SMA SUNNY MINI CENTRAL 6000TL User manual

PV Inverter
SUNNY MINI CENTRAL 6000TL / 7000TL / 8000TL
Installation Guide
SMC6-8TL-IEN093231 | IME-SMCTL_60_70_80 | Version 3.1 EN

SMA Solar Technology AG Table of Contents
Installation Guide SMC6-8TL-IEN093231 3
Table of Contents
1 Notes on this Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.1 Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.2 Target Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.3 Storage of Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.4 Additional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.5 Symbols Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2 Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 Appropriate Usage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3 Unpacking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1 Packing List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.2 Checking for Transport Damage. . . . . . . . . . . . . . . . . . . . . . . . 12
3.3 Identifying the Sunny Mini Central . . . . . . . . . . . . . . . . . . . . . . 12
4 Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1 Selection of the Mounting Location . . . . . . . . . . . . . . . . . . . . . 13
4.1.1 Dimensions and Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1.2 Ambient Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.1.3 Safety Clearances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.1.4 Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2 Mounting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5 Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.1 Connection Area Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.1.1 View from Below. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.1.2 View from Inside . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.2 Connection to the Public Grid (AC) . . . . . . . . . . . . . . . . . . . . . 22
5.3 PV Generator (DC) Connection . . . . . . . . . . . . . . . . . . . . . . . . 26

Table of Contents SMA Solar Technology AG
4SMC6-8TL-IEN093231 Installation Guide
5.4 Connection of the SMA Power Balancer . . . . . . . . . . . . . . . . . 29
5.4.1 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.4.2 Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.4.3 Functionality Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5.5 Slot for Communication Interfaces . . . . . . . . . . . . . . . . . . . . . . 38
6 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
6.1 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
6.1.1 Setting the Display Language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
6.2 LED Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
7 Opening and Closing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
7.1 Opening the Sunny Mini Central . . . . . . . . . . . . . . . . . . . . . . . 46
7.2 Closing the Sunny Mini Central . . . . . . . . . . . . . . . . . . . . . . . . 48
8 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
8.1 Checking Heat Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
8.1.1 Cleaning the Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
8.1.2 Checking the Fans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
8.1.3 Cleaning the Handle Covers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
8.2 Inspection of the Electronic Solar Switch (ESS). . . . . . . . . . . . . 53
9 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
9.1 The Red LED is Continuously On. . . . . . . . . . . . . . . . . . . . . . . . 54
9.1.1 Check PV Generator for Ground Fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
9.1.2 Check the function of the varistors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
10 Decommissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
10.1 Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
10.2 Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
10.3 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
10.4 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

SMA Solar Technology AG Table of Contents
Installation Guide SMC6-8TL-IEN093231 5
11 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
12 Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Table of Contents SMA Solar Technology AG
6SMC6-8TL-IEN093231 Installation Guide

SMA Solar Technology AG Notes on this Manual
Installation Guide SMC6-8TL-IEN093231 7
1 Notes on this Manual
1.1 Validity
This installation guide describes the installation and commissioning of SMA inverters of the type Sunny
Mini Central 6000TL, 7000TL, and 8000TL.
1.2 Target Group
Only qualified electricians may install and commission Sunny Mini Central units.
1.3 Storage of Manuals
All manuals for the Sunny Mini Central and the installed components must be stored with the system
documentation and be accessible at all times.
1.4 Additional Information
You will find further information on special topics such as designing a line circuit breaker or the
description of operation parameters in the download area at www.SMA.de/en.

Notes on this Manual SMA Solar Technology AG
8SMC6-8TL-IEN093231 Installation Guide
1.5 Symbols Used
The following types of safety instructions and general information appear in this document:
DANGER!
DANGER indicates a hazardous situationwhich, if not avoided, will result in death or
serious injury.
WARNING!
CAUTION indicates a hazardous situation which, if not avoided, could result in minor or
moderate 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.

SMA Solar Technology AG Security
Installation Guide SMC6-8TL-IEN093231 9
2 Security
2.1 Appropriate Usage
The Sunny Mini Central is a PV inverter that converts the DC current of solar cells to AC current and
feeds it into the public grid.
Principle of a PV System with the Sunny Mini Central
The Sunny Mini Central may only be operated with solar generators (modules and cabling) of
protection class II.
PV modules with large capacities relative to ground, such as thin-film modules with cells on a metallic
substrate, are therefore only to be implemented if their coupling capacity is below 50 nF/kWp.
During grid feeding, a leakage current flows from the cells to the earth. The magnitude of this current
depends on the manner in which the modules are installed and, to no small extent, on the weather
(rain, snow). This operational leakage current is not to exceed 50 mA.
When planning the PV system, ensure that the values comply with the permitted operating range of all
components at all times. The free design program "Sunny Design" (www.SMA.de/en/SunnyDesign) will
assist you in this. The manufacturer of the PV modules must have approved the modules for use with this
Sunny Mini Central unit. You must also ensure that all measures recommended by the module
manufacturer for long-term maintenance of the module properties are taken (see also "Module
Technology" technical information, in the download area of www.SMA.de/en).
Another use of the Sunny Mini Central as well as unauthorized installations or modifications can
compromise the operating safety and void the warranty claims and the operation permission.

Security SMA Solar Technology AG
10 SMC6-8TL-IEN093231 Installation Guide
The following is not permitted:
• Using the Sunny Mini Central for purposes other than those indicated in this installation guide,
• Connecting other power supply units other than PV modules to the Sunny Mini Central,
• Modifying the Sunny Mini Central or installing components that have not been expressly
recommended or sold by SMA Solar Technology!
2.2 Safety Instructions
DANGER!
Danger to life due to high voltages in the Sunny Mini Central!
All work on the Sunny Mini Central must be carried out by a qualified electrician.
CAUTION!
Danger of burn injuries due to hot housing parts!
• Do not touch the housing body during operation.
• Only touch the cover during operation.
NOTICE!
Dust or water entering the Sunny Mini Central can damage the device!
If the Electronic Solar Switch has been pulled out, the Sunny Mini Central only has a
protection rating of IP21.
If the device has been temporarily decommissioned, proceed as follows to restore the IP65
protection rating:
• Unplug all DC plug connectors and seal them with the protecting caps provided.
• Attach the Electronic Solar Switch.
PV generator ground connection
Comply with the local requirements for grounding the modules and the PV generator.
SMA Solar Technology recommends connecting the generator frame and other electricity
conducting surfaces such that there is continuous conduction and to connect them to the
ground in order to reach maximum protection for property and persons.

SMA Solar Technology AG Unpacking
Installation Guide SMC6-8TL-IEN093231 11
3 Unpacking
3.1 Packing List
Object Quantity Description
A 1 Sunny Mini Central
B 1 Wall mounting bracket
C 1 Installation guide
D1 User manual
E 1 Set of documents with explanations and certificates
1 Inverter accessories bag
1 Communication accessories bag (optional),
packing list, see separate communication manual
Contents of inverter accessories bag:
F 1 Cable screw connection for AC connection
G 1 Nut for AC connection cable screw connection
H 1 Clamping clip for additional connection to ground
I 2 Washers: 1 x for cover screws (replacement), 1 x for ground connection
cable terminal
J 2 Cylinder head screws (M6 x 16): 1 x for cover (replacement), 1 x for ground
connection cable terminal
K 1 Jumper for fan test
L 2 Cylinder head screws (M6 x 8) for securing the Sunny Mini Central on the
wall mounting bracket
M 1 Silicone tube for insulation of the SMA Power Balancer connection cable
A
B
K
G
F
J
HIL
CD
E
M

Unpacking SMA Solar Technology AG
12 SMC6-8TL-IEN093231 Installation Guide
3.2 Checking for Transport Damage
Check the Sunny Mini Central for visible external damage, such as cracks in the housing or display.
Please contact your dealer if you find any damage.
3.3 Identifying the Sunny Mini Central
You can identify the Sunny Mini Central
using the type label. The type label is on
the right side of the housing.
Series number
Device type
Country-specific
standard for the grid
isolation point
according to which
the device may be
preset

SMA Solar Technology AG Mounting
Installation Guide SMC6-8TL-IEN093231 13
4 Mounting
4.1 Selection of the Mounting Location
4.1.1 Dimensions and Weight
DANGER!
Lethal danger caused by fire or explosion!
Despite careful construction, a fire can occur with electrical devices.
• Do not mount the Sunny Mini Central on flammable construction materials.
• Do not mount the Sunny Mini Central in areas where highly flammable materials are
stored.
• Do not mount the Sunny Mini Central in areas where there is a risk of explosion.
CAUTION!
Danger of burn injuries due to hot housing parts!
• Mount the Sunny Mini Central such that it cannot be touched inadvertently.
468 mm
242 mm
613 mm
33 kg

Mounting SMA Solar Technology AG
14 SMC6-8TL-IEN093231 Installation Guide
4.1.2 Ambient Conditions
• The mounting location and mounting method must be suitable for the weight and dimensions of
the Sunny Mini Central.
• Mounting on a solid surface.
• The mounting location must be accessible at all times.
• The ambient temperature should be below 40 °C at all times to guarantee optimal operation.
• Do not expose the Sunny Mini Central to direct sunlight to avoid a power reduction due to
excessive heating.
• In a living area, do not mount the unit on
plasterboard etc. walls as otherwise audible
vibrations are likely to result.
The Sunny Mini Central can make noises when in
use which can be seen as a nuisance when installed
in a living area.
4.1.3 Safety Clearances
Observe the following minimum clearances to walls, other devices or objects to guarantee sufficient
heat dissipation and enough space for pulling the Electronic Solar Switch handle.
Direction Minimum clearance
Sides 30 cm
Above 30 cm
Below 50 cm
Front 5 cm
Multiple Sunny Mini Centrals installed in areas with high ambient temperatures
The individual Sunny Mini Central units must be far enough apart to ensure that the
individual Sunny Mini Central units do not take in the cooling air of the neighboring unit.
If necessary, increase the clearance and ensure that the supply of cool air is sufficient to
cool the Sunny Mini Centrals.
Electronic
Solar
Switch

SMA Solar Technology AG Mounting
Installation Guide SMC6-8TL-IEN093231 15
4.1.4 Position
• Vertical installation or tilted backwards by max. 45°.
• Never install the device with a forward tilt.
• Do not install horizontally.
• Install at eye level to allow operating modes to be read at all times.

Mounting SMA Solar Technology AG
16 SMC6-8TL-IEN093231 Installation Guide
4.2 Mounting Instructions
1. Position the drill holes with the aid of the wall mounting bracket and drill the holes. In doing so,
use two to four of the six holes in the middle.

SMA Solar Technology AG Mounting
Installation Guide SMC6-8TL-IEN093231 17
2. Secure the wall mounting bracket using suitable
screws and washers.
3. Attach the Sunny Mini Central to the wall bracket
using the mounting opening in the rear wall of the
housing.
CAUTION!
Risk of injury due to the heavy weight of the Sunny Mini Central!
The Sunny Mini Central weighs 33 kg
• Mount the wall mounting bracket with the appropriate mounting material (depending
on subsurface).
• Use upper and lower edgewise handles
(A) or steel bar in the housing opening
(B - diameter of max. 30 mm) for
transport and mounting.
A
B

Mounting SMA Solar Technology AG
18 SMC6-8TL-IEN093231 Installation Guide
4. Screw the Sunny Mini Central onto the wall
mounting bracket on both sides using the
M6 x 8 mm screws provided.
Only fasten the screws using your hand!
5. Check that the unit is securely in place.
6. Close the recessed grips with the handle covers
provided in the accessories kit.
The handle covers prevent the penetration of dirt
and insects and can be reordered upon request
from SMA Solar Technology (SMA order number:
45-7202, see Page 62 for contact).
Optional anti-theft protection
To protect the Sunny Mini Central against
theft, the rear face can be secured to the wall
at the bottom using 2 single-use bolts.
The other two holes are spares.
2.
1.

SMA Solar Technology AG Electrical Connection
Installation Guide SMC6-8TL-IEN093231 19
5 Electrical Connection
5.1 Connection Area Overview
5.1.1 View from Below
The following figure shows the assignment of the individual housing openings on the base of the
Sunny Mini Central.
NOTICE!
Electrostatic discharges can damage the Sunny Mini Central!
Internal components of the Sunny Mini Central can be irreparably damaged by static
discharge.
• Ground yourself before you touch a component.
APlug connectors for connecting the PV strings
BSocket for the connection of the Electronic Solar Switch (ESS) DC load disconnection unit
CCable openings for optional communication via RS485 or radio (PG16)
DCable opening for grid connection (AC) (12 mm - 25 mm)
ECable openings for SMA Power Balancer

Electrical Connection SMA Solar Technology AG
20 SMC6-8TL-IEN093231 Installation Guide
5.1.2 View from Inside
The following diagram gives a schematic overview of the various components and connection points
inside the Sunny Mini Central with the cover removed.
P
R
Q
AB C
D
H
OKI
J
NML
G
E
F