Une ZHERO User manual

ZHERO QUICK INSTALLATION GUIDE
Single-phase series 3.0
UNE srl Via Modena, 48/E 42015 Correggio (RE) Italia Tel. [phone] –
[email protected] – https://unesrl.com

UNE srl Via Modena, 48/E 42015 Correggio (RE) Italia
Tel. [phone] – [email protected] – https://unesrl.com
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Carefully follow all the steps indicated in the ZHERO quick installation guide, at the end of the
installation fill in the check boxes; the document must be delivered signed to the customer at the
end of all the procedures described.
1. PLACEMENT OF A ZHERO
 In flat floor;
 in easily accessible places;
 in a position to ensure access to the switches;
 in a position that guarantees the space necessary to carry out maintenance operations;
 in places with air recirculation, no other regulatory compliance is required;
 In floors suitable to support the weight of UNE ZHERO.
2. GENERAL CONNECTION DIAGRAM OF THE MACHINE

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3. CONNECTION BETWEEN A ZHERO AND THE PHOTOVOLTAIC GENERATOR
INSTALLATION
Figure 1 - MPPT inlet hatch
The installation consists in connecting the cables coming from
the photovoltaic system to the pre-assembled MC4 of the
charge controllers, paying close attention not to reverse the
polarity.
To do this, remove the plate (Figure 1) by unscrewing the
appropriate screws of the plate. Once the plate has been
reinstalled and the cables brought inside the system, they can be
connected to the regulators via the MC4 photovoltaic connector.
According to the type of regulator installed, check that the
string voltage is between 90 - 150 V or 200 - 600 V.
ATTENTION: It is necessary to install a PV unloader (SPD),
external to the machine, with Up index Up ≤ 2.5 kV.
4. AC CONNECTION - A ZHERO TO MAINS DISTRIBUTOR/GENERATOR and "BACKUP"
Figure 2 - ZHERO terminal block connection
INSTALLATION
Connection of the distributor / genset network entering the
system (not production meter):
 LG: 230VAC DISTRIBUTOR / GENERATOR phase
 NG: Neutral DISTRIBUTOR / GENERATOR 230VAC
 Yellow / Green terminal: earth connection
Connection of the "backup" line (optional):
 LC: 230VAC Backup Phase
 NC: Neutral Backup 230VAC
 Yellow / Green terminal: earth connection
Connection of the production meter:
 LO: input phase to the production counter on the inverter side
 NO: neutral on inverter side counter input
 LOO: Output phase from the grid side production meter
 NOO: Neutral in output from the grid side production meter
In case of Off-grid application, a jumper must simply be made
between LOO and LO and between NOO and NO.

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5. CONNECTION OF THE WATTMETER AND UTILITIES (MANDATORY ON-GRID)
The connection cable of the wattmeter to the system must not exceed 50m in length.
ATTENTION: the wattmeter is a single-phase 230V device with a maximum current of 100A.
ATTENTION: in the case of three-phase systems, each ZHERO system must have its own wattmeter.
ATTENTION: use twisted cables; do not use Cross cables.
Figure 3 - Utilities and wattmeter connection diagram
Connection of AC to the wattmeter
From the exchange counter, connect Phase and Neutral to terminals 1
and N below it:
 Connect the direct line to ZHERO in the corresponding terminals 2
and N below;
 Connect the output utilities from the wattmeter then downstream
of the corresponding terminals 2 and N.
Figure 4 Wattmeter communication connection diagram
485 Wattmeter-ZHERO communication connection
 Connect an RJ-45 cable to the left RJ 45 input on the device as
shown in the image;
 Connect the other end of the cable to the RJ-45 port on the ZHERO
"WAT" panel;
 Make a jumper between terminal 3 and 5 of the wattmeter.
6. INTERNET CONNECTION
Through Router
Perform the following operations on the router:
 Set the router in DHCP;
 TCP and UDP ports opening: 9090 related to the IP address
associated with the ZHERO by the router (in DHCP);
 Add the URL "HTTPS: \\ portal.zherosystem.com" to the
navigation exclusions
Before connecting, check that the cable connection is working.
The ethernet cable outgoing from the ZHERO system must be
brought directly to the router or to a network switch connected to it
as shown in the figures.
Through range-extender

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7. ZHERO ASSOCIATION WITH WEBSERVER
 The installer will have to request, if not already registered with his own account, his registration directly to UNE email:
[email protected] that will provide him with a username and password; by accessing the portal: https: \\
portal.zherosystem.com you can enter the code "WEB Activation: xxxxxx" which is located under the front cover, above the
main fan and start monitoring the system.
 The end customer will have instead to register independently on the site: https: \\ portal.zherosystem.com and the
association by entering the same code "WEB Activation: xxxxxx".
8. CHECK CONNECTIONS
Check mains voltage (230V) on terminals LG – NG but do not supply;
Verify that the production counter is enabled;
Check that the network is present on the wattmeter and the communication cable connected;
Check the connection from the Internet cable to the “ETH” port;
Check the tightening of the screws of any backup line from LC - NC;
Verify that the photovoltaic system is enabled on entry to the system.
9. CONFIGURATION OF THE MAIN PANEL FOR THE FIRST STARTING
SWITCH PANEL OPERATIONS
Figure 5 - UNE ZHERO main panel
 Check that the 230 V grid power supply on the LG - NG terminals
has been disconnected for at least 30 seconds.
 Move the "BYPASS" switch to position 1 (Up) to put the loads of
the LC-NC line under the backup line (if the backup line is
provided);
 Enable the "INV" circuit breaker;
 Enable all users downstream and upstream of the system
(external to the system);
 Set the "ON-OFF" switch to ON;
 Set the 230V mains power supply on the LG - NG input terminals.
CHECKS
Verify that the System Main Light remains green. It is advisable,
after about a week, to remotely check that all devices are
communicating and that the system is perfectly in line with what
is expected. (Photovoltaic production, battery charging and
discharging, etc).
Verify that the system turns on and begins to warm up the battery
(this can take several minutes).
IF THE MAIN LIGHT OF THE SYSTEM REMAINS RED, YOU WILL FIND THE
POSSIBLE SOLUTIONS IN CHAPTER 10.
LEGEND
ISOL:
Insulation control
ON
-
OFF:
Disconnector, allows you to turn the system on or off.
ALL:
Alarm button, allows you to reset a system alarm that is signalled by the lighting of the red alarm lamp.
INV:
Differential magnetothermic output from the inverter, it does not cause the
interruption of the user but the blocking of the
supply from the battery + photovoltaic source.
BYPASS:
Line diverter that allows you to bypass the "backup" line covered by the system. Upwards the system is covered by backup,
in the central position the line is interrupted and downwards the line is directly connected to that of the distributor.

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10. OPERATION CHECK
MONITORING SOFTWARE
Figure 6 - location of the USB port
To verify the correct functioning of ZHERO use the
UneSrlCommunication software.
The USB type B port for ZHERO monitoring is located in the upper left
part, under the main panel, as indicated in the Figure 6.
The UneSrlCommunication software and the relative instruction
manual with le legend of each alarm "Manual - UneSrlCommunication"
can be downloaded from the site https: \\ unesrl.com in the
"DOWNLOAD AREA".
The reading of the bits through UneSrlCommunication must be carried out from the bottom right to the left
upwards.
DETAIL: STATUSCYCLE ALARMS VERIFY
Figure 7 - Detail of machine states "STATUSCYCLE "
If only those bits are active, the system is working correctly:
Agen0 - Bit 3 will always be active (not relevant)
Agen8 - bit 10 will be active until the system has finished
warmup;
Agen8 - bit 15 will be active if the irradiation sensor is absent;
Agen16 - bit 18 will always be active for machine status;
Agen16 - bit 22 could be active (not relevant).
DETAIL: WATTMETRO COMMUNICATION VERIFY
Figure 8 - Wattmeter led light indication
To check the communication between the wattmeter and UNE ZHERO:
Check that the indicator light indicated in Figure 8 on the side is
flashing intermittently.

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DETAIL: ALARM INV0 VERIFY
Figure 9 - Inverter alarm details
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 bitmap alarm is all 0.
DETAIL: ALARM MPPT VERIFY
Figura 10 - Controller alarm details
To check the communication of the controllers, select the CONT0,
CONT1 and CONT2 boxes (depending on whether you have 1 2 or 3
controllers) if it is day, check that the variables in the side column are
set:
CONT0
CONT1
CONT2
DETAIL: ALARM BATTERIES VERIFY
Figura 11 - Battery alarms detail
To check the communication of the batteries, select the boxes BATT0
and BATT1 (depending on whether you have 1 or 2 batteries) and
check that the data is regularly updated:
BATT0
BATT1

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11. SUPPORT
 System installation: UNE is not responsible for the correct installation of the photovoltaic system and the Zhero system;
any requests for assistance must be received in writing by entering all the system data and a detailed description of the
anomalies, to the email address: [email protected].
 System start: after starting the system, in case of persistent anomaly highlighted by the main red light, carry out the checks
described in chapter 10, and if the problem persists, send an email to: [email protected].
 AUTOTEST: no network interface self-test must be performed, already installed within the system, a request must be sent
to the email: [email protected] to receive the test certificate to be used for network connection practices.
 Manuals and documentation: the ZHERO manual include all complete instructions for installation, use and maintenance of
the same and can be downloaded from the website: https: \\ unesrl.com in the section: "DOWNLOAD AREA".
 Internet connection: if the system is not online for more than 48 consecutive hours, before opening a technical assistance
ticket, it is necessary to check that:
o The stability and range of the connection;
o The system is turned on;
o Check the settings indicated in chap. 6;
o The router's firewall is not blocking the connection (common problem);
o The Internet service provider has not introduced some blocking and / or some filtering (frequent problem);
o Try a system restart by turning the system off and then on again after 30 seconds.
UNE will not deal with such operations and will not consider requests for assistance regarding this issue until all of the
following activities have been carried out.
 Request for detailed technical information on the ZHERO system: they must be sent to the following address:
[email protected]. Telephone consultations are not carried out.
Thank you for choosing UNE srl products and for having carefully followed all the steps
necessary for correct installation.
Apply installer label with telephone number for customer assistance
Date: Place: Stamp and signature of the operator:
Document to be kept by the customer