Delios DLS 300, DLS 600, DLS 450 Instruction Manual

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INSTRUCTION MANUAL

- OPERATION

- INSTALLATION

- MAINTENANCE

Carefully read these instructions before first use.

TRANSLATED FROM THE ORIGINAL IN ITALIAN LANGUAGE

Code: 240,010.0001 Date: 30/09/2017 Rev.: 01

DLS 300 / 450 / 600

Code 240.010.0001

DLS 300 / 450 / 600

IMPORTANT SAFETY INSTRUCTIONS

This manual contains important safety information, which must be followed during the installation and maintenance operations of the equipment. It is compulsory for the operators to read this manual and to strictly follow the instructions contained herein, as DELIOS s.r.l. shall not be accountable for injuries caused to people and/or damages to things or to the equipment if the following instructions conditions are not followed.

DLS 300 / 450 / 600

Code 240.010.0001

PROGRAMMABLE LOADS CONTROLS (*)

(*) - Optional

BATTERY PACK PV STRING 1 PV STRING 2 MAINS MOTOR GENERATOR (*)HOME LOADS

Fig. 00

Code 240.010.0001

DLS 300 / 450 / 600

Fig. 01

DLS 300 / 450 / 600

Code 240.010.0001

1 - DC SWITCH

2 - AC GRID CIRCUIT BREAKER

3 - GEN (OPTIONAL) CIRCUIT BREAKER

4 - AC OUT CIRCUIT BREAKER

5 - AC BYPASS SWITCH

AC GRID AC BYPASSAC OUTGEN

1 2 3 4 5

Fig. 02

Code 240.010.0001

DLS 300 / 450 / 600

+ BATTERY -

AC GRIDMETER

AC OUTGEN

1 2

1 - BATTERY INPUT

1 2 3 6 7 8 94 5

2 - BATTERY TEMPERATURE SENSOR

3 - EXTERNAL WIRING (REFER TO “ACCESSORIES”)

4 - PV1 STRING INPUT

5 - PV2 STRING INPUT

6 - PRODUCTION METER CONNECTION

7 - PUBLIC AC GRID INPUT

8 - MOTOR GENERATOR INPUT (OPTIONAL)

9 - HOME LOADS AC OUTPUT

Fig. 03

DLS 300 / 450 / 600

Code 240.010.0001

+ BATTERY -

AC GRIDMETER

AC OUTGEN

1 2

48V

PV1

PV2

HOME LOADS CONTROL

GEN ON/OFF

017763

Fig. 04

Code 240.010.0001

DLS 300 / 450 / 600

6 x

Fig. 05

DLS 300 / 450 / 600

Code 240.010.0001

AC OUT

METERPEAC GRID

METER

AC GRID

AC OUT

017763

N L

017763

N L PE

Fig. 06

Code 240.010.0001

DLS 300 / 450 / 600

PV1 PV2

Fig. 07

DLS 300 / 450 / 600

Code 240.010.0001

Fig. 08

Code 240.010.0001

DLS 300 / 450 / 600

HL0

12 3456

FUSE 100A

FUSE MAX 100A

80 V

48V

1 2

NTC BATT + NTC BATT -

GND AL_EXT

3 4

T_D S_E

5 6

PERICOLO

FUSE MAX 100A

80 V

RS485 CAN

23456

FUSE 100A

48V

RJ45

1Green/White Tracer

RJ45 Pin#

T568A

2Green 3

Orange/White Tracer

Blue

GND

CAN-H CAN-L

Blue/White Tracer

Orange

Brown/White Tracer

Brown

AB0

GND CAN-L CAN-H

A B

GND

Green/White Tracer

RJ45 Pin#

T568B

Green

Orange/White Tracer

Blue

GND

CAN-H CAN-L

Blue/White Tracer

Orange

Brown/White Tracer

Brown

Fig. 09

DLS 300 / 450 / 600

Code 240.010.0001

GEN

N L

GEN ON/OFF

REMOTE CONTROL

(OPTIONAL)

Fig. 10

Code 240.010.0001

DLS 300 / 450 / 600

12 3456

FUSE 100A

1 2

NTC BATT + NTC BATT -

GND AL_EXT

3 4

T_D S_E

5 6

T_D

GND

S_E

PERICOLO

IT_CEI O-21

R >100k

GND

GND GND

Fig. 11

DLS 300 / 450 / 600

Code 240.010.0001

GENLD1 LD2LD3 LD4AUX

AUX GENERATOR

HOME APPLIANCES

COMMON

SERVICE USE ONLY

GENLD1 LD2LD3 LD4 AUX

NO (NORMALLY OPEN)

NC (NORMALLY CLOSED)

MAX 4A - 250V

Fig. 12

Code 240.010.0001

DLS 300 / 450 / 600

DELIOS s.r.l. Corso Noblesville, 10

CITTADELLA (PD) - ITALY

DELIOS s.r.l. Corso Noblesville, 10 CITTADELLA (PD) - ITALY

Fig. 13

DLS 300 / 450 / 600

Code 240.010.0001

TABLE OF CONTENTS

1 INTRODUCTION ...........................................................................................................................19

1.1 Fields of Application ..............................................................................................................19

1.2 Symbols Used in This Manual ..............................................................................................19

1.3 Warranty................................................................................................................................19

2 CAUTIONS ....................................................................................................................................20

2.1 Operating Environment and Restrictions ..............................................................................21

2.2 Dismantling, Removal and Disposal .....................................................................................22

2.3 Protecting Staff and Third Parties .........................................................................................23

2.4 Protection from Electric Shock .............................................................................................. 24

2.5 Electromagnetic Fields and Interferences .............................................................................24

2.6 IP Protection Rating ..............................................................................................................24

2.7 Signage and Data Decals .....................................................................................................24

2.8 Residual Risks ......................................................................................................................25

3 GENERAL DESCRIPTION ............................................................................................................26

3.1 The DSL System ...................................................................................................................26

3.2 Protective Devices ................................................................................................................26

3.2.1 Anti-islanding ........................................................................................................................26

3.2.2 Earth Leakages of PV Panels ...............................................................................................26

3.2.3 Converter Earth Leakages ...................................................................................................26

3.2.4 Automatic Interlock System (IT) ............................................................................................26

3.2.5 AC BYPASS Switch ..............................................................................................................27

3.2.6 AC GRID and GEN Inputs Magnetic Thermal Circuit Breaker (optional) ..............................27

3.2.7 AC OUT Output Magnetic Thermal Circuit Breaker .............................................................27

3.2.8 DC Inputs String Switch ........................................................................................................27

3.2.9 String Fuses ..........................................................................................................................27

3.2.10 Battery Galvanic Isolation .....................................................................................................27

3.2.11 Battery Overcurrent Protective and Safety Fuse ..................................................................27

3.2.12 Battery Temperature Sensor .................................................................................................27

3.2.13 Automatic Battery Switch .....................................................................................................27

3.2.14 Additional Protective Devices ...............................................................................................27

3.3 Touch-screen Control Panel ..................................................................................................28

4 INSTALLATION .............................................................................................................................28

4.1 Lifting, Transport and Unloading Instructions ........................................................................28

4.2 Unpacking and Checks ......................................................................................................... 29

4.3 Checking the Box Contents ..................................................................................................29

4.4 Positioning the DLS ..............................................................................................................29

4.5 Mounting the DLS .................................................................................................................30

4.6 Connection ............................................................................................................................30

4.6.1 Cautions ................................................................................................................................30

4.6.2 Connection to the AC National Electricity Grid ......................................................................31

4.6.3 Connecting the PV Panels ....................................................................................................33

4.6.4 Connecting the 48V Lead-acid Battery .................................................................................34

4.6.5 Connecting the 48V Lithium Battery .....................................................................................35

4.6.6 Connecting an Auxiliary Power Generator (optional) ............................................................36

4.7 Switching on the System ....................................................................................................... 37

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5 CONTROL PANEL ........................................................................................................................38

5.1 General Information ..............................................................................................................38

5.2 “HOME” Screen ....................................................................................................................39

6 PROGRAMMING THE SYSTEM ...................................................................................................41

6.1 “MENU’” Structure and System Navigation ...........................................................................41

6.2 “MAIN” Menu ......................................................................................................................... 42

6.3 “LOGIN/LOGOUT” Menu ......................................................................................................43

6.4 “GRAPHICS” Menu ............................................................................................................... 44

6.5 “INFO” Menu ......................................................................................................................... 45

6.6 “SETTINGS” Menu ................................................................................................................ 46

6.6.1 “MAIN” Menu .........................................................................................................................46

• “DATE AND TIME” Menu ......................................................................................................47

• “AUTO-TEST" Menu .............................................................................................................47

• “TOOLS’” Menu .....................................................................................................................47

• “LANGUAGE” Menu ..............................................................................................................47

• “FIRMWARE UPGRADE” Menu ...........................................................................................47

• “BACKUP/RESTORE” Menu ................................................................................................48

6.6.2 “SYSTEM” Menu ...................................................................................................................48

6.6.3 “GRID CODE” Menu .............................................................................................................48

6.6.4 “BATTERY” Menu .................................................................................................................48

• “LEAD” Menu ........................................................................................................................48

• “LITHIUM ” Menu ..................................................................................................................49

6.6.5 “HOME AUTOMATION” Menu ..............................................................................................49

6.7 “EXPORT” Menu ...................................................................................................................50

6.7.1 “DATA” Menu.........................................................................................................................50

6.7.2 “EVENTS” Menu ...................................................................................................................50

7 ACCESSORIES .............................................................................................................................50

7.1 EXTERNAL ALARM Signal Connection ................................................................................50

7.2

Connection between the REMOTE TRIPPING and the EXTERNAL SIGNAL (Italy - CEI 0-21)

...51

7.3 Home Automation PCB (optional) .........................................................................................51

7.3.1 Installation and Connections .................................................................................................51

7.3.2 Programming the Contact Controls .......................................................................................52

7.4 CAN/RS485 board (optional) ................................................................................................52

7.4.1 Installation and Connections .................................................................................................52

8 MAINTENANCE ............................................................................................................................52

8.1 General Information ..............................................................................................................52

8.2 Switching off the System ......................................................................................................53

8.3 Replacing the Battery Fuse ...................................................................................................53

8.4 Disinstallation ........................................................................................................................54

8.5 Disposal ................................................................................................................................54

9 TROBLESHOOTING .....................................................................................................................55

10 TECHNICAL DATA ........................................................................................................................58

10.1 Nameplate .............................................................................................................................58

10.2 Technical Features ................................................................................................................59

DLS 300 / 450 / 600

Code 240.010.0001

1 INTRODUCTION

1.1 Fields of Application

This installation manual is intended for qualied installers. The manual describes how to safely install, connect and start up the following DLS systems:

• DLS 300

• DLS 450

• DLS 600

1.2 Symbols Used in This Manual

Imminent dangers causing serious injuries. Danger of death.

Hazardous behaviours that could cause serious injuries.

Hazardous behaviours that could cause death.

Behaviours that could cause minor injuries to people or minor damages to things.

The notes preceded by this symbol relate to technical issues and ease operations.

These instructions are intended for qualied engineers.

1.3 Warranty

Warranty Conditions Provided by DLS

Our quality control program ensures that each DLS product is manufactured exactly to specications and

is subjected to exhaustive tests before leaving our factory.

Five Year Warranty

The warranty provided by DELIOS s.r.l. lasts for 5 years from the DSL system purchase date. The warranty conditions are based on the EU Directive 99/44/EC, except for any statutory rights.

Extended Warranty

For all DLS systems, customers can purchase a 5 year extension of the manufacturers' warranty, for a maximum of 10 years. The warranty extension can only be purchased within 1 year from the DLS system delivery date.

Warranty terms

Should DLS become faulty during the warranty period, one of the following services will be provided, at the discretion of Customer Support Service (materials will be supplied for free, but labour costs will be charged):

• Repair work carried out on DELIOS s.r.l. premises

• Repair work carried out on the installation site

• Replacing the defective unit with a new one (or one of the same value according its model and age)

Code 240.010.0001

DLS 300 / 450 / 600

Disclaimer

Warranty claims and responsibilities for direct or indirect damages are excluded if caused by:

• transport or storage damages

• incorrect installation and/or commissioning

• modications, changes or attempted repairs carried out by untrained and unauthorised staff

• incorrect use or inappropriate operation

• inadequate device ventilation

• failure to comply with applicable safety standards

• force majeure (such as lightening, overvoltages, storms, res)

• aesthetic imperfections not affecting the system operation

• damages caused by humidity and/or other environmental conditions

The installer/retailer who installed the DLS must return the faulty system to DELIOS s.r.l. Customer Support Service, who reserves the right to replace the unit with another unit of equal or higher technical specications, at their own discretion.

Disclaimer

All rights related to the contents of this manual are owned by DELIOS s.r.l.. By using this manual, you accept the terms of this disclaimer clause. Every effort has been made by DELIOS s.r.l. to ensure the accuracy of this manual. However, DELIOS s.r.l. cannot accept responsibility for any errors or omissions in this manual, nor for any damages caused by or associated with its use. No information published in this manual can be copied or published in any way or by any means without prior written authorization by DELIOS s.r.l.. The information contained in this manual is subject to changes without notice, DELIOS s.r.l. does not have any obligation to notify anything. After its publication, DELIOS s.r.l. does not have any obligation to update or keep updating the information contained in this manual, and reserves the right to improve this manual and/or the products described in this manual, at any time and without notice. We welcome your feedback or advice if incorrect, misleading or incomplete information is found within the manual.

2 CAUTIONS

These instructions are provided for qualied engineers.

Before carrying out any operations, make sure to have read and understood this manual. Do not make changes and do not carry out maintenance operations not described in this manual.

The manufacturer does not accept responsibility for injuries to people and damages to things occurred

because the information within this manual has not been read and followed.

The installation procedure must be carried out only by qualied staff.

The operations described herein must be carried out only by qualied engineers. The customer is civilly liable for the qualications and mental and physical condition of members of staff

who operate this equipment. They must always use personal protective equipment required by the legislation enforced in the destination country and anything else provided by their employer.

The DLS system can also operate without being connected to the mains (off-grid). In these conditions,

default factory setting requires the inverter output to be automatically connected to ground by an internal device before starting the off-grid operation. However, should the factory setting need to be changed for

specic requirements, the inverter output will be oating.

When exposed to the sun, PV panels can produce dangerous voltages. We recommend that the proce-

dures required to make the working area safe are carried out.

DLS 300 / 450 / 600

Code 240.010.0001

The DLS system can handle lead-acid and lithium 48V batteries. The batteries produce electricity and may

cause electric shocks or res in the event of a short-circuit or incorrect installation.

The batteries must be installed in a suitable area, compliant with local regulations. The installation area

must provide adequate ventilation and be free from naked ames and sparks as they could produce potentially explosive gases during the system operation.

Opening the DLS system, with the exceptions listed in this manual, is strictly prohibited.

The equipment must not be installed by staff who are unqualied, under the inuence of alcohol or drugs,

have prosthetic heart valves or pacemakers.

For any queries or problems during the system operation, even if not described herein, please contact

qualied staff.

The DLS system cannot be modied in any way. DELIOS s.r.l. cannot accept responsibility if the DLS sys-

tem is incorrectly installed and shall not be liable for the equipment located upstream or downstream of the system supplied. Overriding the safety devices is extremely dangerous and will relieve the manufacturer from all responsibilities for injuries to people and damages to things.

A rst aid kit must be provided. Do not underestimate burns or wounds.

2.1 Operating Environment and Restrictions

Each system must only be used for operations it was designed for, by following the instructions and within the ranges specied in the nameplate and/or in this manual, in compliance with safety national and international standards. Any use different from the intended use specied by the manufacturer will be regarded as entirely inappropriate and dangerous and the manufacturer will therefore accept no responsibility.

This equipment is an integrated system able to convert direct current (DC), produced by a PV generator and by a battery, to alternating current (AC) suitable for being used by local loads and/or fed to the national grid.

Check the regulations applied by the electricity provider.

Check the solar panels manufacturer's instructions. Check the batteries manufacturer's instructions.

Operating Range Limits:

The DLS system can be used only with PV systems which do not require one of the two poles to be ground-

ed. DLS can exclusively be used with PV systems compliant with Class A specic requirements, as stated

by standard IEC 61730. Do not connect to PV1 and PV2 inputs any other energy source to the inverters in addition to the modules mentioned above. The current leakage during normal operation must not exceed the limits stated in the

technical specications.

The DLS system can be connected, by using the BAT input, to a 48V lead-acid battery acting as a storage device for the excess energy produced by the PV generator. The energy stored is then released into the system, which will make it available to local loads, at the right and most appropriate time, in order to fully or drastically reduce the energy drawn from the electricity grid.

The DLS system can be connected to the electricity grid only in the countries it is enabled for. The DLS system can be used only if all the technical specications are complied with.

Code 240.010.0001

DLS 300 / 450 / 600

Improper or unauthorised use:

Although our equipment is manufactured to the highest standards, all electrical equipment can catch re.

The DLS system must be installed indoors.

The optimal operation of the DLS system is ensured at a maximum ambient temperature of 40°C (104°F).

The DLS system must be transported and stored in indoor locations with a temperature range of -30°C to +70°C (-22°F to 158°F).

The DLS system must be used in locations with no acids, gases or other corrosive substances.

The DLS system must be used and stored in locations with relative humidity ranging from 5% to 95% without condensation.

The DLS system must be transported in locations with a relative humidity ranging from 5% to 95%.

The DLS system must be used and stored in locations with atmospheric pressure ranging from 86kPa to 106kPa.

The DLS system must be transported in locations with atmospheric pressure ranging from 70kPa to 106kPa

The DLS system must be used at a maximum altitude above sea level of 3000m (9750 feet). For altitudes

higher than 2000m, because of the air being more rareed, specic conditions may arise, which must be

taken into consideration when choosing the site of installation. All installations at altitudes higher than 2000m must be assessed case by case by taking into consideration the following critical issues:

• less efcient cooling:

• reduction of air electrical resistance and, when high voltages are present, the formation of electric

arcs:

• presence of cosmic radiations, which may affect the correct operation of electronic components.

2.2 Dismantling, Removal and Disposal

DELIOS s.r.l. DOES NOT accept responsibility for equipment disposal. The Customer must dispose of po-

tentially hazardous substances in compliance with regulations enforced in the country of installation and, in any case, must avoid to cause any type of pollution. The types of materials which make up the components of the equipment must be disposed of in suitable rubbish tips.

Component disposal Construction materials

Frame, brackets, mountings Aluminium / Iron

Paint RAL

Electric cables Copper / Rubber

Electronic PCBs FR4 / Copper

DLS 300 / 450 / 600

Code 240.010.0001

2.3 Protecting Staff and Third Parties

The equipment has been built in compliance with the strictest safety standards and is tted with safety de-

vices able to protect its components and the operators. For obvious reasons, the manufacturer cannot envisage all the potential types of installations and environments where the equipment will be installed; the Customer must therefore clearly inform the manufacturer of specic conditions of installation. DELIOS s.r.l. cannot accept responsibility if the DLS system is incorrectly installed and shall not be liable for other systems located upstream or downstream of the equipment supplied.

• The operators must be correctly informed. The operators must therefore read and follow the technical

instruction contained in this manual and its enclosed documents.

• The instructions provided in this manual do not replace the safety regulations and the installation and

operational technical data printed on the products, nor do they replace the current safety standards enforced in the country where the equipment is installed and the rules dictated by common sense.

• The manufacturer is available to provide the theoretical or practical training to operators, both on their site or on the customer's premises, as specied at the time of drawing up the contract.

• The equipment must not be used if any operating fault is identied.

• Temporary repairs should be avoided; repair work must be carried out only with genuine spare parts,

which must be installed according to the intended use.

• Responsibilities arisen from commercially purchased components are delegated to the manufacturers

of such components.

Avoid touching the inverter enclosure during the equipment operation.

The inverter enclosure could overheat during its operation and cause burns by contact.

Guards or covers can be removed only 10 minutes after disconnecting the inverter from the power supply

to allow its components to cool down and any static electricity storage devices to discharge.

As soon as it is switched off, the surface of the equipment could be hot, therefore great care must be taken.

In the event of a re, CO2 foam re extinguishers must be used and self vacuum systems must be used to put out res in enclosed spaces.

Should the noise level exceed legal limits, the working area must be circumscribed and all the people who

have access to the area must wear ear defenders or ear plugs. The noise level produced by the inverter in normal working conditions is: < 50db.

During the installation procedure, special attention must be paid to xing the equipment and its components. During this stage, circumscribing and preventing access to the installation area is recommended.

Clothing and PPE Worn by Staff

Installers are recommended to wear clothing and PPE provided by their employer. Staff must not wear

clothes or accessories that could start res or produce static electricity or, generally speaking, any item of

clothing that could affect personal safety. When carrying out any operation on the equipment, clothes and instruments must be suitably insulated. Ex: class 0, category RC insulated gloves Maintenance operations must be strictly carried out with the equipment disconnected from the mains, from the PV generator and from the batteries. Staff must NOT access the equipment with bare feet or wet hands. The maintenance engineer must always ensure that nobody else is able to reset or operate the equipment during the maintenance stages and must report any fault or deterioration caused by wear or by ageing, in order to restore the correct safety conditions. The installer or maintenance engineer must always pay attention to the working environment, to ensure it is well lit and has a suitable escape route.

Code 240.010.0001

DLS 300 / 450 / 600

A rst aid kit must be provided.

Do not underestimate burns or wounds.

2.4 Protection from Electric Shock

An electric shock can be fatal.

Avoid touching internal or external normally live parts whilst the system is powered on.

Cables and connections must always be secured, in good conditions, insulated and suitably sized.

The equipment contains capacitors that store static electricity, which could produce dangerous electric

discharges. Make sure that the devices have discharged their energy before carrying out any work on the equipment.

2.5 Electromagnetic Fields and Interferences

Electromagnetic elds may have harmful effects (unknown to date) on the health of people who are sub-

jected to long exposure. Avoid standing for long periods of time at a distance of less than 20cm from the inverter.

The installer must be an expert in the eld and must therefore be responsible for commissioning the system

according to the manufacturer's instructions and local legislation. Should electromagnetic interferences be detected, the installer must solve the problem by contacting the manufacturer's technical support service.

In any case, electromagnetic interferences must be reduced so that they no longer cause disruptions.

Connect to ground the DLS external frame or other conductive parts to ensure best protection to the system and best safe to the operators.

National standards related to grounding must be complied with.

2.6 IP Protection Rating

IP21

• Casing protected from access of solid objects larger than 12.5mm.

• Casing protected from dripping, with a maximum gradient of 15°.

2.7 Signage and Data Decals

The labels afxed to the equipment must NOT be removed, damaged, soiled or hidden.

The labels must always be visible and in good conditions.

The technical specications shown in this manual do not replace those stated on the decals afxed to the

equipment.

DLS 300 / 450 / 600

Code 240.010.0001

2.8 Residual Risks

Despite the cautions and the safety systems, some residual risks will still be present, which cannot be re-

moved. These risks are listed in the following table, alongside a few recommendations to prevent them.

Residual Risks Table

RISK ASSESSMENT RECOMMENDED SOLUTION

Noise pollution caused by installations in unsuitable environments or where staff works on a regular basis.

Reassess the installation environment or site.

Unsuitable ventilation in the location, causing

equipment to overheat but sufcient to prevent

the discomfort of people who are on the site.

Restore adequate ambient conditions and ventilate the site.

Protection from the elements such as water seepage, low temperatures, high humidity, etc..

Keep adequate ambient conditions for the equipment.

Overheating of temperature surfaces (transformers, batteries, coils, etc... ) can cause burns. In addition, pay attention not to obstruct openings or cooling systems on the equipment.

Use suitable PPE or wait for the equipment to cool down before accessing it.

Lack of cleanliness: this affects the cooling system and prevents the safety labels from being read.

Adequately clean the equipment, the labels and the workplace.

Storage of static energy can produce dangerous electrical discharges.

Wait until these devices have discharged their energy before carrying out any work.

Poorly trained staff. Request an additional training course.

During the installation stage, xing the equipment

or its components with provisional means can be hazardous

Take care and prevent access to the installation area.

Accidentally disconnecting the quick connectors whilst the equipment is operational or making incorrect connections can produce electric arcs

Take care and prevent access to the installation area.

Code 240.010.0001

DLS 300 / 450 / 600

3 GENERAL DESCRIPTION

3.1 The DSL System

The DLS (see Figure 00) is a DC - AC solar inverter, designed to be used indoors. The system has been designed to be used in combination with PV panels, to be connected to the national grid, and to a storage battery to ensure optimal self-consumption. In the event of a temporary or permanent power outage, the DLS will automatically enable the off-grid operation and will be able to produce back-up energy to the entire residential system it is connected to. In addition, the DLS system is able to activate an auxiliary or emergency generator to supply further back-up power. For more information, visit our web site www.delios-srl.it

All the adjustments and monitoring operations can be carried out on the LCD display (touch screen) located on the front of the DLS.

3.2 Protective Devices

To ensure maximum performance, DLS systems have been designed without transformer, i.e. without galvanic isolation between the DC input and the AC output. Therefore, in order to ensure a safe operation and

to comply with current standards even without an isolation transformer, the DLS systems have been tted

with all the required safety devices, as described in the following paragraphs.

3.2.1 Anti-islanding

The DLS systems are equipped with an advanced anti-islanding protection system, i.e. with a protective automatic disconnecting system that is enabled in the event of a grid power outage or of voltage and/or frequency faults detected on the grid in order to avoid off-grid operation, which could be dangerous for the members of staff who work on the grid and for the loads connected to it. The safety system is fully compliant with the national relevant standards and legislation.

3.2.2 Earth Leakages of PV Panels

The DLS systems must be used with PV panels isolated by a ground wire (earth), i.e. with the positive and negative terminals without direct connections to ground. To this effect, a built-in protective and monitoring circuit constantly monitors the connection to ground and disables the DLS system when a fault is detected on the system by immediately displaying the associated alarm through the graphic interface. The DLS system can only be used with PV systems compliant with Class A specic requirements, in compliance with standard IEC 61730 requirements.

3.2.3 Converter Earth Leakages

The DLS systems are tted with a residual current monitoring unit (RCMU) in compliance with the require- ments of safety standard IEC/EN 62109-2. The device in question only protects the system from earth leakages occurring upstream of the AC OUT terminals (i.e. towards the DC side of the PV system and therefore towards the PV panels). Leakage currents that could occur in the AC section between the pick up/entering point and the DLS are not detected and require an external protective device.

3.2.4 Automatic Interlock System (IT)

In order to allow the BACKUP operation (off-grid operation) if there is no power from the grid, the DLS systems are tted with a built-in automatic interlock device (dual electrical redundant interlock) compliant

with the requirements of standard CEI 0-21. The system is able to automatically separate the section of the system made up of the DLS and the loads connected to it from the national grid allowing off-grid operation, in compliance with the safety requirements of current standard.

DLS 300 / 450 / 600

Code 240.010.0001

3.2.5 AC BYPASS Switch

In the event of system maintenance and/or faults, the AC BYPASS switch located on the DLS allows the safety system to be switched off and disconnected both from the national grid and the residential system it is connected to. When enabled, the AC BYPASS switch, as well as disconnecting the DLS, reconnects the residential to the national grid, thus ensuring power supply continuity even in the event of a converter failure.

3.2.6 AC GRID and GEN Inputs Magnetic Thermal Circuit Breaker (optional)

The DLS system AC GRID and GEN inputs (optional) are tted with a two-pole 32A 1P+N 4.5kA magnetic

thermal circuit breaker to protect and isolate the AC lines in question.

3.2.7 AC OUT Output Magnetic Thermal Circuit Breaker

The DLS system AC OUT output is tted with a two-pole 32A 1P+N 4.5kA magnetic thermal circuit breaker

to protect and isolate the AC line in question.

3.2.8 DC Inputs String Switch

The DLS system PV1 and PV2 PV eld inputs are tted with a dual two-pole switch to isolate the DC lines

in question.

3.2.9 String Fuses

Should it be necessary, we recommend the installation of eld panels containing string fuses, whose size

must be carefully assessed during the installation stage.

3.2.10 Battery Galvanic Isolation

In order to ensure maximum safety, reliability and high efciency, the DLS system is tted with an innovative DC-DC conversion stage between the battery and the AC output with high frequency galvanic isolation. Thanks to the safety isolation ensured by the conversion stage, the battery negative pole is directly con-

nected to the protective earth conductor and therefore the voltages at the battery terminals can be classied

as SELV (Safety Extra Low Voltage).

3.2.11 Battery Overcurrent Protective and Safety Fuse

The battery input is electronically protected from overcurrents. In the event of an interval failure in the monitoring system, the battery input is protected by a safety fuse (100A 80V)

3.2.12 Battery Temperature Sensor

A battery temperature sensor is installed on the 48V lead-acid batteries. The DLS system uses the sensor signal to optimize the charge of the batteries. Should the batteries overheat, the DLS system will automatically stop their operation. The correct settings can be made through the advanced settings in the control panel.

3.2.13 Automatic Battery Switch

The DLS system is tted with a battery isolating switch which ensures the correct connection/disconnection operations and the battery operation. When the system detects a faulty operation and when the AC BYPASS switch is enabled for maintenance purposes or in the event of a fault, the isolating switch is automatically enabled and the battery is safely disconnected from the system. In these conditions, a battery maintenance operation can be carried out.

3.2.14 Additional Protective Devices

The DLS system is tted with additional protective devices which ensure the safe operation in different

operating conditions:

• Ongoing operating temperature monitoring and automatic power reducer in case of abnormal operating conditions or outside the limits allowed in order to prevent the system from overheating.

• Protective device against PV polarity inversions.

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• Protective device against battery polarity reversals, which stops the system operation until the correct

polarity of the connection is restored.

• Overvoltage protective devices for PV, BATTERY, AC GRID and GEN inputs and AC OUT output.

• AC OUT short-circuit protective device

3.3 Touch-screen Control Panel

The control panel tted to the DLS is a graphic touch screen display. To operate the controls, the operator simply needs to touch the surface of the display with a nger or with suitable objects.

Metal or very sharp materials must not be used.

The display back-lighting is switched off when the display is not used by the user. The LCD display will remain operational even if it appears to be switched off. To reactivate it, touch the surface of the display.

4 INSTALLATION

The installation must be carried out only by experienced staff, authorized by the manufacturer.

During the installation stage, make sure that the inverter is powered off.

4.1 Lifting, Transport and Unloading Instructions

Transport and Handling

Transport of the equipment, specially on the road, must be carried out with means able to protect the system components (specially electronic components) from major impacts, humidity, vibrations, etc. During handling, sudden or fast movements which could create dangerously sway the system must be avoided.

Lifting

DELIOS s.r.l. normally packs and protects each component by using devices able to ease its transport and handling operations but, generally speaking, these operations must be carried out by staff specialised in loading and unloading components. The ropes and vehicles used for lifting must be suitable for withstanding the weight of the equipment. Do not lift multiple units or parts of the equipment at the same time, unless otherwise stated.

The DLS is not tted with specic lifting parts.

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Do not underestimate the weight of the DLS; check its technical features.

Do not move or stop the hanging load above people or things.

Do not let it drop or lay with too much force.

4.2 Unpacking and Checks

Please bear in mind that the packaging (cardboard, cellophane, staples, tape, straps, etc..) can cut and/or injure if not handled with care. It must be removed with special devices and must not be handled by nonresponsible people (such as children). The packaging must be removed and disposed of in compliance with the standards enforced in the country of installation. Check the integrity of the packaging before opening it. Open the packaging and the take out the DLS with due care to prevent damages to its casing or to the internal electronic part. Before starting the commissioning operations, make sure that the DSL casing is in good conditions and does not appear to have been damaged during transport.

4.3 Checking the Box Contents

The DLS box must contain the following parts:

• The DLS.

• Top and bottom bracket for wall mounting.

• Support for wall mounting.

• Operating manual - Operation, installation, maintenance.

• MC4 y connectors and associated contacts for cabling and connecting the PV strings.

4.4 Positioning the DLS

With reference to Figure 01 the DLS installation position must meet the following conditions:

The DLS must be installed indoors in a room with relative humidity ranging from 5% to 95% without

condensation.

• The DLS optimal operation is ensured if the maximum ambient temperature of 40°C is not exceeded.

Should the temperature become too high, the automatic power reducer will trip to prevent the system from overheating.

• Do not install the DLS in a position directly exposed to the sun.

• Install the DLS as close as possible to the meter panel.

• Install the DLS in such a way as to ensure easy access to the controls and to the connections

• Install the DLS in such a way as to have the LCD display at eye height.

• Install the DLS and the power lines in such a way as to prevent access to pets (in particular ro-

dents).

• The DLS, in some specic conditions, can produce a slight buzzing noise during its operation. This

noise is normal and does not affect its performance, but can be annoying if the unit is mounted onto a wall of an inhabited area, onto a wall adjacent to an inhabited area or onto certain type of materials (such as thin wooden panels or metal plates).

• The position must not be accessible to children.

• The wall must be vertical, with a maximum gradient of ± 5°.

• The surface where the DLS will be installed must withstand its weight (30kg).

• The DLS must be installed leaving a 500mm clearance where the bottom of the unit is located to ensure

easy cabling and connection. There are no restrictions for the top of the unit as the ventilation system

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does not require vertical outlets.

• If more multiple DLS systems are installed, a side clearance of 500mm between each system must be

provided.

• The inverter must be used at a maximum altitude above sea level of 3000m. For altitudes higher than 2000m, because of the air being more rareed, specic conditions may arise, which must be taken

into consideration when choosing the site of installation. All installation at altitudes higher than 2000m must be assessed case by case by taking into consideration the following critical issues:

- less efcient cooling

- reduction of air electrical resistance and, when high voltages are present, the creation of electric

arcs

- presence of cosmic radiations, which could affect the correct operation of electronic compo-

nents.

• Do not mount the DLS above or below ammable building materials.

• Do not install the DLS in areas containing highly ammable substances.

• Do not install the DLS in potentially explosive areas.

To prevent the risk of electric shocks or other injuries, make sure that the walls do not have electrical or

water pipes before drilling holes to mount the DLS.

Make sure that there is enough space for the air to ow around the DLS. Local standards could require

larger clearances.

If the DLS is installed inside a cabinet, a piece of furniture or another relatively conned area, enough air

must be able to circulate in order to dissipate the heat produced by the unit.

4.5 Mounting the DLS

The DLS is shipped with a wall mounting bracket which can be used on most types of walls. How to mount the DLS:

1. Fix the wall mounting top and bottom brackets to the DLS body (Follow the instructions shown in Figure 01).

2. Drill the holes required to x the DLS mounting support.

3. Fix the mounting support to the wall

4. Install the DLS.

5. Fix the DLS to the wall by using the bottom bracket xing screws.

4.6 Connection

4.6.1 Cautions

The installation procedure must be carried out only by qualied staff.

Refer to Figures 02, 03 and 04 which show the connection diagrams.

For safety reasons, a load isolator must be provided at the input and the output

of each DLS. The DLS systems feature built-in isolators and do not require any additional external device to be provided. Likewise, a DC isolator for the PV input lines is also built in. In addition, there is also a built-in automatic battery lines isolator. It is normally controlled by the system monitoring unit, but could be manually controlled by operating the AC BYPASS switch in the event of maintenance operations/faults requiring the battery to be disconnected from the system.

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The DLS systems are tted with a residual current monitoring unit compliant with safety standards required

by Standard IEC/EN 62109-2:2011 (please refer to paragraph 4.8.3.5 of the above mentioned Standard).

More specically, they are tted with a redundant device against earth leakage sensitive to all current

components, both direct and alternating. The measurement is simultaneously carried out by two different processes: if only one of the two processes detects a fault, the converter will be disconnected from the grid. If must be noted that the device built into the converter protects the system from faults only occurring upstream of the inverter AC terminals (i.e. from the inverter to the PV modules). Leakage currents that could occur in the AC section between the pick up/entering point and the DLS are not detected. If, in compliance

with local standards or in specic cases, the use of an external circuit breaker is required, we recommend that a type A switch with fault current of at least 100mA is used.

DELIOS s.r.l. declares that the construction of the DLS systems does not produce earth leakage direct currents and therefore, in compliance with article 712.413.1.1.1.2 of section 712 of Standard

CEI 64-8/7, a type B circuit breaker in compliance with standard IEC 60755/A 2 is not required.

Only one DLS system should be connected to each load isolator.

A threaded cap fuse cannot be used as a load isolator.

Do not use measuring devices with maximum input voltage lower than 1000V.

The protective earth conductor must have a cross-section equal to or lower than the cross-section of the

cables connected to the national electricity grid (AC) and, in any case, they must comply with current standards.

4.6.2 Connection to the AC National Electricity Grid

See the connection diagram shown in Figures 05 and 06.

Make sure that local legislations is complied with.

Make sure that the electricity provider connection conditions are complied with.

Connection of multiple inverters to the national electricity grid must comply with the maximum power imbal-

ance prescribed by current legislation.

The resistance of the cable connected to the national electricity grid must be lower than 0.5Ohm.

R < 0.5Ohm

The power dissipated on the line must be lower than 1% of the nominal power.

Conductor cross-section

Line maximum length

DLS 300 DLS 450 DLS 600

2.5 mm

8 m - -

4.0 mm

13 m 12 m 10 m

6.0 mm

23 m 18 m 15 m

Before starting the connection operations, make sure that the AC line external main switch is set to off and

that the AC GRID and AC OUT lines internal circuit breakers are disconnected.

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Before starting the connection operations, make sure that the DC line switch is disconnected.

Before starting the connection operations, make sure that the AC BYPASS line switch is set to on.

WARNING: Before removing the connection compartment cover, make sure that the DC line switch is set

to off.

WARNING: Before removing the connection compartment cover, make sure that the AC GRID, AC OUT

and GEN (optional) lines external circuit breakers are set to off.

Do not carry out other operations on the inverter for at least 10 min. The inverter contains capacitors which

require a minimum time to discharge.

Remove the connection compartment cover panel by removing the screws shown in Fig. 5.

Connect the live (L), neutral (N) and earth (PE) wires of the AC power mains coming into the AC GRID

terminal strip by following the correct colour coding:

• Live (L) → GREY terminal

• Neutral (N) → BLUE terminal

• Earth (PE) → YELLOW/GREEN terminal

Connect the live (L), neutral (N) wires of the residential system to the AC OUT terminal strip by following the

correct colour coding:

• Live (L) → GREY terminal

• Neutral (N) → BLUE terminal

Where required by local standards or if requested by the electricity provider, it may be necessary to connect

the DLS to a meter in order to detect the energy produced by the system. To this effect, connect the Live (L) and Neutral (N) wires to the AC OUT terminal strip energy production meter, following the correct coding:

• Live (L) → GREY terminal

• Neutral (N) → BLUE terminal

Then connect the Live (L) and Neutral (N) wires of the production output meter to the METER terminal strip, following the correct colour coding shown above.

If an energy production meter is not required, directly connect the AC OUT Live (L) and Neutral (N) to

the METER terminal strip Live (L) and Neutral (N) respectively, making sure that the correct colour coding shown above is correctly followed.

The METER input terminal strip is tted with an additional earth contact, which must be connected to the

protective conductor in addition to the earth connection provided by the AC GRID input terminal box.

Make sure not to reverse the live with the neutral. Should this happen, the system could malfunction.

Do not connect multiple AC OUT outputs in parallel.

Do not connect multiple AC OUT outputs in a three-phase conguration.

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4.6.3 Connecting the PV Panels

See the connection diagram shown in Figure 07 .

Before starting the connection operations, make sure that the AC line external main switch is set to off and

that the AC GRID and AC OUT lines internal circuit breakers are disconnected.

Before starting the connection operations, make sure that the DC line switch is disconnected

Before starting the connection operations, make sure that the AC BYPASS line switch is set to on.

The wires coming from the solar panels are always live.

All models of DSL are tted with two input channels (dual maximum power point tracker MPPT). Solar panel

strings of the same type, number, orientation and inclination must be connected to the same channel. The two independent inputs must also be connected in parallel and used as a single input, in compliance with the requirements stated above.

All input parameters that must be complied with to ensure the correct operation of the DLS system are

shown in the "technical data" table.

The DLS input voltage must NEVER exceed 600V.

The DLS input current for each independent input must NEVER exceed:

10 A (DLS 300) Isc = 2x15A 15 A (DLS 450) Isc = 2x20A 20 A (DLS 600) Isc = 2x26A

Voltage and current values higher than the values shown can seriously damage the DLS.

Never disconnect the AC or DC connectors before switching off the (external or internal) circuit breakers. If

the connectors are disconnected during the system operation, large electrical arcs could be produced.

An electric shock can be fatal.

An electric discharge could set re to the inverter. An electric discharge could cause res able to spread to surrounding locations.

WITH A SINGLE PV ARRAY

In some cases, the system may be made up of a single PV array.

See the section “Connecting the PV panels”.

If the current of the PV array is lower than the maximum capacity of one of the DLS input stages, all you

need to do is to connect it to the PV1 input stage. At the same time, in order to avoid incorrect evaluations of the panel electrical isolation parameters, the PV2 stage inputs must be short-circuited by connecting a cable between the connectors + and – of the PV2 input, as shown in Figure 08.

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INPUT CONFIGURATION 1

The unused input should be short-circuited.

See the connection diagram of Figure 08.

If, on the other hand, the PV array current is higher than the maximum capacity of a single stage of the DLS input, it will be necessary to set up the operation with the input stages in parallel by making the connections between connectors -PV1 and -PV2 for the negative pole and +PV1 and +PV2 for the positive pole respectively, as highlighted in Figure 07. The connections must be made by using a cable with a cross-section of no less than 4mm2 (AWG12). In addition, the DLS must be congured in order to be able to operate with

input stages congured this way, therefore the “SETTINGS – SYSTEM” menu must be accessed through the user interface and the MPPT conguration parameter must be set to “PARALLEL”.

4.6.4 Connecting the 48V Lead-acid Battery

See the connection diagram shown in Figure 09 .

The DLS system can handle lead-acid 48V batteries. The batteries produce electricity and may cause elec-

tric shocks or res in the event of a short-circuit or incorrect installation.

The DLS system is tted with a safety fuse against battery short-circuits, with nominal data of 100A 80V DC.

In the event of a replacement, the fuse nominal data must never be exceeded as this could cause electric

shocks or res in the event of a short-circuit.

Before starting the connection operations, make sure that the AC GRID and AC OUT internal circuit break-

ers are set to off (Position “O”).

Before starting the connection operations, make sure that the internal DC line switch is set to off (Position

"O").

Before starting the connection operations, make sure that the AC BYPASS switch is set to on. This allows

the battery automatic switch to be controlled and the line to be isolated (Position “I”).

The terminals and wires required to connect the temperature sensor are at mains potential. Do not discon-

nect and do not touch bare terminals when the equipment is operational.

Use battery cables with a orthogonal cross-section area equal to 16mm2 and with a maximum length of 3m

per cable. Failure to comply with the following instructions could cause the connecting cables to dangerously overheat, as well as the non-compliance with the requirements of current EMC standards.

1. Make sure that the battery cables are disconnected from the battery.

2. Connect the DLS battery cables by following the polarity shown (red for the positive pole, black for the negative pole).

3. Tighten the terminals with a suitable torque (15 Nm - 20 Nm).

4. Clean the surface where the battery temperature sensor will be positioned.

5. Apply the self-adhesive temperature sensor onto the battery, near the positive pole (+).

6. Connect the temperature sensor cables to terminals 1 and 2 of the terminal strip located in the connection compartment.

• Terminal 1 → NTC BATT +

• Terminal 2 → NTC BATT -

7. Connect the battery cables by using a ring terminal on the opposite end of the battery cable.

8. Isolate the battery poles.

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• The batteries must be located in specic areas, in compliance with local legislation. This is required

to prevent the build up of hydrogen gas and battery acid.

• Do not smoke and do not take naked ames near hydrogen gas.

• Isolate the battery poles in order to prevent accidental short-circuits. Short-circuited poles can cause sparks, res or damages to the batteries.

• The incorrect connection of the battery cables (polarity reversal) does not damage the DLS thanks

to the built-in safety device, which prevent the system from operating until the correct polarity of the connection is restored. The incorrect connection message is shown on the LCD display.

4.6.5 Connecting the 48V Lithium Battery

Before connecting the battery to the DLS system, make sure to have read and understood all the instruc-

tions provided in the operating and installation manual supplied by the battery manufacturer. Failure to follow the instructions provided in this manual may jeopardise the correct operation of the system, lead to potentially hazardous situations and relieves DELIOS s.r.l. from any liability and invalidates the warranty conditions.

See the connection diagram and illustration of Figure 09.

Contact DELIOS s.r.l. technical support service or visit our site delios-srl.it to identify the supported batter-

ies.

The DLS system can control 48V Lithium-ion batteries. The batteries produce electricity and may cause

electric shocks or res in the event of a short-circuit or incorrect installation.

The DLS system is tted with a safety fuse against battery short-circuits, with nominal data of 100A 80V DC.

In the event of a replacement, the fuse nominal data must never be exceeded as this could cause electric

shocks or res in the event of a short-circuit.

Before starting to connect the system, make sure that the battery cables are disconnected from the battery

and that the poles are isolated to prevent short-circuit.

Before starting the connection operations, make sure that the AC GRID and AC OUT internal circuit break-

ers are set to off.

Before starting the connection operations, make sure that the DC line internal switch is set to off.

Before starting the connection operations, make sure that the AC BYPASS switch is set to on. This allows

the battery automatic switch to be controlled and the line to be isolated.

Use battery cables with an orthogonal cross-section area of 16mm2 and with a maximum length of 3m per

cable. Failure to comply with the following instructions could cause the connecting cables to dangerously overheat, as well as the non-compliance with the requirements of current EMC standards.

Use a UTP CAT5 cable for the communication connections between the DLS system and the battery, with

a maximum length of 3m. Failure to follow these instructions can lead to hazardous battery faults, as well as to the non-compliance with the requirements of current EMC standards.

1. Make sure that the battery is switched off.

2. Connect the DLS battery cables by following the polarity shown (red for the positive pole, black for the

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negative pole).

3. Tighten the terminals with a suitable torque (15 Nm - 20 Nm).

4. Connect a UTP CAT5 cable between the CAN/RS485 board and the battery communication connector. For the required connections and settings, please refer to the section “ACCESSORIES”, paragraph “CAN/RS485 BOARD” and to the section “PROGRAMMING THE SYSTEM” paragraph “BATTERY”.

5. Where required, connect the battery cables by using a ring terminal on the opposite end of the battery cable.

The batteries must be located in specic areas, in compliance with local legislation.

Isolate the battery poles in order to prevent accidental short-circuits. Short-circuited poles can cause sparks,

res or damages to the batteries.

The incorrect connection of the battery cables (polarity reversal) does not damage the DLS thanks to the

built-in safety device, but prevents the system from operating until the correct polarity of the connection is restored. The incorrect connection message is shown on the LCD display.

4.6.6 Connecting an Auxiliary Power Generator (optional)

See the connection diagram and illustration shown in Figure 10.

The DLS system is able to control power generators with a 230Vac 50/60Hz output and a maximum nomi-

nal power of up to 7kVA. Failure to follow the parameters shown could cause permanent faults and damages to the equipment, as well as to the system it is connected to.

Before starting the connection operations, make sure that the AC GRID, AC OUT and GEN internal circuit

breakers are set to off (Position “O”).

Before starting the connection operations, switch off the auxiliary power generator and disconnect the AC

line external main switch coming from the UPS unit (Position “O”).

Before starting the connection operations, make sure that the internal DC line switch is set to off (Position

"O").

Before starting the connection operations, make sure that the AC BYPASS switch is set to on. This allows

the battery automatic switch to be controlled and the line to be isolated (Position “I”).

Connect the power generator live (L), neutral (N) and earth (PE) wires to the GEN terminal strip by following

the correct colour coding:

• Live (L) → GREY terminal

• Neutral (N) → BLUE terminal

• Earth (PE) → YELLOW/GREEN terminal

Use power generators with a nominal power suitable for the system to be supplied. If the generator nominal

power is too low, permanent faults and damages to the system could occur, as well as to the system it is connected to.

If the power generator being used is tted with an independent switching on device and of a remote start-up

contact, the DLS system can automatically control the switching on operation and the demand, according to the system energy balance. To interface the control, a home automation PCB (optional) must be used. For the required connections and settings, refer to the section “ACCESSORIES” paragraph “HOME AUTOMATION PCB”.

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4.7 Switching on the System

1. Close the connection compartment with its cover and secure it with xing screws.

2. Switch on the AC line external main switch.

3. Switch on the DC isolator (position 1).

4. Wait until the display goes on.

5. Switch on the AC GRID magnetic thermal circuit breaker (position 1).

6. Program the system (please refer to the relevant section)

7. Switch on the AC OUT magnetic thermal circuit breaker (position 1).

8. Switch on the GEN magnetic thermal circuit breaker (optional) (position 1).

9. Switch off the AC BYPASS switch (position 0).

10. Carry out the AUTO-TEST (Italy– CEI 0-21) - The self-test is relevant only in Italy (CEI-021). If the

country is congured for Italy, the self-test is available through the service menu on the display. The

self-test for Italy aims to check the upper and lower limits for the mains voltage and frequency which, if exceeded, will disconnected the DLS from the grid. Should the self-test fail, the DLS will not be connected to the electricity grid.

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5 CONTROL PANEL

5.1 General Information

1 – Power Supply

• Led on: the DLS is powered on and is working normally.

• Flashing led: the DLS is in the start and self-testing stage.

• Led off: the DLS is not powered on.

2 – General alarm

• Led on: the DLS has detected a fault. The LCD display will activate the corresponding alarm icon and will show the information related to the alarm triggered (see the section "Troubleshooting”).

• Led off: the DLS has not detected faults.

3 – Communications

• Led on: communication with external devices is enabled.

• Led off: communication with external devices is disabled.

4 – USB Port

• USB port available for downloading data, updating rmware, connecting the wi dongle

Do not connect to the USB port portable disks, MP3 players, computers and any other device other than a

ash pendrive or a wi dongle. The system is compatible with most of the commercially available ash pendrives and wi dongles. However, the system may not recognise some types of pendrives or wi dongles;

in this case, we recommend retrying the operation by replacing it with another model.

5 – Graphic Touch Screen Display

• Graphic touch screen display which displays the system status and the user/installer settings.

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5.2 “HOME” Screen

3 11

1 2

The “HOME” screen displays and analyses in real time all parts of the DLS system. All the power sources supplied to meet the demands of the domestic needs and their operating parameters are constantly monitored and displayed in real time. Similarly, the central indicator will display in real time the system energy balance.

1. System Status Bar: The system indicator bar shows the DLS operating status, the current date and time. If faults are detected, the alarm codes detected by the system are displayed (see the section "Troubleshooting).

2. Access to the “MENU” Page: This key allows the operator to access the built-in datalogger (graphics,

data and statistical data), system conguration and programming menus.

3. Access to the “LOGIN” Page: This key allows the operator to view the login page to access the different programming level of the system by entering the access password.

4. “ENERGY BALANCE” Icon: This dynamic icon shows the system energy balance in real time: the green colour shows the percentage of energy produced by renewable sources (PV and batteries), the purple colour shows the energy drawn from the grid in order to meet the demands of the residential system connected to the DLS.

5. “SUN” Icon: The “SUN” icon shows if a PV solar system is connected to the system. The ow and direc- tion of energy coming from that source is displayed on the bar located next to the icon. The numbers shown above the bar, which can be scrolled by simply pressing the bar itself, display in real time the voltage, current and power values related to the PV generator.

6. “BATTERY” Icon: The “BATTERY” icon shows if a battery is connected to the system. The icon also

shows the battery charge/discharge status and the percentage of energy available to the system. The ow

and the direction of energy coming from that source is displayed on the bar located next to the icon. The

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numbers shown above the bar, which can be scrolled by simply pressing the bar itself, display in real time the voltage, current and power values related to the battery.

7. “ELECTRICITY GRID” Icon: The “ELECTRICITY GRID” icon shows if energy is being drawn from the

national grid. The ow and the direction of energy coming from that source is displayed on the bar located

next to the icon. The numbers shown above the bar, which can be scrolled by simply pressing the bar itself, display in real time the voltage, current and power parameters of to the national grid.

8. “HOME” icon: The “HOME” icon shows if there are residential loads which draw power from the system.

The ow of energy drawn by the residential system is displayed on the bar located next to the icon. The

number shown above the bar displays in real time the power drawn by the residential system.

9. “GENERAL ALARM” Icon: If the “GENERAL ALARM” icon is on, the system has detected a fault. The

code of the alarm detected by the system is displayed on the system status bar (see the "Troubleshooting"

section). By touching the icon, the list of alarms recorded by the system will be displayed.

10. “MONEYBOX” Icon: When on, the “MONEYBOX” icon shows that the system energy balance is in surplus and that, by meeting the residential load demands, as well as the energy stored in the battery, the DLS is transferring energy to the national grid. The amount of surplus energy produced by the PV generator is transferred to the grid, and will be paid in compliance with the contractual conditions agreed with the electricity provider.

11. “USB” Icon: When the “USB” icon is on, it means that an external USB memory is connected to the port located on the control panel.

The measurements shown on the display are provided for information only and should not be used to work

out the performance or to detect energy production.

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6 PROGRAMMING THE SYSTEM

6.1 “MENU’” Structure and System Navigation

The structure of the menus available from the control panel is shown below:

To access the following menu, the “LOGIN” must be made as INSTALLER by using a password,

which must always be requested to DELIOS srl.

To access some advanced settings contained in the following menu, the “LOGIN” must be made as

INSTALLER with the ID password, which must always be requested to DELIOS srl.

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6.2 “MAIN” Menu

2 3 8 1

1. “HOME” Key - When this key is pressed, the “HOME” screen will be displayed.

2. “BACK” Key - By pressing this key, the previous page is reloaded.

3. “LOGIN/LOGOUT” Key - By pressing this key, the identication page with password can be accessed/

The installer mode can be exited.

4. “CHARTS” Menu - Select the following menu to access the associated section.

5. “INFO” Menu - Select the following menu to access the associated section.

6. “SETTINGS” Menu - Select the following menu to access the associated section.

7. “EXPORT” Menu - Select the following menu to access the associated section.

8. “KEY” Icon - Shows that the INSTALLER mode is active

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6.3 “LOGIN/LOGOUT” Menu

The “LOGIN/LOGOUT” menu allows the operator to access the system programming menu reserved to INSTALLERS.

The installer must enter a PASSWORD, which must be requested to DELIOS srl beforehand.

Parameters at INSTALLER level can only be accessed by qualied staff. Changing the installer level pa-

rameters by unqualied staff could affect the correct operation of the system and relieves the manufacturer

from all liabilities, and invalidates the warranty.

After setting up the parameters in the INSTALLER mode, make sure to have LOGGED OUT from this mode

to prevent unqualied staff from accessing the settings which could affect the system operation.

1. Numeric keypad to enter the ID password.

2. “BACKSPACE” Key – Press this key to delete the last digit entered.

3. “ENTER” Key - Enter/Submit key.

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6.4 “GRAPHICS” Menu

Access to the “GRAPHICS” menu allows the installer to view the following data recorded by the built-in datalogger:

1. Daily time-related data of PV system, battery, grid, residential load powers (Fig. 1).

2. Weekly calculation, with daily partition, of energy produced by the PV generator, power sent to the

grid, power drawn from the grid, residential load.

3. Yearly calculation, with monthly partition, of energy produced by the PV generator, power sent to the grid, power drawn from the grid, residential load (Fig. 2).

Access to the different graphics is made by scrolling down by using the key associated with the selec-

tion of the type of graphics

Fig. 1

1. “GRAPHICS SELECTION” Key - Press this key to select the different displays.

2. “SUN” Key- Press this key to enable/disable the display of the associated value on the graphics area.

3. “ELECTRICITY GRID” Key - Press this key to enable/disable the display of the associated value on the

graphics area.

4. “HOME” Key - Press this key to enable/disable the display of the associated value on the graphics area.

5. “BATTERY” Key - Press this key to enable/disable the display of the associated value on the graphics area.

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Fig. 2

6.5 “INFO” Menu

Access to the “INFO” menu allows the system general information to be viewed:

1. “TOTALIZER” - This page displays the totalizers related to the energy produced by the PV system, the energy used, the energy sent to the grid, the energy drawn from the grid.

2. “SYSTEM PARAMETERS” - This page displays the operating parameters monitored by the system such as: internal and battery operating temperature, isolation resistances to earth of the PV array, leakage currents.

3. “FW VERSIONS” - This page displays the machine rmware versions currently loaded in the system.

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6.6 “SETTINGS” Menu

By accessing the “SETTINGS” menu, the following submenus will appear:

1. “GENERAL” – Through this page, the system settings and functions can be accessed.

2. “PLANT” – Through this page, the system settings can be accessed. Some of the settings can be ac-

cessed only in the INSTALLER mode, which requires a password to be entered (see the section “LOGIN Menu”).

3. “GRID CODE” – Through this page, the settings related to the connection standards enforced in the country where the system is installed will be displayed. These settings can be accessed only in the INSTALLER mode, which requires a password to be entered (see the section “LOGIN Menu”).

4. “BATTERY TYPE” – Through this page, the battery settings can be accessed. Some of the settings can be accessed only in the INSTALLER mode, which requires a password to be entered (see the section “LOGIN Menu”).

5. “HOME AUTOMATION”– Through this page, the settings for the HOME AUTOMATION PCB (optional) can be accessed.

6.6.1 “MAIN” Menu

By accessing the “MAIN” menu, the following submenus will appear:

1. “DATE AND TIME” – This page allows the operator to set current date and time.

2. “AUTO-TEST” – From this page, the self-test can be accessed and its correct execution can be checked.

In addition, a full self-test report can be exported to an external USB memory stick. The self-test procedure is relevant only in Italy (standard CEI 0-21).

3. “TOOLS’” – From this page, the system auxiliaries can be accessed (ventilation test, auxiliary settings, etc).

4. “LANGUAGE” – This page allows the currently displayed language to be selected.

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5. “FIRMWARE UPGRADE” – From this page, the system rmware can be started through a guided pro- cedure.

6. “BACKUP/RESTORE” – From this page, the system data can be BACKED UP on an external USB

memory stick; previously stored data on a USB memory stick can also be RESTORED.

• “DATE AND TIME” Menu

Access the “DATE” and “TIME” menu to set current date and time respectively through the numeric keyboard.

Conrm and save the data entered by pressing the “ENTER” key before leaving the page.

• “AUTO-TEST" Menu

AUTO-TEST

From this page, the self-test can be accessed and its correct execution can be checked.

EXPORT AUTO-TEST RESULTS

If required, a full self-test report can be exported to an external USB memory stick in TXT format.

Make sure to have connected an external USB memory before starting the export procedure.

• “TOOLS’” Menu

FAN TEST

Access the “FAN TEST” menu to test the operation of the ventilation system.

1. “ON” Key – Fan test enabled. The ventilation system is always on

2. “OFF” Key – Fan test disabled. The ventilation system is controlled by the system according to the temperatures detected.

EXTRAS

Access the “EXTRAS” menu to carry out the system settings.

The EXTRAS settings can only be accessed by qualied staff. Changing the settings by unqualied staff

could affect the correct operation of the system and relieves the manufacturer from all liabilities, as well as invalidate the warranty.

• “LANGUAGE” Menu

Access the “LANGUAGE” menu to set up currently displayed language.

• “FIRMWARE UPGRADE” Menu

Before carrying out the update procedure, make sure to have connected an external USB memory stick

where the ".dls" update le has been previously stored. The external USB memory must be large enough

and have at least 128MB of free space.

Before starting the update procedure, make sure to have switched on the BYPASS switch. Carry out the

update procedure by following the instructions displayed on the front panel.

During the DLS update procedure, the safety mode is enabled, which stops all its functions for the entire

duration of the procedure (a few minutes). In order to ensure the ongoing supply to the residential system it is connected to, we recommend that the BYPASS switch is switched on before starting the update procedure.

Do not power off (AC and DC) the system during the update procedure. We recommend that the update

procedure is only carried out when the system is on and there is enough energy produced by the solar PV panels (at least 1kW). A power supply outage during the update procedure could affect the correct operation of the system and relieves the manufacturer from all liabilities, as well as invalidate the warranty.

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We recommend that a full backup of the system settings and data is carried out on an external USB mem-

ory stick before updating the system. See the section “BACKUP/RESTORE”.

The inverter is automatically restarted after completing the update procedure.

• “BACKUP/RESTORE” Menu

BACKUP

Access the “BACKUP” menu to carry out a full backup of the system settings and data.

Make sure to have connected an external USB memory before starting the export procedure. The external

USB memory must be large enough and have at least 128MB of free space.

RESTORE

Access the “RESTORE” menu to fully restore the system settings and data from the previously created le through the “BACKUP” procedure.

Before carrying out the update procedure, make sure to have connected an external USB memory stick

where the backup le has been loaded/created.

6.6.2 “SYSTEM” Menu

Access the “SYSTEM” menu to set up the system MPPT inputs operating mode.

Select the INDEPENDENT or PARALLEL operating mode according to the type of system. By default, the inputs operation has been set to the INDEPENDENT mode.

Some additional settings can be accessed only in the INSTALLER mode, which requires a password to be

entered (see the section “LOGIN Menu”).

Parameters at installer level can only be accessed by qualied staff. Changing the installer level param-

eters by unqualied staff could affect the correct operation of the system and relieves the manufacturer from

all liabilities,and invalidates the warranty.

6.6.3 “GRID CODE” Menu

Access the “GRID CODE” menu for the system advanced settings.

This menu can be accessed only in the INSTALLER mode, which requires a password to be entered (see

the section “LOGIN Menu”).

Parameters at installer level can only be accessed by qualied staff. Changing the installer level param-

eters by unqualied staff could affect the correct operation of the system and relieves the manufacturer from

all liabilities, and invalidates the warranty.

6.6.4 “BATTERY” Menu

Access the “BATTERY” menu to select the type of battery to be used with the system. The default setting is LEAD-ACID battery.

• “LEAD” Menu

By accessing the “LEAD” menu, the following submenus will appear:

1. “BATTERY CAPACITY” – This page allows the user to set up the battery capacity value, specied as

nominal Ah.

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• “LITHIUM ” Menu

By accessing the “LITHIUM” menu, the Lithium battery type, make and model can be selected amongst those supported by the DLS system.

By selecting a Lithium battery, the DLS system can be congured to interact only with the selected battery

type, make and model.

The Lithium battery conguration settings can be used only by qualied staff. Changing the settings by

unqualied staff could affect the correct operation of the system and relieves the manufacturer from all li-

abilities, as well as invalidate the warranty.

Some additional settings can be accessed only in the INSTALLER mode, which requires a password to be

entered (see the section “LOGIN Menu”).

Parameters at installer level can only be accessed by qualied staff. Changing the installer level param-

eters by unqualied staff could affect the correct operation of the system and relieves the manufacturer from

all liabilities, and invalidates the warranty.

6.6.5 “HOME AUTOMATION” Menu

Access the “HOME AUTOMATION” menu to set up the HOME AUTOMATION PCB (optional).

The references related to the independent programmable contacts on the HOME AUTOMATION PCB are:

LD1

→ Enable/disable LD1 relay

LD2 → Enable/disable LD1 relay LD3 → Enable/disable LD1 relay LD4 → Enable/disable LD1 relay GEN → Enable/disable GEN relay AUX → Enable/disable AUX relay

The LD1 ÷ LD4 and therefore the loads applied to the associated contacts are enabled by conguring the

following parameters, specic for each load:

• LD ON/OFF → Select ON to enable the contact control. Select OFF to disable the contact control.

• P START → Select the threshold for the power coming from the PV generator, above which the contact

is enabled. The contact is enabled when the available power from the PV array is higher than the set threshold. The contact is disabled when the available power from the PV array is lower than the set threshold.

• START LD DAY → Select the days of the week when the contact is enabled to operate.

• START LD H → Select the time starting from which the contact is enabled to operate.

• STOP LD H → Select the time starting from which the contact is disabled to operate.

The GEN contact is activated to remotely control the auxiliary power generator and occurs according to the

following modes:

• GEN → The contact is activated when the system detects that at the same time the grid power is unavailable and the battery is at. The contact is disabled when one of the two statuses is restored.

With contact GEN enabled, the energy produced by the PV generator is used by the system to restore the battery charge status.

The AUX contact is dedicated to remotely signal or monitor the external devices when an alarm condition

is detected by the system and is carried as shown below:

• AUX → The contact is enabled when the system detects a general alarm condition. The contact is

disabled when the alarm condition is removed.

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6.7 “EXPORT” Menu

By accessing the “EXPORT” menu, the following submenus are displayed:

1. “DATA” – This page allows the operator to access the system production data download function onto an external USB memory stick.

2. “EVENTS” – This page allows the operator to download the events (alarm queue, parameter change) recorded by the system onto an external USB memory stick.

6.7.1 “DATA” Menu

Access the “DATA” menu to download all the system production data.

Make sure to have connected an external USB memory before starting the export procedure. The external

USB memory must be large enough and have at least 128MB of free space.

6.7.2 “EVENTS” Menu

Access the “EVENTS” menu to download all the events recorded by the system.

Make sure to have connected an external USB memory before starting the export procedure. The external

USB memory must be large enough and have at least 128MB of free space.

7 ACCESSORIES

WARNING: Before removing the connection compartment cover, make sure that the internal DC line circuit

breaker is set to off (Position "O").

WARNING: Before removing the connection compartment cover, make sure that the AC GRID, AC OUT and

GEN (optional) lines circuit breakers are set to off (Position "O").

Before starting the connection operations, make sure that the AC BYPASS switch is set to on. This allows the

battery automatic switch to be controlled and the line to be isolated (Position “I”).

Do not carry out other operations on the inverter for at least 10 min. The inverter contains capacitors which

require a minimum time to discharge.

7.1 EXTERNAL ALARM Signal Connection

See the diagram and illustration shown in Figure 11.

The EXTERNAL ALARM signal provides an isolated logic control suitable for operating external indicators

to return to the remote area the alarm conditions detected by the DLS monitoring device and indicated by the LCD display.

The EXTERNAL ALARM is available at the ends of the following terminals:

• Terminal 3 → GND (COMMON)

• Terminal 4 → AL_EXT (EXTERNAL ALARM)

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The EXTERNAL ALARM signal is enabled with the following logic:

• Signal AL_EXT = 0V → Alarm condition

• Signal AL_EXT = +15V → Normal operation

The external indicator monitoring port must have an input impedance of Ri ≥ 100kΩ.

After completing the operations, close the connection compartment with its cover and secure it with xing

screws.

7.2 Connection between the REMOTE TRIPPING and the EXTERNAL SIGNAL (Italy - CEI 0-21)

See the diagram and illustration shown in Figure 11.

The REMOTE TRIPPING and EXTERNAL SIGNAL are relevant only in ITALY (Standard CEI-021).

The REMOTE TRIPPING and EXTERNAL SIGNAL are available at the ends of the following terminals:

• Terminal 3 → GND (COMMON)

• Terminal 5 → T_D (REMOTE TRIPPING)

• Terminal 6 → S_E (EXTERNAL SIGNAL)

The REMOTE TRIPPING and EXTERNAL SIGNAL are enabled at low logic level (GND).

After completing the operations, close the connection compartment with its cover and secure it with xing

screws.

7.3 Home Automation PCB (optional)

The home automation PCB (optional) provides 6 isolated independent or normally open contacts (4A 250Vac max) which allow to enable secondary storage system, residential loads and/or emergency supply systems (auxiliary power generator) according to the system status and energy balance.

7.3.1 Installation and Connections

See the connection diagram and illustration shown in Figure 12.

Fix the home automation PCB support onto the DIN rail located in the connection compartment and connect

the monitoring cabling connectors, available in the connection compartment, as shown in the illustrations.

Connect the single contacts according to the control requirements of the controlled devices, as shown in

the illustrations.

Do not connect to the contacts devices with a current input higher than 4A and operating voltages higher

than 250Vac

After completing the operations, close the connection compartment with its cover and secure it with xing

screws.

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7.3.2 Programming the Contact Controls

Contacts are independently controlled (switching or closing), according to the user's settings, which can

be set from the control panel (see the section SYSTEM PROGRAMMING - SETTINGS - HOME AUTOMATION).

7.4 CAN/RS485 board (optional)

The CAN/RS485 communication board (optional) provides the terminal strips to make the connection with the CAN or RS485 communication buses of external devices interfaced with the DLS system (such as Lithium batteries).

7.4.1 Installation and Connections

See the connection diagram and illustration of Figure 09.

Fix the home CAN/RS485 board support onto the DIN rail located in the connection compartment and con-

nect the monitoring cabling connectors, available in the connection compartment, as shown in the illustrations.

Connect the single contacts according to the specications of the controlled devices, as shown in the illus-

trations.

WARNING: Incorrectly connecting the communication signals could affect the correct operation of the sys-

tem and relieves the manufacturer from all liabilities, as well as invalidates the warranty.

After completing the operations, close the connection compartment with its cover and secure it with xing

screws.

8 MAINTENANCE

8.1 General Information

Any repair work or replacement of parts of the system must be carried out only by qualied technical staff.

Repair work or replacement of parts of the system carried out by unauthorised staff will immediately invalidate the product warranty. Only genuine spare parts must be used. Using non genuine spare parts will immediately invalidate the product warranty. Immediately replace the components that do not appear in perfect conditions.

Before starting any maintenance operations, make sure that the system has been switched off, and that the

AC line external main switch has been set to off.

If an auxiliary power generator is available, before starting any maintenance operations, make sure that the

UPS has been switched off and that the AC line external switch coming from the UPS has also been set to off.

The equipment contains capacitors that store static electricity, which could produce dangerous electric

discharges. Make sure that the devices have discharged their energy before carrying out any work on the equipment.

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Never disconnect the AC or DC connectors connected to the DLS system before switching off the (external

or internal) circuit breakers. If the connectors are disconnected during the system operation, large electrical arcs could be produced.

An electric shock can be fatal.

An electric discharge could set re to the DLS. An electric discharge could cause res able to spread to surrounding locations.

Opening the DLS system, with the exceptions listed in this manual, is strictly prohibited.

The DLS system cannot be modied in any way.

Should the operator not comply with the instructions given above, the manufacturer will not accept any responsibilities.

8.2 Switching off the System

Before starting the maintenance operations, make sure to have switched off the system by following, in

sequential order, the steps described below:

1. Switch on the AC BYPASS switch (position 1).

2. Switch off the DC isolator (position 0).

3. Switch off the AC GRID thermal magnetic circuit breaker (position 0).

4. Switch off the AC OUT thermal magnetic circuit breaker (position 0).

5. Switch off the GEN thermal magnetic circuit breaker (position 0).

6. Switch off the AC line external main switch.

7. If present, switch off any auxiliary power generator and disconnect the AC line external main switch coming from the UPS.

The equipment contains capacitors that store static electricity, which could produce dangerous electric dis-

charges. Wait until these devices have discharged their energy before carrying out any work on the equipment.

8.3 Replacing the Battery Fuse

Before starting the maintenance operations, make sure to have switched off the system.

During the replacement operations, take great care not to cause short-circuits between the positive and

negative poles of the battery cables as this could case electric shocks or res, as well as damage the battery.

The DLS system is tted with a safety fuse against battery short-circuits, with nominal data of 100A 80V

DC type. In the event of a replacement, the fuse nominal data must never be exceeded as this could cause

electric shocks or res in the event of a short-circuit.

1. Loosen the fuse xing bolts.

2. Replace the fuse with one with equivalent nominal values (100A 80VDC).

3. Take care not to press the fuse terminals between the xing washers to prevent them from warping whilst tightening the bolts.

4. Tighten the bolts with a suitable torque (15 Nm - 20 Nm).

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8.4 Disinstallation

Before starting any maintenance operations, make sure that the system has been switched off, and that the

AC line external main switch has been set to off.

If an auxiliary power generator is available, before starting any maintenance operations, make sure that

the UPS has been switched off and that the AC line external switch coming from the UPS has also been switched off.

Wait at least 10 min. before removing the DLS from the wall.

The DLS external casing could overheat and cause burns if touched.

Do not carry out other operations on the DLS system for at least 10 min. The DLS system contains capaci-

tors which require a minimum time to discharge.

The batteries produce electricity and may cause electric shocks or res in the event of a short-circuit or

incorrect installation.

The wires coming from the solar panels are always live. The voltage from a string of solar panels could

reach 600 V!!

Before starting to uninstall the system, make sure that the battery cables are disconnected from the battery

and that the poles are isolated to prevent short-circuit.

1. Disconnect the battery cables from the battery and isolate the poles in order to prevent short-circuits.

2. Open the connection compartment by removing the xing screws.

3. Disconnect any optional connectors.

4. Disconnect the DC connectors of PV panels strings.

5. Disconnect the AC GRID wires.

6. Disconnect the AC OUT wires.

7. Disconnect the GEN wires (optional).

8. Disconnect the battery cables from the DLS.

9. Disconnect the battery temperature sensor wires

10. Disconnect any external signal and control wires, if present

11. The DLS can now be removed to be disposed of or repaired

8.5 Disposal

When the DLS reaches the end of its useful life or is found to have irreparable faults:

• Dispose of the DLS in compliance with local legislation.

• Take the DLS to a recycling centre for electrical and electronic waste.

The DLS must be disposed of in compliance with local legislation.

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9 TROBLESHOOTING

ALARM TYPE SOLUTION

E001 Converter monitoring sys-

tem fault.

• Switch off and restart the system.

• Refer to the sections “Switching off the system” and “Switching on

the system”

• Should the problem persist, contact our technical support service.

E002 Converter monitoring sys-

tem fault.

• Switch off and restart the system.

• Refer to the sections “Switching off the system” and “Switching on

the system”

• Should the problem persist, contact our technical support service.

E003 Incorrectly congured sys-

tem.

• Contact our technical support service.

E004 AC overcurrent.

• Check the sizes and the system output connections.

• Refer to the section “Connection”.

• Should the problem persist, contact our technical support service.

E005 Faulty interface device

built in the system.

• Switch off and restart the system.

• Refer to the sections “Switching off the system” and “Switching on

the system”

• Should the problem persist, contact our technical support service.

E006 Faulty interlock device

built in the system.

• Switch off and restart the system.

• Refer to the sections “Switching off the system” and “Switching on

the system”

• Should the problem persist, contact our technical support service.

E007 Temperature inside the

system too high

• Check the correct position of the inverter and that the installation

complies with the instructions provided in the sections "Positioning" and "Mounting" of this manual.

• Check that the ambient temperature is within the accepted range.

• Check the correct operation of the cooling fans.

• Check that there is no build up of dust near the air intakes.

• Should the problem persist, contact our technical support service.

E008 Internal current leakage

• Switch off and restart the system.

• Refer to the sections “Switching off the system” and “Switching on

the system”

• Should the problem persist, contact our technical support service.

E009 NEUTRAL line incorrectly

connected

• Check that the input and output AC lines have the correct polarity.

• Should the problem persist, contact our technical support service.

E010 Self-test failed (only rel-

evant in Italy CEI 0-21)

• Make sure that the electrical connections are in good conditions.

• Make sure that the mains voltage and frequency are within the range

required by standard CEI 0-21.

• Should the problem persist, contact our technical support service.

E011 Mains voltage too high

• Make sure that the mains voltage is within the range required by local legislation.

• Check the mains impedance.

• If the voltage is outside the allowed range because of the conditions of the local grid, contact the electricity provider to nd out whether

the voltages at the connection point can be adjusted or ask for their approval to change the operating limits.

• If the voltage is within the allowed range, but the alarm persists, contact our technical support service.

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ALARM TYPE SOLUTION

E012 Mains voltage too high

• Make sure that the mains voltage is within the range required by local legislation.

• Check the mains impedance.

• If the voltage is outside the allowed range because of the conditions of the local grid, contact the electricity provider to nd out whether

the voltages at the connection point can be adjusted or ask for their approval to change the operating limits.

• If the voltage is within the allowed range, but the alarm persists, contact our technical support service.

E013 Mains voltage too low

• Make sure that the mains voltage is within the range allowed by local legislation.

• Check the mains impedance.

• If the voltage is outside the allowed range because of the conditions of the local grid, contact the electricity provider to nd out whether

the voltages at the connection point can be adjusted or ask for their approval to change the operating limits.

• If the voltage is within the allowed range, but the alarm persists, contact our technical support service.

E014 Mains voltage too low

• Make sure that the mains voltage is within the range allowed by local legislation.

• Check the mains impedance.

• If the voltage is outside the allowed range because of the conditions of the local grid, contact the electricity provider to nd out whether

the voltages at the connection point can be adjusted or ask for their approval to change the operating limits.

• If the voltage is within the allowed range, but the alarm persists, contact our technical support service.

E015 Mains frequency too high

• Make sure that the mains frequency is within the range allowed by local legislation.

• If the mains frequency is outside the allowed range because of the conditions of the local grid, contact the electricity provider to ask for their approval to change the operating limits.

• If the mains frequency is within the allowed range, but the alarm persists, contact our technical support service.

E016 Mains frequency too low

• Make sure that the mains frequency is within the range allowed by local legislation.

• If the mains frequency is outside the allowed range because of the conditions of the local grid, contact the electricity provider to ask for their approval to change the operating limits.

• If the mains frequency is within the allowed range, but the alarm persists, contact our technical support service.

E017 Mains frequency too high

• Make sure that the mains frequency is within the range allowed by local legislation.

• If the mains frequency is outside the allowed range because of the conditions of the local grid, contact the electricity provider to ask for their approval to change the operating limits.

• If the mains frequency is within the allowed range, but the alarm persists, contact our technical support service.

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ALARM TYPE SOLUTION

E018 Mains frequency too low

• Make sure that the mains frequency is within the range allowed by local legislation.

• If the mains frequency is outside the allowed range because of the conditions of the local grid, contact the electricity provider to ask for their approval to change the operating limits.

• If the mains frequency is within the allowed range, but the alarm persists, contact our technical support service.

E019 Disconnection from the

grid controlled by the electricity provider.

• Interface intervention required by the electricity provider .

E020 The direct current going

into the grid has a value higher than the allowed threshold.

• Make sure that there is direct current going into the grid.

• If the direct current going into the grid is outside the allowed range

because of the conditions of the local grid, contact the electricity provider to ask for their approval to change the operating limits.

• If the direct current going into the grid is within the allowed range, but the alarm persists, contact our technical support service.

E021 The direct current going

into the grid has a value higher than the maximum instantaneous threshold allowed.

• Make sure that there is direct current going into the grid.

• If the direct current going into the grid is outside the allowed range

because of the conditions of the local grid, contact the electricity provider to ask for their approval to change the operating limits.

• If the direct current going into the grid is within the allowed range, but the alarm persists, contact our technical support service.

E022 Converter monitoring sys-

tem fault.

• Switch off and restart the system.

• Refer to the sections “Switching off the system” and “Switching on

the system”

• Should the problem persist, contact our technical support service.

E023 DC overcurrent.

• Check the sizes and the connection at the system DC inputs.

• Refer to the section “Connection”.

• Should the problem persist, contact our technical support service.

E024 DC overcurrent.

• Check the sizes and the connection at the system DC inputs.

• Refer to the section “Connection”.

• Should the problem persist, contact our technical support service.

E025 Loss of isolation of the PV

generator.

• Check the DC lines leakage to ground

E026 DC voltage out of range

• Immediately disconnect the PV generator as it could get damaged.

• Check the sizes of the system.

• Check the PV generator no-load voltage.

E027 BATTERY overcurrent.

• Check the sizes and the connections at the system BATTERY inputs.

• Refer to the section “Connection”.

• Should the problem persist, contact our technical support service.

E028 Unidentied battery.

• Check the connections and the polarity at the system BATTERY

inputs.

• Check the battery voltage and make sure that it is within the allowed operating limits.

• Refer to the section “Connection”.

• Should the problem persist, contact our technical support service.

Code 240.010.0001

DLS 300 / 450 / 600

ALARM TYPE SOLUTION

E029 Thermal circuit breaker

tripped.

• Check the correct position of the inverter and that the installation

complies with the instructions provided in the sections "Positioning" and "Mounting" of this manual.

• Check that the ambient temperature is within the accepted range.

• Check the correct operation of the cooling fans.

• Check that there is no build up of dust near the air intakes.

• Should the problem persist, contact our technical support service.

E001LI ÷

E0031LI

Lithium battery alarms.

• Check the connections and the polarity at the system BATTERY inputs.

• Check the battery voltage and make sure that it is within the allowed operating limits.

• Refer to the section “Connection”.

• Should the problem persist, contact our technical support service.

W001LI ÷

W0031LI

Lithium battery messaging.

• Check the connections and the polarity at the system BATTERY inputs.

• Check the battery voltage and make sure that it is within the allowed operating limits.

• Refer to the section “Connection”.

• Should the problem persist, contact our technical support service.

EV001LI ÷

EV0031LI

Lithium battery messaging.

• Check the connections and the polarity at the system BATTERY inputs.

• Check the battery voltage and make sure that it is within the allowed operating limits.

• Refer to the section “Connection”.

• Should the problem persist, contact our technical support service.

10 TECHNICAL DATA

10.1 Nameplate

For instructions on where to position the data decals on board of the equipment, refer to Figure 13.

The technical specications shown in this manual do not replace those appearing on the information decals

afxed to the equipment.

The decals afxed to the equipment must NEVER be removed, damaged, soiled or hidden for any reason

whatsoever.

The information contained in the certication decal are:

1. Manufacturer

2. Model

3. Information on data decal

4. Certication marks

5. Usage notices and instructions.

The decals must NEVER be hidden with foreign objects (rags, boxes, tools etc...); these must be periodi-

cally cleaned and always be clearly visible.

DLS 300 / 450 / 600

Code 240.010.0001

10.2 Technical Features

PV System with battery storage DLS-300 (300 L) DLS-450 DLS-600

DC Inputs

Maximum input power 3.1kW 4.7kW 6.3kW

Maximum input voltage 600V 600V 600V

Minimum input voltage 115V 115V 115V

Nominal input voltage 400V 400V 400V

FV MPPT voltage range 100V - 550V 100V - 550V 100V - 550V

DC voltage range - independent MPPTs 100V - 550V @ 2kW 100V - 550V @ 3kW 100V - 550V @ 4kW

DC voltage range - MPPT connected in parallel 100V - 550V @ 3.1kW 100V - 550V @ 4.7kW 100V - 550V @ 6.3kW

Maximum power x MPPT 2kW 3kW 4kWk

Maximum MPPT power - Maximum imbalance

2kW @ MPPT1 +

1.1kW @ MPPT2

3kW @ MPPT1 +

1.7kW @ MPPT2

4kW @ MPPT1 +

2.3kW @ MPPT2

Maximum input current x MPPT 10A 15A 20A

Short-circuit current x MPPT 15A 20A 26A

Number of MPPTs 2 2 2

Maximum number of strings x MPPT 1+1 2+2 2+2

Battery charge

Battery type Lead-acid / Lithium Lead-acid Lead-acid

Battery voltage range 40V - 60V 40V - 60V 40V - 60V

Battery current range 5A - 66A, programmable 5A - 66A, programmable 5A - 100A, programmable

Maximum battery current 66A (33A) 66A 100A

Maximum charging/discharging power 3.2kW (1.8kW) 3.2kW 4.8kW

Discharge strategy

3 stage, adaptive with

maintenance

3 stage, adaptive with

maintenance

3 stage, adaptive with

maintenance

Temperature compensation As standard As standard As standard

AC inputs

Mains connection Single-phase Single-phase Single-phase

AC voltage range 230Vac ± 15% 230Vac ± 15% 230Vac ± 15%

Mains frequency 50Hz 50Hz 50Hz

AC output

Mains connection Single-phase Single-phase Single-phase

Sn nominal power 3kVA 4.5kVA 6kVA

P maximum active power 3kW 4.5kW 6kW

Q maximum reactive power 3kVA 4.5kVA 6kVA

AC voltage range 230Vac ± 15% 230Vac ± 15% 230Vac ± 15%

Output nominal current 13A 19.6A 26.1A

Contribution to the short-circuit current 32A 32A

32A

Mains nominal frequency 50Hz 50Hz 50Hz

Frequency range 47Hz - 53Hz (*) 47Hz - 53Hz (*) 47Hz - 53Hz (*)

Cos φ 1 (adj ± 0.80) 1 (adj ± 0.80) 1 (adj ± 0.80)

THD < 3% < 3% < 3%

Code 240.010.0001

DLS 300 / 450 / 600

PV System with battery storage DLS-300 (300 L) DLS-450 DLS-600

Operating Performance

Maximum Efciency 97% 97% 97%

Weighted efciency (Euro) 96% 96% 96%

Battery typical efciency 94% 94% 94%

Protective Devices

DC polarity reversal As standard As standard As standard

BATTERY polarity reversal As standard As standard As standard

BATTERY overload protection As standard As standard As standard

Safety interlock Built-in Built-in Built-in

AC short-circuit protection As standard As standard As standard

Isolation monitoring unit As standard As standard As standard

Interface protection and anti-islanding

In compliance with local

legislation

In compliance with local

legislation

In compliance with local

legislation

RCMU (Residual Current Monitoring Unit) As standard As standard As standard

BATTERY galvanic isolation As standard As standard As standard

DC Overvoltage protective device (MOV + SURGE PROTECTOR)

As standard As standard As standard

AC Overvoltage protective device (MOV + SURGE PROTECTOR)

As standard As standard As standard

BATTERY Overvoltage protection (MOV) As standard As standard As standard

Accessories Supplied

DC connector Quick coupling Quick coupling Quick coupling

AC connectors

Screw terminal strip, M25

cable gland

Screw terminal strip, M25

cable gland

Screw terminal strip, M25

cable gland

BATT connection

Screw terminal strip, M25

cable gland

Screw terminal strip, M25

cable gland

Screw terminal strip, M25

cable gland

DC isolator As standard As standard As standard

BATTERY automatic isolator Built-in As standard As standard

AC inputs magnetic thermal circuit breaker As standard As standard As standard

AC output magnetic thermal circuit breaker As standard As standard As standard

AC BY-PASS switch As standard As standard As standard

Display

Graphic Touch Screen 4.3’’

colour LCD

Graphic Touch Screen 4.3’’

colour LCD

Graphic Touch Screen 4.3’’

colour LCD

Interface

USB

CAN Bus (optional)

Ethernet (optional)

RS 485 (optional)

WiFi (optional)

USB

CAN Bus (optional)

Ethernet (optional)

RS 485 (optional)

WiFi (optional)

USB

CAN Bus (optional)

Ethernet (optional)

RS 485 (optional)

WiFi (optional)

Battery temperature sensor As standard As standard As standard

External alarm signal As standard As standard As standard

Data logger Built-in Built-in Built-in

Warranties

5 years (as standard)

10 years (optional)

5 years (as standard)

10 years (optional)

5 years (as standard)

10 years (optional)

DLS 300 / 450 / 600

Code 240.010.0001

PV System with battery storage DLS-300 (300 L) DLS-450 DLS-600

Ambient Conditions

Ambient temperature -20°C…+60°C -20°C…+60°C -20°C…+60°C

Power derating temperature range 40°C…+60°C 40°C…+60°C 40°C…+60°C

Storage temperature -30°C…+70°C -30°C…+70°C -30°C…+70°C

Relative humidity

5%...95% without conden-

sation

5%...95% without conden-

sation

5%...95% without conden-

sation

Noise levels < 50 dB(A) @ 1m < 50 dB(A) @ 1m < 50 dB(A) @ 1m

Maximum operating altitude without derating 2000m 2000m 2000m

Pollution degree classication PD 3 PD 3 PD 3

Installation environmental category

Indoors without air condi-

tioning

Indoors without air condi-

tioning

Indoors without air condi-

tioning

Physical

Protection rating IP 21 IP 21 IP 21

Overvoltage category (IEC 62109-1)

II (DC, BATTERY, GEN-

ERATOR inputs)

III (AC inputs and outputs)

II (DC, BATTERY, GEN-

ERATOR inputs)

III (AC inputs and outputs)

II (DC, BATTERY, GEN-

ERATOR inputs)

III (AC inputs and outputs)

Ventilation I-cool I-cool I-cool

Dimensions (W x H x D) in mm 710 x 650 x 150 710 x 650 x 150 710 x 650 x 150

Weight < 30 Kg < 30 kg < 30 kg

Fitting system Wall bracket Wall bracket Wall bracket

Safety

Protection class I I I

DC to AC isolation level Without transformer Without transformer Without transformer

BATTERY to AC and DC isolation level With safety transformer With safety transformer With safety transformer

Certications CE CE CE

EMC and Safety standards

EN62109-1; EN62109-2;

EN61000-6-2; EN61000-

6-3; EN61000-3-2;

EN61000-3-3; EN61000-3-

11; EN61000-3-12

EN62109-1; EN62109-2;

EN61000-6-2; EN61000-

6-3; EN61000-3-2;

EN61000-3-3; EN61000-3-

11; EN61000-3-12

EN62109-1; EN62109-2;

EN61000-6-2; EN61000-

6-3; EN61000-3-2;

EN61000-3-3; EN61000-3-

11; EN61000-3-12

Mains connection standards CEI 0-21 CEI 0-21 CEI 0-21

Other Features

BACKUP/OFF-GRID mode operation Yes, with built-in interlock Yes, with built-in interlock Yes, with built-in interlock

ON-GRID/BACKUP/OFF-GRID selection mode Yes, automatic Yes, automatic Yes, automatic

Grid support (grid services)

Yes, if required by the

standard

Yes, if required by the

standard

Yes, if required by the

standard

Input for auxiliary power generator Optional Optional Optional

Residential loads management

Yes, with home automation

PCB (optional)

Yes, with home automation

PCB (optional)

Yes, with home automation

PCB (optional)

Auxiliary power generator remote control

Yes, with home automation

PCB (optional)

Yes, with home automation

PCB (optional)

Yes, with home automation

PCB (optional)

(*) The specied range may vary according to the mains connection standard enforced in the country of installation

Code 240.010.0001

DLS 300 / 450 / 600

Power Derating

In order to ensure thermal and electrical safety during the operation of the DLS system, the power drawn from the grid by the system is automatically reduced. The power derating can occur for adverse ambient conditions or inadequate input voltage values. Although the power derating conditions may be caused both by adverse ambient conditions and inadequate input voltage, the power derating will always be related to the lower value detected.

Power Derating Caused by Ambient Conditions

The power derating and the DLS system temperature detected when it occurs depend on the ambient temperature and on many operating parameters. Example: input voltage, mains voltage and power available from the PV array. Therefore the DLS system can reduce its power during certain times of the day according to the value of these parameters. However, the DLS ensures the maximum output power even with high temperatures; see technical features.

Power Derating Caused by Input Voltage

The DLS system reduces its output power if the input voltage from the PV array is too low and exceeds the maximum input current for each input.

DLS 300 / 450 / 600

Code 240.010.0001

DELIOSs.r.l.-Corso Noblesville, 10 - 35013 Cittadella (Padova) - ITALY

Tel. +39 049 9403206 - Email: info@delios-srl.it - www.delios-srl.it

Delios DLS 300, DLS 600, DLS 450 Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual