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EN
PV inverter
SUNNY MINI CENTRAL 7000HV
Installation Manual
SMC70HV11-IA-IEN112970 | IME-SMC70HV | Version 7.0
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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 Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 Intended Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.1 Scope of Delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2 Identifying the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4 Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.1 Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.2 Selecting the Mounting Location. . . . . . . . . . . . . . . . . . . . . . . . 16
4.3 Mounting the Inverter with the Wall Mounting Bracket . . . . . . 18
5 Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.1 Overview of the Connection Area . . . . . . . . . . . . . . . . . . . . . . 21
5.1.1 Exterior View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.1.2 Interior view. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.2 Connection to the Power Distribution Grid (AC). . . . . . . . . . . . 24
5.2.1 Conditions for the AC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.2.2 Connecting the Inverter to the Power Distribution Grid (AC) . . . . . . . . . . . . 26
5.2.3 Additional Grounding of the Enclosure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
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5.3 Setting the Display Language . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.4 Connecting the PV Array (DC) . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.4.1 Conditions for the DC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.4.2 Assembling the DC Plug Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.4.3 Opening the DC Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.4.4 Connecting the PV Array (DC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.5 Connection of the SMA Power Balancer . . . . . . . . . . . . . . . . . 38
5.5.1 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5.5.2 Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
5.5.3 Testing the Functioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
5.6 Communication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
5.7 Setting the Grid and Country Parameters . . . . . . . . . . . . . . . . . 47
5.7.1 Setting the Installation Country . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
5.7.2 Setting Stand-alone Grid Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
5.7.3 Additional Country Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
6 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
6.1 Commissioning the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
6.2 Display Messages During the Startup Phase . . . . . . . . . . . . . . 50
6.3 Self-Test in Accordance with DK 5940, Ed. 2.2
(Applies to Italy Only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
6.3.1 Starting the Self-Test by Tapping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
6.3.2 Completion of the Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
7 Opening and Closing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
7.1 Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
7.2 Opening the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
7.3 Closing the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
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SMA Solar Technology AG Table of Contents
8 Maintenance and Cleaning. . . . . . . . . . . . . . . . . . . . . . . . 61
8.1 Cleaning the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
8.2 Checking Heat Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
8.2.1 Cleaning the fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
8.2.2 Checking the Fans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
8.2.3 Cleaning the Ventilation Grids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
8.3 Checking the Electronic Solar Switch (ESS) for Wear . . . . . . . 65
9 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
9.1 Blink Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
9.2 Fault Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
9.3 Red LED is Glowing Continuously. . . . . . . . . . . . . . . . . . . . . . . 73
9.3.1 Checking the PV Array for Ground Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
9.3.2 Checking the Function of the Varistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
10 Decommissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
10.1 Disassembling the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
10.2 Packing the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
10.3 Storing the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
10.4 Disposing of the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
11 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
12 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
13 Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
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Table of Contents SMA Solar Technology AG
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SMA Solar Technology AG Information on this Manual
1 Information on this Manual
1.1 Validity
This manual describes the mounting, installation, commissioning, maintenance and troubleshooting
procedures for the following SMA inverters:
• Sunny Mini Central 7000HV (SMC 7000HV-11).
Keep this manual in a convenient place for future reference.
1.2 Target Group
This manual is for electrically skilled persons. The tasks described in this manual may only be
performed by electrically skilled persons.
1.3 Additional Information
You will find further information on special topics such as designing a miniature circuit-breaker or the
description of the operating parameters at www.SMA.de/en.
Refer to the user manual provided for detailed information on operating the inverter.
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Information on this Manual SMA Solar Technology AG
1.4 Symbols Used
The following types of safety precautions and general information appear in this document as
described below.
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, could 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 that can result in property damage if not avoided!
Information
Information provides tips that are valuable for the optimal installation and operation
of your product.
☑ This symbol indicates the result of an action.
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SMA Solar Technology AG Security
2 Security
2.1 Intended Use
The Sunny Mini Central is a PV inverter, which converts the direct current of the PV array to
grid-compliant alternating current and feeds it into the power distribution grid.
Operating Principle of a PV Plant with Sunny Mini Central
The Sunny Mini Central is suitable for indoor and outdoor use.
The Sunny Mini Central may only be operated with PV arrays (PV modules and cabling) of protection
class II. The PV modules used have to be suitable for use with the Sunny Mini Central and must be
released by the module manufacturer.
Alternative uses, modifications to the Sunny Mini Central or the installation of components not
expressly recommended or sold by SMA Solar Technology AG are not permitted.
Persons with limited physical or mental abilities may only work with the Sunny Mini Central following
proper instruction and under constant supervision. Children are forbidden to play with the
Sunny Mini Central. Keep the Sunny Mini Central away from children.
Only use the Sunny Mini Central in accordance with the information provided in the enclosed
documentation. Any other use can result in personal injury or property damage.
• 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 areas with a risk of explosion.
The enclosed documentation is a part of this product. Read and follow the documentation for the
proper and optimum use of the Sunny Mini Central. Keep this documentation in a convenient place
for future reference.
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Security SMA Solar Technology AG
2.2 Safety Instructions
Electric Shock
High voltages that can result in electrical shocks are present in the conductive component parts of the
inverter.
• Disconnect the inverter from voltage sources as described in this manual before performing any
work on it (see section 7.2"Opening the Inverter" (page56)).
Burn Hazard
Some parts of the Sunny Island enclosure can become hot during operation.
• Only touch the enclosure lid of the inverter during operation.
Environmental Influences
When closed and with the Electronic Solar Switch attached, the inverter complies with the IP65
degree of protection. The inverter is thus protected against the penetration of dust and water.
The penetration of dust and water can damage the inverter.
• If the Electronic Solar Switch is not attached, the inverter must be protected against dust
and water.
• Securely attach the Electronic Solar Switch again after any work on the inverter.
Electrostatic discharge
Touching electronic components can cause damage to or destroy the inverter through electrostatic
discharge.
• Ground yourself before touching any component parts.
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SMA Solar Technology AG Security
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.
Ground fault or varistor defective.
Read section 9.3"Red LED is Glowing Continuously" (page73).
Fault or disturbance.
Read section 9"Troubleshooting" (page66).
You can operate the display by tapping.
• Tapp ing once: t he bac kground li ght switch es on or the displ ay scrolls
one message further.
• 2 taps in quick succession
from the startup phase again (see section 6.2"Display Messages
During the Startup Phase" (page50)).
DC load disconnection unit Electronic Solar Switch (ESS)
• When the Electronic Solar Switch is plugged in, the DC circuit is
closed.
• To interrupt the DC circuit and disconnect the inverter securely
under load, you have to first pull out the Electronic Solar Switch
and then remove all DC connectors , as described in section
7.2"Opening the Inverter" (page56).
®**
QR-Code
for SMA bonus program
You will find information on the SMA bonus program at
www.SMA-Bonus.com.
*
: The inverter shows the display messages
* This function is valid from firmware version 2.10.
** QR-Code is a registered trademark of DENSO WAVE INCORPORATED.
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Security SMA Solar Technology AG
2.3.2 Symbols on the Type Label
Symbol Explanation
Beware of dangerous electrical voltage.
The inverter operates at high voltages. All work on the inverter may only be
carried out by electrically skilled persons.
Beware of hot surface.
The inverter can become hot during operation. Avoid contact during
operation.
Observe all documentation that accompanies the inverter.
Th e in ver ter must not be d isp ose d of tog eth er w ith the h ous eho ld waste. For
more information on disposal, see section 10.4"Disposing of the Inverter"
(page79).
CE mark.
The inverter complies with the requirements of the applicable
EC guidelines.
The inverter has a transformer.
Direct current (DC)
Alternating current (AC)
Degree of protection IP65.
The inverter is protected against penetration by dust particles 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 Labeling.
In compliance with Australian mark
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SMA Solar Technology AG Security
Symbol Explanation
Chinese mark of conformity
In compliance with Korean mark
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Unpacking SMA Solar Technology AG
3 Unpacking
3.1 Scope of Delivery
Check the delivery for completeness and for any visible external damage. Contact your dealer if
anything is damaged or missing.
Position Quantity Description
A 1Sunny Mini Central
B 1 Ventilation grids (right/left)
C 1 Wall mounting bracket
D 1 DC load disconnection unit Electronic Solar Switch (ESS)
E 8 DC plug connectors (4 x positive, 4 x negative)
F 8 Sealing plugs for DC connectors
G 1 Cable gland for AC connection
H 1 Counter nut for cable gland at AC connection
I 1 Clamping clip for additional grounding
K 2 Conical spring washers:
1 x for cover screws (replacement), 1 x for ground terminal
L 2 Cylinder head screws (M6 x 16):
1 x for enclosure lid (replacement), 1 x for ground terminal
M 2 Jumper (1 x for fan test, 1 x for the SMA Power Balancer wiring)
N 2 Cylinder head screws (M6 x 8) 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
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SMA Solar Technology AG Unpacking
Position Quantity Description
Q 1 User manual
R 1Set of documents with explanations and certificates
S 1 Supplementary sheet with inverter factory settings
3.2 Identifying the Inverter
You can identify the inverter using the type label. The type label is on the right-hand side of the
enclosure.
The serial number (Serial No.) and the type (Type/Model) of the inverter, as well as device-specific
characteristics are specified on the type label.
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Mounting SMA Solar Technology AG
4 Mounting
4.1 Security
DANGER!
Danger to life due to fire or explosion!
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 areas with a risk of explosion.
CAUTION!
Danger of burn injuries 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. 65 kg into account for mounting.
4.2 Selecting the Mounting Location
Consider the following requirements 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" (page80)).
• Mount on a solid surface.
• The mounting location must at all times be clear and safely accessible without the use of
additional aids such as scaffolding or lifting platforms. Non-fulfillment of these criteria may
restrict servicing.
• Mount vertically or tilted backwards by max. 45°.
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SMA Solar Technology AG Mounting
500 mm
300 mm
300 mm
50 mm
300 mm
• The connection area must point downward.
• Never mount the device with a forward tilt.
• Never install the device with a sideways tilt.
• Do not mount horizontally.
• Mount at eye level to allow operating states to be read at all times.
• The ambient temperature should be below 40°C to ensure optimum operation.
• Do not expose the inverter to direct sunlight as this can cause excessive heating and thus
power reduction.
• In living areas, do not mount the unit on plasterboard walls or similar to avoid audible
vibrations. When in use, the inverter emits noises which may be perceived as a nuisance in a
living area.
• Observe the minimum clearances to walls, other
inverters or objects as shown in the diagram in
order to ensure sufficient heat dissipation and
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 taken in.
If necessary, increase the clearance spaces and make sure there is en ough fr esh air supply
to ensure sufficient cooling of the inverters.
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Mounting SMA Solar Technology AG
4.3 Mounting the Inverter with 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, with one hole on the right and one on the left.
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SMA Solar Technology AG Mounting
CAUTION!
Risk of injury due to the heavy weight of the inverter!
The inverter weights 65 kg.
• Attach the wall mounting bracket with the corresponding mounting material
(depending on the surface).
• U se t he side h and les (ab ove and belo w)
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 opening for this purpose in the rear of the
enclosure.
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Mounting SMA Solar Technology AG
4. Screw the inverter onto the wall mounting bracket
on both sides using the screws (M6x8) provided.
For this purpose, only tighten the screws by hand.
5. Make sure that the inverter is securely seated.
6. Close the recessed grips with the fan grills
provided. To help you identify the sides, the
ventilation grids are marked "rechts/right" and
"links/left" on the inside.
The ventilation grids prevent dirt and insects from
entering the device and, if necessary, can be
reordered from SMA Solar Technology AG
(see section 13"Contact" (page85)).
Optional Theft Protection
To protect the inverter against theft, the rear
panel can be secured to the wall at the bottom
using 2 single-use bolts.
The other two holes are spares.
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SMA Solar Technology AG Electrical Connection
5 Electrical Connection
NOTICE!
Electrostatic discharges can damage the inverter!
Internal component parts of the inverter can be irreparably damaged by static discharge.
• Ground yourself before touching a component.
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 bottom of the
inverter.
Position Description
A DC connectors for connecting the strings
B Socket for connecting the Electronic Solar Switch (ESS)
C Cable glands for optional communication via RS485 or radio (PG16)
D Cable gland for grid connection (AC) (12 mm … 25 mm)
E Cable glands for SMA Power Balancer
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Electrical Connection SMA Solar Technology AG
5.1.2 Interior view
The following figure shows the various components and connection areas of the open inverter.
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SMA Solar Technology AG Electrical Connection
Position Description
A Connection area and slots for communication
B Display
C Jumper slot for the fan test
D LEDs for displaying the operating states
E Jumper slot for SMA Power Balancer
F Connections terminals for SMA Power Balancer
G Flat connector for grounding the cable shield when connecting the
SMA Power Balancer
H Additional connection terminal for grounding
I Cable glands for the SMA Power Balancer
K Connection terminals for mains cable (AC)
L Cable gland for grid cable (AC)
M Cable glands for communication
N Screwing device for shield clamp for communication cable
O DC plug connector
P Connection socket for Electronic Solar Switch (ESS)
Q Varistors
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Electrical Connection SMA Solar Technology AG
5.2 Connection to the Power Distribution Grid (AC)
5.2.1 Conditions for the AC Connection
Connection requirements of the distribution grid operator
Always observe the connection requirements of your distribution grid operator!
Cable design
Use "Sunny Design" version 2.0 or higher for the dimensioning of the conductor cross-sectional areas
(see "Sunny Design" design program at www.SMA.de/en).
Cut line losses in half
If three inverters with symmetrical feeding are combined to form a three-phase system, the
neutral conductor is not subjected to any load, and the line losses are halved. Thus, the
maximum possible cable length is doubled.
Cable Requirements
Position Description Value
A External diameter 12 mm ... 25 mm
B Conductor cross-section 10 mm² … 16 mm²
C Length of insulation to be stripped off approx. 16 mm
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SMA Solar Technology AG Electrical Connection
Load Disconnection Unit
You must install a separate line circuit breaker for each inverter in order to ensure that the inverter
can be securely disconnected under load. The maximum permissible rating can be found in
section 11"Technical Data" (page80).
Detailed information and examples for the rating of a miniature circuit-breaker can be found in the
Technical Information "Line Circuit Breaker" in the SMA Solar Technology AG download area at
www.SMA.de/en.
DANGER!
Danger to life due to fire!
When more than one inverter is connected to the same miniature circuit-breaker, the
protective function of the miniature circuit-breaker is no longer guaranteed. It can result in
a cable fire or destruction of the inverter.
• Never connect several inverters to a single 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 grid can accumulate to over-currents that are not
detected by the miniature circuit-breaker.
• Never connect loads between the
inverter and the miniature circuit-breaker
without protection.
• Always protect consumers separately.
NOTICE!
Damage to the inverter by using screw type fuses as a load disconnection unit!
A screw type fuse, e.g. DIAZED fuse or D0 system (Neozed), is not a load disconnection
device, and thus may not be used as a load disconnection unit. A screw type fuse only acts
as cable protection.
When disconnecting under load using a screw type fuse, the inverter can be damaged.
• Use only a switch-disconnector or a miniature circuit-breaker as a load
disconnection unit.
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Electrical Connection SMA Solar Technology AG
5.2.2 Connecting the Inverter to the Power Distribution Grid (AC)
1. Check the grid voltage and compare with "V
The exact operating range of the inverter is specified in the operation parameters. The
corresponding document can be found in the download area at www.SMA.de/en, in the
"Technical Description" category of the respective inverter.
2. Disconnect the miniature circuit-breaker and secure against re-connection.
3. Remove all lid screws and detach the enclosure lid.
4. R emo ve the adhe sive ta pe fro m the A C cable glan d
(see "D" on Page 21).
5. Insert the AC cable gland from the outside into the
enclosure opening and tighten it from the inside
with the counter nut.
6. Unscrew the cable gland's lock nut and pass it over
the cable.
7. Route the cable through the cable gland to the
AC terminal.
8. Connect L, N and the protective conductor (PE) to
the connecting terminal plate using a screwdriver in
accordance with the label.
To do this, the protective conductor must be 5 mm
longer than the L and N wires.
L and N must not be swapped!
" on the type plate.
AC nom
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9. Tighten the lock nut firmly to the cable gland.
10. Close the cable gland tightly on the enclosure opening.
11. Tighten the enclosure lid with all screws and the
corresponding conical spring washers in the
sequence depicted on the right (torque: 6 Nm).
The toothing of the conical spring washers must
point toward the enclosure lid.
The scope of delivery of the inverter includes
another spare screw and conical spring washer.
DANGER!
Danger to life due to enclosure lid carrying voltage!
The grounding of the enclosure lid is ensured by the conical spring washers.
• Fast en the coni cal spring washers for all 6 screws wi th the toothing facing toward 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 been connected
and the inverter is securely closed.
☑ The inverter is now connected to the power distribution grid (AC).
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5.2.3 Additional Grounding of the Enclosure
If the installation requires, you can use the ground terminal to connect a second protective conductor
or as equipotential bonding.
Procedure
1. Insert the stripped grounding cable (D) under the
clamping clip (C) (max. cross-section 16 mm²).
2. Screw the clamping clip tight with screw (A) and
conical spring washer (B).
The to othing of t he conical spri ng washer m ust face
toward the clamping clip.
☑ The inverter's enclosure is additionally grounded.
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5.3 Setting the Display Language
You can set the language of the display using the switches on the underside of the display board
inside the inverter.
When selecting the display language, different switching settings apply to inverters that are set to the
Italian national standard DK 5940. You can see the standard to which the inverter was set upon
delivery from the type label and the supplementary document provided with the factory settings.
For more information on setting the grid and national parameters, see section 5.7"Setting the Grid
and Country Parameters" (page47).
Procedure
1. Open the inverter as described in section 7.2"Opening the Inverter" (page56).
2. Set the switches to the required language, as
shown below.
The following switch settings, except for DK 5940,
apply to all national standards:
Language Switch S2 Switch S1
German B B
English B A
French A B
Spanish A A
The following switch settings apply to inverters that
are set to the Italian national standard DK 5940:
Language Switch S2 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" (page59).
☑ The display language is set.
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5.4 Connecting the PV Array (DC)
5.4.1 Conditions for the DC Connection
Using Y adapters for parallel connection of strings
Y adapters may not be visible within close proximity of the inverter or freely accessible.
• The DC circuit may not be interrupted by Y adapters.
• Observe the procedure for disconnecting the inverter as described in section
7.2"Opening the Inverter" (page56).
• Requirements for the PV modules of the connected strings:
– Same type
–Same number
– Identical alignment
– Identical tilt
• The connecting cables of the PV modules must be equipped with plug connectors.
The DC connectors for the DC terminal are included in the delivery.
• The following limit values at the DC input of the inverter must not be exceeded:
Maximum input voltage Maximum input current
800 V (DC) 23.0 A (DC)
DANGER!
Risk of lethal electric shock or fire!
The maximum possible input current per string is limited by the plug connectors used. If the
plug connectors are overloaded, an electric arc may occur and there is a risk of fire.
• Ensure that the input current for each string does not exceed the maximum flow
current of the plug connectors used.
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5.4.2 Assembling the DC Plug Connectors
In order to be connected to the inverter, all connection cables of the PV modules must be equipped
with the DC plug connectors provided.
To assemble the DC plug connectors, proceed as follows. Ensure the connectors have the correct
polarity. The DC plug connectors have the symbols "+" and "‒".
Cable requirements:
• Use a PV1-F cable.
Procedure
1. Lead the stripped cable all the way into the
DC connector.
2. Press the clamping clip down.
☑ The clamping clip snaps audibly into place.
3. Ensure the cable is correctly in place:
Result Measure
☑ If the stranded wire is visible in the chamber
of the clamping clip, the cable is correctly
positioned.
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Result Measure
☑ If the stranded wires are not visible, the
cable is not correctly positioned.
• Loosen the clamping clip. To do so, insert a
3.5 mm screwdriver into the terminal clamp
and lever it out.
• Remove the cable and go back to step 1.
4. Push the cable gland towards the thread and tighten it (torque: 2 Nm).
☑ The DC connectors are now assembled and can be connected to the inverters, as described in
section 5.4.4"Connecting the PV Array (DC)" (page34).
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5.4.3 Opening the DC Connector
1. Unscrew the screw connection.
2. Unlocking the DC connector: Insert a 3.5 mm
screwdriver into the snap slot on the side and lever
it out.
3. Carefully pull the DC connector apart.
4. Lo osen th e clam ping cl ip. To do so, insert a 3.5 mm
screwdriver into the terminal clamp and lever it out.
5. Remove the cable.
☑ The cable is now removed from the DC connector.
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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 measuring device!
• Only use measuring devices with a DC input voltage range up to at least 1 000 V.
1. Disconnect the miniature circuit-breaker and secure against re-connection.
2. Pull the Electronic Solar Switch downward, slightly
towards the wall.
3. Check the connection cables 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.
Otherwise, check the system design and the PV
mo dul e co nne cti on. If this i s no t do ne, the max imu m
inverter input voltage can be exceeded at low
ambient temperatures.
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+
1
2
NOTICE!
Destruction of the inverter due to overvoltage!
If the voltage of the PV modules exceeds the maximum input voltage of the inverter, it can
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.
4. Check the strings for ground faults as described in section 9.3.1"Checking the PV Array for
Ground Faults" (page74).
5. Check the assembled DC plug connectors for correct polarity and connect them to the inverter.
☑ The DC connectors click audibly into position.
To unlock the DC connectors, see section 7.2"Opening the Inverter" (page56).
6. In order to seal the inverter, all the DC inputs that are not required have to be closed with DC
plug connectors and sealing plugs:
Sealing plugs
•Do not insert the sealing plugs directly into the DC inputs of the inverter.
– For unused DC connectors, push down the
termi nal clamp a nd push it o nto the cab le gland.
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+
+
– Insert the sealing plug into the DC connector.
– Tighten the DC plug connector (torque: 2 Nm).
– Insert the DC connectors with sealing plugs into
the corresponding DC inputs on the inverter.
☑ The DC connectors click audibly into position.
7. Ensure that all DC plug 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" (page65) and attach
it firmly.
NOTICE!
Manipulating the connector in the handle can damage the
Electronic Solar Switch!
The connector inside the handle must remain movable in order to ensure proper contact.
Tightening the screw voids all warranty claims and creates a fire risk.
•Do not tighten the connector screw in the Electronic Solar Switch handle.
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NOTICE!
Damage to Electronic Solar Switch!
If it is not correctly connected, the Electronic Solar Switch can be damaged by
high voltages.
• Plug the handle firmly onto the socket of the Electronic Solar Switch.
• Ensure that the Electronic Solar Switch is securely seated.
☑ The PV array is now connected.
You can now commission the inverter as described in section 6"Commissioning" (page49).
The following connection options are optional.
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5.5 Connection of the SMA Power Balancer
The Sunny Mini Central is equipped with the SMA Power Balancer as standard. This enables a circuit
connection of 3 Sunny Mini Central inverters to a three-phase feed-in system.
Ea ch o f the 3 Su nny Mini Cen tra l de vic es in a g rou p mu st b e connected to a different phase conductor
of the low-voltage grid (L1, L2 and L3).
By activating this circuit, you can stipulate how the other two Sunny Mini Centrals are to react if there
is a device disturbance with the third Sunny Mini Central or there is a grid voltage fault in its phase.
Three-phase grid connection
For further information on this subject, see the Technical Information
"Three phase connection with Sunny Mini Central" in the download area at
www.SMA.de/en.
The connections for the SMA Power Balancer are galvanically isolated from the rest of the
Sunny Mini Central circuit.
5.5.1 Configuration
The SMA Power Balancer is deactivated at the factory using the "PowerBalancer" parameter
(parameter setting = Off) and can only be activated and 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.de/en, in the "Certificate" category of the respective inverter.
The configuration options are described below.
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Configuration Options
There are 4 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 distribution grid operator!
•FaultGuard
This operating mode allows for the implementation of a three-phase grid voltage monitoring,
which also reacts to device disturbances.
– If one of the 3 inverters indicates a grid voltage fault and stops feeding in, the other two
inverters also disconnect from the power distribution grid immediately.
– If one of the 3 inverters indicates a device fault and stops feeding in, the other two inverters
also disconnect from the power distribution grid 5 minutes later.
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•PhaseGuard
This operating mode allows for the implementation of a three-phase grid voltage monitoring.
– If one of the 3 inverters indicates a grid voltage fault and stops feeding in, the other two
inverters also disconnect from the power distribution 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.
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•Off
The SMA Power Balancer is deactivated (factory setting).
– In the event of a device fault or grid voltage fault at an inverter, only this inverter is
disconnected from the power distribution grid and the other two inverters continue to run at
an undiminished power level.
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•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.
Deviating unbalanced load limit for Italy
The unbalanced load for inverters set to the Italian national standard DK 5940 is limited
to 6 kVA over a 10-minute average.
If one of the 3 inverters indicates a grid voltage fault or device fault and stops feeding in,
the other two inverters automatically limit their power to 4.6 kVA over a 10 minute average.
5.5.2 Cabling
Cable Requirements
For cabling the SMA Power Balancer, use a "LiYCY" cable, structured as shown here:
• Indoor: LiYCY 2 x 2 x 0.25
• Outdoor: Li-2YCYv 2 x 2 x 0.25
Position Description
A Flexible insulation
B Shielding
C Twisted pair 2 (2 x 0.25 mm²)
D Twisted pair 1 (2 x 0.25 mm²)
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Overview of the Connection Area
Position Description
A Screw terminals for the wire bridge
B Screw terminals for connecting the cables
C Jumper slot
D Flat male tab for grounding the cable shield
E Silicone tube/cable route
F Cable glands
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Procedure
1. Open the inverter as described in section 7.2"Opening the Inverter" (page56).
2. Insert the cable into each inverter.
Use one of the two cable glands (F) on the bottom right hand side.
DANGER!
Danger to life through high voltage if there is a fault with the
SMA Power Balancer cable!
• Sheath the positive and negative cable conductors in each inverter using the
enclosed silicone tube.
• Cut the silicone tube to the required length.
• The silicone tube must completely cover the cable inside the inverter enclosure.
3. Draw the cable along the cable route (E) as far as the terminal block (B).
4. Ground the shield in each inverter at the PE terminal (D).
5. Sheath the positive and negative cable conductors in each inverter with wire sleeves.
6. Connect the positive and negative pole to the
corresponding screw terminals.
7. In order to connect the three inverters together, connect the positive and negative conductors
from the two other inverters to the terminal block of the middle inverter.
The cable length between two inverters may not exceed 300 m.
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8. Only in the middle inverter (the one with
2 insulated conductors for each terminal), insert
one of the provided jumpers into the lowest of the
three slots as depicted on the right.
Do not plug the jumpers in the bottom slot of the
two other inverters.
or
Bridge the "A" and "B" screw terminals on the
middle inverter with a wire bridge.
Do not bridge the "A" and "B" screw terminals in
the two other inverters.
9. Measure the resistance between the terminal
block's positive and negative poles in the middle
inverter.
☑ If the resistance is approximately 27.8 k Ω
(±370 Ω ), the SMA Power Balancer has been
connected correctly. Otherwise, check the
cabling.
10. Close all inverters as described in section 7.3"Closing the Inverter" (page59).
Connection with one 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 7000HV must be equipped with a special
plug (Order No. PBL-SMC-10-NR). Three inverters are then connected together with a
special connection cable.
You can order the plug and the connection cable from SMA Solar Technology AG or your
dealer. Section 12"Accessories" (page84) contains a list of the order numbers.
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E-today 0Wh
Mode MPP
Disturbance
PowerBalance
Disturbance
Vac-Bfr
Disturbance
PowerBalance
5.5.3 Testing the Functioning
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 the power distribution grid normally.
☑ Green LED glows continually, or adjacent
display message: Proceed to step 3.
or
☑ If all inverters in this group show the display
message pictured on the right: Check the
installation of the SMA Power Balancer and
contact the SMA Serviceline, if necessary.
3. Switch off the miniature circuit-breaker for one of
the three inverters.
• The inverter with a deactivated miniature circuitbreaker then indicates a grid voltage fault with the
adjacent display message ("Bfr" and "Srr" are
irrelevant).
• The other two inverters then also disconnect
themselves from the power distribution grid with the
display message shown opposite.
• Both inverters subsequently switch to "Balanced"
mode.
☑ If the inverters react as described above, the
functionality test has been completed
successfully. Otherwise, check the
configuration.
4. If applicable, reset the "PowerBalancer" parameter to the desired setting in all inverters.
5. Switch on the miniature circuit-breaker again.
☑The functionality test has been completed.
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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 Explorer).
Refer to the respective communication interface manual for a detailed wiring schematics and an
installation description for the interface.
The inverter's active power 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.de/en.
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.de/en, in the "Certificate" category of the respective
inverter.
Ensure that you discuss the changes to these parameters with your distribution grid
operator.
A detailed description of the operation parameters for the inverter is available in the download area
at www.SMA.de/en in the category "Technical Description" of the respective inverter.
5.7.1 Setting the Installation Country
Using the "Default" parameter, you can set the installation country and/or the grid connection
standard valid for the country via a communication product (e.g., Sunny WebBox) or a PC with
appropriate software (e.g. Sunny Explorer). This, however, is only required if the inverter was
originally ordered for another country. You can see the standard according to which the inverter was
set upon delivery on the type label and the enclosed data sheet with the factory settings.
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5.7.2 Setting 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.
You have several possibilities to set the inverter to stand-alone grid operation:
• Setting via Sunny WebBox
or
• Setting via Sunny Explorer.
DANGER!
Danger to life due to high voltages in the event of outage of the
power distribution grid!
If you set the inverter to stand-alone grid operation, it does not fulfill any country-specific
standards and guidelines. Therefore, in the event of outage of the power distribution grid,
there is a danger of back feed.
• Never operate the inverter directly on the power distribution grid when set to
off-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"
(page47) 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 Sunny Mini Central inverters of type SMC 7000HV-11 have an additional default country
parameter "MVtgDirective". This expands the deactivation limits of the inverter for voltage and
fr equ enc y to a ma xim um/ min imu m. T his cou ntr y se tti ng m ay o nly be selected if the PV plant or inverter
is operated with external three-phase decoupling protection which will automatically disconnect the
Sunny Mini Central from the power distribution grid if non-permissible voltage and frequency values
occur. Device protection is still guaranteed.
DANGER!
Risk of lethal electric shock if external decoupling protection is missing!
If the country setting is "MVtgDirective", the Sunny Mini Central of type SMC 7000HV-11
may only be operated with an external three-phase decoupling protection device which
complies with the country-specific requirements.
Without such external decoupling protection, the Sunny Mini Central will not disconnect
from the power distribution grid when the standard requirement is exceeded.
• Install external three-phase decoupling protection.
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6 Commissioning
6.1 Commissioning the Inverter
1. Check the following requirements before commissioning:
– The inverter is securely in place
– The AC cable is correctly connected (power distribution grid)
– All DC cables connected (strings)
– Unused DC inputs are closed using the corresponding DC connectors and sealing plugs
– The enclosure lid is securely screwed in place
– The Electronic Solar Switch is securely plugged
– The miniature circuit-breaker is correctly laid out
2. Switch on the miniature circuit-breaker.
☑ All 3 LEDs are glowing or blinking: The startup phase is starting.
☑ Green LED glows: commissioning has been successful.
or
☑ Green LED flashes in case of insufficient irradiation: grid connection conditions have not yet
been reached. Wait for sufficient irradiation.
or
☑ The red or yellow LED is glowing or flashing: a disturbance has occurred. Proceed to step 3.
A Green LED Operation
B Red LED Ground fault or varistor
defective
C Yellow LED Fault
Self test in accordance with DK 5940, Ed. 2.2 for initial commissioning
(applies to Italy only)
The Italian DK 5940 standard prescribes that an inverter can only operate on the power
distribution grid after the disconnection times for overvoltage, undervoltage, minimum
frequency and maximum frequency have been checked.
Start the self-test as described in section 6.3"Self-Test in Accordance with DK 59 40, Ed. 2.2
(Applies to Italy Only)" (page51). The test takes approx. 8 minutes.
3. Read section 9"Troubleshooting" (page66) and if necessary eliminate the fault or disturbance.
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6.2 Display Messages During the Startup Phase
• After commissioning, the inverter displays the device
type in the startup phase.
• After 5 seconds or when you tap again on the
enclosure lid, the firmware version of the internal
processors is displayed by the inverter.
• After a further 5 seconds or when you tap again, the
configured country standard is displayed by the
inverter (example: "GER/VDE 0126-1-1").
Show display messages again (valid from firmware version 2.10)
If you want to view the display messages of the startup phase again while in normal
operation, double tap the enclosure lid.
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6.3 Self-Test in Accordance with DK 5940, Ed. 2.2 (Applies to Italy Only)
6.3.1 Starting the Self-Test by Tapping
You can start testing the disconnection times by tapping on the enclosure cover. A prerequisite here
is that the country configuration of the inverter has been set to Italy (IT/DK5940) or "trimmed".
Proceed as follows for checking the disconnection times:
1. Connect the PV array with the inverter (see section 5.4"Connecting the PV Array (DC)"
(p age 30 )). The i nve rte r can onl y in iti ali ze if th e PV arr ay p rod uce s en oug h power. It i s th ere fore
not possible to test the disconnection times at night.
2. Connect the inverter with the power distribution grid and commission the inverter (see section
5.2"Connection to the Power Distribution Grid (AC)" (page24)and 6.1"Commissioning the
Inverter" (page49)).
☑ The inverter is now in the startup phase, i.e. all 3 LEDs are glowing at the same time.
3. Start the self-test immediately after all 3 LEDS have gone out by tapping on the display of the
inverter.
4. The question of whether you would like to start the
test sequence appears in the display. Tap on the
display again within 30 seconds to confirm the
question.
Once you have started the test sequence, the inverter checks the disconnection times for overvoltage,
undervoltage, maximum frequency and minimum frequency one after the other. During the tests, the
inverter shows the values in the display which are described in section 6.3.2"Completion of the SelfTest" (page52).
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6.3.2 Completion of the Self-Test
Note the values which are displayed during the self-test. These values must be entered into a test
report. The test results of the individual tests are displayed 3 times, one after the other. The respective
display message is displayed for 10 seconds.
The self-test changes the upper and lower disconnection thresholds for each protective function on a
linear basis with a modification of 0.05 Hz/s and 0.05 Vn/s for the frequency and voltage
monitoring. As soon as the actual measured value is outside the permitted range (altered
disconnection threshold), the inverter disconnects itself from the power distribution grid. In this way,
the inverter determines the reaction time and checks itself.
Overvoltage test
The inverter begins with the overvoltage test. During the
test sequence, the voltage limit applied is shown in the
display of the inverter.
The voltage limit is reduced successively until the shutdown threshold is reached and the inverter disconnects from the power distribution grid.
Once the inverter has disconnected from the power distribution grid, the display successively shows
the following values one after the other:
•Disconnection value,
•Calibration value,
•Reaction time,
• Current grid voltage.
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Undervoltage Test
After the overvoltage test, the inverter performs the
undervoltage test. During the test sequence, the current
calibration value of the voltage limit applied is shown in
the display of the inverter.
The voltage limit is increased successively until the shut-down threshold is reached and the inverter
disconnects from the power distribution grid.
Once the inverter has disconnected from the power distribution grid, the display successively shows
the following values one after the other:
•Disconnection value,
•Calibration value,
•Reaction time,
• Current grid voltage.
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Maximum frequency
In a third step, the inverter tests the maximum frequency.
During the test sequence, the frequency limit applied is
shown in the display of the inverter.
The frequency limit is reduced successively until the shutdown threshold is reached and the inverter disconnects from the power distribution grid.
Once the inverter has disconnected from the power distribution grid, the display successively shows
the following values one after the other:
•Disconnection value,
•Calibration value,
•Reaction timel,
• Current grid frequency.
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Minimum frequency
In the last step, the inverter tests the minimum frequency.
During the test sequence, the frequency limit applied is
shown in the display of the inverter.
The frequency limit is increased successively until the shutdown threshold is reached and the inverter disconnects from the power distribution grid.
Once the inverter has disconnected from the power distribution grid, the display successively shows
the following values one after the other:
•Disconnection value,
•Calibration value,
•Reaction time,
• Current grid frequency.
Wh en t he i nve rte r ha s ca rri ed o ut t he 4 tes ts, it s wit che s to "MPP Ope rat ion (MP P)" mod e. T he o rig ina l
calibration values are then reset and the inverter automatically connects to the power distribution grid.
If you would like to carry out the test again, you must disconnect the inverter, i.e. disconnect it on the
AC and DC sides and then later re-activate it. You can then restart the self-test as described in section
6.3.1"Starting the Self-Test by Tapping" (page51). The inverter starts again the test sequence, as
described in section 6.3.2"Completion of the Self-Test" (page52).
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Opening and Closing SMA Solar Technology AG
7 Opening and Closing
7.1 Security
DANGER!
Risk of lethal 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 discharges can damage the inverter!
The internal component parts of the inverter can be irreparably damaged by electrostatic
discharge.
• Ground yourself before touching a component.
7.2 Opening the Inverter
1. Disconnect the miniature circuit-breaker and secure against re-connection.
2. Pull the Electronic Solar Switch downward, slightly
towards the wall.
3. Using a current probe, ensure that no current is
present at all DC cables.
☑ If current is present, check the installation.
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4. Unlock and disconnect all DC connectors using a
3.5 mm screwdriver:
– Insert a screwdriver into one of the side slots (1).
– Disconnect DC plug connectors (2).
☑ All DC plug connectors are disconnected from
the inverter. The inverter is entirely disconnected
from the PV array.
DANGER!
Danger to life due to high voltages in the inverter!
The capacitors in the inverter require 5 minutes to discharge.
• Wait 5 minutes before opening the inverter.
5. Ensu re t hat no v olt age is p res ent at t he DC plu gs o n
the inverter.
☑If voltage is present, check the installation.
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Opening and Closing SMA Solar Technology AG
6. Remove all 6 lid screws and pull the enclosure lid
forwards to remove it.
7. Verify the absence of voltage L with respect to N at
the AC terminal with an appropriate meter.
☑If voltage is present, check the installation.
8. Ve rify the ab sence of vo ltage L wit h respect t o PE at
the AC terminal with an appropriate meter.
☑If voltage is present, check the installation.
☑ The inverter is free of voltage.
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7.3 Closing the Inverter
1. Tighten the enclosure lid with all screws and the
corresponding conical spring washers in the
sequence depicted on the right (torque: 6 Nm).
The toothing of the conical spring washers must
point toward the enclosure lid.
The scope of delivery of the inverter includes
another spare screw and conical spring washer.
DANGER!
Danger to life due to enclosure lid carrying voltage!
The grounding of the enclosure lid is ensured by the conical spring washers.
• Fast en the coni cal spring washers for all 6 screws wi th the toothing facing toward the
enclosure lid.
2. Check the assembled DC plug connectors for correct polarity and connect them to the inverter.
☑ The DC connectors click audibly into position.
To unlock the DC connectors, see section 7.2"Opening the Inverter" (page56).
3. Close all the DC inputs that are not needed as described in section 5.4.4"Connecting the PV
Array (DC)" (page34) to seal the inverter.
4. Ensure that all DC plug connectors are securely in place.
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Opening and Closing SMA Solar Technology AG
5. Check the Electronic Solar Switch for wear, as
described in section 8.3 and attach it firmly.
NOTICE!
Manipulating the connector in the handle can damage the
Electronic Solar Switch!
The connector inside the handle must remain movable in order to ensure proper contact.
Tightening the screw voids all warranty claims and creates a fire risk.
•Do not tighten the connector screw in the Electronic Solar Switch handle.
NOTICE!
Damage to Electronic Solar Switch!
If it is not correctly connected, the Electronic Solar Switch can be damaged by
high voltages.
• Plug the handle firmly onto the socket of the Electronic Solar Switch.
• Ensure that the Electronic Solar Switch is securely seated.
6. Switch on the miniature circuit-breaker.
7. Check whether the display field indicates a normal
operating state (see section 6"Commissioning"
(page49)).
☑ The inverter is now closed and in operation.
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SMA Solar Technology AG Maintenance and Cleaning
8 Maintenance and Cleaning
8.1 Cleaning the Inverter
If the display field is dirty and you find it difficult to read the operating data and operating states of
the inverter, clean the display field with a damp cloth. Do not use any corrosive substances
(e.g. solvents, abrasives) for cleaning.
8.2 Checking Heat Dissipation
8.2.1 Cleaning the fans
If the fan screens are only 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 connections as described in section
7.2"Opening the Inverter" (page56).
2. Wait for the fans to stop rotating.
Cleaning the ventilation grid
3. Remove the ventilation grids:
– P res s th e tw o la tch es on the rig ht e dge of th e fa n
screen to the right using a screwdriver and
loosen it from the bracket.
– Carefully remove the ventilation grid.
4. Clean the ventilation grid with a soft brush, a paint brush, a cloth or compressed air.
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Cleaning the fans
5. Press the front latches backward and the rear latch
forward.
6. Remove the fan by pulling it slowly and carefully downward.
7. Unlock and remove the plug.
The fan cables are long enough that you can lift the fans far enough out to disconnect the
internal plug in the inverter.
8. Remove the fan.
9. Clean the fan with a soft brush, a paint brush, or a damp cloth.
NOTICE!
Damage to the fan due to the use of pressurized air!
• Do not use compressed air to clean the fan. This can damage the fan.
10. After cleaning, reassemble everything in reverse order.
☑ The fans are cleaned.
11. Check the functioning of the fans as described in the following section.
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8.2.2 Checking the Fans
You can check that the fans are working in 2 ways:
• Set the "Fan-Test" parameter to "1" in the installer mode with a communication product.
or
• Plug the provided jumper into the sequential control system board.
Setting Parameters
1. Request the installer password from the SMA Serviceline (contact: see Page 85).
2. Set the "Fan-Test" parameter to "1" in the installer mode.
3. Check the fans' air flow.
The inverter takes cooling air in from underneath and then blows it back out on the upper sides.
Liste n for an y unusual noise , which cou ld indi cate incor rect in stallation or that the fans are faulty.
4. After checking the fans, set the "Fan-Test" parameter back to "0".
☑ The test of the fans has been completed.
Plugging the Jumper
The inverter recognizes the jumper only after the system has been restarted (i.e. all LEDs must have
gone out before a restart).
1. Open the inverter as described in section 7.2"Opening the Inverter" (page56).
2. Plug the provided jumper in the slot on the sequential control system board as shown below.
3. Close the inverter as described in section 7.3"Closing the Inverter" (page59).
4. Check the fans' air flow.
The inverter takes cooling air in from underneath and then blows it back out on the upper sides.
Liste n for an y unusual noise , which cou ld indi cate incor rect in stallation or that the fans are faulty.
5. After checking the fans, remove the jumper. Open and close the inverter as described in section
7"Opening and Closing" (page56).
☑ The test of the fans has been completed.
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Maintenance and Cleaning SMA Solar Technology AG
8.2.3 Cleaning the Ventilation Grids
The inverter takes cooling air in from underneath via the fan and blows it out again through the
ventilation grids on the upper sides. Clean the ventilation grids if they are dirty.
Procedure
1. Remove the ventilation grids.
Insert your finger above in the space between the
ventilation grid and the enclosure and remove the
ventilation grid to the side.
2. Clean the ventilation grids with a soft brush, a paint
brush, or compressed air.
3. Re-attach the ventilation grids to the inverter.
The ventilation grids must be attached according to
the inside inscription ("links/left" and
"rechts/right").
NOTICE!
The inverter can be damaged if insects enter!
• The ventilation grids must not be removed permanently, because otherwise the
device is not protected against insects entering.
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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
El ect ron ic S ola r Sw itc h, yo u ca n es tim ate the wea r on eith er t he metal tongues (A) or on the plastic (B).
Result Measure
☑ The metal tongues in the
Electronic Solar Switch are undamaged
and not discolored (A).
or
☑ The plastic in the Electronic Solar Switch is
undamaged (B).
1. Securely attach the Electronic Solar Switch
handle.
2. Recommission the inverter as described in
section 6"Commissioning" (page49).
☑ The metal tongues in the
Electronic Solar Switch have a brown
discoloration or are burned through (A).
Th e El ectroni c So lar Swi tch can no l onger re liably
disconnect the DC supply.
1. Replace the Electronic Solar Switch handle
before attaching it again (for the order
number, see section 12"Accessories"
(page84).
2. Recommission the inverter as described in
section 6"Commissioning" (page49).
or
☑The plastic in the Electronic Solar Switch
shows thermal deformation (B).
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Troubleshooting SMA Solar Technology AG
9 Troubleshooting
If the inverter displays other blink codes or fault messages than those described below, contact the
SMA Serviceline.
You will also find a description of display messages during operation, status messages and measuring
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
Flashes Flashes Flashes OK (startup phase)
is glowing continuously is not glowing is not glowing OK (feed-in operation)
is glowing continuously is not glowing Ground fault or varistor
defective
is glowing continuously OK (startup phase)
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 (nighttime
is not glowing is not glowing OK (stop)
is glowing continuously is not glowing Ground fault or varistor
defective
is not glowing is not glowing OK (waiting, grid
monitoring)
is glowing continuously is not glowing Ground fault or varistor
defective
is not glowing is not glowing OK (derating)
deactivation or
Electronic Solar Switch
not connected)
is glowing/flashing Fault
is glowing continuously is not glowing Ground fault or varistor
defective
is glowing/flashing Ground fault or varistor
defective and
disturbance
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9.2 Fault Messages
When a disturbance occurs, the inverter generates a message which depends on the operating mode
and the type of the detected disturbance.
Message Description and corrective measure
!PV-Overvoltage!
!DISCONNECT DC!
ACVtgRPro The 10-minute-average grid voltage is no longer within the permissible
Bfr-Srr Internal measurement comparison fault or hardware defect.
Overvoltage at DC input.
Overvoltage can destroy the inverter.
Corrective measures
Disconnect the inverter from the power distribution grid immediately!
1. Turn off the miniature circuit-breaker.
2. Remove the Electronic Solar Switch.
3. Remove all DC connectors.
4. Check DC voltage:
– If the DC voltage is above the maximum input voltage, check the
plant design or contact the PV array installer.
– If the DC voltage is under the maximum input voltage, reconnect
the PV array to the inverter as described in section
5.4"Connecting the PV Array (DC)" (page30).
If the message occurs again, disconnect the inverter again and contact
the SMA Serviceline (see section 13"Contact" (page85)).
range. This can be caused by either of the following:
• The grid voltage at the connection point is too high.
• The grid impedance at the connection point is too high.
The inverter disconnects to assure compliance with the voltage quality of
the public grid.
Corrective measures
Check the grid voltage at the connection point of the inverter:
• If, due to the local grid conditions, the grid voltage is 253 V or
more, ask the distribution grid operator whether the voltage at the
feed-in point can be adjusted, or whether they would agree to an
alteration of the limit value "ACVtgRPro" parameter for power
quality monitoring.
• If the grid voltage is continually within the tolerance range and this
fault message is still displayed, contact the SMA Serviceline.
Corrective measures
• If this disturbance occurs frequently, contact the SMA Serviceline.
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Message Description and corrective measure
Derating The "Derating" operating state is a normal operating condition which may
occur occasionally and can have several causes.
Once the inverter enters the "Derating" state, it will display the "Derating"
warning until the next total shutdown of the device (at the end of the day).
Corrective measures
• Check heat dissipation as described in section 8.2"Checking Heat
Dissipation" (page61).
dZac-Bfr
dZac-Srr
Sudden changes in grid impedance exceed the permissible range
("Bfr" or "Srr" are internal messages of no relevance for the user).
The inverter disconnects itself from the public grid for safety reasons.
Corrective measures
Check the grid impedance and observe how often major deviations
occur.
If repeated frequency variations occur and this is causing "dZac-Bfr" or
"dZac-Srr" errors, ask the distribution grid operator if he would agree to
modify the operation parameters (dZac-Max).
Discuss any changes to this operation parameter with the
SMA Serviceline.
EEPROM Transition disturbance while data is being written or read from EEPROM.
The data is not relevant for safe operation.
• The disturbance has no effect on the performance of the inverter.
EEPROM dBh EEPR OM dat a is defective, the in verter has switched i tself off because the
loss of data has disabled important functions of the inverter.
Corrective measures
• Contact the SMA Serviceline.
EeRestore One of the duplicate data sets in the EEPROM is defective and has been
reconstructed without loss of data.
• This fault message only serves to inform you and has no effect on
the performance of the inverter.
Fac-Bfr
Fac-Srr
FacFast
The grid 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 itself from the public grid for safety
reasons.
Corrective measures
• Check the grid connection and contact the distribution grid
operator if necessary.
• If the power frequency is within the tolerable range, but "Fac-Bfr,"
"Fac-Srr"or "FacFast" disturbances are still displayed, contact the
SMA Serviceline.
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Message Description and corrective measure
Imax/overcurrent Overcurrent on the AC side. This message is displayed if the current on
the AC grid is larger than specified.
Corrective measures
• Check the system design and grid conditions.
K1-Close
K1-Open
Fault during relay test.
Corrective measures
• If this fault frequently occurs or occurs several times consecutively,
contact the SMA Serviceline.
MSD-Fac Internal measurement comparison fault or hardware defect.
Corrective measures
• If this disturbance occurs frequently, contact the SMA Serviceline.
MSD-Vac Internal measurement comparison fault or hardware defect.
Corrective measures
• If this disturbance occurs frequently, contact the SMA Serviceline.
MSD-Timeout Internal measurement comparison fault or hardware defect.
Corrective measures
• If this disturbance occurs frequently, contact the SMA Serviceline.
MSD-Zac Internal measurement comparison fault or hardware defect.
Corrective measures
• If this disturbance occurs frequently, contact the SMA Serviceline.
Offset The "Offset" operating state is a normal operating condition that occurs
prior to grid monitoring.
If "Offset" is displayed as a fault, then there is a disturbance in the data
logging.
Corrective measures
• If this disturbance occurs frequently, contact the SMA Serviceline.
PowerBalance The Sunny Mini Central is part of a three-phase system with two further
Sunny Mini Centrals equipped with the SMA Power Balancer for
preventing unbalanced loads. The operation parameter "PowerBalancer"
is set to "PhaseGuard" or "FaultGuard".
Corrective measures
• For more detailed descriptions of the operation modes
"PhaseGuard" and "FaultGuard", refer to section 5.5"Connection
of the SMA Power Balancer" (page38).
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Legal Restrictions SMA Solar Technology AG
Message Description and corrective measure
Riso The electrical insulation between the PV plant and ground is faulty.
The resistance between the DC plus and/or DC minus connection and
ground is outside the defined limit range.
Corrective measures
• Check the insulation of the PV plant.
• Check the PV plant for ground faults as described in section
9.3.1"Checking the PV Array for Ground Faults" (page74).
ROM The inverter's firmware is faulty.
Corrective measures
• If this disturbance occurs frequently, contact the SMA Serviceline.
Shutdown Temporary inverter disturbance.
Corrective measures
• Contact the SMA Serviceline.
STM Timeout Internal program run disturbance.
Corrective measures
• If this disturbance occurs frequently, contact the SMA Serviceline.
Trafo-Temp-F Temperatures in the transformer have exceeded the acceptable limit. The
inverter stops feeding the grid until the temperature lies within the
acceptable range.
Corrective measures
• If this problem occurs frequently, check the heat dissipation of the
inverter, as described in section 8.2"Checking Heat Dissipation"
(page61).
Trafo-Temp-W If the transformer reaches an inadmissibly high temperature, the inverter
stops feeding the grid until the transformer has reached an admissible
temperature and the plant can begin feeding the grid again. The "TrafoTemp-W" warning is displayed until the device is completely switched off.
Corrective measures
• Check the heat dissipation of the inverter, as described in section
8.2"Checking Heat Dissipation" (page61).
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Message Description and corrective measure
Vac-Bfr
Vac-Srr
The grid voltage is no longer within the permissible range ("Bfr" or "Srr" is
an internal message that has no meaning for the user). This fault can be
caused by any of the following conditions:
• Power distribution grid disconnected (miniature circuit-breaker,
fuse),
•AC cable is broken or
• AC cable is highly resistive.
The inverter disconnects itself from the public grid for safety reasons.
Corrective measures
• Check the grid voltage and connection on the inverter.
• If the grid voltage lies outside the acceptable range because of
local grid conditions, ask the distribution grid operator if the
voltages can be adjusted at the feed-in point or if they agree to
ch ang es i n the val ues of t he m oni tor ed opera tio nal lim its (operation
parameters: Vac-Min and Vac-Max).
• If the grid voltage lies within the tolerance range, yet "Vac-Bfr" or
"Vac-Srr" faults are still displayed, contact the SMA Serviceline.
Vpv-Max Overvoltage at DC input. The inverter could be damaged.
Corrective measures
Disconnect the inverter from the power distribution grid immediately:
1. Turn off the miniature circuit-breaker.
2. Remove the Electronic Solar Switch.
3. Remove all DC connectors.
4. Check DC voltage:
– If the DC voltage is above the maximum input voltage, check the
plant design or contact the PV array installer.
– If the DC voltage is under the maximum input voltage, reconnect
the PV array to the inverter as described in section
5.4"Connecting the PV Array (DC)" (page30).
If the message occurs again, disconnect the inverter again and contact
the SMA Serviceline (see section 13"Contact" (page85)).
Watchdog Internal program run disturbance.
Corrective measures
• If this disturbance occurs frequently, contact the SMA Serviceline.
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Message Description and corrective measure
Zac-Bfr
Zac-Srr
The grid impedance has left the permissible range. The suffixes "Bfr" und
"Srr" are not relevant.
The inverter disconnects itself from the public grid for safety reasons. The
impedance is calculated from both the grid impedance and the
impedance of the AC cable of the inverter.
Corrective measures
• Check the grid impedance and grid connection on the inverter.
• Use an AC cable with an adequate cross-sectional area
(= low impedance) as described in section 5.2"Connection to the
Power Distribution Grid (AC)" (page24). If required, re-tighten the
screws on the AC terminals.
• If this fault recurs, contact the SMA Serviceline.
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9.3 Red LED is Glowing Continuously
If the red status display LED lights up continuously during operation, there is a ground fault in the
PV array or at minimum one varistor for overvoltage protection is faulty.
Procedure
1. Check for ground faults in the PV array as described in section 9.3.1"Checking the PV Array
for Ground Faults" (page74).
2. If the red LED continues to glow, check the varistors as described in section 9.3.2"Checking the
Function of the Varistors" (page76).
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9.3.1 Checking the PV Array for Ground Faults
1. Disconnect the inverter from both the DC and AC connections as described in section
7.2"Opening the Inverter" (page56).
DANGER!
Risk of lethal electric shock!
• Only touch the cables of the PV array on their insulation.
• Do not connect strings with ground faults to the inverter.
NOTICE!
Excessive voltages can destroy the measuring device.
• Only use measuring devices with a DC input voltage range up to at least 1 000 V.
2. Measure the voltages between the plus pole of
each string and the ground potential (PE).
3. Measure the voltages between the minus pole of
each string and the ground potential (PE).
4. Measure the voltages between the positive and
negative poles of each string.
☑ A ground fault exists if the measured voltages are stable and the sum of the voltages from
the positive pole to the ground potential and from the negative pole to the ground potential
of a string is approximately equal to the voltage between the positive and negative poles.
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Result Measure
☑You have found a ground fault. • The installer of the PV array must remedy
the ground fault in the affected string.
You can determine the location of the
ground fault as described below.
•Do not reconnect the faulty string.
• Close the inverter and commission it as
described in section 7.3"Closing the
Inverter" (page59).
☑You have found no ground 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" (page76).
Location of the ground fault
The approximate position of the ground fault can be determined from the ratio of the measured
voltages between the plus pole against ground potential (PE) and the minus pole against
ground potential (PE).
Example:
In this case, the ground fault is between the second and third PV modules.
☑ The ground fault check is finished.
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9.3.2 Checking the Function of the Varistors
Varistors are wear parts. Their functional efficiency diminishes with age or repeated strain as a result
of overvoltage. It is therefore possible that one of the thermally monitored varistors has lost its
protective function.
Position of varistors
You can determine the position of the varistors using the illustration below.
Observe the following assignment of the
terminals:
• Terminal A: outer terminal
(varistor connection with loop [crimp])
• Terminal B: middle terminal
• Terminal C: outer terminal
(varistor connection without loop
[crimp])
You can check the varistors in the following manner:
1. Open the inverter as described in section 7.2"Opening the Inverter" (page56).
2. Use a multimeter to ensure that all of the varistors in
the installed state have a conducting connection
between connectors B and C.
Result Measure
☑There is a conducting
connection.
There is probably a different fault in the inverter.
• Close the inverter as described in section 7.3"Closing
the Inverter" (page59).
• Contact the SMA Serviceline (see section 13"Contact"
(page85)).
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Result Measure
☑There is no conducting
connection.
The respective varistor is defective and must be replaced.
Varistor failure is generally due to influences that affect all
varistors similarly (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. You must order
replacement varistors directly from
SMA Solar Technology AG (see section 12"Accessories"
(page84)).
• 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.
•Do not operate the inverter without varistors in PV plants with a high risk of
overvoltages.
• Replacement varistors should be obtained as soon as possible.
3. Insert an insertion tool into the openings of the
terminal contacts (1).
☑ This releases the terminals.
If you do not receive an insertion tool for operating
the terminals with your replacement varistors,
contact SMA Solar Technology AG. As an
alternative, the individual terminal contacts can be
operated using a 3.5 mm wide screwdriver.
4. Remove varistor (2).
5. Insert new varistor (3).
The pole with the small loop (crimp) must be fitted
to terminal 1 when replacing the varistor.
6. Close the inverter as described in section
7.3"Closing the Inverter" (page59).
☑ The check and replacement of the varistors is
completed.
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Decommissioning SMA Solar Technology AG
10 Decommissioning
10.1 Disassembling the Inverter
1. Open the inverter as described in section 7.2"Opening the Inverter" (page56).
2. Remove all cables from the inverter.
3. Tighten the enclosure lid with all screws and the
corresponding conical spring washers in the
sequence depicted on the right (torque: 6 Nm).
The toothing of the conical spring washers must
point toward the enclosure lid.
4. Remove the ventilation grids on both sides.
5. Remove the two screws on the left and right side of
the inverter that attach it to the wall bracket.
6. Disconnect the theft protection, if applicable.
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7. Remove the inverter upwards from 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 disassembled.
10.2 Packing the Inverter
If possible, always pack the inverter in its original packaging. If it is no longer available, you can also
use an equivalent carton. The carton must be completely closeable, have a handle system and be
made 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 locally applicable disposal
regulations for electronic waste. Alternatively, send it back to SMA Solar Technology AG with
shipping paid by sender, and labeled "ZUR ENTSORGUNG" ("FOR DISPOSAL") (contact see page
85).
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Technical Data SMA Solar Technology AG
11 Technical Data
DC Input
Maximum DC power at cos φ = 1 7 500 W
Maximum input voltage* 800 V
MPP voltage range 335 V … 560 V
Rated input voltage 340 V
Minimum input voltage 290 V
Start input voltage 400 V
Maximum input current 23 A
Maximum input current per string 23 A
Number of independent MPP inputs 1
Strings per MPP input 4
* The maximum open-circuit voltage, which can occur at a cell temp era ture of − 1 0°C , mu st n ot ex cee d th e ma xim um i npu t vol tag e.
AC output
Rated power at 230 V, 50 Hz 6 650 W
Maximum apparent AC power 7 000 VA
Rated grid voltage 230 V
Nominal AC voltage 220 V / 230 V / 240 V
AC voltage range 180 V … 265 V
AC nominal current at 220 V 30.2 A
AC nominal current at 230 V 28.9 A
AC nominal current at 240 V 27.7 A
Maximum output current 31 A
Total harmonic factor of output current at
AC THF < 2%,
AC power > 0.5 rated power
Rated power frequency 50 Hz
AC power frequency 50 Hz / 60 Hz
Operating range at AC power frequency 50 Hz 44 Hz … 55 Hz
Operating range at AC power frequency 60 Hz 54 Hz … 65 Hz
Displacement power factor, adjustable 0.8
overexcited
Feed-in phases 1
Connection phases 1
Overvoltage category as per IEC 60644-1 III
≤3%
…0.8
underexcited
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SMA Solar Technology AG Technical Data
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 50 A
Ground fault monitoring Insulation monitoring: R
> 1 M Ω
iso
Galvanic isolation Available
General Data
Width x Height x Depth with
468 mm x 653 mm x 242 mm
Electronic Solar Switch
Weight 65 kg
Length x width x height of packaging 396 mm x 803 mm x 596 mm
Transport weight 68 kg
Climatic category according to IEC 60721-2-1 4K4H
Operation temperature range ‒25°C … +60°C
Maximum permissible value for relative humidity,
100%
non-condensing
Maximum operating altitude above mean sea
2 000 m
level
Noise emission (typical) ≤ 41 dB(A)
Power loss in night operation 0.25 W
Topology LF transformer
Cooling concept OptiCool: temperature-controlled fan
Fan connection designed for safe disconnection in accordance
with DIN EN 50178:1998-04
Degree of protection for electrics according to
IP65
IEC 60529
Protection class (according to IEC 62103) I
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Technical Data SMA Solar Technology AG
Country standards, as of 07/2011* VDE 0126-1-1
VDE-AR-N-4105
AS4777
C10/11
PPDS
GBT19939-2005
CGC GF001-2009
UTE C15-712-1
PPC
DK 5940
EN 50438
RD 1663/2000
RD 661/2007
IEC 61727 PEA
G83/1-1
G 59/2
*EN 50438: Does not apply to all national standard deviations.
VDE-AR-N-4105-HP: Valid from firmware version 2.10. Setting in accordance with VDE-AR-N-4105 (Germany) for PV plants
> 13.8 kVA.
Climatic conditions in accordance with 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
Climatic conditions in accordance with IEC 60721-3-4, transport type E, class 2K3
Temperature range − 25°C … +70°C
Features
DC connection SUNCLIX DC connector
AC connection Spring terminal
Display LC text display
Bluetooth
RS485, galvanically isolated optional
82 SMC70HV11-IA-IEN112970 Installation Manual
®
Wireless Technology optional
Page 83
SMA Solar Technology AG Technical Data
Electronic Solar Switch
El ect ric al e ndu ran ce i n th e ev ent of a s hor t ci rcu it,
Min. 50 switching processes
with a nominal current of 35 A
Maximum switching current 35 A
Maximum switching voltage 800 V
Maximum PV power 12 kW
Degree of protection when plugged IP65
Degree of protection when unplugged IP21
Torque
Enclosure lid screws 6.0 Nm
Additional ground terminal 6.0 Nm
Cylinder head screw for attaching the enclosure
6.0 Nm
to the wall mounting bracket
SUNCLIX lock nut 2.0 Nm
Screw terminal AC connection 2.5 Nm
RS485 communication connection 1.5 Nm
Connection of the SMA Power Balancer 1.5 Nm
Grid forms
IT grid Suitable
TN-C grid Suitable
TN-S grid Suitable
TN-C-S grid Suitable
TT grid, if U
Split Phase Suitable
< 30 V Suitable
N_PE
Efficiency
Maximum efficiency, η
European weighted efficiency, η
Installation Manual SMC70HV11-IA-IEN112970 83
max
EU
96.2%
95.5%
Page 84
Accessories SMA Solar Technology AG
12 Accessories
You will find the corresponding accessories and replacement parts for your product in the following
overview. If required, you can order these from SMA Solar Technology AG or your dealer.
Description Brief Description SMA order number
Ventilation grid Ventilation grid set "rechts/links" (right/left) as
replacement part
Electronic Solar Switch ESS handle replacement part ESS-HANDLE:04
Power Balancer plug Upgrade kit to retrofit a Sunny Mini Central
eq uip ped wit h an SMA Pow er B alancer to t he
SMA Power Balancer connector system
Power Balancer Y cable Connecting cable (2 x 2 m) for
SMA Power Balancer connector system
RS485 upgrade kit RS485 interface 485PB-SMC-NR
Bluetooth upgrade kit Bluetooth communication interface BTPBINV-NR
Power Reducer Box Power Reducer Box POWERREDUCERBOX
Replacement varistors Set of thermally monitored varistors (2 pc.)
incl. insertion tool
Insertion tool for the
replacement of varistors
Positive grounding set Upgrade kit for the positive connection to
Negative grounding set Upgrade kit for the negative connection to
SUNCLIX DC plug
connector
Insertion tool for varistors sets SB-TVWZ
ground of the DC input
ground of the DC input
Field connector for conductor cross-sectional
areas 2.5 mm² … 6 mm²
45-7202
Also enter the inverter's
serial number.
PBL-SMC-10-NR
PBL-YCABLE-10
MSWR-TV7
ESHV-P-NR
ESHV-N-NR
SUNCLIX-FC6-SET
84 SMC70HV11-IA-IEN112970 Installation Manual
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SMA Solar Technology AG Contact
13 Contact
If you have technical problems concerning our products, contact the SMA Serviceline. We need the
following information in order to provide you with the necessary assistance:
• Device type
• Inverter serial number
• Type and number of the PV modules connected
• Optional equipment, e.g. communication products
• Blink code or display message of the inverter
SMA Solar Technology AG
Sonnenallee 1
34266 Niestetal, Germany
www.SMA.de
SMA Serviceline
Inverters +49 561 9522 1499
Communication: +49 561 9522 2499
Fax: +49 561 9522 4699
E‑Mail: Serviceline@SMA.de
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Page 87
SMA Solar Technology AG Legal Restrictions
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.
Exclusion of liability
The general terms and conditions of delivery of SMA Solar Technology AG shall apply.
The content of these documents is continually checked and amended, where necessary. However, discrepancies cannot be
excluded. No guarantee is made for the completeness of these documents. The latest version is available online at www.SMA.de
or from the usual sales channels.
Guarantee or liability claims for damages of any kind are excluded if they are caused by one or more of the following:
• Damages during transportation
• Improper or inappropriate use of the product
• Operating the product in an unintended environment
• Operating the product whilst ignoring relevant, statutory safety regulations in the deployment location
• Ignoring safety warnings and instructions contained in all documents relevant to the product
• Operating the product under incorrect safety or protection conditions
• Altering the product or supplied software without authority
• The product malfunctions due to operating attached or neighboring devices beyond statutory limit values
• In case of unforeseen calamity or force majeure
The use of supplied software produced by SMA Solar Technology AG is subject to the following conditions:
• SMA Solar Technology AG rejects any liability for direct or indirect damages arising from the use of software developed by
SMA Solar Technology AG. This also applies to the provision or non-provision of support activities.
• Supplied software not developed by SMA Solar Technology AG is subject to the respective licensing and liability agreements
of the manufacturer.
SMA Factory Warranty
The current guarantee conditions come enclosed with your device. These are also available online at www.SMA.de and can be
downloaded or 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 license.
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 2011 SMA Solar Technology AG. All rights reserved
®
word mar k and logos are registered tra demark s owned by Bluetooth SIG, Inc. and any use of suc h marks by SMA
Installation Manual SMC70HV11-IA-IEN112970 87
Page 88
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