SMA SMC 5000A User manual

Sunny Mini Central
SMC 5000A / 6000A
Inverter for three-phase grid feeding
PV plants
Installation Guide Version 1.4 SMC50A_60A-11:SE3706
IME-SMC50A_60A

SMA Technologie AG Table of Contents
Installation Guide SMC50A_60A-11:SE3706 Page 3
Table of Contents
1 Notes on this manual. . . . . . . . . . . . . . . . . . . . . . 7
1.1 Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.2 Target group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.3 Explanation of the symbols used: . . . . . . . . . . . . . . . 7
2 The Sunny Mini Central . . . . . . . . . . . . . . . . . . . . 9
2.1 Appropriate usage . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2 Overview of the device . . . . . . . . . . . . . . . . . . . . . 10
2.3 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.4 Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.5 Special features:. . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.5.1 LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
2.5.2 Sunny Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
2.5.3 OptiCool. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
2.5.4 Electronic Solar Switch (ESS). . . . . . . . . . . . . . . . . . . . . . . . . .17
3 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . 19
3.1 Handling of the Sunny Mini Central . . . . . . . . . . . . 19
3.2 Responsibility of the installer . . . . . . . . . . . . . . . . . 21
4 Mounting the unit. . . . . . . . . . . . . . . . . . . . . . . . 23
4.1 Required tools and materials . . . . . . . . . . . . . . . . . 23
4.2 Selecting an installation site . . . . . . . . . . . . . . . . . . 24
4.3 Mounting the Sunny Mini Central . . . . . . . . . . . . . . 27
5 Electrical Connection . . . . . . . . . . . . . . . . . . . . . 31
5.1 Required tools and materials . . . . . . . . . . . . . . . . . 31
5.2 Connection procedure . . . . . . . . . . . . . . . . . . . . . 32
5.3 Connection of the DC input . . . . . . . . . . . . . . . . . . 32
5.3.1 Prerequisites: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
5.3.2 Connection of the PV strings . . . . . . . . . . . . . . . . . . . . . . . . . .34

Table of Contents SMA Technologie AG
Page 4 SMC50A_60A-11:SE3706 Installation Guide
5.3.3 Reverse Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
5.4 Connecting the AC output . . . . . . . . . . . . . . . . . . . 39
5.4.1 Prerequisites: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
5.4.2 Connecting the AC output. . . . . . . . . . . . . . . . . . . . . . . . . . . .45
5.4.3 The line circuit breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
6 The communications interface . . . . . . . . . . . . . . 51
6.1 Connecting RS232, RS485, Sunny Beam . . . . . . . . 52
6.1.1 Jumper functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
7 Commissoning of the Sunny Mini Central. . . . . . 55
7.1 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
7.1.1 Setting the language of the Sunny Display . . . . . . . . . . . . . . . .58
7.2 LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
8 Hand-over to the operator. . . . . . . . . . . . . . . . . 61
9 Opening and closing of the Sunny Mini Central. 63
9.1 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . 63
9.2 Opening of the Sunny Mini Central . . . . . . . . . . . . 64
9.3 Closing of the Sunny Mini Central . . . . . . . . . . . . . 65
10 Troubleshooting / Problem solving . . . . . . . . . . 67
10.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
10.2 The Red LED Illuminates Continuously . . . . . . . . . . . 68
10.2.1 Ground Fault Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
10.2.2 :Checking the varistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
11 Maintenance and cleaning. . . . . . . . . . . . . . . . . 73
11.1 Checking heat dissipation . . . . . . . . . . . . . . . . . . . 73
11.1.1 Cleaning the fans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
11.1.2 Checking the fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
11.1.3 Cleaning the handle covers. . . . . . . . . . . . . . . . . . . . . . . . . . .77
12 Decomissioning . . . . . . . . . . . . . . . . . . . . . . . . . 79
12.1 Disassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

SMA Technologie AG Table of Contents
Installation Guide SMC50A_60A-11:SE3706 Page 5
12.2 Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
12.3 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
12.4 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
13 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . 81
13.1 Sunny Mini Central SMC 5000A . . . . . . . . . . . . . . 81
13.2 Sunny Mini Central SMC 6000A . . . . . . . . . . . . . . 84
13.3 General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
13.4 Sunny Mini Central operating parameters . . . . . . . . 87
13.4.1 Explanation of the operating parameters . . . . . . . . . . . . . . . . .87
13.4.2 Parameter settings for Germany. . . . . . . . . . . . . . . . . . . . . . . .92
13.4.3 Country-specific parameter settings . . . . . . . . . . . . . . . . . . . . .94
13.4.4 Non-modifiable parameters. . . . . . . . . . . . . . . . . . . . . . . . . . .95
13.5 Explanations and certificates . . . . . . . . . . . . . . . . . 96
13.5.1 CE declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . . .96
13.5.2 SMA grid guard certificate . . . . . . . . . . . . . . . . . . . . . . . . . . .97
14 Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
15 Contact. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

SMA Technologie AG
Seite 6 SMC50A_60A-11:SE3706 Installation Guide

SMA Technologie AG Notes on this manual
Installation Guide SMC50A_60A-11:SE3706 Page 7
1 Notes on this manual
1.1 Validity
These installation instructions cover correct installation and commissioning of type Sun-
ny Mini Central SMC 5000A and SMC 6000A SMA inverters.
1.2 Target group
Only trained electricians approved by the responsible power supply company may in-
stall and commission the inverters. The instructions are based on the assumption that
you, the installer, are familiar with electrical installations and know the corresponding
rules and regulations.
1.3 Explanation of the symbols used:
This symbol indicates a fact that when not observed could result in dama-
ge to components or danger to persons. Please read these sections espe-
cially carefully.
This symbol indicates a fact that is important for optimum operation of the product.
Read these sections carefully to ensure optimum operation of your product.
This symbol identifies an example.

Notes on this manual SMA Technologie AG
Page 8 SMC50A_60A-11:SE3706 Installation Guide

SMA Technologie AG The Sunny Mini Central
Installation Guide SMC50A_60A-11:SE3706 Page 9
2 The Sunny Mini Central
2.1 Appropriate usage
The Sunny Mini Central is a photovoltaic inverter and serves to feed solar energy from
solar modules converted using photovoltaics into a low voltage grid with a rated volta-
ge of 220 to 240 V and 50 Hz or 60 Hz.
Principle of a solar system with a Sunny Mini Central
SMC 5000A or SMC 6000A
Do not use the Sunny Mini Central for purposes other than those described
here. Alternative uses, modifications to the inverter as well as installing
components not recommended or sold by SMA void the warranty and
operating permission.
Photovoltaic
modules
Sunny Mini
Central
L1
L2
L3
Distribution
Electricity grid

The Sunny Mini Central SMA Technologie AG
Page 10 SMC50A_60A-11:SE3706 Installation Guide
2.2 Overview of the device
The following diagram gives a schematic overview of the various components and con-
nection points inside the SunnySunny Mini Central Mini Central SMC 5000A and SMC
6000A with the cover removed:
A
C
B
DE F
G
H
MKI
LJ

SMA Technologie AG The Sunny Mini Central
Installation Guide SMC50A_60A-11:SE3706 Page 11
AVaristors (page 70)
BConnection terminals for communication (page 51)
CSocket for communications Piggy-Back (RS232, RS485, Radio) (page 51)
DJumper for communication (page 51)
ESunny Display (page 56)
FJumper for fan testing (page 75)
GOperating status LEDs (page 59)
HConnection terminals for mains cable (AC) (page 39)
ICable duct for mains cable (AC) (page 39)
JFlat connection for grounding the cable shield for RS232 and RS485 commu-
nications (page 51)
KCable feed-throughs for communication (page 51)
LConnection plug for ESS (page 17)
MPV input plugs (DC) (page 32)

The Sunny Mini Central SMA Technologie AG
Page 12 SMC50A_60A-11:SE3706 Installation Guide
2.3 Dimensions
242 mm
613 mm
468 mm

SMA Technologie AG The Sunny Mini Central
Installation Guide SMC50A_60A-11:SE3706 Page 13
Wall mounting bracket and rear panel
8,5 2,6 2,6 7,8 11, 0 2,2 8,6
7,6
43,3
2,0
1,2
1,0 1,2
2,0
2,2
7,0
48,7
0,2
1,2
5,8 2,5
1,2
5,8
2,5
0,9 (4 x)
Specifications in cm
Holes for optional single-use
screws as theft protection
Holes for wall mount

The Sunny Mini Central SMA Technologie AG
Page 14 SMC50A_60A-11:SE3706 Installation Guide
2.4 Identification
Type plate
You can identify the Sunny Mini Central with the aid of the type plate (see figure be-
low). The type plate is found on the right-hand side of the enclosure (when viewed from
the front). It contains information regarding the device type, serial number, device-spe-
cific key data, the CE mark and SMA contact information.
The following is an example of a Sunny Mini Central SMC 6000A type plate.
www. .de
SMA Technologie AG
HannoverscheStraße1-5
34266 Niestetal, Germany
Hotline: +49 561 - 9522 - 499
Photovoltaik Wechselrichter
Photovoltaic inverter
Typ
Type
Serien-Nummer
Serial Number
DC
DC
DC
DC
Max. Betriebsspannung*
Photovoltaic string inverter*
Betriebsspannungsbereich*
Operating voltage range*
Nenn-Betriebsspannung
Nominal operating voltage
Max. Eingangsstrom
Max. input current
Betriebstemperaturbereich
Operating temperature range
Geräte-Schutzart
Enclosure
AC Nenn-Betriebsspannung
Nominal operating voltage
AC Nenn-Betriebsfrequenz
Nominal operating frequency
AC Nenn-Ausgangsleistung
Nominal output power
AC Max. Ausgangsleistung
Max. output power
AC Max. Ausgangsstrom
Max. output current
AC
* Weitere wichtige Informationen in der Technischen Beschreibung
* For more details see technical description
SMC 6000A 2000133108
600 V
213 - 600 V
270 V
26 A
-25... + 60 °C
IP 65
230 V
50 / 60 Hz
6000 W
6000 W
26 A RMS
VDE 0126
-1-1 (2.06)
Sunny
MiniCentral
Mit selbsttätiger Schaltstelle
With disconnection unit
Lasttrennschalter nach DIN EN 60947-3
Device Type Serial number
Country-specific
standard for the
automatic
disconnection unit
defining the
factory preset
settings of the
device
In case the device is equipped
with the Electronic Solar
Switch (ESS), this is indecated
with the text above.

SMA Technologie AG The Sunny Mini Central
Installation Guide SMC50A_60A-11:SE3706 Page 15
2.5 Special features:
2.5.1 LEDs
The Sunny Mini Central is fitted with an operating status
indicator, the three LEDs on the cover at the front, as
standard. The are green, yellow and red and can indi-
cate the operating status of the Sunny Mini Central via
various blink codes. A detailed explanation of the dif-
ferent blink codes can be found in the operating manu-
al of the Sunny Mini Central.
2.5.2 Sunny Display
The Sunny Mini Central is equipped with a display in
the lid of the case as standard. The illumination of the
Sunny Display is activated by tapping on the lid of the
case. Tapping again switches the Sunny Display to the
next message. The display continues after 5 seconds if
it is not tapped. It shows a series of messages one after
the other, which describe the yield values and the ope-
rating status. A detailed explanation of the different
messages can be found in the operating manual of the
Sunny Mini Central. After two minutes, the illumination
of the Sunny Display switches itself off automatically.
The Sunny Display can be set to the languages Ger-
man, English, French and Spanish (see chapter 7.1.1
„Setting the language of the Sunny Display” (Page
58)).
(Green)
(Red)
(Yellow)

The Sunny Mini Central SMA Technologie AG
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2.5.3 OptiCool
The Sunny Mini Central comes equipped with the patented Opti-
Cool dual-chamber cooling system. At the same time, the inver-
ter's enclosure is integrated into the temperature management
and now serves not only to incorporate and protect the internal
components but also as a cool air and heat distributor.
As the central component of passive heat abstraction, the heat
sink is integrated into the enclosure, thus dividing it into two cham-
bers.
The front chamber containing the electronic components is es-
pecially sealed and thus protected against infiltration by water,
dust or dirt. In addition, the heat sink, functioning as a partition
wall, provides enough space for the installation of the heat-pro-
ducing components.
The rear housing chamber contains the components which de-
velop high amounts of heat, depending on their function, such
as chokes, which are especially enclosed and are, thus, unsus-
ceptible to external influences.
Two active cooling units are affixed to the underside of the se-
cond chamber which have been specially designed for this pur-
pose. According to the temperature of the power conductor
and the inductive components, they switch themselves on auto-
matically and vary the speed as necessary for an even heat ba-
lance within the device.
The air current provided by the fan is particularly well chan-
neled via a current tunnel and expels the waste heat both from
the heat sink and the other components in this area.
OptiCool makes for low component temperatures throughout the inverter. This leads to
high levels of reliability and excellent performance behaviour even with high ambient
temperatures which both impact considerably on the economic viability of the inverter
and, therefore, the PV system as a whole.

SMA Technologie AG The Sunny Mini Central
Installation Guide SMC50A_60A-11:SE3706 Page 17
2.5.4 Electronic Solar Switch (ESS)
The Sunny Mini Central can be equipped with the "ESS" in-
tegrated electronic DC circuit breaker, which fulfills all re-
quirements for the installation standard for photovoltaic
systems (VDE 0100-7-712) valid from June 2006. To ac-
cess the DC input plugs in order to disconnect the PV gene-
rator from the inverter, you only need to pull on a grip
handle on the base of the inverter, which immediately inter-
rupts the current flow on the DC side. At the same time, this
activates an electronic switch inside the device. This switch
reliably prevents the arcing that usually occurs when sepa-
rating the inverter from the PV generator. But the inverter is
not de-energized yet! In order isolate the PV generator completely, the DC input plugs
have also to be removed. When closed, the ESS does not cause line losses. You can
find further information on the ESS in the enclosed instruction manual of the ESS, if the
Sunny Mini Central is equipped with one. The ESS is only available ex works and can-
not be retrofitted.

The Sunny Mini Central SMA Technologie AG
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SMA Technologie AG Safety instructions
Installation Guide SMC50A_60A-11:SE3706 Page 19
3 Safety instructions
3.1 Handling of the Sunny Mini Central
The Sunny Mini Central has a weight of approx. 63 kg. Min. two people
must carry the unit or a suitable transport trolley must be used. Steel-cap-
ped shoes must be worn.
Follow the instructions in the pictograms, signs and labels on the inverter
and ensure that they are legible at all times.
Do not install the Sunny Mini Central
• on inflammable materials,
• in areas where there are easily inflammable substances,
• in potentially explosive areas!
Check the system design using the "Sunny Design" design program
(www.SMA.de) or by calling the Sunny Boy Hotline before installing the-
Sunny Mini Central. Overvoltages may lead to the destruction of the Sun-
ny Mini Central.
Open and close the Sunny Mini Central as described in Chapter 9 „Ope-
ning and closing of the Sunny Mini Central” (Page 63) only and follow the
safety instructions there.
Work on the Sunny Mini Central with the cover removed must be carried
out by a qualified electrician! High contact voltages are present in the de-
vice. Before working on the Sunny Mini Central with the cover removed,
the AC and DC voltages must be disconnected from the Sunny Mini Central
and the capacitors must be discharged (wait for 20 minutes after isolating
the AC and DC voltage).
When working on the Sunny Mini Central and handling the components,
remember to observe all ESD safety regulations. Electronic components
are susceptible to electrostatic charge. Discharge any electrostatic charge
by touching the grounded enclosure before handling any electronic com-
ponent.

Safety instructions SMA Technologie AG
Page 20 SMC50A_60A-11:SE3706 Installation Guide
General safety rules for working on photovoltaic systems:
The temperature of individual parts of the case and of components inside
the Sunny Mini Central can reach over 60°C. Touching could result in
burns!
Avoid contact with the PV modules when they are running, as a minimal
displacement current could flow and cause a secondary accident due to
shock. Therefore, maintenance work may only be performed on the solar
generator when it is disconnected. This can be done by activating the Elec-
tronic Solar Switch (ESS) for example. Disconnecting the inverter from the
mains grid is not sufficient.
1. Disconnecting the device
Before you start to work on the unit, disconnect all wires which could
carry voltage to the area you are working on!
2. Ensure that the device cannot be reconnected.
Prevent the device being reconnected by marking it, blocking or lo-
cking it!
3. Ensure that the unit is voltage free.
Use a voltage tester to ensure that the unit is voltage free. Ensure that
all poles of the unit are free of voltage.