Autarco XLX-MII Series User manual

Installation and Operation Manual
Solar Inverters XLX-MII series
© Autarco Group B.V. IM-S2-XLX-MII-EN-V2.3

Contact Information
Autarco Group B.V.
Schansoord 60
5469 DT Erp
The Netherlands
www.autarco.com
[email protected]
Other Information
This manual is an integral part of the unit. Please read the manual carefully before installation,
operation or maintenance. Keep this manual for future reference.
Product information is subject to change without notice. All trademarks are recognized as the
property of their respective owners.
© Autarco Group B.V.
All rights reserved.
XLX-MII series Inverters
2

installation and operation manual
Table of Contents
1 Introduction 5
1.1 Read this first 5
1.2 Target Audience 5
1.3 Product versions covered by this document 6
2 Preparation 7
2.1 Safety instructions 7
2.2 Package contents 8
2.3 Internal DC switch 8
2.4 Explanations of symbols on inverter 8
3 Product information 10
3.1 Summary 10
3.2 Product identification 10
3.3 Product overview 11
4 Handling and Storage 12
4.1 Product handling 12
4.2 Product Storage 12
5 Installation 14
5.1 Safety 14
5.2 Mounting instructions 14
5.3 Safety clearance 15
5.4 Mounting procedure 16
6 Electrical installation 18
6.1 AC connection 18
6.2 RS485 Connection 20
6.3 Circuit breaker rating 21
6.4 DC connections 22
6.5 Commissioning and decommissioning sequence 23
7 Operation 24
7.1 LED indicator lights 24
7.2 Inverter display 24
7.3 Information 25
7.4 Settings 26
7.5 Advanced info 27
7.6 Advanced Settings 27
7.6.1 Important Settings and Operation 30
7.6.1.1 AFCI, I/V-Curve, External EPM Set 30
IM-S2-XLX-MII-EN-V2.4
3

8 Monitoring setup and system registration 31
9 Maintenance 31
10 Recycling and Disposal 31
11 Troubleshooting 32
11.1 General 32
11.2 Internal component fault 32
11.3 Grid errors 33
11.4 System and design fault 34
12 Product specifications 35
XLX-MII series Inverters
4

installation and operation manual
1 Introduction
1.1 Read this first
This manual contains important information for use during installation and maintenance of the
XLX-MII series Autarco inverter.
To reduce the risk of electrical shock, and to ensure the safe installation and operation of the
XLX-MII series Autarco inverters, the following safety symbols appear throughout this document to
indicate dangerous conditions and important safety instructions.
WARNING! Indicates safety instruction, which if not correctly followed, can result in
injury or property damages.
RISK OF ELECTRIC SHOCK! Indicates safety instructions, which if not correctly
followed, could result in electric shock.
HOT SURFACE! Indicates safety instructions, which if not correctly followed, could
result in burns.
1.2 Target Audience
This manual is intended for anyone who uses Autarco XLX-MII series inverter. Before any further
action, the operators must first read all safety regulations and be aware of the potential danger to
operate high-voltage devices. Operators must also have a complete understanding of this device’s
features and functions.
ATTENTION! Qualified personnel means a person with valid license from the local
authority in:
●Installing electrical equipment and PV power systems (up to 1000 V).
●Applying all applicable installation codes and using Personal Protective
Equipment.
●Analyzing and reducing the hazards involved in performing electrical work.
WARNING! Do not use this product unless it has been successfully installed by qualified
personnel in accordance with the instructions in chapter 5 “Installation”.
IM-S2-XLX-MII-EN-V2.4
5

1.3 Product versions covered by this document
The main purpose of this user manual is to provide instructions and detailed procedures for
installing, operating, maintaining, and troubleshooting the XLX-MII series of Autarco inverters
which includes the following models:
For 380/400V AC grid connection:
●S2.XLX25000S-MII
●S2.XLX30000S-MII
●S2.XLX33000S-MII
●S2.XLX36000S-MII
●S2.XLX40000S-MII
The “S2.” in the product code means the product is a grid-tied inverter. If the product has an “S” at
the end it comes with integrated DC switches. The -MII stands for the Mark II series.
The item code or SKU will include an additional number at the end. The final number references
the default grid standard and colour of inverter. For example, S2.XLX25000S-MII.1 is the 20kW
model with Dutch grid standard as default, integrated DC switch and Autarco blue cover.
Please keep this user manual available at all times in case of emergency.
XLX-MII series Inverters
6

installation and operation manual
2 Preparation
2.1 Safety instructions
DANGER! Do not touch any internal components whilst the inverter is in operation.
DANGER! Do not stand close to the inverter during severe weather conditions such
as lighting, etc.
Make sure you completely cover the surface of all PV arrays with opaque (dark)
material before wiring them or make sure the DC circuit breaker or equivalent DC
isolator is disconnected.
This is because photovoltaic (PV) arrays create electrical energy when exposed to
light, and could cause a hazardous condition.
The XLX-MII series inverter must only be operated with PV arrays of protection class
II, in accordance with IEC 61730, class A.
WARNING! The PV inverter will become hot during operation; please don’t touch the heat
sink or peripheral surface during or shortly after operation.
NOTICE! Do not directly connect AC output of the inverter to any private AC equipment.
The PV inverter is designed to feed AC power directly into the public utility power grid.
WARNING! The installation, service, recycling and disposal of the inverters must be
performed by qualified personnel in compliance with national and local standards and
regulations.
Please contact your dealer to get the information of authorized repair facility for any
maintenance or repairmen.
Any unauthorized actions including modification of product functionality of any form will affect the
validation of warranty service; Autarco may deny the obligation of warranty service accordingly.
IM-S2-XLX-MII-EN-V2.4
7

2.2 Package contents
Autarco XLX-MII series
inverter
Mounting bracket
Incl. screws
MC4 connector pairs
S4.MC4F/MC4M
RJ45 connector
AC terminal cover
Instruction manual
2.3 Internal DC switch
Please verify whether your Autarco XLX-MII series inverter is equipped with an internal DC switch.
If there is an internal DC switch the product code will end in an “S”. The switch can be found on the
bottom of the inverter (see Error! Reference source not found.). If there isn’t an internal DC
switch it is important to apply an external DC disconnector in order to completely disconnect the
solar PV module strings from the inverter.
2.4 Explanations of symbols on inverter
10 min.
DANGER - HIGH ELECTRIC VOLTAGE
This device is directly connected to the public grid. All work to the
inverter shall be carried out by qualified personnel only. There might be
residual currents in the inverter for up to 10 minutes because of large
capacitors.
ATTENTION
This device is directly connected to electricity DC generators and the
public AC grid.
XLX-MII series Inverters
8

installation and operation manual
DANGER – HOT SURFACES
The components inside the inverter will get hot during operation, DO
NOT touch aluminum housing during operating.
ATTENTION
In case of any work to the inverter, always refer to this manual for
detailed product information.
ATTENTION
This device SHALL NOT be disposed of in residential waste. Please go to
Chapter 10 “Recycling and Disposal” for proper treatments.
CE MARK
This equipment conforms to the basic requirements of the EU guideline
governing low voltage and electromagnetic compatibility.
IM-S2-XLX-MII-EN-V2.4
9

3 Product information
3.1 Summary
Autarco XLX-MII series grid tied inverters are state of the art, high efficiency, robust and reliable
grid tied inverters at the best price quality ratio available. They are easy to install and carry a
standard 5 year product warranty which is extendable to 15 years. Our rigorous quality control
and testing facilities guarantee Autarco inverters meet the highest quality standards possible.
These inverters are the key to our international track record of delivering extremely reliable solar
power solutions.
Key features:
●Maximum efficiency of 98.6%
●7” LCD colour display
●3/4 MPPT with wide voltage
range
●Low turn off voltage
●High enclosure protection class
IP65
●Silent design using convection cooling principle
●Standard 5 year product warranty which is
extendable to 15 years
●Standard with wireless monitoring
●Optional integrated DC switch
●High range of protective functions
For full specifications please see chapter 12 “Product specifications”.
3.2 Product identification
You can identify the inverter by the serial number (S/N) sticker on the side of the inverter.
Important electrical specification can also be found on the label which can be found on the right
side of the inverter housing. Do not remove the label or the serial number as this voids the
product warranty.
XLX-MII series Inverters
10

installation and operation manual
3.3 Product Overview
A. Inverter cover
B. LED light - POWER
C. LED light - OPERATION
D. LED light - ALARM
E. Display
F. Escape key
G. Up key
H. Down key
I. Enter key
J. DC switch
K. DC inputs
L. Meter
M. AC output
N. DRM
IM-S2-XLX-MII-EN-V2.4
11

4 Handling
4.1 Product handling
Instructions for handling the inverter:
1. The red circles denote cut outs on the product package.
2. Push the cut outs to form handles for moving the inverter.
3. Open the carton, then two people handle both sides of inverter through the area denoted
dotted line.
XLX-MII series Inverters
12

installation and operation manual
5 Installation
5.1 Safety
DANGER! Do not install the inverter near flammable or explosive items.
WARNING! The installation must be performed by qualified personnel and in
compliance with national and local standards and regulations.
This inverter will be connected to a high voltage DC power generator and AC grid.
Inappropriate installation may also jeopardize the life span of the inverter.
The installation site must have good ventilation conditions. Direct exposure to intense
sunshine is not recommended.
5.2 Mounting instructions
●The inverter is suitable for outdoor and indoor installation.
●Vertical installation is recommended, with a maximum inclination of 15⁰ backwards.
●Make sure the mounting wall is strong enough to hold the weight of the inverter.
●The ambient temperature of the installation site should be between -20 ⁰C and +60 ⁰C.
●It is not recommended that the inverter is exposed to direct sunshine.
●Make sure of ample ventilation at installation site, insufficient ventilation may reduce the
performance of the electronic components inside the inverter and shorten the lifespan of
the inverter.
IM-S2-XLX-MII-EN-V2.4
13

5.3 Safety clearance
Caution! Make sure heat sinks are out of reach of children.
Observe the following minimum clearances to walls and other mounted equipment:
A minimum clearance in front of the inverter of 1000mm is required for maintenance.
XLX-MII series Inverters
14

installation and operation manual
5.4 Mounting procedure
Step 1 — The wall bracket has the dimensions below. Please ensure the positions of the
holes are suitable for fitting expansion bolts.
Step 2 — Mount the wall bracket onto the mounting wall with appropriate screws plugs.
IM-S2-XLX-MII-EN-V2.4
15

Step 3 — Lower the inverter onto the bracket. The screw holes in the wall bracket should
align with the raised convex on the inverter bracket.
Step 4 — Fix the bottom of the inverter to the wall bracket with the M4x9mm screws.
XLX-MII series Inverters
16

installation and operation manual
6 Electrical installation
DANGER! This inverter will be connected to a high voltage DC power generator and
AC grid. The installation must be performed by qualified personnel and in compliance
with national and local standards and regulations
6.1 AC connection
DANGER! Never connect or disconnect the connectors under load.
NOTICE! The AC connection to the electrical distribution grid must be performed
only after receiving authorization from the utility that operates the grid.
NOTICE! Make sure to set the correct grid standard as part of system
commissioning, see chapter 7.6.
The Autarco inverter is equipped with an integrated Residual Current Protective Device (RCPD) and
Residual Current Operated Monitor (RCOM). The RCOM will detect the volume of the leakage
current and compare it with the expected value, if the leakage current exceeds the permitted
range, the RCPD will disconnect the inverter from the AC load.
If regulations in the country of installation stipulate an external Residual Current Device (RCD), you
must use a device with a tripping threshold of 100 mA or more. For the XLX-series we recommend
to usea 300 mARCD.
A type “A”RCDcan be used in accordance with our “Manufacturer’s declaration for usage of
residual current devices”. Contact Autarco for advice.
The AC cable used must be dimensioned in accordance with any local and national directives on
cable dimensions which specify requirements for the minimum conductor cross-section. Cable
dimensioning factors are e.g.: nominal AC current, type of cable, type of routing, cable bundling,
ambient temperature and maximum specified line losses.
We recommend 10-35 mm² 105˚C cable with resistance lower than 1.5 ohm. If the cable is longer
than 100m, we recommend to use 16-35 mm² cable.
IM-S2-XLX-MII-EN-V2.4
17

In the table below you find the recommended AC-cable. Make sure that the resistance of the cable
is lower than 1.5 ohm.
Strip the AC cable off for 80mm and then strip individual strands at S2 length. S2 must be as long
as S1.
Strip the insulation of the wire past the cable crimping area of the OT terminal, then use a
hydraulic crimp tool to crimp the terminal. The crimped portion of the terminal must be insulated
with heat-shrinkable tube or insulating tape.
If chosing aluminum alloy cable, you must use copper aluminum (bi-metallic) transfer terminal
and anti-oxidant grease in order to avoid direct contact between copper bar and Aluminum alloy
cable. (Select a copper aluminum transfer terminal based on your cable specification).
Leave the AC breaker disconnected to ensure it does not close unexpectedly.
Step 1 — Remove the 4 screws on the inverter junction box and remove the junction box
cover
Step 2 — Insert the cable through the nut, sheath, and the AC terminal cover.
Step 3 — Connect the cable to the AC terminal block in turn, using a socket wrench.
Step 4 — Tighten the screws on the terminal block. The required torque is 3~4Nm.
Step 5 — Push the AC terminal along the rail to the inside of the inverter, and then
tighten the 4 screws
WARNING! Please do not put the insulating layer of the cable into the terminal when
tightening the screw, otherwise it will cause poor contact.
XLX-MII series Inverters
18

installation and operation manual
NOTICE! It is important that the AC wires are connected to the right terminals as
indicated by the “L”, “N” and “Earthing” symbols on each AC connector.
In some countries a second protective conductor is required as a matter of principle. In
each case, observe the applicable regulations for the site.
The AC connection to the electrical distribution grid must be performed only after
receiving authorization from the utility that operates the grid.
Always use separate fuses for consumer load. Use dedicated circuit breakers with load switch
functionality for load switching.
6.2 RS485 Connection
Install the RS485 communication cables through the terminal block. Recommended cable cross sectional area is
0.2 - 1.5mm², the cable outer diameter is 5mm -10mm, the cable length shall not exceed 3m.
See port definitions below.
Terminal block connection
1. Use a wire stripper to peel off the insulation layer of the communication cables to a certain
length as shown in the figures below.
IM-S2-XLX-MII-EN-V2.4
19

2. Screw off the covers of "COM2" and "COM3" on the inverter as shown in Figure 5.29.
3. Insert the communication cables into “COM2”and “COM3”ports.
4. Fasten the cables onto the pluggable terminals provided in the accessory package.
5. Match the pluggable terminals to the terminal block in the inverter and press to fasten it.
(!) After cable installation, fasten the screws of the AC terminal cover to prevent water damage.
6.3 Circuit breaker rating
The selection of the mains circuit breaker rating depends on the wiring design (wire cross-section
area), cable type, wiring method, ambient temperature, inverter current rating etc. Derating of the
circuit breaker rating may be necessary due to self-heating or if exposed to heat.
S2.XLX25000S-
MII
S2.XLX30000S
-MII
S2.XLX33000S
-MII
S2.XLX360
00S-MII
S2.XLX4000
0S-MII
Max. AC current (A)
41.8
50.2
55.1
60.2
66.9
Recommended fuse type
gL/gG or comparable
automatic circuit breaker
rating(A)
50
63
63
63
80
DANGER! No consumer load should be applied between the mains circuit breaker
and the inverter.
XLX-MII series Inverters
20