Page 1
EN
PV Inverter
SUNNY MINI CENTRAL 4600A / 5000A / 6000A
Installation Manual
SMC46-60A11-IA-en-81 | IME-SMC50A_60A | Version 8.1
Page 2
Page 3
SMA Solar Technology AG Table of Contents
Table of Contents
1 Information on this Manual. . . . . . . . . . . . . . . . . . . . . . . . . 7
1.1 Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.2 Target Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.3 Additional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.4 Symbols Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 Intended Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2 Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3 Explanation of Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.3.1 Symbols on the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.3.2 Symbols on the Type Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3 Unpacking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1 Scope of Delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2 Identifying the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4 Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2 Selecting the Mounting Location. . . . . . . . . . . . . . . . . . . . . . . . 15
4.3 Mounting the Inverter using the Wall Mounting Bracket . . . . . 17
5 Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.1 Overview of the Connection Area . . . . . . . . . . . . . . . . . . . . . . 20
5.1.1 Exterior View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.1.2 Interior View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.2 Connection to the Electricity Grid (AC). . . . . . . . . . . . . . . . . . . 22
5.2.1 Conditions for the AC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.2.2 Connecting the Inverter to the Electricity Grid (AC) . . . . . . . . . . . . . . . . . . . 24
5.2.3 Additional Earthing of the Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Installation Manual SMC46-60A11-IA-en-81 3
Page 4
Table of Contents SMA Solar Technology AG
5.3 Setting the Display Language . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5.4 Connecting the PV Array (DC) . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.4.1 Conditions for DC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.4.2 Assembling the DC Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.4.3 Opening the DC Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.4.4 Connecting the PV Array (DC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.5 Connecting the SMA Power Balancer . . . . . . . . . . . . . . . . . . . 34
5.5.1 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.5.2 Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5.5.3 Function Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
5.6 Communication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
5.7 Setting the Grid and Country Parameters . . . . . . . . . . . . . . . . . 42
5.7.1 Setting the Installation Country . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
5.7.2 Setting the Stand-Alone Grid Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
5.7.3 Additional Country Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
6 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
6.1 Commissioning the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
6.2 Only for Italy: Self-Test in Accordance with CEI 0-21. . . . . . . . 45
6.2.1 Starting the Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
6.2.2 Abortion of the Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
6.2.3 Restarting the Self-Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
6.3 Display Messages During the Start-up Phase . . . . . . . . . . . . . . 47
7 Opening and Closing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
7.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
7.2 Opening the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
7.3 Closing the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
8 Maintenance and Cleaning. . . . . . . . . . . . . . . . . . . . . . . . 53
8.1 Cleaning the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
8.2 Checking Heat Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
4 SMC46-60A11-IA-en-81 Installation Manual
Page 5
SMA Solar Technology AG Table of Contents
8.2.1 Cleaning the Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
8.2.2 Checking the Fans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
8.2.3 Cleaning the Ventilation Grids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
8.3 Checking the Electronic Solar Switch (ESS) for Wear . . . . . . . 57
9 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
9.1 Blink Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
9.2 Error Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
9.3 Red LED is Permanently Glowing . . . . . . . . . . . . . . . . . . . . . . . 63
9.3.1 Checking the PV Array for Earth Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
9.3.2 Checking the Function of the Varistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
10 Decommissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
10.1 Dismounting the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
10.2 Packing the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
10.3 Storing the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
10.4 Disposing of the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
11 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
11.1 DC/AC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
11.1.1 Sunny Mini Central 4600A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
11.1.2 Sunny Mini Central 5000A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
11.1.3 Sunny Mini Central 6000A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
11.2 General Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
11.3 Protective Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
11.4 Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
11.5 Climatic Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
11.6 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
11.7 Electronic Solar Switch (ESS) . . . . . . . . . . . . . . . . . . . . . . . . . . 78
11.8 Torques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
11.9 Earthing Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Installation Manual SMC46-60A11-IA-en-81 5
Page 6
Table of Contents SMA Solar Technology AG
12 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
13 Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
6 SMC46-60A11-IA-en-81 Installation Manual
Page 7
SMA Solar Technology AG Information on this Manual
1 Information on this Manual
1.1 Validity
This installation manual describes the assembly, installation, commissioning, maintenance and
troubleshooting of the following SMA inverters:
• Sunny Mini Central 4600A (SMC 4600A, SMC 4600A-11)
• Sunny Mini Central 5000A (SMC 5000A, SMC 5000A-11)
• Sunny Mini Central 6000A (SMC 6000A, SMC 6000A-11)
Store this manual where it will be accessible at all times.
1.2 Target Group
This manual is for the use of electrically skilled persons. The tasks described in this manual must be
performed by electrically skilled persons only.
1.3 Additional Information
You will find further information on special topics, such as the design of a miniature circuit-breaker or
the description of the operating parameters, in the download area at www.SMA-Solar.com.
Refer to the user manual provided for detailed information on how to operate the inverter.
Installation Manual SMC46-60A11-IA-en-81 7
Page 8
Information on this Manual SMA Solar Technology AG
1.4 Symbols Used
The following types of safety precautions and general information are used in this manual:
DANGER!
DANGER indicates a hazardous situation which, if not avoided, will result in death or
serious injury.
WARNING!
WARNING indicates a hazardous situation which, if not avoided, can result in death or
serious injury.
CAUTION!
CAUTION indicates a hazardous situation which, if not avoided, could result in minor or
moderate injury.
NOTICE!
NOTICE indicates a situation which, if not avoided, could result in property damage.
Information
An Information block provides valuable hints for the efficient installation and operation of
your product.
☑ This symbol indicates the result of an action.
8 SMC46-60A11-IA-en-81 Installation Manual
Page 9
SMA Solar Technology AG Safety
2 Safety
2.1 Intended Use
The Sunny Mini Central is a PV inverter which converts the direct current of the PV array to alternating
current and feeds it into the power distribution grid.
Principle of a PV plant with Sunny Mini Central
The Sunny Mini Central may only be operated with PV arrays (PV modules and cabling) of protection
class II. Do not connect any energy sources other than PV modules to the Sunny Mini Central.
When designing the PV plant, ensure that the permitted operating range of all components is
complied with at all times. The free design software "Sunny Design" (www.SMA-Solar.com) will assist
you. The manufacturer of the PV modules must have approved the modules for use with this
Sunny Mini Central. You must also ensure that all measures recommended by the module
manufacturer for the long-term maintenance of the module properties are taken (see also Technical
Information "Module Technology" at www.SMA-Solar.com).
For safety reasons, it is not permitted to modify the product or install components that are not explicitly
recommended or distributed by SMA Solar Technology AG.
Installation Manual SMC46-60A11-IA-en-81 9
Page 10
Safety SMA Solar Technology AG
2.2 Safety Precautions
DANGER!
Danger to life due to high voltages in the inverter
• All work on the inverter must be carried out by skilled persons only.
CAUTION!
Risk of burns due to hot enclosure parts
• Do not touch the enclosure body during operation.
• Only touch the enclosure lid during operation.
NOTICE!
Water- and dust intrusion can damage the inverter.
Once the Electronic Solar Switch has been pulled out, the inverter only provides protection
rating IP21. The inverter is thus no longer protected against water- and dust intrusion. In
order that the degree of protection IP65 is also maintained during temporary
decommissioning, proceed as follows:
• Release and disconnect all DC connectors.
• Open all DC connectors and remove the cables.
• Close all DC inputs using the corresponding DC connectors and the supplied sealing
plugs.
• Firmly re-connect the Electronic Solar Switch.
NOTICE!
Damage to the inverter due to moisture and dust intrusion
If the Electronic Solar Switch is not plugged in or incorrectly plugged in during operation,
moisture and dust can penetrate the inverter.
If the Electronic Solar Switch is not correctly plugged in, this can cause contacts to wear in
the Electronic Solar Switch or the Electronic Solar Switch might fall out. This can result in
yield loss and damage to the Electronic Solar Switch.
Always plug in the Electronic Solar Switch as described in the following:
• Do not tighten the screw in the Electronic Solar Switch.
• Firmly plug in the Electronic Solar Switch until it is flush with the enclosure.
• Ensure that the maximum distance between the Electronic Solar Switch and the
enclosure is 1 mm.
10 SMC46-60A11-IA-en-81 Installation Manual
Page 11
SMA Solar Technology AG Safety
Earthing of the PV array
Comply with the local regulations for earthing the modules and the PV array.
In order to maintain the best possible protection for both the PV plant and human life,
SM A Solar T ech nology A G re commend s co nnecti ng t oge the r the PV a rray frame and other
electrically conductive surfaces and earthing them.
2.3 Explanation of Symbols
This section gives an explanation of all the symbols found on the inverter and on the type label.
2.3.1 Symbols on the Inverter
Symbol Explanation
Operation display
Indicates the operating state of the inverter
Earth fault or varistor defective
Read Section 9.3 "Red LED is Permanently Glowing" (page63).
Error or fault
Read Section 9 "Troubleshooting" (page58).
You can operate the display by tapping the enclosure lid.
• Tapping once: the backlight switches on or the display scrolls to the
next display message.
• Tapping twice in quick succession: The inverter shows the display
messages from the start-up phase again (see Section 6.3 "Display
Messages During the Start-up Phase" (page47)).
DC load disconnection unit Electronic Solar Switch (ESS)
• When the Electronic Solar Switch is plugged in, the DC electric
circuit is closed.
• To interrupt the DC electric circuit and safely disconnect the
inverter when under load, you must first remove the
Electronic Solar Switch and then all DC connectors .
®
QR Code
You will find information on the SMA bonus programme at
www.SMA-Bonus.com.
for SMA bonus programme
Installation Manual SMC46-60A11-IA-en-81 11
Page 12
Safety SMA Solar Technology AG
2.3.2 Symbols on the Type Label
Symbol Explanation
Beware of hazardous voltage
The inverter operates at high voltages. All work on the inverter must be
carried out by skilled persons only.
Beware of hot surface.
The inverter can get hot during operation. Avoid contact during operation.
Observe all documentation that accompanies the inverter.
The inverter must not be disposed of together with the household waste.
For more information on disposal, see Section 10.4 "Disposing of the
Inverter" (page69).
CE marking
The inverter complies with the requirements of the applicable EC directives.
The inverter has a transformer.
Direct current (DC)
Alternating current (AC)
Outdoor
The product is suitable for outdoor installation.
Degree of protection: IP65
The inverter is protected against dust intrusion and water jets from any
angle.
RAL quality mark for solar products
The inverter complies with the requirements of the German Institute for
Quality Assurance and Labelling.
12 SMC46-60A11-IA-en-81 Installation Manual
Page 13
SMA Solar Technology AG Unpacking
3 Unpacking
3.1 Scope of Delivery
Check the delivery for completeness and any visible external damage. Contact your specialist dealer
if anything is damaged or missing.
Object Quantity Description
A 1 Sunny Mini Central
B 1 Ventilation grid (right/left)
C 1 Wall mounting bracket
D 1 DC load disconnection unit Electronic Solar Switch (ESS)
E 8 DC connectors (4 x positive, 4 x negative)
F 8 Sealing plug for the DC connectors
G 1 Cable gland for AC connection
H 1 Counter nut for cable gland at AC connection
I 1 Clamping bracket for additional earthing
K 2 Conical spring washers:
1 x for enclosure lid screws (replacement), 1 x for earth terminal
L 2 Cheese-head screws (M6x16):
1 x for enclosure lid (replacement), 1 x for earth terminal
M 2 Jumpers (1 x for fan test, 1 x for the SMA Power Balancer wiring)
N 2 Cylinder head screws (M6x8) for securing the inverter to the wall mounting
bracket
O 1 Silicone tube for insulating the SMA Power Balancer connection cable
P 1 Installation manual
Q 1User manual
Installation Manual SMC46-60A11-IA-en-81 13
Page 14
Unpacking SMA Solar Technology AG
Object Quantity Description
R 1Set of documents with explanations and certificates
S 1 Supplementary sheet with inverter default settings
3.2 Identifying the Inverter
You can identify the inverter by the type label. The type label is located on the right-hand side of the
enclosure.
The inverter serial number (Serial No.), the type (Type/Model) and other device-specific
characteristics are specified on the type label.
14 SMC46-60A11-IA-en-81 Installation Manual
Page 15
SMA Solar Technology AG Assembly
4 Assembly
4.1 Safety
DANGER!
Danger to life due to fire or explosions
Despite careful construction, electrical devices can cause fires.
• Do not mount the inverter on flammable construction materials.
• Do not mount the inverter in areas where highly flammable materials are stored.
• Do not mount the inverter in a potentially explosive atmosphere.
CAUTION!
Risk of burns due to hot enclosure parts
• Mount the inverter in such a way that it cannot be touched inadvertently.
CAUTION!
Risk of injury due to the heavy weight of the inverter
• Take the inverter's weight of approx. 63 kg into account when mounting.
4.2 Selecting the Mounting Location
Take the following requirements into consideration when selecting the mounting location:
• The mounting method and location must be suitable for the inverter's weight and dimensions
(see Section 11 "Technical Data" (page70)).
• Mount on a solid surface.
• The mounting location must be clear and safely accessible at all times without the use of
additional aids such as scaffolding or lifting platforms. If this is not the case, service work may
be restricted.
• Mount vertically or tilted backwards by max. 45°.
• The connection area must face downwards.
Installation Manual SMC46-60A11-IA-en-81 15
Page 16
Assembly SMA Solar Technology AG
500 mm
300 mm
300 mm
50 mm
300 mm
• Never mount the device with a forward tilt.
• Never mount the device with a sideways tilt.
• Do not mount horizontally.
• Mount at eye level in order that operating states can be read at all times.
• The ambient temperature should be below 40°C to ensure optimum operation.
• Do not expose the inverter to direct solar irradiation as this could cause power derating due to
overheating.
• In order to avoid audible vibrations in living areas, do not mount the unit on plasterboard walls
or similar. When in operation, the inverter emits noise which may be perceived as annoying in
living areas.
• Observe the minimum clearances to walls, other
inverters and objects as shown in the diagram in
order to ensure sufficient heat dissipation and to
have sufficient space for removing the
Electronic Solar Switch.
Multiple inverters installed in areas with high ambient temperatures
There must be sufficient clearance between the individual inverters to ensure that the
cooling air of the adjacent inverter is not drawn in.
If necessary, increase the clearances and make sure there is enough fresh-air supply to
ensure sufficient cooling of the inverters.
16 SMC46-60A11-IA-en-81 Installation Manual
Page 17
SMA Solar Technology AG Assembly
4.3 Mounting the Inverter using the Wall Mounting Bracket
1. Mark the position of the drill holes using the wall mounting bracket and drill the holes. Use at
least 2 of the 6 holes, 1 hole on the left- and right-hand sides respectively.
Installation Manual SMC46-60A11-IA-en-81 17
Page 18
Assembly SMA Solar Technology AG
CAUTION!
Risk of injury due to the heavy weight of the inverter
The inverter weighs approx. 63 kg.
• Attach the wall mounting bracket using the corresponding mounting material
(dependent on the surface).
• Use the side handles above and below
or a steel rod (maximum diameter of
30 mm) for transport and mounting. The
rod must be pushed through the
enclosure openings.
2. Secure the wall mounting bracket to the wall using
appropriate screws and washers.
3. Hang the inverter onto the wall mounting bracket
using the mounting recess in the rear of the
enclosure.
18 SMC46-60A11-IA-en-81 Installation Manual
Page 19
SMA Solar Technology AG Assembly
4. Screw the inverter onto the wall mounting bracket
on both sides using the screws (M6x8) provided.
Only tighten the screws hand-tight.
5. Check to ensure that the inverter is securely in
place.
6. Close the recessed grips using the ventilation grids
supplied. To help you identify the sides, the
ventilation grids are marked on the inside with
"rechts/right" and "links/left".
The ventilation grids prevent intrusion of dust
and insects, and can be reordered from
SMA Solar Technology AG as required
(see Section 13 "Contact" (page80)).
Optional Anti-Theft Protection
To protect the inverter against theft, the back
panel can be secured to the wall at the bottom
using two "safety screws".
The other two holes are spares.
Installation Manual SMC46-60A11-IA-en-81 19
Page 20
Electrical Connection SMA Solar Technology AG
5 Electrical Connection
NOTICE!
Electrostatic discharge can damage the inverter
Internal components of the inverter can be irreparably damaged by electrostatic
discharge.
• Earth yourself before touching a component part.
5.1 Overview of the Connection Area
5.1.1 Exterior View
The following figure shows the assignment of the individual connection areas on the underside of the
inverter.
Object Description
A DC connectors for connecting the PV strings
B Socket for connecting the Electronic Solar Switch (ESS) DC switch disconnector
C Cable glands for optional communication via RS485 (PG16)
D Cable gland for connection to the electricity grid (AC) (12 mm ... 25 mm)
E Cable glands for the SMA Power Balancer
20 SMC46-60A11-IA-en-81 Installation Manual
Page 21
SMA Solar Technology AG Electrical Connection
5.1.2 Interior View
The following figure shows the various components and connection areas of the open inverter.
Object Description
A Connection area and slots for communication
B Display
C Jumper slot for fan test
D LEDs for displaying the operating states
E Jumper slot for SMA Power Balancer
Installation Manual SMC46-60A11-IA-en-81 21
Page 22
Electrical Connection SMA Solar Technology AG
Object Description
F Terminals for the SMA Power Balancer
G Flat male tab for earthing the cable shield when connecting the SMA Power Balancer
H Additional terminal for earthing
I Terminals for AC cables
K Cable glands for the SMA Power Balancer
L Cable gland for the AC cable
M Cable glands for communication
N Screw fixture of shield connection terminal for data cable
O DC connector
P Connection socket for the Electronic Solar Switch (ESS)
Q Varistors
5.2 Connection to the Electricity Grid (AC)
5.2.1 Conditions for the AC Connection
Connection requirements of the network operator
Always observe the connection requirements of your network operator.
Cable Dimensioning
Use Sunny Design Version 2.0 or higher for sizing the conductor cross-sections (see design software
"Sunny Design" at www.SMA-Solar.com).
Halving the cable losses
If three inverters with symmetrical feed-in are combined to form a three-phase system, the
neutral conductor is not subject to any load and the cable losses are halved. Thus, the
maximum possible cable length is doubled.
Cable Requirements
Item Description Value
A External diameter 12 mm … 25 mm
B Conductor cross-section 6 mm² … 16 mm²
C Stripping length approx. 16 mm
22 SMC46-60A11-IA-en-81 Installation Manual
Page 23
SMA Solar Technology AG Electrical Connection
Load Disconnection Unit
You must install a separate miniature circuit-breaker for each inverter in order to ensure that the
inverter can be securely disconnected under load. The maximum permissible fuse protection can be
found in Section 11 "Technical Data" (page70).
Detailed information and examples on the design of miniature circuit-breakers are available in the
Technical Information "Miniature Circuit-Breaker" to be found in the download area of
SMA Solar Technology AG at www.SMA-Solar.com.
DANGER!
Danger to life due to fire
When more than one inverter is connected in parallel to the same miniature circuit-breaker,
the protective function of the miniature circuit-breaker is no longer guaranteed. This could
result in a cable fire or destruction of the inverter.
• Never connect several inverters to the same miniature circuit-breaker.
• Observe the maximum permissible fuse protection of the inverter when selecting the
miniature circuit-breaker.
DANGER!
Danger to life due to fire
When a generator (inverter) and a load are connected to the same miniature circuitbreaker, the protective function of the miniature circuit-breaker is no longer guaranteed.
The currents from the inverter and the electricity grid can accumulate to form overcurrents
which are not detected by the miniature circuit-breaker.
• Never connect loads between the
inverter and the miniature circuit-breaker
without fuse protection.
• Always fuse loads separately.
NOTICE!
Damage to the inverter by use of screw-type fuses as switch-disconnectors
A s cre w-t ype fus e, e .g. DIA ZED fus e or NEO ZED fus e, i s no t a s witch-disconnector and thus
may not be used as a load disconnection unit. A screw-type fuse only acts as cable
protection.
If the inverter is disconnected under load using a screw-type fuse, the inverter may be
damaged.
• Use o nly a switc h-disconnecto r or a mi niatu re circuit-bre aker as a load discon necti on
unit.
Installation Manual SMC46-60A11-IA-en-81 23
Page 24
Electrical Connection SMA Solar Technology AG
5.2.2 Connecting the Inverter to the Electricity Grid (AC)
1. Check the mains voltage and compare with "V
The exact operating range of the inverter is specified in the operating parameters. The
corresponding document is available in the download area at www.SMA-Solar.com.
2. Disconnect the miniature circuit-breaker and secure against reconnection.
3. Loosen all screws of the enclosure lid and remove
the lid.
4. Remove the adhesive tape from the AC enclosure opening (see "D" on Page 20).
5. Insert the AC cable gland from the outside into the enclosure opening and tighten it from the
inside using the counter nut.
6. Unscrew the cable gland's swivel nut and lead it over the cable.
7. Lead the cable through the cable gland to the AC terminal.
8. Connect L, N and the protective conductor (PE) in
ac cor dan ce with t he l abe lling to the ter minal bl ock s
using a screwdriver.
The PE wire must be 5 mm longer than the L and N
conductors.
L and N must not be swapped.
" on the type label.
AC, nom
24 SMC46-60A11-IA-en-81 Installation Manual
Page 25
SMA Solar Technology AG Electrical Connection
9. Screw the swivel nut firmly onto the cable gland.
10. Secure the enclosure lid using all of the screws and
the corresponding conical spring washers.
Tighten the screws with 6 Nm torque in the order
shown in the figure on the right. The toothing of the
conical spring washers must be facing the
enclosure lid.
The scope of delivery of the inverter includes a
spare screw and conical spring washer.
DANGER!
Danger to life due to enclosure lid carrying voltage
The earthing of the enclosure lid is ensured by the conical spring washers.
• Attach the conical spring washers for all 6 screws with the toothing facing towards
the enclosure lid.
DANGER!
Danger to life due to high voltages in the inverter
• Do not switch on the miniature circuit-breaker until the PV array has also been
connected and the inverter is securely closed.
☑ The inverter is connected to the electricity grid (AC).
5.2.3 Additional Earthing of the Enclosure
If the installation so requires, you can use the earth terminal to connect a second protective conductor
or as equipotential bonding.
Procedure
1. Plug the stripped earthing cable (D) under the
clamping bracket (C) (max. cross-section 16 mm²
or with bootlace ferrule max. 10 mm²).
2. Screw the clamping bracket tight using the screw
(A) and conical spring washer (B).
The to othing of t he conical spri ng washer m ust face
toward the clamping bracket.
☑ The inverter enclosure is additionally earthed.
Installation Manual SMC46-60A11-IA-en-81 25
Page 26
Electrical Connection SMA Solar Technology AG
5.3 Setting the Display Language
You can set the language of the display using the switches at the bott om of the dis pla y as sembly i nsi de
the inverter.
When selecting the display language, different switching settings apply to inverters that are set to the
Italian national standard CEI 0-21. You can see the standard to which the inverter was set upon
delivery on the type label and on the included supplementary sheet with the default settings. For more
information, see the Technical Description "Operating Parameters" at www.SMA-Solar.com.
Procedure
1. Open the inverter as described in Section 7.2 "Opening the Inverter" (page48).
2. Set the switches to the required language.
The following switch settings, except for CEI 0-21,
apply to all national standards:
Language Rotary switch S2Rotary switch
S1
German B B
English B A
French A B
Spanish A A
The following switch settings apply to inverters
which are set to the national standard CEI 0-21:
Language Rotary switch S2Rotary switch
S1
Italian B A
English A A
German B B
French A B
3. Close the inverter as described in Section 7.3 "Closing the Inverter" (page51).
☑ The display language is set.
26 SMC46-60A11-IA-en-81 Installation Manual
Page 27
SMA Solar Technology AG Electrical Connection
5.4 Connecting the PV Array (DC)
5.4.1 Conditions for DC Connection
Using Y adaptors for the parallel connection of strings
Y adaptors must not be visible or freely accessible in close proximity to the inverter.
• The DC circuit must not be interrupted by Y adaptors.
• Observe the procedure for disconnecting the inverter as described in Section 7.2
"Opening the Inverter" (page48).
• Requirements for the PV modules of the connected strings:
– same type
–same quantity
– identical alignment
– identical tilt
• The connection cables of the PV modules must be equipped with connectors. The connectors
required for DC connection are included in the scope of delivery.
• The following thresholds at the DC input of the inverter must not be exceeded:
Maximum input voltage Maximum input current
600 V (DC) 26.0 A (DC)
WARNING!
Danger to life due to electric shock or fire
The maximum possible input current per string is limited by the connectors used. If the
connectors are overloaded, an electric arc may occur and there is a risk of fire.
• Ensure that the input current per string does not exceed the maximum through-fault
current of the connectors used.
Installation Manual SMC46-60A11-IA-en-81 27
Page 28
Electrical Connection SMA Solar Technology AG
... ...
5.4.2 Assembling the DC Connectors
All PV display module connection cables must be equipped with the DC connectors supplied before
connecting them to the inverter.
Assemble the DC connectors as described below. Be sure to observe the correct polarity. The DC
connectors are marked with the symbols "+" and " − ".
Cable requirements:
• Use a PV1-F cable.
Procedure
1. Lead the stripped cable all the way into the plug.
2. Press the clamping bracket down until it audibly
snaps into place.
3. Ensure that the cable is correctly positioned:
Result Measure
☑ If the stranded wires are visible in the
• Proceed to Step 4.
chamber of the clamping bracket, the cable
is correctly positioned.
28 SMC46-60A11-IA-en-81 Installation Manual
Page 29
SMA Solar Technology AG Electrical Connection
Result Measure
☑ If the stranded wires are not visible in the
chamber, the cable is not correctly
positioned.
• Release the clamping bracket. To do so,
insert a screwdriver into the clamping
bracket to lever it open (blade width:
3.5 mm).
• Remove the cable and go back to step 1.
4. Push the screw connection to the thread and fasten to a torque of 2 Nm.
☑ The DC connectors are assembled and can now be connected to the inverter as described in
Section 5.4.4 "Connecting the PV Array (DC)" (page31).
Installation Manual SMC46-60A11-IA-en-81 29
Page 30
Electrical Connection SMA Solar Technology AG
5.4.3 Opening the DC Connector
1. Unscrew the screw connection.
2. Unlock the DC connector: Insert a screwdriver into
the snap slot on the side and lever it out
(blade width: 3.5 mm).
3. Carefully pull the DC connector apart.
4. Release the clamping bracket. To do so, insert a
screwdriver into the clamping bracket to lever it
open (blade width: 3.5 mm).
5. Remove the cable.
☑ The cable is now detached from the DC connector.
30 SMC46-60A11-IA-en-81 Installation Manual
Page 31
SMA Solar Technology AG Electrical Connection
5.4.4 Connecting the PV Array (DC)
DANGER!
Danger to life due to high voltages in the inverter
• Before connecting the PV array, ensure that the miniature circuit-breaker is switched
off.
NOTICE!
Excessive voltages can destroy the multimeter
• Only use multimeters with a DC input voltage range of up to at least 1,000 V.
1. Disconnect the miniature circuit-breaker and secure against reconnection.
2. Pull the Electronic Solar Switch downward, slightly
towards the wall.
3. Check the connection cable of the PV modules for
correct polarity and make sure that the maximum
input voltage of the inverter is not exceeded.
At an ambient temperature above 10°C, the opencircuit voltage of the PV modules must not be more
than 90% of the maximum inverter input voltage.
If this is not the case, review the plant design and
the PV module circuitry. At lower ambient
temperatures, the maximum input voltage of the
inverter could otherwise be exceeded.
NOTICE!
Destruction of the inverter due to overvoltage
If the voltage of the PV modules exceeds the maximum input voltage of the inverter, the
inverter could be destroyed by overvoltage.
This will void all warranty claims.
• Do not connect strings with an open-circuit voltage greater than the maximum input
voltage of the inverter.
• Check the plant design.
Installation Manual SMC46-60A11-IA-en-81 31
Page 32
Electrical Connection SMA Solar Technology AG
+
1
2
+
+
4. Check the strings for earth faults as described in Section 9.3.1 "Checking the PV Array for Earth
Faults" (page64).
5. Connect the assembled DC connectors to the inverter.
☑ The DC connectors click audibly into place.
6. In order to seal the inverter, all unused DC inputs must be closed using DC connectors and
sealing plugs:
Sealing plugs
•Do not insert the sealing plugs directly into the DC inputs on the inverter.
– For unused DC connectors, push down the
clamping bracket and push the screw
connection up to the thread.
– Insert the sealing plug into the DC connector.
– Tighten the DC connector (torque: 2 Nm).
32 SMC46-60A11-IA-en-81 Installation Manual
Page 33
SMA Solar Technology AG Electrical Connection
– Insert the DC connectors with sealing plugs into
the corresponding DC inputs on the inverter.
☑ The DC connectors click audibly into place.
7. Ensure that all DC connectors are securely in place.
8. Check the Electronic Solar Switch for wear, as
described in Section 8.3 "Checking the Electronic
Solar Switch (ESS) for Wear" (page57) and attach
it firmly.
NOTICE!
Damage to the inverter due to moisture and dust intrusion
If the Electronic Solar Switch is not plugged in or incorrectly plugged in during operation,
moisture and dust can penetrate the inverter.
If the Electronic Solar Switch is not correctly plugged in, this can cause contacts to wear in
the Electronic Solar Switch or the Electronic Solar Switch might fall out. This can result in
yield loss and damage to the Electronic Solar Switch.
Always plug in the Electronic Solar Switch as described in the following:
• Do not tighten the screw in the Electronic Solar Switch.
• Firmly plug in the Electronic Solar Switch until it is flush with the enclosure.
• Ensure that the maximum distance between the Electronic Solar Switch and the
enclosure is 1 mm.
☑ The PV array is connected.
You can now commission the inverter as described in Section 6 "Commissioning" (page44).
The following connections are optional.
Installation Manual SMC46-60A11-IA-en-81 33
Page 34
Electrical Connection SMA Solar Technology AG
5.5 Connecting the SMA Power Balancer
The Sunny Mini Central is equipped with the SMA Power Balancer as standard. This enables a
circuitry of three Sunny Mini Central inverters to a three-phase feed-in system.
Each of the three Sunny Mini Central inverters in a group must be connected to a different line
conductor of the low-voltage grid (L1, L2 and L3).
By activating this electronic circuit, you can stipulate how the other two Sunny Mini Central inverters
are to react if there is a device fault with the third Sunny Mini Central or there is a mains voltage fault
in its line conductor.
Three-Phase Grid Connection
For further information on this subject, see the Technical Information "Three-Phase Grid
Connection with Sunny Mini Central" in the download area at www.SMA-Solar.com.
The connections for the SMA Power Balancer are galvanically isolated from the rest of the
Sunny Mini Central electronic circuit.
5.5.1 Configuration
If the national standard VDE-AR-N4105-MP or VDE-AR-N4105-HP is set, the SMA Power Balancer is
activated by default and set to the operating mode "PowerGuard" in SMC 4600A-11,
SMC 5000A-11 and SMC 6000A-11. All other national standards deactivate the
SMA Power Balancer by default in SMC 4600A-11, SMC 5000A-11 and SMC 6000A-11.
The SMA Power Balancer is always deactivated by default in SMC 4600A, SMC 5000A and
SMC 6000A, regardless of the national standard set.
The SMA Power Balancer can only be activated or configured using a communication product.
To change the "PowerBalancer" parameter, you need a personal access code – the so-called
SMA Grid Guard code. The application form for the personal access code is available in the
download area at www.SMA-Solar.com, in the "Certificate" category of the respective inverter.
The configuration options are described below.
34 SMC46-60A11-IA-en-81 Installation Manual
Page 35
SMA Solar Technology AG Electrical Connection
Configuration Options
There are four different configuration options for the "PowerBalancer" parameter.
Local connection requirements
Select the respective setting and always observe the local connection requirements and
provisions of your network operator.
•FaultGuard
This operating mode allows for the implementation of a three-phase mains voltage monitoring,
which also reacts to device faults.
– If one of the three inverters indicates a mains voltage fault and stops feeding in, the other
two inverters also disconnect from the electricity grid immediately.
– If one of the three inverters indicates a device fault and stops feeding in, the other two
inverters also disconnect from the electricity grid after five minutes.
Installation Manual SMC46-60A11-IA-en-81 35
Page 36
Electrical Connection SMA Solar Technology AG
•PhaseGuard
This operating mode allows for the implementation of three-phase mains voltage monitoring.
– If one of the three inverters indicates a mains voltage fault and stops feeding in, the other
two inverters also disconnect from the electricity grid automatically.
– If one of the three inverters indicates a device fault and stops feeding in, the other two
inverters are not affected and continue to feed in at full power.
36 SMC46-60A11-IA-en-81 Installation Manual
Page 37
SMA Solar Technology AG Electrical Connection
•Off
The SMA Power Balancer is deactivated (default setting).
– If one of the inverters displays a device fault or a mains voltage fault, only the affected
inverter disconnects from the electricity grid and the other two inverters continue to feed in
at full power.
•PowerGuard
This setting can be selected if the entire PV plant only consists of three Sunny Mini Central
inverters and in the event of a malfunction, the unbalanced load should be limited to 4.6 kVA
over a 10-minute average.
Different unbalanced load limitation for SMC 6000A-11 inverters for Italy
The unbalanced load for SMC 6000A-11 inverters set to the national standard CEI 0-21
is limited to 6 kVA over a 10-minute average.
– If one of the three inverters indicates a mains voltage fault or device fault and stops
feeding in, the other two inverters automatically limit their power over a 10 minute average
to 4.6 kVA.
Installation Manual SMC46-60A11-IA-en-81 37
Page 38
Electrical Connection SMA Solar Technology AG
5.5.2 Cabling
Cable Requirements
To connect the SMA Power Balancer, use a "LiYCY" cable of the following design:
• Indoors: LiYCY 2 x 2 x 0.25
• Outdoors: Li-2YCYv 2 x 2 x 0.25
Item Description
A Flexible insulation
B Shielding
C Twisted pair 2 (2 x 0.25 mm²)
D Twisted pair 1 (2 x 0.25 mm²)
Overview of the Connection Area
Object Description
A Screw terminals for the jumper wire
B Screw terminals for connecting the cables
C Jumper slot
38 SMC46-60A11-IA-en-81 Installation Manual
Page 39
SMA Solar Technology AG Electrical Connection
Object Description
D Flat male tab for earthing the cable shield
E Silicone tube/cable route
F Cable glands
Procedure
1. Open the inverter as described in Section 7.2 "Opening the Inverter" (page48).
2. Insert the cables into each inverter.
Use one of the two enclosure openings (F) on the right-hand side.
DANGER!
Danger to life due to high voltage in the event of a fault in the
SMA Power Balancer cable
• Sheath the positive and negative cable conductors in each inverter using the silicone
tube supplied.
• Cut the silicone tube to the required length.
• The silicone tube must completely cover the cable inside the inverter enclosure.
3. Lead the cable along the cable route (E) as far as the terminal block (B).
4. Earth the cable shield in each inverter at the PE terminal (D).
5. Sheath the positive and negative cable conductors in each inverter using bootlace ferrules.
6. Connect the positive and negative poles to the
corresponding screw terminals.
7. In order to link the three inverters, connect the positive and negative conductors from the two
other inverters to the terminal block of the middle inverter.
The cable length between 2 inverters may not exceed 300 m.
Installation Manual SMC46-60A11-IA-en-81 39
Page 40
Electrical Connection SMA Solar Technology AG
8. Only plug one of the provided jumpers into the
lowest of the three slots in the middle inverter
(the one with two insulated wires for each terminal)
as depicted on the right.
Do not plug the jumpers in the lowest slot of the two
other inverters.
or
Bridge the "A" and "B" screw terminals on the
middle inverter using a jumper wire.
Do not bridge the "A" and "B" screw terminals in
the two other inverters.
9. Measure the electrical resistance between the
positive and negative poles of the terminal block in
the middle inverter.
☑ If the resistance is approximately 27.8 k Ω
(±370 Ω ), the SMA Power Balancer has been
connected correctly. If not, check the cabling.
10. Close all inverters as described in Section 7.3 "Closing the Inverter" (page51).
Connection with a Sunny Mini Central 9000TL, 10000TL or 11000TL
In order to be able to connect the SMA Power Balancer to a Sunny Mini Central 9000TL,
10000TL or 11000TL, the Sunny Mini Central 4600A, 5000A, 6000A must be equipped
with a special plug. Three inverters are then connected together using a special connection
cable.
You can order the plug and the connection cable from SMA Solar Technology AG or your
specialist dealer. Section 12 "Accessories" (page79) contains a list of the order numbers.
40 SMC46-60A11-IA-en-81 Installation Manual
Page 41
SMA Solar Technology AG Electrical Connection
E-today 0Wh
Mode MPP
Disturbance
PowerBalance
Disturbance
Vac-Bfr
Disturbance
PowerBalance
5.5.3 Function Test
To test whether the SMA Power Balancer operates correctly, proceed as follows.
1. Select the "PhaseGuard" setting of the "PowerBalancer" parameter for all three inverters.
2. Check whether all inverters in the group are feeding into the electricity grid normally.
☑ If the green LED is glowing continuously or if the
display message shown on the right appears,
proceed to step 3.
or
☑ If all inverters in this group show the display
message shown on the right: check the
installation of the SMA Power Balancer and
contact the SMA Service Line if necessary.
3. Switch off the miniature circuit-breaker of one of the
three inverters.
• The inverter with the deactivated miniature circuitbreaker will then indicate a mains voltage fault via
the display message shown on the right
("Bfr" and "Srr" are not relevant).
• The other two inverters will then also disconnect
from the electricity grid, displaying the display
message shown on the right.
• Both inverters subsequently switch to "Balanced"
mode.
☑ If the inverters react as described above, the
function test has been completed successfully.
If not, check the configuration.
4. If applicable, reset the "PowerBalancer" parameter to the desired setting in all inverters.
5. Switch the miniature circuit-breaker on again.
☑ The function test is complete.
Installation Manual SMC46-60A11-IA-en-81 41
Page 42
Electrical Connection SMA Solar Technology AG
5.6 Communication
The inverter is equipped with a slot for communication interfaces in order to communicate with special
data loggers (e.g., Sunny WebBox) or a PC with corresponding software (e.g., Sunny Data Control
or Sunny Explorer).
Refer to the respective communication interface manual for a detailed wiring diagram and an
installation description for the interface.
The active power of the inverter can be limited or its displacement power factor can be set externally
using the Power Reducer Box from SMA Solar Technology AG. Detailed information on the
Power Reducer Box is available in its technical description at www.SMA-Solar.com.
5.7 Setting the Grid and Country Parameters
Changing grid-relevant parameters and country parameters
To change grid-relevant parameters, you need a personal access code – the so-called
SMA Grid Guard code. The application form for the personal access code is available in
the download area at www.SMA-Solar.com, in the "Certificate" category of the respective
inverter.
You must discuss changes to these parameters with your network operator.
A detailed description of the operating parameters for the inverter is available in the download area
at www.SMA-Solar.com in the category "Technical Description" of the respective inverter.
5.7.1 Setting the Installation Country
Using the "Default" parameter, you can set the country of installation and/or the grid connection
standard valid for that country via a communication product (e.g., Sunny WebBox) or a PC with
corresponding software (e.g., Sunny Data Control or Sunny Explorer). This, however, is only required
if the inverter was originally ordered for another country. You can see the standard to which the
inverter was set upon delivery on the type label and on the included supplementary sheet with the
default settings.
42 SMC46-60A11-IA-en-81 Installation Manual
Page 43
SMA Solar Technology AG Electrical Connection
5.7.2 Setting the Stand-Alone Grid Operation
To operate the inverter in an off-grid system with Sunny Island, you must set the "Default" parameter
to stand-alone grid ("OFF-Grid") operation.
There are several ways of setting the inverter to stand-alone grid operation:
• Setting via Sunny WebBox
or
• Setting via Sunny Data Control or Sunny Explorer
DANGER!
Danger to life due to high voltages in the event of electricity grid failure
If you set the inverter to stand-alone grid operation, it does not fulfil any country-specific
standards or guidelines. If there is an electricity grid outage, there will consequently be a
danger of backfeed.
• Never operate the inverter directly on the electricity grid when set to stand-alone
grid operation.
5.7.3 Additional Country Parameters
Requirement for the setting
Set the installation country as described in Section 5.7.1 "Setting the Installation Country"
(page42) before setting the country parameter described here.
The deactivation criteria (voltage, frequency, impedance) are specified via country parameters as
with all Sunny Mini Central inverters.
The additional default country parameter "MVtgDirective" expands the deactivation limits of the
inverter for voltage and frequency to a maximum/minimum. This country setting may only be selected
if the PV plant or the inverter is operated with external three-phase decoupling protection, which will
automatically disconnect the inverter from the electricity grid if non-permissible voltage and frequency
values occur. Device protection is still guaranteed.
DANGER!
Danger to life due to electric shock if external decoupling protection is missing
With the country setting "MVtgDirective", the inverter may only be operated with an
ex ter nal thr ee- pha se d eco upl ing pro tec tio n de vic e wh ich com pli es w ith the cou ntr y-s pec ifi c
requirements.
Without such external decoupling protection, the inverter will not disconnect from the
electricity grid when the standard requirement is exceeded.
• Install external three-phase decoupling protection.
Installation Manual SMC46-60A11-IA-en-81 43
Page 44
Commissioning SMA Solar Technology AG
6 Commissioning
6.1 Commissioning the Inverter
1. Check the following requirements before commissioning:
– The inverter is securely in place
– AC cables are correctly connected (electricity grid)
– DC cables (PV strings) are fully connected
– Unused DC inputs are closed using the corresponding DC connectors and sealing plugs
– The enclosure lid is securely screwed into place
– The Electronic Solar Switch is securely connected
– The miniature circuit-breaker is correctly sized
2. Switch the miniature circuit-breaker on.
☑ All three LEDs glowing or flashing: the startup phase commences.
☑ Green LED is glowing: commissioning successful.
or
☑ Gree n LED will f lash if irradiati on is insuf ficient: grid c onnection conditions have not yet been
reached. Wait for sufficient irradiation.
or
☑ The red or yellow LED is glowing or flashing: there is a disturbance. Proceed to step 3.
A Green LED Operation
B Red LED Earth fault or varistor defective
C Yellow LED Disturbance
Self-test in accordance with CEI 0-21 during initial start-up of SMC 6000A
(applies to Italy only)
The Italian standard CEI 0-21 prescribes that an inverter can only operate on the electricity
grid after the disconnection times for overvoltage, undervoltage, minimum frequency and
maximum frequency have been checked.
Start the self-test as described in Section 6.2 "Only for Italy: Self-Test in Accordance with
CEI 0-21" (page45). The test takes approx. 8 minutes.
3. Read Section 9 "Troubleshooting" (page58) and if necessary, eliminate the fault or
disturbance.
44 SMC46-60A11-IA-en-81 Installation Manual
Page 45
SMA Solar Technology AG Commissioning
6.2 Only for Italy: Self-Test in Accordance with CEI 0-21
6.2.1 Starting the Self-Test
The self-test only applies to inverters of type SMC 6000A-11 which are commissioned in Italy.
The Italian standard requires that all inverters in plants ≤ 6 kW feeding into the electricity grid
perfo rm a self-test in acc ordance wi th CEI 0 -21. Durin g the se lf-test, the inverter will check the reaction
times for overvoltage consecutetively, undervoltage, maximum frequency and minimum frequency.
The self-test changes the upper and lower trip-limit values for each protec tive f unction on a line ar basis
for frequency monitoring and voltage monitoring. As soon as the measured value exceeds the
permitted trip-limit value, the inverter disconnects from the electricity grid. In this way, the inverter
determines the reaction time and checks itself.
After the self-test has been completed, the inverter automatically switches back to the feed-in
operation, resets the original shutdown conditions and connects to the electricity grid.
Requirements:
• Country data set must be configured to CEI0-21 Int / CEI 0-21 intern.
or
• Country data set must be configured to trimmed / Special setting based on
CEI0-21 Int / CEI 0-21 intern.
• A report for entering the test results in compliance with CEI 0-21 must be available.
• The inverter must be in operation and in the start-up phase.
1. As soon as the configured country data set appears in the display, tap once on the display
within ten seconds.
☑ A message informing you that the self-test has started is shown in the display:
Avvio Autotest.
If the information Avvio Autotest is not shown in the display, the period of ten seconds has
expired and the self-test does not start.
– Restart the self-test (see Section 6.2.3).
2. Tap on the display within 20 seconds and enter the test results into the test report as they
appear.
☑ The self-test starts.
☑ The inverter displays the results of the individual tests for overvoltage, undervoltage,
maximum frequency and minimum frequency. The results are displayed three times in
succession for ten seconds each.
Example: Display messages for overvoltage test
• Name of the test: Autotest (59.S1) 240.00V
•Disconnection value: Valore di soglia con 230,00 V
•Normative value: Va. taratura 253.00V
• Disconnection time: Tempo intervento 0.02s
• Current mains voltage: Tensione di rete Val.eff.: 229.80V
Installation Manual SMC46-60A11-IA-en-81 45
Page 46
Commissioning SMA Solar Technology AG
6.2.2 Abortion of the Self-Test
If, during the self-test, an unexpected disconnection requirement occurs, the self-test is aborted.
The same applies if the DC voltage is so low that feed-in cannot be continued.
• A message informing you that the self-test has been aborted is shown in the display for ten
seconds: Autotest interroto.
• Restart the self-test (see Section 6.2.3).
6.2.3 Restarting the Self-Test
1. Disconnect the miniature circuit-breaker and secure against reconnection.
2. Remove the ESS from the inverter for five minutes and then plug it in again firmly.
NOTICE!
Damage to the inverter due to moisture and dust intrusion
If the Electronic Solar Switch is not plugged in or incorrectly plugged in during operation,
moisture and dust can penetrate the inverter.
If the Electronic Solar Switch is not correctly plugged in, this can cause contacts to wear in
the Electronic Solar Switch or the Electronic Solar Switch might fall down. This can result in
yield loss and damage to the Electronic Solar Switch.
Always plug in the Electronic Solar Switch as described in the following:
• Do not tighten the screw in the Electronic Solar Switch.
• Firmly plug in the Electronic Solar Switch until it is flush with the enclosure.
• Ensure that the maximum distance between the Electronic Solar Switch and the
enclosure is 1 mm.
3. Restart the inverter
☑ The inverter is once again in the start-up phase and you can start the self-test
(see Section 6.2.1).
46 SMC46-60A11-IA-en-81 Installation Manual
Page 47
SMA Solar Technology AG Commissioning
SMC xxx
Wrxxx
6.3 Display Messages During the Start-up Phase
• After commissioning, the inverter displays the
device type in the start-up phase.
• After five seconds or a further tap on the enclosure
li d, t he firmw are ver sio n of the interna l pr oce sso rs i s
displayed by the inverter.
• After another five seconds or a further tap, the
inverter displays the configured country standard
(example: "VDE-AR-N4105-MP").
Showing display messages again
If you want to view the display messages of the start-up phase again during normal
operation, tap the enclosure lid twice in quick succession.
Installation Manual SMC46-60A11-IA-en-81 47
Page 48
Opening and Closing SMA Solar Technology AG
7 Opening and Closing
7.1 Safety
DANGER!
7.2 Opening the Inverter
Danger to life due to electric shock
Before opening the inverter, observe the following:
• Ensure that no voltage is present on the AC side.
• Ensure that neither voltage nor current is present on the DC side.
NOTICE!
Electrostatic discharge can damage the inverter
The internal components of the inverter can be irreparably damaged by electrostatic
discharge.
• Earth yourself before touching a component part.
1. Disconnect the miniature circuit-breaker and secure against reconnection.
2. Pull the Electronic Solar Switch downward, slightly
towards the wall.
3. Use a current clamp to ensure that no current is
present in all of the DC cables.
☑ If current is present, check the installation.
48 SMC46-60A11-IA-en-81 Installation Manual
Page 49
SMA Solar Technology AG Opening and Closing
4. Release and disconnect all DC connectors. To do
this, insert a flat-blade screwdriver (blade width:
3.5 mm) into one of the side slots and pull the DC
plug connectors straight out. Do NOT PULL ON
THE CABLE.
☑ All DC connectors are now disconnected from
the inverter. The inverter is completely
disconnected from the PV array.
DANGER!
Danger to life due to high voltages in the inverter
The capacitors in the inverter take 5 minutes to discharge.
• Wait 5 minutes before opening the inverter.
5. Ensu re t hat n o vo lta ge i s pr ese nt a t th e DC plu gs o n
the inverter.
☑If voltage is present, check the installation.
Installation Manual SMC46-60A11-IA-en-81 49
Page 50
Opening and Closing SMA Solar Technology AG
6. Loosen all 6 screws of the enclosure lid and remove
the enclosure lid from the front.
7. Verify the absence of voltage between L to N at the
AC terminal using a suitable measuring device.
☑If voltage is present, check the installation.
8. Verify that no voltage is present between L and PE
at the AC terminal using a suitable measuring
device.
☑If voltage is present, check the installation.
☑ The inverter is open and no voltage is present.
50 SMC46-60A11-IA-en-81 Installation Manual
Page 51
SMA Solar Technology AG Opening and Closing
7.3 Closing the Inverter
1. Screw the enclosure lid on using the six screws and
the corresponding conical spring washers.
Tighten the screws with 6 Nm torque in the order
shown in the figure on the right. The toothing of the
conical spring washers must be facing the
enclosure lid.
The scope of delivery of the inverter includes a
spare screw and conical spring washer.
DANGER!
Danger to life due to enclosure lid carrying voltage
The earthing of the enclosure lid is ensured by the conical spring washers.
• Attach the conical spring washers for all six screws with the toothing facing towards
the enclosure lid.
2. Check the DC connectors for correct polarity and plug them in.
To release the DC connectors see Section 7.2 "Opening the Inverter" (page48).
3. Close all the DC inputs that are not needed as described in Section 5.4.4 "Connecting the PV
Array (DC)" (page31) to seal the inverter.
Installation Manual SMC46-60A11-IA-en-81 51
Page 52
Opening and Closing SMA Solar Technology AG
4. Check the Electronic Solar Switch for wear as
described in Section 8.3 and attach it firmly.
NOTICE!
Damage to the inverter due to moisture and dust intrusion
If the Electronic Solar Switch is not plugged in or incorrectly plugged in during operation,
moisture and dust can penetrate the inverter.
If the Electronic Solar Switch is not correctly plugged in, this can cause contacts to wear in
the Electronic Solar Switch or the Electronic Solar Switch might fall down. This can result in
yield loss and damage to the Electronic Solar Switch.
Always plug in the Electronic Solar Switch as described in the following:
• Do not tighten the screw in the Electronic Solar Switch.
• Firmly plug in the Electronic Solar Switch until it is flush with the enclosure.
• Ensure that the maximum distance between the Electronic Solar Switch and the
enclosure is 1 mm.
5. Switch the miniature circuit-breaker on.
6. Check whether the display and the LEDs indicate a
normal operating state (see Section 6
"Commissioning" (page44)).
☑ The inverter is now closed and in operation.
52 SMC46-60A11-IA-en-81 Installation Manual
Page 53
SMA Solar Technology AG Maintenance and Cleaning
8 Maintenance and Cleaning
8.1 Cleaning the Inverter
If the inverter is dirty and it is difficult to read the operating data and operating states of the inverter,
clean the enclosure lid, the display and the LEDs using a damp cloth. Do not use any corrosive
substances (e.g. solvents or abrasives) for cleaning.
8.2 Checking Heat Dissipation
8.2.1 Cleaning the Fans
If the fan guards are soiled with loose dust, they can be cleaned using a vacuum cleaner. If you do
not achieve satisfactory results with a vacuum cleaner, dismantle the fans for cleaning.
Procedure
1. Disconnect the inverter from both the DC and AC sides as described in Section 7.2 "Opening
the Inverter" (page48).
2. Wait for the fans to stop rotating.
Cleaning the fan guards
3. Remove the fan guards:
– Use a screwdriver to press both latches at the
right edge of the fan guard to the right and
dislodge it from the retainer.
– Carefully remove the fan guard.
4. Clean the fan guard using a soft brush, a paint brush, a cloth or compressed air.
Installation Manual SMC46-60A11-IA-en-81 53
Page 54
Maintenance and Cleaning SMA Solar Technology AG
Cleaning the Fans
5. Press the front latches backward and the rear latch
forward.
6. Remove the fan by pulling it slowly and carefully downwards.
7. Unlock and remove the plug.
The fan cables are long enough for you to lift the fans far enough out to disconnect the plug
inside the inverter.
8. Remove the fan.
9. Clean the fan using a soft brush, a paint brush, or a damp cloth.
NOTICE!
Damage to the fan through use of compressed air
• Do not use compressed air to clean the fan. This could damage the fan.
10. After cleaning, reassemble everything in reverse order.
☑ The fans are cleaned.
11. Check the function of the fan as described in the following section.
54 SMC46-60A11-IA-en-81 Installation Manual
Page 55
SMA Solar Technology AG Maintenance and Cleaning
8.2.2 Checking the Fans
There are two ways to check that the fans are working:
• Set the "Fan Test" parameter to "1" in the installer mode using Sunny Data Control,
Sunny Explorer or Sunny WebBox.
or
• Plug the provided jumper into the system control board.
Setting Parameters
1. Request the installer password from the SMA Service Line (contact: see Page 80).
2. Set the "Fan-Test" parameter to "1" in the installer mode.
3. Check the air flow of the fans.
The inverter draws air in from underneath and then blows it back out on either side at the top.
Listen for any unusual noise, which could indicate incorrect installation or a fault in the fans.
4. After checking the fans, set the "Fan-Test" parameter back to "0".
☑ The fan test is now complete.
Plugging the Jumper
The inverter recognizes the jumper only after a system restart (i.e. all LEDs must have gone out prior
to restart).
1. Open the inverter as described in Section 7.2 "Opening the Inverter" (page48).
2. Plug the provided jumper in the slot on the system control board as shown below.
3. Close the inverter as described in Section 7.3 "Closing the Inverter" (page51).
4. Check the air flow of the fans.
The inverter draws air in from underneath and then blows it back out on either side at the top.
Listen for any unusual noise, which could indicate incorrect installation or a fault in the fans.
5. After checking the fans, remove the jumper. Open and close the inverter as described in
Section 7 "Opening and Closing" (page48).
☑ The fan test is now complete.
Installation Manual SMC46-60A11-IA-en-81 55
Page 56
Maintenance and Cleaning SMA Solar Technology AG
8.2.3 Cleaning the Ventilation Grids
The inverter takes cooling air in from underneath via the fans and blows it out again through the
ventilation grid on the upper sides. Clean the ventilation grids if they are dirty.
Procedure
1. Remove the ventilation grids.
To do this, insert your finger into the top of the
space between ventilation grid and enclosure and
remove the ventilation grid laterally.
2. Clean the ventilation grids using a soft brush, a
paint brush, or compressed air.
3. Re-attach the ventilation grids to the inverter.
The ventilation grids must be attached in
accordance with the inside inscription ("links/left"
and "rechts/right").
NOTICE!
Risk of damage to the inverter through intrusion of insects
• The ventilation grids must not be removed permanently, as otherwise the device will
not be protected against the intrusion of insects.
56 SMC46-60A11-IA-en-81 Installation Manual
Page 57
SMA Solar Technology AG Maintenance and Cleaning
A
B
A
B
8.3 Checking the Electronic Solar Switch (ESS) for Wear
Check the Electronic Solar Switch for wear before plugging it in. Depending on the shape of the
Electronic Solar Switch, you can estimate the wear on either the metal tongues (shape A) or on the
plastic (shape B).
Result Measure
☑ The metal tongues in the Electronic Solar
Sw itc h ar e und ama ged and not disc olou red
(A).
or
☑ The plastic in the Electronic Solar Switch is
undamaged (B).
1. Securely attach the Electronic Solar Switch
handle.
2. Commission the inverter as described in
Section 6 "Commissioning" (page44).
☑ The metal tongues in the Electronic Solar
Switch have a brown discolouration or are
burned through (A).
Th e El ectroni c So lar Swi tch can no l onger re liably
disconnect the DC side.
1. Replace the Electronic Solar Switch handle
before re-attaching (for the order number
see Section 12 "Accessories" (page79)).
2. Recommission the inverter as described in
Section 6 "Commissioning" (page44).
or
☑The plastic in the Electronic Solar Switch
shows thermal deformation (B).
Installation Manual SMC46-60A11-IA-en-81 57
Page 58
Troubleshooting SMA Solar Technology AG
9 Troubleshooting
If the inver ter displays bl ink co des or erro r messages which differ from those described below, contact
the SMA Service Line.
You will find a description of display messages during operation, status messages and measurement
channels in the user manual provided.
Do not perform any repairs that are not described here and take advantage of the 24-hour
replacement service (inverter ready for shipping and handed over to a freight-forwarding company
within 24 hours) and the SMA Solar Technology AG repair service instead.
9.1 Blink Codes
Green Red Yellow Status
Flashing flashing flashing OK (start-up phase)
Permanently glowing is not glowing is not glowing OK (feed-in operation)
permanently glowing is not glowing Earth fault or varistor
defective
permanently glowing OK (initialisation)
Is flashing quickly
(3 x per second)
Is flashing slowly
(1 x per second)
Goes out briefly
(approx. 1 x per
second)
Is not glowing is not glowing is not glowing OK (night-time
is not glowing is not glowing OK (stop)
permanently glowing is not glowing Earth fault or varistor
defective
is not glowing is not glowing OK (waiting, grid
monitoring)
permanently glowing is not glowing Earth fault or varistor
defective
is not glowing is not glowing OK (derating)
deactivation or
Electronic Solar Switch
not connected)
is glowing / flashing Disturbance
permanently glowing is not glowing Earth fault or varistor
defective
is glowing / flashing Earth fault or varistor
defective and
disturbance
58 SMC46-60A11-IA-en-81 Installation Manual
Page 59
SMA Solar Technology AG Troubleshooting
9.2 Error Messages
If a disturbance occurs, the inverter generates a message which depends on the operating mode and
the type of the disturbance detected.
Message Description and corrective measure
!PV-Overvoltage!
!DISCONNECT DC!
ACVtgRPro The 10-minute average mains voltage is no longer within the permissible
Bfr-Srr Internal measurement comparison fault or hardware defect.
Overvoltage at the DC input.
Overvoltage can destroy the inverter.
Corrective measures
Immediately disconnect the inverter from the electricity grid.
1. Disconnect the miniature circuit-breaker.
2. Remove the Electronic Solar Switch.
3. Remove all DC connectors.
4. Check the DC voltage:
– If the DC voltage is above the maximum input voltage, check the
PV plant design or contact the PV array installer.
– If the DC voltage is below the maximum input voltage,
reconnect the inverter to the PV array as described in
Section 5.4.4 "Connecting the PV Array (DC)" (page31).
If the message occurs again, disconnect the inverter again and contact
the SMA Service Line (see Section 13 "Contact" (page80)).
range. This can be caused by one of the following:
• The mains voltage at the termination point is too high.
• The grid impedance at the termination point is too high.
The inverter disconnects from the grid to maintain power quality.
Corrective measures
Check the mains voltage at the termination point of the inverter:
• If, due to the local grid conditions, the mains voltage is 253 V or
more, ask the network operator whether the voltage at the feed-in
po int ca n be adjuste d, or wh eth er t hey woul d agree t o an alte ration
of the limiting value of parameter "ACVtgRPro" for power quality
monitoring.
• If the mains voltage is continually within the tolerance range and
this error message is still displayed, contact the SMA Service Line.
Corrective measures
• Contact the SMA Service Line if this disturbance occurs frequently.
Installation Manual SMC46-60A11-IA-en-81 59
Page 60
Troubleshooting SMA Solar Technology AG
Message Description and corrective measure
Derating The "Derating" operating state is a normal operating state which may
occur occasionally and can have several causes.
Once the inverter enters the "Derating" operating state, it will display the
"Derating" warning until the next complete disconnection of the device
(at the end of the day).
Corrective measures
• Check the heat dissipation as described in Section 8.2 "Checking
Heat Dissipation" (page53).
EEPROM Transition disturbance while data is being written or read from EEPROM.
The data is not relevant for safe operation.
• This disturbance has no effect on the performance of the inverter.
EEPROM dBh EEPROM data is defective, the inverter has switched off because the loss
of data has disabled important functions of the inverter.
Corrective measures
• Contact SMA Service Line.
EeRestore One of the duplicate records in the EEPROM is defective and has been
reconstructed without loss of data.
• This error message only serves to inform you and has no effect on
the performance of the inverter.
Fac-Bfr
Fac-Srr
FacFast
The mains frequency is no longer within the permissible range
("Bfr"/"Srr"/"Fast" is an internal message that has no meaning for the
user). The inverter disconnects from the electricity grid for safety reasons.
Corrective measures
• Check the grid connection and contact the network operator if
necessary.
• If the mains frequency is within the tolerable range, but "Fac-Bfr",
"Fac-Srr"or "FacFast" faults are still displayed, contact the
SMA Service Line.
K1-Close
K1-Open
Error during relay test.
Corrective measures
• Contact the SMA Service Line if this disturbance occurs frequently
or several times in a row.
Imax Overc urrent on t he AC s ide. This message is di splaye d if th e current in the
AC electricity grid is higher than specified.
Corrective measures
• Check the plant design and grid conditions.
60 SMC46-60A11-IA-en-81 Installation Manual
Page 61
SMA Solar Technology AG Troubleshooting
Message Description and corrective measure
MSD-Fac Internal measurement comparison fault or hardware defect.
Corrective measures
• Contact the SMA Service Line if this disturbance occurs frequently.
MSD-Vac Internal measurement comparison fault or hardware defect.
Corrective measures
• Contact the SMA Service Line if this disturbance occurs frequently.
MSD-Timeout Internal measurement comparison fault or hardware defect.
Corrective measures
• Contact the SMA Service Line if this disturbance occurs frequently.
Offset The "offset" operating state is a normal operating state that occurs prior
to grid monitoring. If "offset" is displayed as an error, there is a
disturbance in the recording of measured values.
Corrective measures
• Contact the SMA Service Line if this disturbance occurs frequently.
PowerBalance The Sunny Mini Central is part of a three-phase system with two further
Sunny Mini Central inverters equipped with the SMA Power Balancer for
preventing unbalanced loads. The operating parameter "PowerBalancer"
has been set to "PhaseGuard" or "FaultGuard".
Corrective measures
• For detailed descriptions of the operation modes "PhaseGuard"
an d "F aultGua rd" , re fer to Se cti on 5.5 "C onn ecting t he SMA Po wer
Balancer" (page34).
Riso The electrical insulation between the PV plant and earth is defective.
The electrical resistance between the DC positive and/or DC negative
terminal and earth is outside the defined limit range.
Corrective measures
• Check the insulation of the PV plant.
• Check the PV plant for earth faults as described in Section 9.3.1
"Checking the PV Array for Earth Faults" (page64).
ROM The inverter firmware is faulty.
Corrective measures
• Contact the SMA Service Line if this disturbance occurs frequently.
Trafo-Temp-F Temperatures in the transformer have exceeded the acceptable limit. The
inverter stops feeding in until the temperature reverts to within the
acceptable range.
Corrective measures
• If this disturbance occurs frequently, check the heat dissipation.
Installation Manual SMC46-60A11-IA-en-81 61
Page 62
Troubleshooting SMA Solar Technology AG
Message Description and corrective measure
Trafo-Temp-W If the transformer temperature has risen above the acceptable level, the
inverter stops feeding in until the temperature has reverted to an
acceptable level and the feed-in operation can be resumed. The
"Trafo-Temp-W" warning is displayed until the device is completely
disconnected.
Corrective measures
• Check the heat dissipation of the inverter.
Shutdown Temporary inverter disturbance.
Corrective measures
• Contact SMA Service Line.
Vac-Bfr
Vac-Srr
The mains voltage is no longer within the permissible range ("Bfr" or "Srr"
is an internal message of no relevance for the user). This disturbance can
be caused by any of the following conditions:
• electricity grid disconnected (miniature circuit-breaker, fuse),
• AC cable is interrupted or
• AC cable is highly resistive.
The inverter disconnects from the electricity grid for safety reasons.
Corrective measures
• Check the mains voltage and grid connection on the inverter.
• If the mains voltage lies outside the acceptable range because of
local grid conditions, ask the network operator if the voltages can
be adjusted at the feed-in point or if they agree to changes in the
values of the monitored operating limits (operating parameters:
Vac-Min and Vac-Max).
• If the mains voltage lies within the tolerance range, yet "Vac-Bfr" or
"Vac-Srr" faults are still displayed, contact the SMA Service Line.
62 SMC46-60A11-IA-en-81 Installation Manual
Page 63
SMA Solar Technology AG Troubleshooting
Message Description and corrective measure
VpvMax Overvoltage at the DC input. The inverter may be damaged.
Corrective measures
Immediately disconnect the inverter from the electricity grid.
1. Disconnect the miniature circuit-breaker.
2. Remove the Electronic Solar Switch.
3. Remove all DC connectors.
4. Check the DC voltage:
– If the DC voltage is above the maximum input voltage, check the
PV plant design or contact the PV array installer.
– If the DC voltage is below the maximum input voltage,
reconnect the inverter to the PV array as described in
Section 5.4.4 "Connecting the PV Array (DC)" (page31).
If the message occurs again, disconnect the inverter again and contact
the SMA Service Line (see Section 13 "Contact" (page80)).
Watchdog
Watchdog Srr
Internal program run disturbance.
Corrective measures
• Contact the SMA Service Line if this disturbance occurs frequently.
9.3 Red LED is Permanently Glowing
If the red status display LED is permanently glowing during operation, there is an earth fault in the PV
array or at least one of the varistors for overvoltage protection is defective.
Procedure
1. Check for earth faults in the PV array as described in Section 9.3.1 "Checking the PV Array for
Earth Faults" (page64).
2. If the red LED continues to be glowing, check the varistors as described in Section 9.3.2
"Checking the Function of the Varistors" (page66).
Installation Manual SMC46-60A11-IA-en-81 63
Page 64
Troubleshooting SMA Solar Technology AG
9.3.1 Checking the PV Array for Earth Faults
1. Disconnect the inverter from both the DC and AC sides as described in Section 7.2 "Opening
the Inverter" (page48).
DANGER!
Danger to life due to electric shock
• Only touch the insulation of the PV array cables.
• Do not connect strings with earth faults to the inverter.
NOTICE!
Excessive voltages can destroy the multimeter
• Only use multimeters with a DC input voltage range of up to at least 1,000 V.
2. Measure the voltages between the positive pole of
each string and the earth potential (PE).
3. Measure the voltages between the negative pole of
each string and the earth potential (PE).
4. Measure the voltages between the positive and
negative poles of each string.
☑ An earth fault is present if the measured voltages are stable and the sum of the voltages of
the positive pole against earth potential and the negative pole against earth potential of a
string is approximately equal to the voltage between the positive and negative poles.
64 SMC46-60A11-IA-en-81 Installation Manual
Page 65
SMA Solar Technology AG Troubleshooting
Result Measure
☑ You have detected an earth fault. • The installer of the PV array must remedy
the earth fault in the affected string. You can
determine the location of the earth fault as
described below.
• Do not reconnect the faulty string.
• Close and commission the inverter as
described in Section 7.3 "Closing the
Inverter" (page51).
☑You have not detected any earth fault. It is likely that one of the thermally monitored
varistors is defective.
• Check the varistors as described in
Section 9.3.2 "Checking the Function of the
Varistors" (page66).
Location of the Earth Fault
The approximate position of the earth fault can be determined from the ratio of the measured
voltages between the positive pole against earth potential (PE) and the negative pole against
earth potential (PE).
Example:
In this case, the earth fault is between the second and third PV modules.
☑ The earth fault check is now complete.
Installation Manual SMC46-60A11-IA-en-81 65
Page 66
Troubleshooting SMA Solar Technology AG
9.3.2 Checking the Function of the Varistors
Varistors are wear parts, whose functional efficiency diminishes with age or following repeated
responses as a result of overvoltages. It is therefore possible that one of the thermally monitored
varistors has lost its protective function, and thus the red LED is glowing.
Position of the varistors
You can determine the position of the varistors using the illustration below.
Note the following assignment of the
terminals:
• Terminal A: outer terminal
(varistor connection with loop)
• Terminal B: middle terminal
• Terminal C: outer terminal
(varistor connection without loop)
Check the function of the varistors as described below:
1. Open the inverter as described in Section 7.2 "Opening the Inverter" (page48).
2. With the aid of a multimeter, determine for both
varistors in the installed state whether a conductive
connection exists between connectors B and C.
Result Measure
☑There is a conductive connection: Presumably there is a different error in the inverter.
• Contact the SMA Service Line
(see Section 13 "Contact" (page80)).
66 SMC46-60A11-IA-en-81 Installation Manual
Page 67
SMA Solar Technology AG Troubleshooting
Result Measure
☑There is no conductive
connection:
The respective varistor is defective and must be replaced.
Varistor failure is generally due to influences that affect
all varistors in a similar manner (temperature, age,
induced overvoltage). SMA Solar Technology AG
recommends that you replace both varistors.
The varistors are specially manufactured for use in the
inverter and are not commercially available. They must
be ordered directly from SMA Solar Technology AG
(see Section 12 "Accessories" (page79)).
• To replace the varistors, proceed to step 3.
NOTICE!
Destruction of the inverter due to overvoltage
If varistors are missing, the inverter is no longer protected against overvoltages.
• Replacement varistors should be obtained as soon as possible.
• Do not operate the inverter without varistors in PV plants with a high risk of
overvoltages.
3. Insert the insertion tool into the openings of the
terminal contacts (1).
☑ This releases the terminals.
If you have not received an insertion tool for
operating the terminals with the replacement
varistors, contact SMA Solar Technology AG.
As an alternative, the individual terminal contacts
can be operated using a screwdriver
(blade width 3.5 mm).
4. Remove the varistor (2).
5. Insert the new varistor (3).
The pole with the small loop (crimp) must be fitted
to terminal A when replacing the varistor.
6. Close the inverter as described in Section 7.3
"Closing the Inverter" (page51).
☑ The testing and replacement of the varistors is completed.
Installation Manual SMC46-60A11-IA-en-81 67
Page 68
Decommissioning SMA Solar Technology AG
10 Decommissioning
10.1 Dismounting the Inverter
1. Open the inverter as described in Section 7.2 "Opening the Inverter" (page48).
2. Remove all cables from the inverter.
3. Close the inverter using the six screws and the
corresponding conical spring washers.
4. Remove the ventilation grids from both sides.
5. Remove the two screws on the left- and right-hand
sides of the inverter that attach it to the wall
mounting bracket.
6. Disconnect the anti-theft protection if applicable.
68 SMC46-60A11-IA-en-81 Installation Manual
Page 69
SMA Solar Technology AG Decommissioning
7. Remove the inverter by lifting it up and out of the
wall mounting bracket.
8. Use the side handles (above and below) or a steel
rod (maximum diameter 30 mm) to transport the
inverter. The rod must be pushed through the
enclosure openings.
☑ The inverter is dismounted.
10.2 Packing the Inverter
If possible, always pack the inverter in its original packaging. If this is no longer available, you can
also use an equivalent carton. The carton must be completely closeable, have a handle system and
be designed to support both the weight and size of the inverter.
10.3 Storing the Inverter
Store the inverter in a dry place where ambient temperatures are always between −25°C and +60°C.
10.4 Disposing of the Inverter
Dispose of the inverter at the end of its service life in accordance with the current locally applicable
disposal regulations for electronic waste. Alternatively, send it back to SMA Solar Technology AG
with shipping paid by sender, and labelled "FOR DISPOSAL" ("ZUR ENTSORGUNG")
(contact see Page 80).
Installation Manual SMC46-60A11-IA-en-81 69
Page 70
Technical Data SMA Solar Technology AG
11 Technical Data
11.1 DC/AC
11.1.1 Sunny Mini Central 4600A
DC input
Maximum DC power at cos φ = 1 5,250 W
Maximum input voltage* 600 V
MPP voltage range 246 V ... 480 V
Rated input voltage 246 V
Minimum input voltage 211 V
Start input voltage 300 V
Maximum input current 26 A
Maximum input current per string 26 A
Number of independent MPP inputs 1
Strings per MPP input 4
* The maximum open-circuit voltage that can occur at − 10°C cell temperature must not exceed the maximum input voltage
70 SMC46-60A11-IA-en-81 Installation Manual
Page 71
SMA Solar Technology AG Technical Data
AC Output
Rated power at 230 V, 50 Hz 4,600 W
Maximum apparent AC power* 5,000 VA
Rated grid voltage 230 V
AC nominal voltage 220 V / 230 V / 240 V
AC voltage range 160 V ... 265 V
Nominal AC current at 220 V 20.9 A
Nominal AC current at 230 V 20.0 A
Nominal AC current at 240 V 19.16 A
Maximum output current 26 A
Total harmonic factor of the output current with
≤3%
AC voltage < 2% and
AC power > 50% of the rated power
Rated mains frequency 50 Hz
AC mains frequency 50 Hz/60 Hz
Operating range at AC mains frequency of
44 Hz … 55 Hz
50 Hz
Operating range at AC mains frequency of
54 Hz … 65 Hz
60 Hz
Displacement power factor, adjustable** 0.8
overexcited
… 0.8
underexcited
Power factor at nominal AC power*** 1
Feed-in phases 1
Connection phases 1
Overvoltage category according to
III
IEC 60664-1
* 4,600 VA with VDE-AR-N-4105
** Applies to SMC 4600A-11
*** Applies to SMC 4600A
Efficiency
Maximum efficiency, η
European weighted efficiency, η
Installation Manual SMC46-60A11-IA-en-81 71
max
EU
96.1%
95.3%
Page 72
Technical Data SMA Solar Technology AG
11.1.2 Sunny Mini Central 5000A
DC input
Maximum DC power at cos φ = 1 5,750 W
Maximum input voltage* 600 V
MPP voltage range 246 V ... 480 V
Rated input voltage 246 V
Minimum input voltage 211 V
Start input voltage 300 V
Maximum input current 26 A
Maximum input current per string 26 A
Number of independent MPP inputs 1
Strings per MPP input 4
* The maximum open-circuit voltage that can occur at a cell temperature of − 10°C must not exceed the maximum input voltage.
72 SMC46-60A11-IA-en-81 Installation Manual
Page 73
SMA Solar Technology AG Technical Data
AC Output
Rated power at 230 V, 50 Hz 5,000 W
Maximum apparent AC power 5,500 VA
Rated grid voltage 230 V
AC nominal voltage 220 V / 230 V / 240 V
AC voltage range 160 V ... 265 V
Nominal AC current at 220 V 22.7 A
Nominal AC current at 230 V 21.7 A
Nominal AC current at 240 V 20.8 A
Maximum output current 26 A
Total harmonic factor of the output current with
≤3%
AC voltage < 2% and
AC power > 50% of the rated power
Rated mains frequency 50 Hz
AC mains frequency 50 Hz/60 Hz
Operating range at AC mains frequency of
44 Hz … 55 Hz
50 Hz
Operating range at AC mains frequency of
54 Hz … 65 Hz
60 Hz
Displacement power factor, adjustable* 0.8
overexcited
… 0.8
underexcited
Power factor at nominal AC power** 1
Feed-in phases 1
Connection phases 1
Overvoltage category according to
III
IEC 60664-1
* Applies to SMC 5000A-11
** Applies to SMC 5000A
Efficiency
Maximum efficiency, η
European weighted efficiency, η
Installation Manual SMC46-60A11-IA-en-81 73
max
EU
96.1%
95.3%
Page 74
Technical Data SMA Solar Technology AG
11.1.3 Sunny Mini Central 6000A
DC input
Maximum DC power at cos φ = 1 6,300 W
Maximum input voltage* 600 V
MPP voltage range 246 V ... 480 V
Rated input voltage 246 V
Minimum input voltage 211 V
Start input voltage 300 V
Maximum input current 26 A
Maximum input current per string 26 A
Number of independent MPP inputs 1
Strings per MPP input 4
* The maximum open-circuit voltage that can occur with − 10°C cell temperature must not exceed the maximum input voltage.
74 SMC46-60A11-IA-en-81 Installation Manual
Page 75
SMA Solar Technology AG Technical Data
AC Output
Rated power at 230 V, 50 Hz 6,000 W
Maximum apparent AC power 6,000 VA
Rated grid voltage 230 V
AC nominal voltage 220 V / 230 V / 240 V
AC voltage range 160 V ... 265 V
Nominal AC current at 230 V 26 A
Nominal AC current at 240 V 25 A
Maximum output current 26 A
Total harmonic factor of the output current with
≤3%
AC voltage < 2% and
AC power > 50% of the rated power
Rated mains frequency 50 Hz
AC mains frequency 50 Hz/60 Hz
Operating range at AC mains frequency of
44 Hz … 55 Hz
50 Hz
Operating range at AC mains frequency of
54 Hz … 65 Hz
60 Hz
Displacement power factor, adjustable* 0.8
overexcited
… 0.8
underexcited
Power factor at nominal AC power** 1
Feed-in phases 1
Connection phases 1
Overvoltage category according to
III
IEC 60664-1
* Applies to SMC 6000A-11
** Applies to SMC 6000A
Efficiency
Maximum efficiency, η
European weighted efficiency, η
Installation Manual SMC46-60A11-IA-en-81 75
max
EU
96.1%
95.3%
Page 76
Technical Data SMA Solar Technology AG
11.2 General Data
Width x height x depth with
Electronic Solar Switch
Weight 63 kg
Length x width x height of packaging 396 mm x 803 mm x 596 mm
Transport weight 68 kg
Climatic class as per IEC 60721-2-1 4K4H
Operating temperature range − 25°C ... +60°C
Maximum permissible value for relative humidity,
non-condensing
Maximum operating altitude above MSL 2,000 m
Noise emission (typical) ≤ 42 dB(A)
Power loss in night operation 0.25 W
Topology LF transformer
Cooling concept OptiCool
Fan connection designed as safe disconnection in accordance
Degree of protection for electronics according to
IEC 60529
Protection class according to IEC 62103 I
468mmx613mmx242mm
100%
with DIN EN 50178:1998-04
IP65
11.3 Protective Devices
DC reverse polarity protection short-circuit diode
Input-side disconnection device Electronic Solar Switch
DC overvoltage protection thermally monitored varistors
AC short-circuit current capability current control
Grid monitoring SMA Grid Guard 2.1
Maximum permissible fuse protection 40 A
Earth fault monitoring Insulation monitoring: R
Galvanic isolation available
> 1 MΩ
iso
76 SMC46-60A11-IA-en-81 Installation Manual
Page 77
SMA Solar Technology AG Technical Data
11.4 Approvals
Country standard,
as of 07/2012
SMC 4600A-11
SMC 5000A-11
SMC 6000A-11
SMC 4600A
SMC 5000A
SMC 6000A
VDE0126-1-1 ✓ ✓ ✓ ✓ ✓ ✓
VDE-AR-N-4105 ✓ ✓ ✓ ‒ ‒ ‒
AS 4777 ○ ○ ○ ‒ ✓ ✓
C10/11 ✓ ✓ ✓ ‒ ‒ ‒
PPDS ✓✓✓✓✓✓
GBT19939-2005 ✓ ✓ ✓ ✓ ✓ ✓
VDE0126-1-1/
✓✓✓✓✓✓
UTE C15-712-1
UTE C15-712-1/
✓✓✓✓✓✓
EDF SEI req.
PPC ✓✓✓✓✓✓
SI 4777 ○ ○ ○ ✓ ✓ ✓
CEI0-21 ‒ ‒✓‒ ‒‒
EN 50438* ✓ ✓ ✓ ✓ ✓ ✓
RD 1699 ✓ ✓ ✓ ‒ ‒ ‒
RD 661/2007 ✓ ✓ ✓ ✓ ✓ ✓
IEC 61727 PEA ‒‒‒‒✓✓
G83/1-1 ‒‒‒✓✓✓
G59/2 ✓ ✓ ✓ ‒ ‒ ‒
* EN 50438: not applicable to all deviations from the national standard
○ In planning stage
11.5 Climatic Conditions
According to IEC 60721-3-4, Installation type C, Class 4K4H
Extended temperature range − 25°C ... +60°C
Extended humidity range 0% … 100%
Extended air pressure range 79.5 kPa … 106 kPa
According to IEC 60721-3-4, Transport type E, Class 2K3
Temperature range − 25°C ... +70°C
Installation Manual SMC46-60A11-IA-en-81 77
Page 78
Technical Data SMA Solar Technology AG
11.6 Features
DC connection SUNCLIX DC connector
AC connection Screw terminal
Display LC text display
Bluetooth
RS485, galvanically isolated optional
®
Wireless Technology optional
11.7 Electronic Solar Switch (ESS)
Electrical endurance in the event of short circuit,
at nominal current 35 A
Maximum switching current 35 A
Maximum switching voltage 800 V
Maximum PV power 12 kW
Degree of protection when plugged in IP65
Degree of protection when not plugged in IP21
at least 50 switching processes
11.8 Torques
Enclosure lid screws 6.0 Nm
Additional earth terminal 6.0 Nm
Ch ees e-h ead scre w fo r at tac hin g th e enclos ure to
the wall mounting bracket
SUNCLIX swivel nut 2.0 Nm
Screw terminal AC connection 2.5 Nm
RS485 communication connection 1.5 Nm
6.0 Nm
11.9 Earthing Systems
IT system suitable
TN-C system suitable
TN-S system suitable
TN-C-S system suitable
TT system suitable
Split phase suitable
78 SMC46-60A11-IA-en-81 Installation Manual
Page 79
SMA Solar Technology AG Accessories
12 Accessories
You will find the corresponding accessories and spare parts for your product in the following
overview. If required, you can order these from SMA Solar Technology AG or your specialist dealer.
Description Brief description SMA order number
Bluetooth
Insertion tool for
retrofit kit Bluetooth communication interface BTPBINV-NR
Insertion tool for varistors SB-TVWZ
replacement of varistors
Electronic Solar Switch ESS handle (spare) ESS-HANDLE:04
Also indicate the
inverter serial number.
Negative earthing set Retrofit kit for the negative earthing of the DC
ESHV-N-NR
input
Positive earthing set Retrofit kit for the positive earthing of the DC input ESHV-P-NR
Replacement varistors Set of thermally monitored varistors (2) incl.
SB-TV4
insertion tool
Radio retrofit kit Radio Piggy-Back for retrofitting an inverter for
BEAMPB-NR
communication with Sunny Beam, including
antenna, coaxial cable, and PG cable gland
(metal)
Ventilation grid Ventilation grid set "right and left" as spare parts 45-7202
Power Balancer plug Retrofit kit for retrofitting a Sunny Mini Central
PBL-SMC-10-NR
equipped with an SMA Power Balancer to the
SMA Power Balancer plug-in system
RS485 retrofit kit RS485 interface 485PB-SMC-NR
SMA Power Balancer
Y-cable
SUNCLIX DC connector Field plug for conductor cross-sections of
Connecting cable (2 x 2 m) for
SMA Power Balancer plug-in system
PBL-YCABLE-10
SUNCLIX-FC6-SET
2.5 mm² … 6 mm²
Installation Manual SMC46-60A11-IA-en-81 79
Page 80
Contact SMA Solar Technology AG
13 Contact
If you have technical problems concerning our products, please contact the SMA Service Line. We
require the following information in order to provide you with the necessary assistance:
• Inverter type
• Inverter serial number
• Type and number of the PV modules connected
• Optional equipment, e.g. communication products
• Blink code or inverter display message
SMA Solar Technology AG
Sonnenallee 1
34266 Niestetal, Germany
www.SMA.de
SMA Service Line
Inverters +49 561 9522 1499
Communication: +49 561 9522 2499
Fax: +49 561 9522 4699
E‑Mail: ServiceLine@SMA.de
80 SMC46-60A11-IA-en-81 Installation Manual
Page 81
Page 82
Page 83
SMA Solar Technology AG Legal Provisions
Legal Provisions
The information contained in this document is the property of SMA Solar Technology AG. Publishing its content, either partially or
in full, requires the written permission of SMA Solar Technology AG. Any internal company copying of the document for the
purposes of evaluating the product or its correct implementation is allowed and does not require permission.
SMA Factory Warranty
The current warranty conditions come enclosed with your device. These are also available online at www.SMA-Solar.com and can
be downloaded and are available on paper from the usual sales channels if required.
Trademarks
All trademarks are recognized even if these are not marked separately. Missing designations do not mean that a product or brand
is not a registered trademark.
The Bluetooth
Solar Technology AG is under licence.
QR Code
SMA Solar Technology AG
Sonnenallee 1
34266 Niestetal
Germany
Tel. +49 561 9522-0
Fax +49 561 9522-100
www.SMA.de
E-Mail: info@SMA.de
© 2004 to 2012 SMA Solar Technology AG. All rights reserved
®
wor d mark an d logos a re registe red trad emarks own ed by Blu etoo th SIG , Inc. an d any use of such mar ks by SMA
®
is a registered trademark of DENSO WAVE INCORPORATED.
Installation Manual SMC46-60A11-IA-en-81 83
Page 84
ZZZ60$6RODUFRP
60$6RODU7HFKQRORJ\
60$6RODU7HFKQRORJ\$*
ZZZ60$GH
60$$XVWUDOLD3W\/WG
ZZZ60$$XVWUDOLDFRPDX
60$%HQHOX[EYEDVSUO
ZZZ60$%HQHOX[FRP
60$%HLMLQJ&RPPHUFLDO&RPSDQ\/WG
ZZZ60$&KLQDFRPFQ
60$&HQWUDO(DVWHUQ(XURSHVUR
ZZZ60$&]HFKFRP
60$)UDQFH6$6
ZZZ60$)UDQFHFRP
60$+HOODV$(
ZZZ60$+HOODVFRP
60$,EpULFD7HFQRORJtD6RODU6/8
ZZZ60$,EHULFDFRP
60$6RODU,QGLD3YW/WG
ZZZ60$,QGLDFRP
60$,WDOLD6UO
ZZZ60$,WDOLDFRP
60$-DSDQ..
ZZZ60$-DSDQFRP
60$7HFKQRORJ\.RUHD&R/WG
ZZZ60$.RUHDFRP
60$0LGGOH(DVW//&
ZZZ60$0HFRP
60$3RUWXJDO1LHVWHWDO6HUYLFHV8QLSHVVRDO/GD
ZZZ60$3RUWXJDOFRP
60$6RODU7KDLODQG&R/WG
ZZZ60$7KDLODQGFRP
60$6RODU8./WG
ZZZ60$8.FRP
Loading...