SMA Sunny Mini Central 7000HV, 7000HV-11 PV Inverter Installation Guide

PV Inverter

SUNNY MINI CENTRAL 7000HV

Installation Guide

SMC70HV-IEN093740 | IME-SMC70HV | Version 4.0

EN

SMA Solar Technology AG

Table of Contents

Table of Contents

3

3.1

3.2

4

4.1

4.2

5.3

5.4

5.4.1

5.4.2

5.4.3

5.5

5

5.1

5.1.1

5.1.2

5.2

5.2.1

1

1.1

1.2

1.3

1.4

2

2.1

2.2

Notes on this Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Target Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Additional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Symbols Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Appropriate Usage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Unpacking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Identifying the Sunny Mini Central . . . . . . . . . . . . . . . . . . . . . . 12

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Selecting the Mounting Location. . . . . . . . . . . . . . . . . . . . . . . . 13

Mounting the Sunny Mini Central. . . . . . . . . . . . . . . . . . . . . . . 15

Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Overview of the Connection Area . . . . . . . . . . . . . . . . . . . . . . 18

View from Below . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

View from Inside . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Connection to the public grid (AC). . . . . . . . . . . . . . . . . . . . . . 20

Setting the Display Language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

PV generator connection (DC) . . . . . . . . . . . . . . . . . . . . . . . . . 26

Connection of the SMA Power Balancer . . . . . . . . . . . . . . . . . 29

Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Functionality Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Communication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Installation Guide SMC70HV-IEN093740 3

Table of Contents


4

6

6.1

6.2

7

7.1

7.2

5.6

5.7

5.7.1

5.7.2

5.7.3

5.7.4

5.7.5

5.7.6

8

8.1

8.1.1

8.1.2

8.1.3

8.2

Setting the installation country . . . . . . . . . . . . . . . . . . . . . . . . . 37

Reactive power and grid management. . . . . . . . . . . . . . . . . . . 37

Setting the shift factor ϕ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Frequency dependent active power limitation P(f) . . . . . . . . . . . . . . . . . . . . 39

Grid safety management via external active power limitation . . . . . . . . . . . 40

Soft start of SMC 7000HV-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Phase assignment of SMC 7000HV-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Additional country parameters of SMC 7000HV-11 . . . . . . . . . . . . . . . . . . 42

Commissioning the Sunny Mini Central . . . . . . . . . . . . . . 43

Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

LED Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Opening and Closing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Opening the Sunny Mini Central . . . . . . . . . . . . . . . . . . . . . . . 49

Closing the Sunny Mini Central . . . . . . . . . . . . . . . . . . . . . . . . 51

Maintenance and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . 53

Checking Heat Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Cleaning the Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Checking the fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Cleaning the air grills . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Checking the Electronic Solar Switch (ESS) for wear . . . . . . . . 56

9

9.1

9.1.1

9.2

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

The red LED is continuously on . . . . . . . . . . . . . . . . . . . . . . . . . 57

Checking the PV Generator for Ground Fault. . . . . . . . . . . . . . . . . . . . . . . . 57

Checking the Function of the Varistors . . . . . . . . . . . . . . . . . . . 59

10 Decommissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

10.1

Dismantling the Sunny Mini Central . . . . . . . . . . . . . . . . . . . . . 61

10.2

Packing the Sunny Mini Central . . . . . . . . . . . . . . . . . . . . . . . . 62

10.3

Storing the Sunny Mini Central. . . . . . . . . . . . . . . . . . . . . . . . . 62

SMC70HV-IEN093740 Installation Guide


Table of Contents

10.4

Disposing of the Sunny Mini Central . . . . . . . . . . . . . . . . . . . . 62

11 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

11.1

SMC 7000HV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

11.2

SMC 7000HV-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

12

13

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70


Table of Contents


6 SMC70HV-IEN093740 Installation Guide


Notes on this Guide

1 Notes on this Guide

This installation guide describes the mounting, installation, commissioning and servicing of the SMA inverters of the type Sunny Mini Central 7000HV (SMC 7000HV and SMC 7000HV-11). Store this guide where it can be accessed at all times.

1.1 Validity

This guide is valid for the Sunny Mini Central 7000HV.

1.2 Target Group

This guide is for qualified personnel. The tasks described in this guide may only be performed by qualified personnel.

1.3 Additional Information

You will find further information on special topics such as designing a line circuit breaker or the description of the operating parameters in the download area at www.SMA.de/en.

Refer to the user manual for detailed information on troubleshooting and operating the Sunny Mini

Central.


Notes on this Guide


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.



Security

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.

Operating principle of a PV plant with Sunny Mini Central.

The Sunny Mini Central may only be operated with PV generators (modules and cabling) of protection class II. Do not connect any sources of energy other than PV modules to the Sunny Mini

Central.

When designing 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. The manufacturer of the PV modules must have approved the modules for use with this Sunny Mini Central. You must also ensure that all measures recommended by the module manufacturer for long-term maintenance of the module properties are taken (see also Technical Information "Module Technology", in the download area of www.SMA.de/en).

Do not use the Sunny Mini Central for purposes other than those described here. Alternative uses, modifications to the Sunny Mini Central or the installation of components not expressly recommended or sold by the manufacturer void the warranty claims and operation permission.


Security


Certified Countries

The Sunny Mini Central 7000HV (with according configuration) fulfill the requirements specified in the following standards and directives (dated: September/2009):

• VDE 0126-1-1 (02.2006)

• RD 1663/2000 (2000) a)

• G83/1 (09.2003)

• E 2750 (11.2004)

• PPC (06.2006)

• C10/C11 (08.2003)

• IEC-utility Meeting 216 a) In case of restrictions in certain regions contact the SMA Serviceline.

SMA Solar Technology can preset special grid parameters for other countries / installation locations according to customer request, after evaluation by SMA Solar Technology. You can later make modifications yourself by changing software parameters with respective communication products

(e.g. Sunny Data Control). A personal password is required for this, which you can obtain from the

Serviceline upon request.



Security

2.2 Safety Precautions

DANGER!

Danger to life due to high voltages in the Sunny Mini Central!

• All work on the Sunny Mini Central must only be carried out by qualified personnel.

CAUTION!

Parts of the enclosure can get hot - Risk of burn injuries!

• Do not touch enclosure during operation.

• Only touch lid during operation.

NOTICE!

Dust and water in 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.

Proceed as follows in order to establish enclosure rating IP65 in case of temporary decommissioning:

• Unplug all DC plug connectors and seal them with the protecting caps provided.

• Attach the Electronic Solar Switch again.

Grounding the PV generator

Comply with the local requirements for grounding the modules and the PV generator. SMA

Solar Technology recommends connecting and grounding the generator frame and other electricity conducting surfaces in such a way that there is continuous conduction and grounding, in order to ensure maximum protection for systems and persons.


Unpacking


3 Unpacking

3.1 Scope of delivery

Check the delivery for completeness and for visible external damage, such as cracks in the enclosure or in the display. Please contact your dealer if something is damaged or missing.

J

K

I

H

L

F

G

D

E

B

C

Object Quantity Description

A

1 Sunny Mini Central

2

1

Air grills (1x right / 1x left)

Wall mounting bracket

1

1

1

1

Installation guide

User manual

Set of documents with explanations and certificates

DC circuit breaker Electronic Solar Switch (ESS)

M

N

O

1

2

1

1

2

1

2

1

Cable gland for AC connection (M32)

Counter nut for AC connection cable gland

Clamping clip for additional grounding

Washers: 1 x for lid screws (replacement), 1 x for grounding terminal

Cylinder head screws: (M6x16) 1 x for lid (replacement),

1 x for ground connection cable terminal

Jumper for fan test

Cylinder head screws (M6 x 8) for securing the Sunny Mini Central to the wall mounting bracket

Silicone tube for insulating the SMA Power Balancer connection cable

3.2 Identifying the Sunny Mini Central

You can identify the Sunny Mini Central using the type plate. The type plate is on the right side of the enclosure. The serial number (Serial No.) and the type (Type / Model) of the product, as well as device-specific characteristics are specified on the type plate.



Installation

4 Installation

4.1 Selecting the Mounting Location

DANGER!

Danger to life due to 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 near highly flammable materials.

• Do not install the Sunny Mini Central in potentially explosive areas.

CAUTION!

Parts of the enclosure can get hot - Risk of burn injuries!

• Mount the Sunny Mini Central in such a way that it cannot be touched inadvertently!

CAUTION!

Risk of injury due to the heavy weight of the Sunny Mini Central!

• Take the weight of the Sunny Mini Central of 65 kg into account when mounting.

Observe the following conditions during installation:

• The installation method and mounting location must be suitable for the weight and dimensions

of the Sunny Mini Central (see section 11 "Technical Data" (page 63)).

• Mount on a solid surface.

• The mounting location must be accessible at all times.

• Vertical installation or tilted backwards by max. 45°.

• The connection area must point downwards.

• Never install the device with a forward tilt.

• Do not install horizontally.

• Install at eye level to allow operating status to be read at all times.


Installation


• The ambient temperature should be below 40 °C to ensure optimal operation.

• Do not expose the Sunny Mini Central to direct sunlight, in order to avoid power reduction due to excessive heating.

• In a living area, do not mount the unit on plasterboard walls (or similar) in order to avoid audible vibrations.

• The Sunny Mini Central can make noises when in use which can be regarded as a nuisance when installed in a living area.

• Observe the minimum clearances to walls, other inverters or objects as shown in the diagram in order to guarantee sufficient heat dissipation and to have enough space for removing the Electronic

Solar Switch.

Multiple Sunny Mini Central devices installed in areas with high ambient temperatures

The individual Sunny Mini Central devices must be far enough apart to ensure that the individual Sunny Mini Central devices do not take in the cooling air of the neighboring unit.

If necessary, increase the clearances and make sure there is enough ventilation to ensure sufficient cooling of the Sunny Mini Central inverters.



4.2 Mounting the Sunny Mini Central

1. Mark the position of the drill holes using the wall mounting bracket and drill the holes.

Use 2 to 4 of the 6 holes in the middle.

Installation


Installation


CAUTION!

Risk of injury due to the heavy weight of the Sunny Mini Central!

The Sunny Mini Central weighs 65 kg.

• Attach the wall mounting bracket with the corresponding mounting material

(depending on the surface).

• Use the side handles (above and below) or a steel rod (maximum diameter of

30 mm) for transport and mounting. The rod must be pushed through the enclosure openings.

2. Secure the wall mounting bracket to the wall using appropriate screws and washers.

3. Attach the Sunny Mini Central using the mounting hole on the enclosure rear panel to the wall mounting bracket.



4. Screw the Sunny Mini Central onto the wall mounting bracket on both sides using the screws

(M6x8) provided.

Only tighten the screws hand-tight.

5. Make sure it is securely in place.

6. Close the recessed grips with the air grills provided.

The air grills are marked "rechts/right" and

"links/left" on the interior for proper assignment.

The air grills prevent dirt and insects from entering the device and if necessary, can be reordered from

SMA Solar Technology (see section

12 "Accessories" (page 69)).

Optional Theft Protection

To protect the Sunny Mini Central 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.

Installation


Electrical Connection


5 Electrical Connection

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 touching a component.

5.1 Overview of the Connection Area

5.1.1 View from Below

The following figure shows the assignment of the individual enclosure openings on the bottom of the

Sunny Mini Central.

C

D

E

Object

A

B

Description

Plug connectors for connecting the PV strings

Socket for the connection of the Electronic Solar Switch (ESS) DC load disconnection unit

Cable feed-throughs for optional communication via RS485 or radio (PG16)

Cable feed-through for grid connection (AC) (12 - 25 mm)

Cable feed-throughs for SMA Power Balancer




5.1.2 View from Inside

The following diagram gives a schematic overview of the various components and connection areas inside the Sunny Mini Central with the lid removed.

C

D

E

Object

A

B

Description

Jumper for communication (Page 37)

Display (Page 43)

Jumper for testing the fans (Page 54)

Operating status LEDs (Page 43)

Jumper for SMA Power Balancer (Page 29)




K

L

M

N

H

I

J

O

P

Q

R

Object

F

G

Description

Connections terminals for SMA Power Balancer (Page 29)

Male connector for grounding the cable shield of the SMA Power Balancer connection

cable (Page 29)

Connection terminals for mains cable (AC) (Page 20)

Cable feed-throughs for SMA Power Balancer (Page 29)

Cable feed-through for mains cable (AC) ((Page 20)

Male connector for grounding the cable shield for communication (Page 37)

Cable feed-throughs for communication (Page 37)

Screwing device for shield clamp for communication cable (Page 37)

Connection socket for "Electronic Solar Switch" (ESS) DC load disconnection unit

(Page 26)

PV input plug (DC) (Page 26)

Varistors (Page 59)

Connection terminals for communication (Page 37)

Slot for communication interface (Page 37)

5.2 Connection to the public grid (AC)

Utility operator connection requirements

Comply with the connection requirements of your utility operator.

Cable Sizing

The conductor cross-section should be dimensioned in a way that output losses do not exceed 1 % at nominal power. Use "Sunny Design" (www.SMA.de/en) for this.

The maximum cable lengths relative to the conductor cross-section are shown in the following table.

Conductor cross-section

10.0 mm²

16.0 mm²

Max. cable length

22.2 m

35.5 m

When selecting the type of cable/cable cross-section in accordance with the routing method, observe the following requirements:

• ambient temperature,

• routing method,

• UV resistance.

Cut line losses in half

If 3 Sunny Mini Central inverters with symmetrical feeding are combined to form a threephase 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


B

C

Position

A

Designation

External diameter

Conductor cross-section

Strip insulation

Value

12 ... 25 mm max. 16 mm² approx. 18 mm

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. See the technical data for the maximal permissible rating

(Page 63).

Detailed information and examples for the rating of a line 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 line circuit breaker, the protective function of the line circuit breaker is no longer guaranteed. It can result in a cable fire or the destruction of the inverter.

• Never connect several inverters to a single line circuit breaker.

• Comply with the maximum permissible fuse protection of the inverter when selecting the line circuit breaker.

NOTICE!

Damage to the Sunny Mini Central by using screw type fuse elements as load disconnection unit!

A screw type fuse element, e.g. D system (Diazed) 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 element is only used as cable protection.

When disconnecting under load using a screw type fuse element, the Sunny Mini Central can be damaged.

• Use only a load disconnecting switch or a line circuit breaker as load disconnecting unit.




DANGER!

Danger to life due to fire!

When a generator (Sunny Mini Central) and a consumer are connected to the same line circuit breaker, the protective function of the line circuit breaker is no longer guaranteed.

The current from the Sunny Mini Central and the grid can add up to overcurrent which is not detected by the line circuit breaker.

• Never connect loads between the Sunny

Mini Central and the line circuit breaker without protection.

• Always install separate fuses for loads.

Connecting the Sunny Mini Central to the public grid (AC):

1. Check the grid voltage and compare it with "V

AC

" on the type plate.

The exact operating range of the Sunny Mini Central is specified in the operation parameters.

These can be uploaded via a communication component or can be ordered from SMA Solar

Technology.

2. Switch off the line circuit breaker and prevent it from being reactivated.

3. Loosen all 6 screws and remove the lid.

4. Remove the taping of the AC cable feed-through (see “E” on Page 18).

5. Insert the AC screw clamp into the cable opening from the outside and tighten it with the counter nut from the inside.

6. Pull the cable through.

7. Connect L, N and the protective earth (PE) to the terminal blocks according to the label.

To do this, the insulated PE conductor must be 5 mm longer than the insulated L and N conductors!

L and N must not be swapped!

8. Lock the threaded joint on the cable feed-through securely.



9. Secure the lid with 6 screws and the corresponding washers.

Tighten the screws with 6 Nm torque in the order shown on the right hand side. The toothing of the washers must face toward the lid.

The Sunny Mini Central packing list includes an additional screw and washer as spares.


DANGER!

Danger to life due to live lid!

The grounding of the enclosure lid is ensured by the toothed washers.

• Fasten the washers for all 6 screws with the toothing facing toward the lid.

DANGER!


• Do not switch on the line circuit breaker until the Sunny Mini Central is securely closed and the PV generator has been connected.




Additional Grounding of the Enclosure

If a second protective conductor connection is required in the country of installation (e.g. Switzerland), you can also ground the Sunny Mini Central via a second protective conductor at the connection terminal of the enclosure.

Procedure

1. Insert the stripped grounding cable (D) under the clamping clip (C) (max. cross-section 16 mm²).

2. Secure the clamping clip with the screw (A) and washer (B).

The toothing of the washer must face toward the terminal clamp.

You can ground multiple Sunny Mini Central devices as shown in the diagram below:




5.2.1 Setting the Display Language

You can set the language of the display using the switches on the underside of the display assemblies inside the Sunny Mini Central.

Proceed as follows to do so:

1. Open the Sunny Mini Central as described in section 7.1 "Opening the Sunny Mini Central"

(page 49).

2. Set the switches for the required language, as shown below.

Language

German

English

French

Spanish

Switch S2

B

B

A

A

Switch S1

B

A

B

A

3. Close the Sunny Mini Central as described in

section 7.2 "Closing the Sunny Mini Central"

(page 51).




5.3 PV generator connection (DC)

Use of Adaptors

Adaptors (branch connectors) are not to be visible or freely accessible in the immediate surrounding of the Sunny Mini Central.

• The DC current flow may not be interrupted via adaptors.

• Always disconnect the current flow first via the Electronic Solar Switch.

• Requirements for the modules of the connected strings:

– Same type

– Same number

– Identical alignment

– Identical tilt

• The connection cables of the PV modules must be equipped with plug connectors so that the

Sunny Mini Central's 8 DC plug connectors can be connected to them.

A pre-assembled set for connecting the free cable ends of a string is available as optional

accessory from SMA Solar Technology (see section 12 "Accessories" (page 69)).

• The following limit values at the DC input of the Sunny Mini Central may not be exceeded:

maximum input voltage

800 V (DC)

maximum input current

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 connector is overloaded, an electric arc may occur and there is a fire risk.

• Ensure that the input current for each string does not exceed the maximum flow current of the plug connectors used.




Connecting the PV Generator (DC)

DANGER!


• Before connecting the PV generator, ensure that the line circuit breaker is switched off.

1. Pull the Electronic Solar Switch downwards, slightly towards the wall.

NOTICE!

Excessive voltages can destroy the measuring device!

• Only use measuring devices with a DC input voltage range up to at least 800 V.

2. Check the connection cables of the PV modules for correct polarity and that the maximum input voltage of the Sunny Mini Central is not exceeded.

Check the system design if the open circuit voltage of the PV modules is less than 10 % below the maximum input voltage of the Sunny Mini Central.

NOTICE!

The Sunny Mini Central could be irreparably damaged by overvoltage!

If the voltage of the PV modules exceeds the maximum input voltage of the Sunny Mini

Central, it can be destroyed by the overvoltage.

All warranty claims become void.

• Do not connect strings to the Sunny Mini Central with open circuit voltage greater than the maximum input voltage of the Sunny Mini Central.

• Check the system design.

3. Check the strings for ground faults, as described in section 9.1 "The red LED is continuously on"

(page 57).



4. Connect the DC plug connectors.

5. Close unused DC input sockets with the sealing caps provided.


6. Check the Electronic Solar Switch for wear, as

described in section 8.2 , and attach it until it

audibly locks into place.

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 not plugged correctly, the Electronic Solar Switch can be damaged by high voltages.

• Press the handle firmly into place on the socket of the Electronic Solar Switch until it audibly locks into place.

• Make sure it is securely in place.

☑ You can now commission the Sunny Mini Central as described in section 6 "Commissioning the

Sunny Mini Central" (page 43). The following connection options are optional.




5.4 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 three 3 Sunny Mini Central to a three-phase feed-in system.

Each of the 3 Sunny Mini Central devices in a group must be 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 Central devices are to react if there is a device fault 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 grid 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.

5.4.1 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 SMA communication component. You will find options available for this in the Sunny Mini Central user manual or on the

SMA website www.SMA.de/en.

Request a personal SMA Grid Guard password from SMA Solar Technology so that you can modify

the "PowerBalancer" parameter (contact: see Page 70).




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 grid operator!

• FaultGuard

This operating mode allows to implement a three-phase grid voltage monitoring which also reacts to device failures.

If one of the 3 Sunny Mini Central inverters indicates a grid voltage fault and stops feeding in, the other two also disconnect from the grid immediately.

If one of the 3 Sunny Mini Central inverters indicates a device disturbance and stops feeding in, the other two inverters also disconnect from the grid 5 minutes later.




• PhaseGuard

This operating mode allows to implement a three-phase grid voltage monitoring.

If one of the 3 Sunny Mini Central inverters indicates a grid voltage fault and stops feeding in, the other two also disconnect from the grid automatically.

If one of the 3 Sunny Mini Central inverters indicates a device disturbance and stops feeding in, the other two inverters are not affected and continue to feed in at full power.




• Off

The SMA Power Balancer is deactivated (factory setting).

In the event of a device fault or grid voltage fault at a Sunny Mini Central, only this Sunny Mini

Central is disconnected from the grid and the other two devices continue to run at an undiminished power level.

• PowerGuard

This setting can be selected, if the entire PV plant consists of three 3 Sunny Mini Central inverters only and in case of a failure the unbalanced load shall be limited to 5 kVA over a 10-minute average.

Unbalanced load limitation in case of SMC 7000HV-IT

(applies exclusively to Italy)

In case of the SMC 7000HV-IT-type Sunny Mini Central the unbalanced load is limited to

6 kVA.

If one of the 3 Sunny Mini Central inverters indicates a grid voltage fault or device fault and stops feeding in, the other two automatically limit their power to 5 kVA over a 10 minute average.




5.4.2 cabling

For cabling up 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

C

D

Position

A

B

Designation

Flexible insulation

Shielding

Twisted pair 2 (2 x 0.25 mm²)

Twisted pair 1 (2 x 0.25 mm²)

Proceed as follows for the cabling:


(page 49).

2. Lead the cable in each Sunny Mini Central.

Using one of the two enclosure openings (A) on the bottom right hand side, draw the cable along the cable route (B) as far as the terminal block (D).




E

F

C

D

Position

A

B

Description

Enclosure feed-throughs in the base of the Sunny Mini Central.

Silicone tube / cable route

Male connector for grounding the cable shield

Screw terminals for connecting the wires

Jumper slots

Screw terminals for the wire jumper

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 Sunny Mini Central 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. Ground the cable shield in each Sunny Mini Central to the PE connector (C).

4. In each Sunny Mini Central, attach cable end sleeves to the positive and negative conductors and connect them to the positive and negative poles on the terminal block (D).

5. In order to connect the three Sunny Mini Central inverters together, the positive and negative conductors from the two outer Sunny Mini Central inverters must be connected to the terminal block of the middle Sunny Mini Central.

The cable length between two Sunny Mini Central inverters may be a maximum of 300 m.




6. In the middle Sunny Mini Central (with two insulated conductors for each terminal), insert one of the provided jumpers into the lowest of the three slots as depicted on the right.

Alternatively, you can also bridge the A and B screw terminals at this Sunny Mini Central with a wire jumper.

7. Measure the resistance between the terminal block's positive and negative poles in this Sunny

Mini Central.

If the resistance is approximately 27.8 kOhms

(+/370 Ohms), the SMA Power Balancer has been connected correctly. Otherwise, check the cabling.

8. Close all Sunny Mini Central inverters as described

in section 7.2 "Closing the Sunny Mini Central"

(page 51).

Connection with one Sunny Mini Central 9000TL, 10000TL or 11000TL

In order to be able to connect the SMA Power Balancer with a Sunny Mini Central 9000TL,

10000TL or 11000TL, the Sunny Mini Central 7000HV must be equipped with a special connection plug. Three Sunny Mini Central inverters are then connected together with a special connection cable.

You can order the connection plug and the connection cable from SMA Solar Technology

or your dealer. Section 12 "Accessories" (page 69) contains a list of the order numbers.




5.4.3 Functionality Test

To test whether the SMA Power Balancer operates correctly, proceed as follows:

1. Select the "PhaseGuard" setting of the "PowerBalancer" parameter for all 3 Sunny Mini Central inverters.

2. Check whether all Sunny Mini Central inverters in the group are feeding the grid normally (green LED glows continually or display message shown to the right). If this is the case, proceed to step 3.

If all Sunny Mini Central inverters in this group show the display message pictured to the opposite:

Check the installation of the SMA Power Balancer and contact SMA Solar Technology, if necessary.

3. Switch off the line circuit breaker for one of the three Sunny Mini Central inverters.

4. The Sunny Mini Central with a deactivated line circuit breaker then indicates a grid voltage fault with the display message shown to the right

("Bfr" and "Srr" are irrelevant).

5. The other two Sunny Mini Central inverters then also disconnect themselves from the grid with the display message shown to the right. Both devices subsequently switch to "Balanced" mode.

6. If the Sunny Mini Central inverters react as described above, the functionality test has been completed successfully. Otherwise, check the configuration.

7. If necessary, reset the "PowerBalancer" parameter on all Sunny Mini Central inverters to the desired setting.

8. Switch on the line circuit breaker again.




5.5 Communication

The Sunny Mini Central is equipped with a slot for communication interfaces in order to communicate with special data acquisition devices (e.g. Sunny WebBox) or a PC with corresponding software

(e.g. Sunny Data Control).

See the respective communication interface manual for a detailed wiring diagram and an installation description for the interface.

The Power Reducer Box by SMA Solar Technology allows active power to be restricted on all Sunny

Mini Central inverters. Also, the reactive power specification can be controlled in the Sunny Mini

Central of type SMC 7000HV-11. For detailed information on the Power Reducer Box, see its technical description and the technical information on "Grid safety management" in the download area under www.SMA.de/en.

5.6 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 device (e.g. Sunny WebBox) or a PC with appropriate software (e.g. Sunny Data Control). However, this is only required if the Sunny Mini

Central was originally ordered for another country. The standard to which the Sunny Mini Central was set upon delivery is specified on the type plate.

5.7 Reactive power and grid management

Sunny Mini Central inverters of type SMC 7000HV-11 are reactive power-compatible inverters and can feed in reactive power by entering a shift factor (cos ϕ). These inverters are also equipped with advanced grid management functions for output control, which can be activated and configured in accordance with the requirements of the utility grid operator.

The configuration parameters are protected by the SMA Grid Guard password. However, they can be accessed at the installer level. In order to configure the parameters, you require an

SMA Grid Guard password and the installer password, which SMA Solar Technology will provide to you on request.

With the procedures described below, you can select different settings in which additional configuration parameters can be set.




5.7.1 Setting the shift factor ϕ

The "Q-VArMod" parameter allows you to select the reactive power process for the Sunny Mini

Central inverters of type SMC 7000HV-11. 3 settings can be selected.

The shift factor can be specified (cos ϕ) by setting a software parameter for the corresponding device

(Mode 1) or sent to multiple devices via communication with the Sunny WebBox combined with the

Power Reducer Box (Mode 2).

The factory setting for the shift factor is cos ϕ = 1 (Mode 1).

Processes and setting parameters

Default settings

In the table below, default settings are marked with *.

Procedure Setting

Q-VArMod

PFCnst*

PFCtlCom

Off

Configuration options for "PFCnst"

Description

Mode 1: Constant shift factor cos ϕ.

Mode 2: Shift factor is transferred via communication with Power Reducer Box.

The process is deactivated.

Setting

PFCnst

Parameters Description

PF-PF Shift factor specification cos ϕ

(Mode 1).

PF-Excitation Type of excitation of the shift factor cos ϕ (Mode 1).

Value range Default

0.8 ... 1 1

Underexcited

Overexcited

Underexcited




5.7.2 Frequency dependent active power limitation P(f)

Activating this function enables active power limitation P depending on the grid frequency f

AC

. The process used complies with the Medium-Voltage Directive valid in Germany. However, the settings can also be adjusted for the requirements of other countries or utility grid operators via software parameters.

The "P-WCtlHzMod" parameter allows you to select the frequency-dependent active power limitation

P(f). 2 settings can be selected.

This process is deactivated on delivery.





P-WCtlHzMod

Off*

On

Description


The active power is throttled in accordance with the characteristic curve.

Configuration options for "On"

Setting

On


P-HzStr Start frequency

(nominal frequency + setting) for active power limitation.

P-WGra

P-HzStop

Steepness of the effective power limitation (gradient).

Frequency

(nominal frequency + setting) for resetting the active power limitation.

Value range

0 ... 5 Hz

Default

0.20 Hz

10 ... 100 %/Hz 40 %/Hz

0 ... 5 Hz 0.05 Hz




5.7.3 Grid safety management via external active power limitation

The "P-WMod" parameter allows you to select the active power process. 3 settings can be selected.

The maximum possible AC active power can be set externally for Sunny Mini Central inverters via communication (WebBox with Power Reducer Box) (e.g. via a ripple control signal). This process is activated for all devices on delivery. The active power is restricted via the Power Reducer Box

(Mode 1).

A fixed limitation of the active power of an individual inverter can also be set, however external specification via the Power Reducer Box is then no longer possible.




Procedure

P-WMod

Setting

Off

WCnst

WCtlCom*

Description


Limitation of the maximum active power of the inverter

(Mode 2).

Limitation of the maximum active power via communication with a Power Reducer Box (Mode 1).

Configuration options for "WCnst"

Setting

WCnst


P-W Limitation of the maximum active power.

Value range

0 ... 7070 W

Default

7000 W




5.7.4 Soft start of SMC 7000HV-11

Sunny Mini Central inverters of type SMC 7000HV-11 are equipped with a soft start function. After reactivation, for example after a voltage fault or frequency fault, the soft start function increases the output of active power gradually (gradient function). The performance increases 10 % of the nominal power per minute.

This process is deactivated on delivery.




WGraReconEna 0 *

1

Description

Soft start is deactivated.

Soft start is activated.

5.7.5 Phase assignment of SMC 7000HV-11

The "Phase" parameter allows you to assign an L1, L2 or L3 phase to the inverter. This function allows a communication command to be sent only to the inverters with the specific phase setting when using the Power Reducer Box.



Parameters

Phase

Setting

- - - - - *

L1

L2

L3

Description

This setting means that no active setting was selected. The inverter reacts as in setting "L1".

The inverter is assigned to phase L1.






5.7.6 Additional country parameters of SMC 7000HV-11

Requirements for the setting

Set the installation country as described in section 5.6 "Setting the installation country"

(page 37) before setting the country parameters described here.

The deactivation criteria (voltage, frequency, impedance) are specified via country parameters for all

Sunny Mini Central inverters.

The Sunny Mini Central inverters of type SMC 7000HV-11 have an additional default country parameter "MVtgDirective". These parameters expand the deactivation limits of the inverter for voltage and frequency to a maximum / minimum. This country setting may only be selected if the plant or inverter is operated with an external three-phase decoupling protection, which disconnects the

Sunny Mini Central from the grid automatically 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 this external decoupling protection, the Sunny Mini Central does not disconnect from the grid when the standard requirements are exceeded.

• Install external three-phase decoupling protection.



Commissioning the Sunny Mini Central

6 Commissioning the Sunny Mini Central

1. Check the following requirements before commissioning:

– Device is securely in place.

– Correct connection of the AC (grid) cable.

– Full connection of the DC cables (PV strings).

– Unused DC plug connectors on the underside of the enclosure are sealed with protecting caps.

– Securely fastened enclosure lid.

– Electronic Solar Switch is securely plugged.

– Correct layout of the line circuit breaker.

2. Switch on the line circuit breaker.

☑ The green LED is glowing or blinking if there is enough radiation: commissioning has been successful.

Or:

☑ The red or yellow LED is glowing or blinking: there has been an error. Proceed to step 3.

A Green LED

B Red LED

Operation

Ground fault or varistor defective.

disturbance C Yellow LED

3. Read section 9 "Troubleshooting" (page 57) and,

if necessary, the user manual provided. The meaning of the LED's as well as the error and status messages on the display are described in detail in this section.




6.1 Display

Feeding Operation

After fault-free grid connection of the Sunny Mini Central, it takes approximately one minute until the following display messages are shown alternately. The display messages shown before only have the purpose of indicating the initialization of the Sunny Mini Central and the process of controlling whether the power supply requirements are fulfilled.

• The energy generated today and the current operating mode are displayed first.

• After 5 seconds or by tapping on the enclosure lid, the current feed-in output and the PV voltage appear.

• In case of the SMC 7000HV-11 the current reactive power value Q

AC

and the shift factor cos ϕ (PF) are displayed after a further 5 seconds or when you tap again.

Q

AC

Q

AC positive = overexcited

negative = underexcited

• After a further 5 seconds, or when you tap again, the total energy produced and the time the Sunny

Mini Central has been connected to the grid are displayed.

• Then the cycle is restarted.

disturbance

• If a disturbance occurs, the message "Disturbance" will be shown in the status bar.

• The exact failure message follows.

• For example, if the grid disturbance message shown here is displayed immediately after connection, it may be due to the fact that the AC wire is not correctly connected or the line circuit breaker has not been switched on yet.

• If a non-standard compliant measured value is responsible for the disturbance, then the value measured at the time of the fault is displayed. If another measurement is possible, the present value is displayed in the second line.

Please refer to the delivered user manual of the Sunny Mini Central to read the exact explanations for the error and status messages!



PV Overvoltage


NOTICE!

Excessive DC voltage can destroy the Sunny Mini Central!

Disconnect the Sunny Mini Central immediately!

1. Turn off the line circuit breaker.

2. Remove the Electronic Solar Switch.

3. Disconnect the DC plug connectors.

1. Check DC voltage!

Result

☑ The DC voltage is higher than the maximum input voltage.

☑ The DC voltage is lower than the maximum input voltage.

Action

• Contact the planner / installer of the PV generator.

• Reconnect the Sunny Mini Central to the

PV generator as described in section

5.3 "PV generator connection (DC)"

(page 26).

2. If the message occurs again, disconnect the Sunny Mini Central again and contact the SMA

Serviceline (see section 13 "Contact" (page 70)).




6.2 LED Display

Summary

Green

glows continuously flashes quickly

(3 x per second) flashes slowly

(1 x per second) briefly goes out

(approx. 1 x per second)

Red

is not glowing glows continuously is not glowing glows continuously is not glowing glows continuously is not glowing

Yellow

is not glowing is not glowing glows continuously is not glowing is not glowing is not glowing is not glowing is not glowing is not glowing is not glowing is not glowing glows continuously

Feeding Operation

After a fault-free grid connection of the Sunny Mini

Central, it takes approximately one minute until the green

LED is continuously on. The blink codes shown before only have the purpose of indicating the initialization of the Sunny Mini Central and the process of checking whether the power supply requirements are fulfilled.

glows/flashes is not glowing glows/flashes

Status

OK (feeding operation) disturbance

OK (initialization)

OK (stop) disturbance

OK (waiting, grid monitoring) disturbance

OK (derating)

OK

(overnight shutdown) disturbance disturbance disturbance




Disturbance or Fault

If the Sunny Mini Central detects a disturbance or error, this is indicated through a blink code of the yellow and, where applicable, the red LEDs.

For example, if the yellow LED glows for 5 seconds immediately after connection, then goes out for

3 seconds and then flashes briefly twice, there is a grid fault. This could be because the AC cable has not been connected correctly or the line circuit breaker has not yet been switched on.

Meaning of the blink codes

For a detailed description of the blink codes, see the provided Sunny Mini Central user manual.



PV Overvoltage

(Yellow LED flashes 4 times quickly in succession)


NOTICE!

Excessive DC input voltage can destroy the Sunny Mini Central!

Disconnect the Sunny Mini Central immediately!

1. Turn off the line circuit breaker.

2. Remove the Electronic Solar Switch.

3. Disconnect the DC plug connectors.

1. Check DC voltage!

Result

☑ The DC voltage is higher than the maximum input voltage.

☑ The DC voltage is lower than the maximum input voltage.

Action

• Contact the planner / installer of the PV generator.

• Reconnect the Sunny Mini Central to the

PV generator as described in section

5.3 "PV generator connection (DC)"

(page 26).

2. If the message occurs again, disconnect the Sunny Mini Central again and contact the SMA

Serviceline (see section 13 "Contact" (page 70)).



Opening and Closing

7 Opening and Closing

NOTICE!

Electrostatic discharges can damage the Sunny Mini Central!

Internal components of the Sunny Mini Central can be irreparably damaged by electrostatic discharge.

• Ground yourself before touching a component.

7.1 Opening the Sunny Mini Central

DANGER!


Before opening the Sunny Mini Central:

• Switch off the line circuit breaker and prevent it from being reactivated.

1. Pull the Electronic Solar Switch downwards, slightly towards the wall.

DANGER!


A secure separation from the PV generator is only guaranteed after pulling off the

Electronic Solar Switch and all DC connectors.

• Remove the DC plug connector immediately to completely disconnect the PV generator from the Sunny Mini

Central.


Opening and Closing


DANGER!


The capacitors in the Sunny Mini Central require 5 minutes to discharge.

• Wait 5 minutes before opening the Sunny Mini Central.

2. Loosen all 6 lid screws and pull the lid forwards to remove it.

3. Verify the absence of voltage with respect to ground at the AC clamp with an appropriate meter.

☑ If there is a voltage present, check the installation!

☑ The Sunny Mini Central is tested for absence of voltage and you can work on it.



7.2 Closing the Sunny Mini Central

1. Secure the lid with 6 screws and the corresponding washers.

Tighten the screws with 6 Nm torque in the order shown on the right hand side. The toothing of the washers must face toward the lid.

The Sunny Mini Central packing list includes an additional screw and washer as spares.

Opening and Closing

DANGER!

Danger to life due to live lid!

The grounding of the enclosure lid is ensured by the toothed washers.

• Fasten the washers for all 6 screws with the toothing facing toward the lid.

2. Check the DC plug connector for correct polarity and connect it.

3. Check the Electronic Solar Switch for wear, as

described in section 8.2 , and attach it until it

audibly locks into place.


Opening and Closing


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 not plugged correctly, the Electronic Solar Switch can be damaged by high voltages.

• Press the handle firmly into place on the socket of the Electronic Solar Switch until it audibly locks into place.

• Make sure it is securely in place.

4. Switch on the line circuit breaker.

5. Check whether the display and the LEDs indicate normal operating mode (see section

6 "Commissioning the Sunny Mini Central"

(page 43)).

☑ The Sunny Mini Central is closed and re-commissioned.



Maintenance and Cleaning

8 Maintenance and Cleaning

Check the correct operation of the Sunny Mini Central at regular intervals. Impurities such as dust or pollen can cause heat accumulation that can lead to yield losses. Also check the Mini Central and the cables for visible external damage. Have repairs carried out if necessary.

8.1 Checking Heat Dissipation

8.1.1 Cleaning the Fans

If the fan guards 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. To do so, proceed as follows:

1. Disconnect the Sunny Mini Central from both the DC and AC connections, as described in

section 7.1 "Opening the Sunny Mini Central" (page 49).

2. Wait for the fans to stop rotating.

Cleaning the Fan Guards

3. Push the two latches at the right edge of the black plastic lid to one side and remove it carefully with the fan guards mounted behind.

4. Clean the fan guard with a soft brush, a paint brush, a cloth or compressed air.

Cleaning the fan

5. Press the front latches backwards and the rear latch forwards.

6. Remove the fan by pulling it slowly and carefully downwards.

7. Unlock and remove the plugs.

The fan cables are long enough that you can lift the fan far enough out to disconnect the internal plugs in the Sunny Mini Central.

8. Remove the fans and clean them with a soft brush, a paint brush or a cloth and water.

Do not use compressed air, as it could damage the fans.

9. After cleaning, assemble everything in reverse order.

10. Check the function of the fans as described in the following section.




8.1.2 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 (using Sunny Data Control, the Sunny

Boy Control data logger or the Sunny WebBox) or

• Insert the jumper on the sequential control system board (the jumper required to check the fans is included in the Sunny Mini Central accessories kit).

Setting the Parameter

1. Request the installer password on the SMA Serviceline (contact: see Page 70).

2. Set the "Fan Test" parameter to "1" in the installer mode.

3. Check the fans' air flow.

The Sunny Mini Central air in from underneath and then blows it back out on the upper sides.

Listen for any unusual noise, which could indicate incorrect installation or that the fans are faulty.

4. After checking the fans, set the "Fan Test" parameter back to 0.

Setting the Jumper

The Sunny Mini Central recognizes the jumper only after the system has been restarted (i.e. all LEDs must have gone out before a restart).


(page 49).

2. Plug the provided jumper in the slot on the controller board as shown below.

3. Close the Sunny Mini Central as described in section 7.2 "Closing the Sunny Mini Central"

(page 51).




4. Check the fans' air flow.

The Sunny Mini Central air in from underneath and then blows it back out on the upper sides.

Listen for any unusual noise, which could indicate incorrect installation or that the fans are faulty.

5. After checking the fans, remove the jumper. In doing so, open and close the Sunny Mini Central

as described in section 7 "Opening and Closing" (page 49).

☑ The check of the fans is completed.

8.1.3 Cleaning the air grills

The Sunny Mini Central sucks air in from underneath via the fan and blows it out again through the air grills on the upper sides. Clean the air grills if they are dirty.

Proceed as follows to do so:

1. Remove the air grills.

Insert your finger above in the space between the air grills and the enclosure and remove the air grills to the side.

2. Clean the air grills with a soft brush, a paint brush, or compressed air.

3. Re-attach the air grills to the Sunny Mini Central.

To help you identify the sides, the air grills are marked with "links/left" and "rechts/right" on the inside.

NOTICE!

The Sunny Mini Central can be damaged if insects enter!

• The air grills must not be removed permanently, because otherwise the device is not protected against the entrance of insects!

☑ The air grills are cleaned.




8.2 Checking the Electronic Solar Switch (ESS) for wear

Check the Electronic Solar Switch for wear before plugging it in.

Result

☑ The metal tongues inside the connector have no damage and no discoloration.

Action

1. Attach the Electronic Solar Switch handle.

2. Re-commission the Sunny Mini Central as

described in section 6 "Commissioning the

Sunny Mini Central" (page 43).

☑ The metal tongues inside the connector have a brown discoloration or are burned off.

The Electronic Solar Switch can no longer reliably disconnect the DC side.

1. Replace the Electronic Solar Switch handle before attaching it again (order number see

section 12 "Accessories" (page 69).

2. Commission the Sunny Mini Central as

described in section 6 "Commissioning the




Troubleshooting

9 Troubleshooting

Should the Sunny Mini Central display other blink codes or display messages than those described

in section 6 "Commissioning the Sunny Mini Central" (page 43), refer to the user manual of the Sunny

Mini Central to find the exact meaning of the display message or the blink code and details on troubleshooting.

Please do not attempt any other repairs than those described here, but instead use the 24-hour replacement service (the Sunny Mini Central is made ready for shipping within 24 hours and then given to a shipping company) and the SMA Solar Technology repair service.

9.1 The red LED is continuously on

If the red LED of the status display is continuously on during operation, there is either a ground fault in the PV generator or at least one of the varistors for the overvoltage protection is defective.

9.1.1 Checking the PV Generator for Ground Fault

1. Disconnect the Sunny Mini Central from both the DC and AC connections, as described in

section 7.1 "Opening the Sunny Mini Central" (page 49).

NOTICE!

Excessive voltages can destroy the measuring device!

• Only use measuring devices with a DC input voltage range up to at least 800 V.

2. Measure the voltages between the plus and minus pole of a string against the ground potential.

☑ If voltage is found, there is a ground fault in the corresponding string.

DANGER!

Risk of lethal electric shock!

In case of a ground fault, the PV generator may carry high voltages.

• Do not touch the frame of the PV generator.

• Wait until no voltage can be measured.

• Do not connect strings with ground faults to the Sunny Mini Central.


Troubleshooting


The approximate position of the ground fault can be determined from the ratio of the measured voltages between plus against ground potential and minus against ground potential.

Example:

The ground fault is between the second and third module in this case.

3. Repeat step 2 for each string.

Result

☑ You have found a ground fault.

☑ You have found no ground fault.

Action

• The installer of the PV generator must remedy the ground fault in the affected string before you may reconnect the string to the Sunny Mini Central.

• Do not reconnect the faulty string.

• Commission the Sunny Mini Central as

described in section 7.2 "Closing the


It is likely that one of the thermally monitored varistors is defective.

• Check the varistors as described in section

9.2 "Checking the Function of the

Varistors" (page 59).

☑ The ground fault check is finished.



Troubleshooting

9.2 Checking the Function of the Varistors

Varistors are wearing parts. Their functioning becomes restricted through aging or due to repeated responses as a result of overvoltages. 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 with the help of 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 as follows:


(page 49).

2. With the aid of a multimeter, determine for both varistors in the installed state whether a conductive connection exists between connectors B and C.

Result

☑ There is a conducting connection.

☑ There is no conducting connection.

Action

There is probably another error in the Sunny Mini Central.

• Close the Sunny Mini Central as described in section

7.2 "Closing the Sunny Mini Central“ (47).

• Contact the SMA Serviceline (see section 13 "Contact"

(page 70)).

The respective varistor is not working and must be replaced.

Varistor failure is generally due to influences which affect all varistors similarly (temperature, age, induced overvoltage).

SMA Solar Technology recommends that you replace both varistors.

The varistors are specially manufactured for use in the Sunny

Mini Central and are not commercially available. They must be ordered directly from SMA Solar Technology (see section

12 "Accessories" (page 69)).

• To replace the varistors, proceed to step 3.


Troubleshooting


NOTICE!

The Sunny Mini Central could be irreparably damaged by overvoltage!

If varistors are missing, the Sunny Mini Central is no longer protected against overvoltages.

• Do not operate the Sunny Mini Central without varistors in systems 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).

☑ The terminal clamps loosen up.

If you do not receive an insertion tool for operating the terminal clamps with your replacement varistors, contact SMA Solar Technology. As an alternative, the terminal contacts can be operated using a 3.5 mm wide screwdriver.

4. Remove the varistor (2).

5. Insert new varistor (3).

The pole with the small loop (crimp) must be fitted to terminal A (3) when remounting.

6. Close the Sunny Mini Central as described in

section 7.2 "Closing the Sunny Mini Central"

(page 51).

☑ The check of the varistors is completed.



Decommissioning

10 Decommissioning

10.1 Dismantling the Sunny Mini Central


(page 49).

2. Remove all cables from the Sunny Mini Central.

3. Close the Sunny Mini Central with the 6 screws and the corresponding washers.

4. Remove both screws on the left and right side of the

Sunny Mini Central that attach it to the wall mounting bracket.

5. Disconnect the anti-theft protection, if applicable.

6. Remove the Sunny Mini Central upwards in a vertical position from the wall mounting bracket.

7. Use the side handles above and below or place a steel rod in the enclosure opening (max. diameter

30 mm) to transport the Sunny Mini Central. The rod must be pushed through the enclosure opening.

☑ The Sunny Mini Central is now dismantled.


Decommissioning


10.2 Packing the Sunny Mini Central

If possible, always package the Sunny Mini Central in the original packaging. If it is no longer available, you can also use an equivalent box. The box must be completely closeable, have a handle system and made to support both the weight and size of the Sunny Mini Central.

10.3 Storing the Sunny Mini Central

Store the Sunny Mini Central in a dry place where ambient temperatures are always between -25 °C and +60 °C.

10.4 Disposing of the Sunny Mini Central

Dispose of the Sunny Mini Central at the end of its service life in accordance with the disposal regulations for electronic waste which apply at the installation site at that time. Alternatively, send it back to SMA Solar Technology with shipping paid by sender, and labeled "ZUR ENTSORGUNG"

("for disposal") (see section Page 70 for contact)‘.



Technical Data

11 Technical Data

11.1 SMC 7000HV

Data PV generator connection

Max. input voltage U

PV 0

SMC 7000HV

800 V a)

Input voltage, MPP range

PV start voltage, adjustable

Max. input current

Max. input power

Voltage ripple

Internal consumption during operation

U

PV

U

PV Start

I

PV Max

P

DC

U pp

(Based on -10 °C cell temperature)

335 V ... 560 V DC

400 V

23 A

7500 W

< 10 % of the input voltage

< 7 W a) The maximum open circuit voltage, which can occur at a cell temperature of -10 °C, may not exceed the maximum input

voltage.

Grid connection data

AC nominal power

Max. AC power

Nominal AC current

P

AC nom

P

AC, max

I

AC nom

I

AC max

Max. AC current

Max. fuse protection

Harmonic distortion of output current K

IAC

(at K

Ugrid

< 2 %, P

AC

> 0.5 P

ACnom

)

Nominal operating voltage

Voltage range

(extended operating range)

U

U

AC nom

AC

Nominal operating frequency

Frequency range f

AC nom f

AC


Power factor (at nominal output power) cos ϕ

Overvoltage category

Test voltage (50 Hz)

Test surge voltage

Internal consumption in night mode

SMC 7000HV

6650 W

7000 W

28.9 A

31 A

50 A

< 3 %

220 V / 230 V / 240 V

180 V ... 265 V

50 Hz/60 Hz

50 Hz: 45.5 Hz ... 54.5 Hz

60 Hz: 55.5 Hz ... 64.5 Hz

1

III

2 kV

4 kV (serial interface: 6 kV)

0.25 W


Technical Data


General data

EC Declaration of Conformity

SMC 7000HV

set of documents enclosed,

Dimensions (W x H x D)

Weight

Protection rating as per DIN EN 60529

Download area www.SMA.de/en

468 mm x 613 mm x 242 mm (approx.)

Climatic conditions according to DIN EN 50178:1998-04:

Location of type C:

65 kg

IP65

Class 4K4H extended temperature range: -25 °C ... +60 °C extended humidity range: 0 ... 100 %,

Transport of type E:

Operating temperature range

Max. operating altitude

Topology

Fan connection

Protection class

Noise emission (typical) extended air pressure range: 79.5 kPa ... 106 kPa class 2K3

Temperature range -25 °C ... +70 °C

– 25 °C ... 60 °C

2000 m above Mean sea level

Low frequency transformer designed for safe disconnection in accordance with DIN EN 50178:1998-04

I

41 dB(A)

Protective function DC side

All-pole disconnection unit on the DC input side

Overvoltage protection

Personal protection

Pole Confusion Protection

Protective function AC side

Short-circuit proof

All-pole disconnection unit on grid side

SMC 7000HV

Electronic Solar Switch, DC plug connector

Thermally monitored varistors

Insulation monitoring (R iso

> 1 MOhm) via short-circuit diode

SMC 7000HV

Current control

Automatic disconnection device

(SMA Grid Guard 2.1)

Communication

RS485 (galvanically isolated) radio

Bluetooth

®

Wireless Technology

SMC 7000HV

optional optional optional



Technical Data

Electronic Solar Switch (ESS)

Electrical service life (in case of a short circuit, with a nominal current of 30 A)

Maximum switching current

Maximum switching voltage

Maximum PV power

Protection rating when plugged

Protection rating when unplugged

Efficiency

Max. efficiency

European efficiency

Efficiency curve

η max.

η euro

SMC 7000HV

Min. 50 switching processes

30 A

800 V

Approx. 10 kW

IP65

IP21

SMC 7000HV

96.1 %

95.3 %


Technical Data


11.2 SMC 7000HV-11

Data PV generator connection

Max. input voltage U

PV 0

SMC 7000HV-11

800 V a)

Input voltage, MPP range

PV start voltage, adjustable

Max. input current

Max. input power (at cos ϕ = 1)

Voltage ripple

Internal consumption during operation

U

PV

U

PV Start

I

PV Max

P

DC

U pp

(Based on -10 °C cell temperature)

335 V ... 560 V DC

400 V

23 A

7500 W

< 10 % of the input voltage

< 7 W a) The maximum open circuit voltage, which can occur at a cell temperature of -10 °C, may not exceed the maximum input

voltage.

Grid connection data

AC nominal power

Max. AC power

Nominal AC current

Max. AC current

Max. fuse protection

Harmonic distortion of output current

(at K

Ugrid

< 2 %, P

AC

> 0.5 P

ACnom

)

Nominal operating voltage

Voltage range


Nominal operating frequency

Frequency range


Shift factor (cos ϕ), configurable

Overvoltage category

Test voltage (50 Hz)

Test surge voltage

Internal consumption in night mode

S

AC nom

S

AC Max

I

AC nom

I

AC max

K

IAC

U

AC nom

U

AC f

ACnom f

AC cos ϕ

SMC 7000HV-11

6650 VA

7000 VA

28.9 A

31 A

50 A

< 3 %

220 V / 230 V / 240 V

180 V ... 265 V

50 Hz/60 Hz

50 Hz: 44 Hz ... 55 Hz

60 Hz: 54 Hz ... 65 Hz

0.8

overexcited

... 0.8

III underexcited

2 kV

4 kV (serial interface: 6 kV)

0.25 W



Technical Data

General data

EC Declaration of Conformity

SMC 7000HV-11

set of documents enclosed,

Dimensions (W x H x D)

Weight

Protection rating as per DIN EN 60529

Download area www.SMA.de/en

468 mm x 613 mm x 242 mm (approx.)

Climatic conditions according to DIN EN 50178:1998-04:

Location of type C:

65 kg

IP65

Class 4K4H extended temperature range: -25 °C ... +60 °C extended humidity range: 0 ... 100 %,

Transport of type E:

Operating temperature range

Max. operating altitude

Topology

Fan connection

Protection class

Noise emission (typical) extended air pressure range: 79.5 kPa ... 106 kPa class 2K3

Temperature range -25 °C ... +70 °C

– 25 °C ... +60 °C

2000 m above Mean sea level

Low frequency transformer

Designed for safe disconnection in accordance with DIN EN 50178:1998-04

I

41 db(A)

Protective function DC side

All-pole disconnection unit on the DC input side

Overvoltage protection

Personal protection

Pole Confusion Protection

Protective function AC side

Short-circuit proof

All-pole disconnection unit on grid side

SMC 7000HV-11

Electronic Solar Switch, DC plug connector

Thermally monitored varistors

Insulation monitoring (R iso

> 1 MOhm) via short-circuit diode

SMC 7000HV-11

Current control

Automatic disconnection device

(SMA Grid Guard 2.1)

Communication

RS485 (galvanically isolated)

Bluetooth

®

Wireless Technology

SMC 7000HV-11

optional optional


Technical Data

Electronic Solar Switch (ESS)

Electrical service life (in case of a short circuit, with a nominal current of 30 A)

Maximum switching current

Maximum switching voltage

Maximum PV power

Protection rating when plugged

Protection rating when unplugged

Efficiency

Max. efficiency

European efficiency

Efficiency curve

η max.

η euro


SMC 7000HV-11

Min. 50 switching processes

30 A

800 V

Approx. 10 kW

IP65

IP21

SMC 7000HV-11

96.2 %

95.5 %



Accessories

12 Accessories

In the following overview you will find the corresponding accessories and replacement parts for your product. If needed, you can order these from SMA Solar Technology or your dealer.

Designation Brief description SMA order number

SMC

7000HV

SMC

7000HV-11

SWR-MC DC connection set

Multi Contact 3 mm

DC- Connection set

Multi-Contact 3 adapter set, max. flow current: 21 A

Multi-Contact 4 adapter set,

Multi-Contact 4 mm

Air grills max. flow current: 30 A

Tyco DC connection set TYCO adapter set, max. flow current: 30 A

Air grill set "right and left" as spare part

Electronic Solar Switch ESS handle replacement part

Power Balancer plug Upgrade kit to retrofit a Sunny Mini

Central Equipped with an SMA

Power Balancer to SMA Power

Balancer Connector System

Power Balancer Y cable Connecting cable (2 x 2 m) for SMA

Power Balancer connector system

RS485 upgrade kit

Radio upgrade kit

RS485 interface

Radio Piggy-Back for upgrading a

Sunny Mini Central for communication with Sunny Beam, including antenna, coaxial cable, and PG threaded joint (metal)

Bluetooth upgrade kit Bluetooth communication interface

Power Reducer Box

Insertion tool for replacing the varistors

Power Reducer Box

Replacement varistors Set of thermally monitored varistors

(2 pcs.) including insertion tool

Insertion tool for varistor sets

Positive grounding set Upgrade kit for the positive connection to ground of the DC input

Negative grounding set Upgrade kit for the negative connection to ground of the DC input

MC-SET

TYCO-SET

45-7202

ESS-HANDLE:04

PBL-SMC-10-NR

PBL-YCABLE-10

485PB-SMC-NR

BEAMPB-NR --

On request

POWERREDUCERBOX

MSWR-TV7

SB-TVWZ

ESHV-P-NR

ESHV-N-NR


Contact


13 Contact

If you have technical problems with our products, please contact our Serviceline. We need the following information in order to provide you with the necessary assistance:

• Inverter type

• Serial number of the Sunny Mini Central

• Type and number of the modules connected

• Communication type

• Blink code or display of the Sunny Mini Central


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: [email protected]



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

®

word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by SMA

Solar Technology is under license.


Sonnenallee 1

34266 Niestetal

Germany

Tel. +49 561 9522-0

Fax +49 561 9522-100 www.SMA.de

E-Mail: [email protected]

© 2004 to 2009 SMA Solar Technology AG. All rights reserved


SMA Solar Technology AG

www.SMA.de

SMA Sunny Mini Central 7000HV, 7000HV-11 PV Inverter Installation Guide

Assistant Bot

PV Inverter

SUNNY MINI CENTRAL 7000HV

Table of Contents

1 Notes on this Guide

1.1 Validity

1.2 Target Group

1.3 Additional Information

1.4 Symbols Used

2 Security

2.1 Appropriate Usage

Operating principle of a PV plant with Sunny Mini Central.

Certified Countries

2.2 Safety Precautions

3 Unpacking

3.1 Scope of delivery

3.2 Identifying the Sunny Mini Central

4 Installation

4.1 Selecting the Mounting Location

Observe the following conditions during installation:

4.2 Mounting the Sunny Mini Central

5 Electrical Connection

5.1 Overview of the Connection Area

5.1.1 View from Below

5.1.2 View from Inside

5.2 Connection to the public grid (AC)

Cable Sizing

Cable Requirements

Load Disconnection Unit

Connecting the Sunny Mini Central to the public grid (AC):

Additional Grounding of the Enclosure

5.2.1 Setting the Display Language

5.3 PV generator connection (DC)

Connecting the PV Generator (DC)

5.4 Connection of the SMA Power Balancer

5.4.1 Configuration

Configuration options

5.4.2 cabling

5.4.3 Functionality Test

5.5 Communication

5.6 Setting the installation country

5.7 Reactive power and grid management

5.7.1 Setting the shift factor ϕ

Processes and setting parameters

Configuration options for "PFCnst"

5.7.2 Frequency dependent active power limitation P(f)

Processes and setting parameters

Configuration options for "On"

5.7.3 Grid safety management via external active power limitation

Processes and setting parameters

Configuration options for "WCnst"

5.7.4 Soft start of SMC 7000HV-11

5.7.5 Phase assignment of SMC 7000HV-11

5.7.6 Additional country parameters of SMC 7000HV-11

6 Commissioning the Sunny Mini Central

6.1 Display

Feeding Operation

disturbance

PV Overvoltage

6.2 LED Display

Summary

Feeding Operation

Disturbance or Fault

PV Overvoltage

7 Opening and Closing

7.1 Opening the Sunny Mini Central

7.2 Closing the Sunny Mini Central

8 Maintenance and Cleaning

8.1 Checking Heat Dissipation

8.1.1 Cleaning the Fans

Cleaning the Fan Guards

Cleaning the fan

8.1.2 Checking the fans

Setting the Parameter

Setting the Jumper

8.1.3 Cleaning the air grills

8.2 Checking the Electronic Solar Switch (ESS) for wear

9 Troubleshooting

9.1 The red LED is continuously on