZHERO shall be performed only by authorised staff.
Page 20: System
UNE ZHERO IS NOT designed to power life-support medical devices. Do not use UNE ZHERO in systems where a power outage may cause damage to persons. UNE ZHERO contains hazardous currents and voltage. Full contact protection ensured only by observing the instructions for use and only if: •...
Page 21: Residual Risks
If the maintenance technician observes any safety deficiency that exceeds his competence (e.g. ventilation obstructions, changes to systems outside UNE ZHERO that may imply serious risks to persons), he must report it in writing, highlighting the need to remove it.
Page 22: Installation
5.1. Lifting and transport Installer UNE ZHERO is a large heavy product that requires particular attention during lifting, transport and handling, in such a way as to avoid any damage to persons and property. Transport shall be carried out with adequate equipment, since UNE ZHERO contains parts that are sensitive to impact, vibrations, etc.
Page 23 The lifting equipment used must be able to withstand the weight of the device, over 350 kg. Considering the weight and the overall size of UNE ZHERO, it is necessary to contact specialist staff for its transport, handling, loading and unloading.
Page 24: Tools Required For Installation
5.2. Tools required for installation Installer Maintenance technician Fuses GPV 1000Vcc Set of slotted and crosshead screwdrivers Current clamp Set of hex keys Set of wrenches Hydraulic hand pallet truck...
Page 25: Environmental And General Installation Conditions
Moreover, please keep in mind that:  UNE ZHERO can be used only indoors, in environments suitable for IP20 equipment; do not install the device in inadequate environments or subjected to adverse weather conditions.  Do not expose UNE ZHERO to direct sunlight.
Page 26: Une Zhero Positioning
On floors that can withstand the weight of UNE ZHERO. Also, please ensure a clearance of 50cm above and 30 cm around UNE ZHERO for proper ventilation. UNE ZHERO must be fixed to the ground using the holes available on the baseplate to avoid any overturning.
Page 27: Unpacking
Now cut the strapping seals; c) At this point you should be able to remove the carton from UNE ZHERO; d) If delivered on pallets, use a hydraulic pallet truck suitable for the weight of the system to lift it and place it in the exact installation position.
Page 28: Preliminary Operations Before Proceeding To Electrical Connection
On the market can be found different types of photovoltaic modules that can be used to form a photovoltaic generator compatible with UNE ZHERO. All modules that do not require connecting one of the poles of electrical system to the ground can be used. In fact, if one of the poles of the electrical system was connected to the ground, the insulation resistance control system of UNE ZHERO would detect a fault and block the energy supply from the generator.
Page 29 In the event of a fault during this check, suspend all operations until the problem is solved to avoid any hazardous situation or damage to persons and property. UNE ZHERO is equipped with an insulation resistance check. If the insulation resistance drops below 50 kΩ, the system immediately warns you by flashing the operating light.
Page 30 Before connecting UNE ZHERO, check the electrical system of the customer; the switch on the UNE ZHERO output line is used to ensure the connection between UNE ZHERO and the switches upstream of the electrical system protectors but it is not designed to protect the electrical system of the appliance.
Page 31 20 minutes after the voltage has been removed. Keep in mind that even if all switches are open, UNE ZHERO still contains hazardous voltage. Pay attention to all operations and follow the rules in the dedicated chapter.
Page 32 Further design guidelines The designer and the installer of the system into which UNE ZHERO is incorporated, must check, each within his own competence and in accordance with the regulations in force at the place of installation, the following: ...
Page 33: General Connection Diagram Of The Machine
The general connection diagram of the system is shown below, if further information is required, please contact directly UNE srl (info@unesrl.com). for the On-grid system Figure 5 – Block diagram of UNE ZHERO for the Off-grid system Figure 6 - Block diagram UNE ZHERO in the Off-Grid connection...
Page 34: Internal Overview And Overview Of The Zhero Panel
Inverter fan UNE ZHERO panel. More details later on this section. ZHERO panel Connection system between UNE ZHERO and the production meter, the generator/grid Terminal block input and the appliance. System of slits that favor the natural cooling by limiting the intervention of the main fan Natural fan as much as possible.
Page 35 Representation “ZHERO panel”, with descriptions Figure 8 - Representation of the ZHERO panel Electrical insulation control ISOL This disconnector allows you to turn the system on or off. ON-OFF Alarm button; it turns on only in the event of a malfunction or if the system requires the attention of the user.
Page 36: Connection Description
After performing the preliminary checks described in the previous paragraphs, connect UNE ZHERO to the PV generator. The Cables outside UNE ZHERO, i.e. not protected by its enclosure, must be fitted with firmly secured ducts with a degree of protection suitable for the place of installation.
Page 37 To connect the strings to the string boards, break through the pre-scored knockout holes on the right side of UNE ZHERO. Figure 9 - Detail of the cable entry system The plate must be removed by unscrewing the appropriate screws. Once the plate is reinstalled and cables are...
Page 38: Installing Or Changing The Batteries
100 kg and it cannot be handled by hand. UNE ZHERO is normally delivered with the batteries already installed. However, in some countries, it might be necessary to transport them separately. In this case, the installation should be performed as follows: a) Remove the top panel and battery panel.
Page 39 Once positioned, screw the battery to the fixing tabs. Tabs Figure 12 – UNE ZHERO detail d) Refit the side parts and close the battery panel. e) Connect the batteries with the inverter (pay attention to polarity) and I cavi RJ-45 to corresponding...
Page 40 Figure 13 - UNE ZHERO inverter box Power connector (first battery Power connector (negative BA0 – second battery BA1) above– positive below)
Page 41: Une Zhero - Ac Connection To The Distributor Grid/Genset - "Backup
5.9.3. UNE ZHERO - AC Connection to the Distributor grid/Genset – “Backup” Installer The break through holes for the passage of the AC cables, any signals and data are located along the bottom plate on the right side of UNE ZHERO.
Page 42 – Terminal block AC side Figure 15 The terminal block is just below the ZHERO panel as you open the front casing. In sequence, starting from the right of the reader: Connection of the distributor network/generator in input to the system (not production meter): ...
Page 43 The connection cable between the distributor grid/EG and UNE ZHERO, the correct sizing and laying of which must be checked as required, must be connected to the appropriate terminal block, as shown in the wiring...
Page 44: Connecting The Production Meter
Yellow-Green for earth. The cables outside UNE ZHERO, i.e. not protected by its enclosure, must be fitted with firmly secured ducts with a degree of protection suitable for the place of installation, in accordance with the regulations in force at the place of installation.
Page 45 a) Turn off the inverter using the “inverter On” switch (where applicable). b) Turn of the system by setting the main switch to 0. c) Disconnect the local distributor grid input safely. d) Connect a Class II sheathed cable to the terminal block, clamps “LOO” and “NOO”, as shown in the wiring diagram attached to this manual (tightening torque 2.4 Nm);...
Page 46: Wattmeter Connection (Mandatory On-Grid) And User
Warning: the wattmeter is a single-phase 230V device with a maximum current of 100A. Warning: in the case of three-phase systems, each ZHERO system must have its own wattmeter. Attention: in case of three-phase systems, install the wattmeter along the same line in which the ZHERO system is connected.
Page 47 Figure 18 – Line connection on the wattmeter The wattmeter will only count and measure the energy downstream of the device, everything that happens upstream cannot be managed by UNE ZHERO. Connection of the 485 communication Use an Ethernet cable of category 5e or higher, if it passes next to power cables or underground, use an adequate degree of shielding;...
Page 48 Figure 20 – Wattmeter connection detail Wattmeter connection “WAT” The other end of the cable must be connected to the screw terminals of the wattmeter which are located under a removable plate as shown in the figure: Figure 21 - Terminal block for connection to the wattmeter ...
Page 49 "- " with "- " and "+ " with "+ ". To check correct installation, once the wattmeter is powered and the ZHERO system is turned on, make sure that the RX TX symbol is shown on the wattmeter display in the lower right corner: Figure 22 –...
Page 50 Warning: in the case of three-phase systems, each ZHERO system must have its own wattmeter. Attention: in case of three-phase systems, install the wattmeter along the same line in which the ZHERO system is connected. Usually, the installation of the wattmeter is carried out at the outlet of the distributor meter, so that the system is able to count the energy exchanged with it and reset the withdrawal, but it can also be installed along a secondary line.
Page 51 Figure 24 – Pin of the RJ-45 connector Figure 25 – Wattmeter connection detail Wattmeter connection “WAT” The other end of the cable must be connected to the RJ-45 port of the wattmeter located on the device itself as shown in the figure:...
Page 52 "- " with "- " and "+ " with "+ ". To check correct installation, once the wattmeter is powered and the ZHERO system is turned on, make sure that the RX TX symbol is shown on the wattmeter display in the lower right corner: Figure 26 –...
Page 53: Internet Connection
The ethernet cable outgoing from the system must be taken directly to the router or to a network switch connected to it as shown in the figure: Figure 28 – Render connection of ZHERO to the ROUTER If this connection is not possible, you will need to use a WIFI-REPEATER configured as a Range extender of...
Page 54 Figure 29 - Render connection of ZHERO to the ROUTER via range extender No special features are required for this device, it is still recommended to purchase a mid-range product, possibly which supports the mesh network, dual band 2.4 and 5 GHz and with an antenna powerful enough to reach the router.
Page 55: Starting The Machine
6. STARTING THE MACHINE Installer Maintenance technician Before turning the system on, the installer must send photos of the connections made and report the start of the system to assistance: assistenza@unesrl.com. 6.1. Turning the system on Maintenance Installer technician  check the correct input voltage to the strings (200 –...
Page 56 When the battery is in Warmup phase, it is not active; therefore, brief power shortages may occur during this period; however, these will not affect the warmup phase.  If the machine fails to start without the photovoltaic system, turn it off and contact UNE technical support.
Page 57: Checking The Correct Operation Of The System
6.2. Checking the correct operation of the system Maintenance Installer technician After the initial startup, make sure that the system is carrying out the warmup phase correctly; the system alarm bitmap can be checked via the green status of the system operation lamp; if necessary, use the monitoring software: UneSrlCommunication.
Page 58: Unesrlcommunication
6.2.1. UneSrlCommunication Maintenance Installer technician Use the UneSrlCommunication software to verify correct system operation and ensure correct installation. The “USB type B” cable entry is located in the upper part of the inverter cover Figure 31– Location of the USB input a) STATUSCYCLE From the STATUSCYCLE section it’s possible to verify the correct general functioning of the system.
Page 59 Figure 32 – UneSrlCommunication detail b) INV0 From section INV0 it is possible to specifically identify the inverter alarms. The reading must be done from the bottom right to the left to go up. Check that in “INV0” the alarm bitmap is all 0 and that the Vdc is between 42V and 59V. Figure 33 –...
Page 60 Figure 34 - Wattmeter communication alarm detail c) CONT0 CONT1 e CONT2 To check the communication of the controllers, check the CONT0 CONT1 and CONT2 boxes (depending on whether you have 1 2 or 3 controllers) Attention: only during the day the variables in the side column are enhanced d) BATT0 e BATT1 Check battery communication To check the communication of the batteries, check the boxes BATT0 and BATT1 (depending on...
Page 61: System Operation
Recommendations for optimal standard use User This section contains useful tips to make the most out of your UNE ZHERO. With just a few tricks, you will be able to consume in a “smart” way, saving energy without giving up your own comforts.
Page 62 These are some recommendations for optimal use; the system will work normally even if the battery runs out. Also, the battery installed on UNE ZHERO has a high capacity; most likely, even if high energy-consuming appliances (ovens, washing machines, etc.) were run during the night, the battery would still not run out.
Page 63: Monitoring
Based on this philosophy, you should start using all your household appliances (iron, vacuum cleaner etc), making sure that you have chosen the UNE ZHERO model with the battery capacity that best suits your needs, in such a way that it is enough to cover the electricity demand during night-time also.
Page 64 This section displays all the customers of the retailer, together with their unique identification codes (the first column) and the number of devices owned (the last column). Click on Code to view the customer master data, section that can be edited and updated, as shown in the figure below: Figure 36 - Customer master data Click on the device to check all the devices paired with each of the customers included in the database.
Page 65 Figure 38 - Device dashboard This screen displays the device type (S3 or S6), whether the system is running or in standby, whether the battery is charging/discharging, all device data and any pending reports. System status: Press the gear button on the “Device dashboard” screen to open the system status screen that consists of four sub-screens.
Page 66 (where applicable) and the state of charge of the battery. Regardless of the operation carried out on the Webserver, by clicking on the ZHERO logo at the top of the screen you will return to the home screen.
Page 67 This screen shows:  The battery charge percentage (percentage of charge and, in a smaller font size, the Ah and kWh stored).  The photovoltaic production, expressed as a percentage (in a smaller font size, the ideal one and the actual one, both expressed in kWh).
Page 68 Finally, the last page, the Ethics page. Figure 43 - ETHICS summary page, displaying information since the system was installed This page monitors, for purely indicative purposes, the environmental benefits of self-consumption compared to traditional consumption. Event details On this page is displayed a chart (with configurable fields) that provides information about the operation of the device.
Page 69 The table below shows the last readings made by the Device Server. It is also possible to download an Excel with the last data, should you wish to make custom analyses. For short time intervals (several days), the data will be downloaded at regular intervals of 15 min, while for periods over a week, the data will be downloaded at progressively longer intervals to avoid downloading huge amount of data.
Page 70 To pair the device with the customer, simply enter the “customer code” and the “activation code”; obviously, both of them will also be linked to the retailer who registered them. List of devices: Figure 47 - Paired device control screen In this section can be viewed and monitored all the devices installed by the retailer;...
Page 71 Password change: Figure 49 - Password change screen Enter the old password to change it with a new one. Exit: To exit the webserver and perform a Logout...
Page 72: Webapp
7.2.2. Webapp User To monitor the system, the user must have a valid Internet connection and a device capable of connecting to the network. The portal is a web application that displays pages in html5 + javascript language. In order to take full advantage of all the features, please use a browser of the latest generation. Especially, DO NOT disable the javascript language in the browser used.
Page 73 Figure 51 - Registration request message If the registration was successfully submitted, the following window will appear: Figure 52 - Registration request received message You will receive a mail similar to the one shown below on the address indicated in the registration phase;...
Page 74 Figure 53 - Customer registration request received mail The user will be prompted to set a password in the screen shown below. Set a password: Figure 54 – Password setup window Enter a password of at least 10 characters and click “Proceed”. At this point, the following screen will be shown: –...
Page 75 The customer must pair the device using the unique identification code received with UNE ZHERO. This can be done by clicking on: Devices -> pair device: Figure 56 - Customer device pairing code input Click on “Pair Device”; if the operation is successful, the following screen is displayed: Figure 57 - Customer device pairing The device can be paired with one customer only;...
Page 76 After correctly entering the mail/username, password and the device pairing code, the user will be redirected to the following screen: Figure 59 - Home screen on browser Figure 60 - Home screen on a mobile device From this screen (starting from the top) it is possible to check whether the device is on or off, if there are any pending alarms, whether there is any extra energy available to power the privileged loads (where applicable) and the state of charge of the battery.
Page 77 Regardless of the operation carried out on the Webserver, by clicking on the ZHERO logo at the top of the screen you will return to the home screen. Scroll from right to left to view the following screens: Figure 61 - UNE ZHERO energy flow screen This screen shows: ...
Page 78 On the next screen: Figure 62 - Summary screen of the system daily energy flows  daily kWh consumed by the user (kWh).  daily kWh taken from the grid (kWh).  daily kWh taken from the OG (kWh).  daily kWh exported to the grid (kWh).
Page 79 The Ethics page. Figure 63 - ETHICS summary page, displaying information since the system was installed This page monitors, for purely indicative purposes, the environmental benefits of self-consumption compared to traditional consumption, since the moment when the device was first switched on. Devices: List of devices: This screen displays all the devices that the customer has purchased and paired.
Page 80 Pair a device Figure 66 - Device pairing screen To pair your UNE ZHERO device(s), enter the activation code(s) supplied with the device(s). You will not be able to view the status of the system(s) unless the step above is performed.
Page 81 The edit section can be used to enter all personal data; this will help UNE srl finding the necessary information, as needed. The code cannot be modified since it is used by UNE srl as a unique identified of the customer.
Page 82 Set a new password Figure 69 - Password change screen This section allows changing the password by simply entering first the old one and then the new one twice. Logout Click on Logout to stop the connection with the webserver and exit the site; the system will return to the portal login page.
Page 83: Une Zhero Functions
7.3. UNE ZHERO functions Installer Maintenance User technician 7.3.1. “Standard” function Installer Maintenance User technician The system is designed to primarily supply energy to user in this order: 1- Photovoltaic energy 2- Battery energy 3- Grid energy Normally, the system tries to power the user through photovoltaic energy which, if absent or insufficient, is compensated by the battery;...
Page 84: Photovoltaic Energy Management
User technician In the case of users not connected to the “backup” line, any disruption can in no way be caused by the UNE ZHERO storage system. In the case of users connected to the “backup” line (if provided), it can be verified whether: or the network does not fall into the legal parameters or a shortage of the distribution grid has occurred and the battery is excessively discharged to deliver.
Page 85: Warmup, Battery Charging And Discharging
7.3.7. Warmup, battery charging and discharging Installer Maintenance User technician The battery, completely cold, can take up to 14 hours to become operative; this operation is performed exclusively as a result of:  Power on  System restart  Excessive discharge in the absence of the distribution grid; once it comes operative, except for anomalies, the system will no longer shut it down.
Page 86: Funzionamento Off-Grid
Installatore Manutentore Utente If UNE ZHERO is working Off-grid, the ways in which it can work vary and the exact configuration must be discussed and validated together with the UNE contact. The general you can set the system so that: 1.
Page 87: Security Checks
To carry out the test, simply press and hold the TEST button on the "ISOL" insulation control module on the main panel for "10 seconds" Figure 70 – ZHERO Panel The system main alarm lamp will flash 3 times in sequence followed by 1 second pause and 3 flashes again;...
Page 88: Differential Circuit Breaker Of The Machine
Differential circuit breaker of the machine 7.4.2. Installer Technician User To verify the correct functioning of the lifesaving device on board of ZHERO it is necessary to check every  Disconnect as many loads as possible from the house  Disconnect the photovoltaic system ...
Page 89: What To Do In The Event Of A Failure Or Error
8. WHAT TO DO IN THE EVENT OF A FAILURE OR ERROR User This section contains instructions on what to do in the event of an UNE ZHERO failure. There are two types of system failure and/or error:  The first type can be easily identified and solved directly by the user.
Page 90: String Error
Under adverse environmental conditions (particularly violent storms, etc) the humidity could affect the connectors, creating a temporary leakage to earth that will disappear once the site dries; even if UNE ZHERO restores its normal operation, carrying out a system check is still recommended.
Page 91: Controller Error
User In the event of an inverter error, UNE ZHERO will no longer be able to supply power neither from the generator nor from the battery; in the most severe cases, it will not even be able to remain connected to the local distributor grid (for on-grid systems) or to the backup generator (for off-grid systems), along the “backup”...
Page 92: Ethernet Communication Error
Check the internet connection, the integrity of the cable and the connection to the router. If the problem does not resolve, contact your installer or your internet service provider. The user can continue to use UNE ZHERO. In the event of serious errors, the system will shutdown automatically.
Page 93: System Bypass
System bypass User In the event of a critical malfunction of UNE ZHERO, first of all, contact your installer; he will check the device by means of the internal monitoring system connected to your UNE ZHERO. If an immediate reset is not possible, it is possible to disable UNE ZHERO by manually switching to the distributor grid.
Page 94: Failure To Connect To The Distributor / Generator Network
If the system does not connect to the generator, it is possible that the voltage or frequency are out of the ranges accepted by UNE ZHERO, see chap. 5.9.3 It is advisable to check the generating set is functioning correctly.
Page 95: Technical Support
Installer Maintenance User technician For UNE ZHERO technical support, please access the “Technical Support” section of the website: https://zherosystem.com/i-miei-ticket/ Figure 74 – UNE technical support Read the introductory form carefully. If the information on that page is not enough to solve the problem, register or login by entering the required data in the fields at the bottom of the page.
Page 96 Select: “Click here to send your first ticket” Figure 76 – Ticket registration detail After filling in all the fields in the form, UNE will receive your request for technical support and an operator will reply as soon as possible to the email address provided by you.
Page 97: Maintenance And Update
Inverter  System update To open the casing of UNE ZHERO, use a crosshead screwdriver a n°5 Allen wrench. The system consists of 5 panels that close it completely. They are all removable except for the rear one. Casing fixing screws Figure 77 –...
Page 98: Batteries Maintenance
Wait for 20 minutes before carrying any operation with the casing open. Specific operations:  Remove the “main carter”;  Remove the “battery carter”;  Disconnect the RJ-45 connectors from the ZHERO panel shown in the figure on the right.
Page 99 Figure 79– Position of battery plug and RJ-45 connectors  Disconnect the battery plugs as shown in figure above on the left side;  Remove the battery anchoring screws to the brackets figure below; Figure 80– Position of the battery anchoring brackets ...
Page 100: Controller Maintenance
Remove the “main carter”;  Remove the “battery carter”;  Disconnect the 485 connector located on the ZHERO panel as shown below;  Disconnect the power plugs on the left side; Figure 82– 485 connector and position of the power plugs ...
Page 101  Remove the “inverter lid”;  Disconnect all connections at the ZHERO panel (may vary depending on the system configuration);  Remove the front panel with the inverter fan by disconnecting the power connector of the fan: Figure 84 – Position of power connectors, data plug and system terminal block ...
Page 102: System Update
The system is updated to correct any bug found or to adapt the system to changes in regulations. Usually the system update procedure is carried out remotely via Internet by UNE, notified to the customer via email. To make the changes effective, simply restart the system.
Page 103  Load the provided firmware;  Close the casings;  Turn the system on. At this point the system is updated, it will be possible to check the update on UneSrlCommunication or via webserver on the device page (for installer).
Page 104: Disposal
UNE srl is registered with COBAT (National Waste Collection and Recycling Association) for the disposal of electrical waste. At the end of its life cycle, UNE ZHERO must be stored and disposed of in accordance with the regulations in force in the country where it is installed.
Page 105 12. ANNEXES Installer Maintenance User technician System alarm and error table General alarm table VAR_STATUS_CYCLE_ALLARMI_GENERALI_BITMAP NOME ALLARME TIPO NOTE 0 ALL_UNDERV_DC V_BUS< 42V (PAR.). Non blocking alarm 1 ALL_OVERV_DC V_BUS> 64V (PAR.). Non-blocking alarm; it cuts off the DC section. Manual reset required. 2 ALL_ISOLAMENTO Triggered after T=10min and with R_ISO<200kOhm (PAR) Blocking alarm;...
Page 106 MANUALS ATTACHED TO UNE ZHERO  Battery Manual  Certificate of maintenance  Datasheet UNE SRL - VIA MODENA 48/E – 42015 CORREGGIO (RE) - ITALY - VAT No. 02513460358 – T.+39 0522 693566 – F. +39 0522 1483326 – INFO@UNESRL.COM - WWW.UNESRL.COM...

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