SMA SC 500CP-US-10 User Manual

Operating Manual

SUNNY CENTRAL 500CP-US/CA / 500CP-US/CA 600V / 630CP-US/CA / 720CP-US/CA / 750CP-US/CA / 800CP-US/CA / 850CP-US/CA / 900CP-US/CA

SCCP-US-BE-US_en-52 | 98-118200.03 | Version 5.2 AMERICAN ENGLISH

Legal Provisions SMA America, LLC

Legal Provisions

be it electronic, mechanical, photographic, magnetic or otherwise, without the prior written permission of SMA America, LLC.

Neither SMA America, LLC nor SMA Solar Technology Canada Inc. makes representations, express or implied, with respect to this documentation or any of the equipment and/or software it may describe, including (with no limitation) any implied warranties of utility, merchantability, or fitness for any particular purpose. All such warranties are expressly disclaimed. Neither SMA America, LLC nor its distributors or dealers nor SMA Solar Technology Canada Inc. nor its distributors or dealers shall be liable for any indirect, incidental, or consequential damages under any circumstances.

(The exclusion of implied warranties may not apply in all cases under some statutes, and thus the above exclusion may not apply.)

Specifications are subject to change without notice. Every attempt has been made to make this document complete, accurate and up-to-date. Readers are cautioned, however, that SMA America, LLC and SMA Solar Technology Canada Inc. reserve the right to make changes without notice and shall not be responsible for any damages, including indirect, incidental or consequential damages, caused by reliance on the material presented, including, but not limited to, omissions, typographical errors, arithmetical errors or listing errors in the content material.

Trademarks

All trademarks are recognized, even if not explicitly identified as such. A lack of identification does not mean that a product or symbol is not trademarked.

The Bluetooth

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

by SMA America, LLC and SMA Solar Technology Canada Inc. is under license. Modbus QR Code Phillips Torx

is a registered trademark of Schneider Electric and is licensed by the Modbus Organization, Inc.

is a registered trademark of DENSO WAVE INCORPORATED.

and Pozidriv® are registered trademarks of Phillips Screw Company.

is a registered trademark of Acument Global Technologies, Inc.

SMA America, LLC

3801 N. Havana Street

Denver, CO 80239 U.S.A.

SMA Solar Technology Canada Inc.

2425 Matheson Blvd. E

7th Floor

Mississauga, ON L4W 5K4

Canada

2 SCCP-US-BE-US_en-52 Operating Manual

SMA America, LLC Important Safety Instructions

'$1*(5

:$5 1,1*

&$87,21

/05*$&

Important Safety Instructions

SAVE THESE INSTRUCTIONS

This manual contains important instructions for the following products:

• SC 500CP-US-10 (Sunny Central 500CP-US/CA)

• SC 500CP-US-10 600V (Sunny Central 500CP-US/CA 600V)

• SC 630CP-US-10 (Sunny Central 630CP-US/CA)

• SC 720CP-US-10 (Sunny Central 720CP-US/CA)

• SC 750CP-US-10 (Sunny Central 750CP-US/CA)

• SC 800CP-US-10 (Sunny Central 800CP-US/CA)

• SC 850CP-US-10 (Sunny Central 850CP-US/CA)

• SC 900CP-US-10 (Sunny Central 900CP-US/CA)

This manual must be followed during installation and maintenance.

The product is designed and tested in accordance with international safety requirements, but as with all electrical and electronic equipment, certain precautions must be observed when installing and/or operating the product. To reduce the risk of personal injury and to ensure the safe installation and operation of the product, you must carefully read and follow all instructions, cautions and warnings in this manual.

Warnings in this document

A warning describes a hazard to equipment or personnel. It calls attention to a procedure or practice, which, if not correctly performed or adhered to, could result in damage to or destruction of part or all of the SMA equipment and/or other equipment connected to the SMA equipment or personal injury.

Symbol Description

DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury.

WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury.

CAUTION indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.

NOTICE is used to address practices not related to personal injury.

Operating Manual SCCP-US-BE-US_en-52 3

General Warnings SMA America, LLC

:$5 1,1*

Warnings on this product

The following symbols are used as product markings with the following meanings.

Symbol Description

Warning regarding dangerous voltage

The product works with high voltages. All work on the product must only be performed as described in the documentation of the product.

Beware of hot surface

The product can become hot during operation. Do not touch the product during operation.

Electric arc hazards

The product has large electrical potential differences between its conductors. Arc flashes can occur through air when high-voltage current flows. Do not work on the product during operation.

Risk of Fire

Improper installation of the product may cause a fire.

Observe the operating instructions

Read the documentation of the product before working on it. Follow all safety precautions and instructions as described in the documentation.

General Warnings

General Warnings All electrical installations must be made in accordance with the local and National Electrical Code

or the Canadian Electrical Code provincial, federal or national laws, regulation or codes applicable to the installation and use of the product, including without limitation applicable electrical safety codes. All installations must conform with the laws, regulations, codes and standards applicable in the jurisdiction of installation. SMA assumes no responsibility for the compliance or noncompliance with such laws or codes in connection with the installation of the product.

Before installing or using the product, read all of the instructions, cautions, and warnings in this manual. Before connecting the product to the electrical utility grid, contact the local utility company. This connection must be

made only by qualified personnel. Wiring of the product must be made by qualified personnel only.

CSA C22.1. This document does not and is not intended to replace any local, state,

ANSI/NFPA 70

4 SCCP-US-BE-US_en-52 Operating Manual

SMA America, LLC Table of Contents

Table of Contents

1 Information on this Document. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.1 Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.2 Target Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.3 Additional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.4 Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1.5 Typographies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1.6 Nomenclature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1.7 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.1 Intended Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.2 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.3 Personal Protective Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.4 Symbols on the Sunny Central Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.5 Labels on the Sunny Central Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.5.1 Inverter without integrated DC switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

2.5.2 Inverter with integrated DC switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

3 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3.1 Plant Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3.2 Sunny Central Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

3.2.1 Design of the Sunny Central Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

3.2.2 Type Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

3.2.3 Operating States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

3.2.4 Touch Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

3.2.5 Key Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

3.2.6 Integrated AC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

3.2.7 Integrated DC Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

3.3 Sunny Central Communication Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

3.4 Remote Shutdown. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

3.5 External Fast Stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

3.6 Insulation and Ground Fault Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

3.6.1 Operating Principles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

3.6.2 Ground Fault Monitoring in Grounded PV Arrays. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

3.6.2.1 Ground Fault Detection Interruption (GFDI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

3.6.3 Insulation Monitoring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

3.6.3.1 Insulation Monitoring Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

3.6.4 Combined Insulation and Ground Fault Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

3.6.4.1 GFDI and Insulation Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

3.6.4.2 Advanced Remote GFDI and Insulation Monitoring Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

3.7 Grid Management Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

3.7.1 Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

3.7.2 Active Power Limitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

3.7.3 Reactive Power Setpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

3.7.4 Full and Limited Dynamic Grid Support (FRT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

3.7.5 Decoupling Protection Ramp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

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Table of Contents SMA America, LLC

3.7.6 Grid Management Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

3.7.7 Q at Night . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

3.8 Islanding Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

3.9 Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

4 Touch Display of the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

4.1 Touch Display Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

4.2 Explanation of Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

4.2.1 Status Info Line. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

4.2.2 Information Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

4.2.3 Navigation Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

4.3 Selecting the Language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

4.4 Changing the Date, Time, and Time Zone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

4.5 Selecting the Display Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

4.6 Setting the Brightness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

4.7 Entering the Installer Password. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

5 Plant Network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

5.1 Plant Network Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

5.2 Setting the IP Address on the Laptop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

5.3 Configuring the IP Address of the Inverter for Static Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

5.4 Configuring the IP Address of the Inverter for Dynamic Networks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

6 Communication with the SC-COM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

6.1 Displaying Instantaneous Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

6.2 Changing Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

6.3 Setting the Remote Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

7 Active Power Limitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

7.1 Power Frequency-Dependent Active Power Limitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

7.2 Active Power Limitation Independent of the Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

7.2.1 Selecting the Procedure with the Parameter P-WMod . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

7.2.2 Off Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

7.2.3 WCtlCom Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

7.2.4 WCnst Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

7.2.5 WCnstNom Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

7.2.6 WCnstNomAnln Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

7.3 Displaying the Status of the Active Power Limitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

7.4 Displaying Error Messages and Warnings of Active Power Limitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

8 Reactive Power Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

8.1 Selecting Reactive Power Control Procedure with the Parameter Q-VArMod . . . . . . . . . . . . . . . . . . . . . . . 56

8.1.1 Off Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

8.1.2 VArCtlCom Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

8.1.3 PFCtlCom Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

8.1.4 VArCnst Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

8.1.5 VArCnstNom Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

8.1.6 VArCnstNomAnln Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

8.1.7 PFCnst Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

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8.1.8 PFCnstAnln Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

8.1.9 PFCtlW Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

8.1.10 VArCtlVol Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

8.1.11 VArCtlVolHystDb Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

8.2 Displaying Error Messages and Warnings for the Reactive Power Setpoint . . . . . . . . . . . . . . . . . . . . . . . . 64

8.3 Q at Night . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

8.3.1 Selecting the Mode with the Parameter QoDQ-VarMod . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65

8.3.1.1 No Q at Night: Off Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

8.3.1.2 Q at Night with Operation Command via Modbus Protocol: WCtlCom Procedure. . . . . . . . . . . . . . . . . . . . . . 66

8.3.1.3 Q at Night with Absolute Value: VArCnst Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

8.3.1.4 Q at Night as a Percentage of the Nominal Power: VArCnstNom Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . 66

8.3.1.5 Q at Night via Standard Signal: VArCnstNomAnIn Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

8.3.1.6 Q at Night Depending on the Line Voltage: VArCtlVol Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

8.3.1.7 Measures for Voltage Support through Parameterization of Reactive Power/Voltage Characteristic Curve:

VArCtlVolHystDb Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

9 Grid Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

9.1 How Grid Monitoring Works. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

9.2 Monitoring the Line Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

9.3 Monitoring the Power Frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

9.4 Measurement Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

9.5 Grid Connection after Correction of Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

9.6 Setting the Medium Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

10 Setting the Insulation Monitoring of the PV Plant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

10.1 Setting the Insulation Monitoring of the PV Plant with Advanced Remote GFDI and an Insulation Monitoring

Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

10.1.1 Information on Insulating PV Modules Equipped with Advanced Remote GFDI and Insulation Monitoring Device

10.1.2 Switching to Insulated Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

10.1.3 Switching to Grounded Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

11 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77

11.1 Safety During Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

11.2 Reading Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

11.2.1 Reading Error Messages via Touch Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77

11.2.2 Reading Error Messages via the User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77

11.3 Acknowledging Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

11.3.1 Acknowledging the Error Messages via the Key Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78

11.3.2 Acknowledging Errors via the User Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78

11.4 Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

11.4.1 Behavior of the Inverter under Fault Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78

11.4.2 Error Numbers 01xx to 13xx - Disturbance on the Utility Grid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80

11.4.3 Error Number 34xx to 40xx ‒ Disturbance on the PV Array . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81

11.4.4 Error Number 60xx to 90xx ‒ Disturbance on the inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83

12 Instantaneous Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87

12.1 Inverter Instantaneous Values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

12.1.1 Power Limitation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87

12.1.2 Error Channels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87

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12.1.3 Measured Values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87

12.1.4 Device-Internal Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88

12.1.5 Internal Counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88

12.1.6 Service-Relevant Display Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89

12.2 Sunny Central String-Monitor-US . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

12.2.1 Instantaneous Values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89

12.2.2 Device-Internal Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89

12.2.3 Status Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89

13 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

13.1 Sunny Central Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

13.1.1 Power Limitation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

13.1.2 Grid Monitoring/Grid Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101

13.1.3 Grid Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104

13.1.4 Insulation Monitoring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105

13.1.5 Device-Internal Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106

14 Contact. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

15 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

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1 Information on this Document

This section provides important information on how to use this document and how to work with the Sunny Central inverter. Among other things, this document specifies the Sunny Central inverters for which this document is valid and the target group for which it has been written.

1.1 Validity

This document is valid for the following device types:

• Sunny Central 500CP-US/CA (SC 500CP-US-10)

• Sunny Central 500CP-US/CA 600V (SC 500CP-US-10 600V)

• Sunny Central 630CP-US/CA (SC 630CP-US-10)

• Sunny Central 720CP-US/CA (SC 720CP-US-10)

• Sunny Central 750CP-US/CA (SC 750CP-US-10)

• Sunny Central 800CP-US/CA (SC 800CP-US-10)

• Sunny Central 850CP-US/CA (SC 850CP-US-10)

• Sunny Central 900CP-US/CA (SC 900CP-US-10)

The production version is indicated on the type label. The firmware version can be read out via the user interface. This document describes the operation of the inverter and troubleshooting.

1.2 Target Group

This document is intended for qualified persons. Only qualified persons are allowed to perform the tasks described in this document.

Qualified persons have received appropriate training and have demonstrated the ability and knowledge to install, operate, and perform maintenance on the device.

Qualified persons have been trained in how to deal with the dangers and risks associated with installing electrical installations and possess all the necessary knowledge for averting danger.

Qualified persons are aware of the obligation to wear Hazard Risk Category 2 personal protective equipment and always comply with the general safety regulations for dealing with electric voltage.

1.3 Additional Information

Links to additional information can be found at www.SMA-Solar.com:

Information Document type

Installation requirements for Sunny Central 500CP-US / 500CP-US 600V / 630CP-US / 720CP-US / 750CP-US / 800CP-US

Medium-Voltage Transformers - Important Requirements for Medium-Voltage Transformers and Transformers for Auxiliary Power Supply for SUNNY CENTRAL CP-US Series Inverters

Technical Information

Sunny Central Communication Controller Technical Information

Sunny Main Box ‒ Connecting the DC cabling for PV inverters Technical Information

SC-COM Modbus® Interface (Modbus information including the Zone Monitoring option) Technical Description

Q at Night Technical Information

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1.4 Symbols

Symbol Explanation

Information that is important for a specific topic or goal, but is not safety-relevant

☐ Indicates a requirement for meeting a specific goal

☑ Desired result

✖ A problem that could occur

1.5 Typographies

Typography Usage Example

bold • Display messages

• Elements on a user interface

•Parameters

• Connections

•Slots

• Elements to be selected

• Elements to be entered

> • Connects several elements to be selected • Select Plant > Detect.

[Button/Key] • Button or key to be selected or pressed • Select [Start detection].

• Select the parameter ExlTrfErrEna and set to Off.

• Select the tab Parameters.

1.6 Nomenclature

The following nomenclature is used in this document:

Complete designation Designation in this document

SMA America Production, LLC SMA

SMA Solar Technology Canada Inc. SMA

Sunny Central Communication Controller SC-COM

1.7 Abbreviations

In this document, abbreviations are used at certain points. In the following table, you will find the full designation and an explanation, where applicable.

Abbreviation Designation Explanation

AC Alternating Current ‒

DC Direct Current ‒

FRT Fault Ride-Through Dynamic grid support

GFDI Ground Fault Detection Interruption ‒

IP Internet Protocol ‒

LED Light-Emitting Diode ‒

LVRT Low-Voltage Ride-Through Limited dynamic grid support

MAC Media Access Control ‒

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Abbreviation Designation Explanation

MPP Maximum Power Point ‒

MSL Mean Sea Level ‒

OF Optical Fiber ‒

PE Protective Earth Protective conductor

PV Photovoltaics ‒

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2 Safety

In this section, you will find general safety precautions which you must observe whenever working on the Sunny Central inverter. Pay special attention to these sections to avoid personal injury and property damage.

2.1 Intended Use

The Sunny Central CP-US is a PV inverter which converts the direct current generated in the PV modules into grid-compliant alternating current. An external MV transformer fitted downstream feeds the alternating current generated into the utility grid.

The inverter is suitable for both indoor and outdoor installation. The inverter is only licensed for use with a suitable transformer and providing that the maximum permissible DC input voltage and the permitted ambient conditions are complied with. The transformer must be designed for voltages that arise during pulsed mode of the inverter.

The inverter has been evaluated by UL for compliance with UL 1741 / IEEE 1547 requirements at the inverter terminals on the local area side of an interconnection transformer for all IEEE 1547 tests other than for Unintentional Islanding. It has additionally been evaluated for selected tests for use with UL Recognized Component low-voltage transformers as noted in the table below:

Test Manufacturer Model Electrical Ratings

Unintentional Islanding Test J. Schneider DLGX

1000F-1016TO1001

Synchronization, Harmonics, and Open Phase

The inverter has not been evaluated for exporting current into a low-voltage electrical power system (EPS) with local loads present, and must connect to the medium-voltage EPS via an externally-provided medium-voltage transformer.

The external transformer shall provide isolated primary and secondary windings rated for the output voltage and kVA rating of the inverter. The transformer shall be located between the output of the inverter and the medium-voltage utility power connection.

The Authority Having Jurisdiction (AHJ) must consider the effect of the transformer provided in the field with respect to electrical ratings, impedance, and the resultant effects on the utility interconnection performance of the inverter, with respect to the ratings and impedance of the transformer selected.

The inverter has not been evaluated for an installation of multiple inverters connected to one transformer. The Authority Having Jurisdiction shall determine if any additional evaluation is necessary of such a system.

The inverter can have as an option an AC power switch for "branch circuit protection". This AC circuit breaker simultaneously acts as the AC Disconnect in accordance with NEC ANSI/NFPA 70 and CEC. For inverters without an AC circuit breaker, "branch circuit protection" and an AC Disconnect must be implemented by the installer. Further information is provided in Section 3.1.

The inverter with an integrated AC Disconnect can be optionally ordered with an integrated DC Switch in order to be able to disconnect the inverter from the PV array. Both devices are designed to be used with a lockout device to secure the inverter against reconnection during service. If the inverter does not have an integrated DC Switch, an external DC Disconnect must be installed in accordance with NEC ANSI/NFPA 70 and CEC, in order to be able to disconnect the inverter from the PV array.

J. Schneider DLGX

1250F-1001TO1001

Primary 289 V Secondary 480 V, 1,000 kVA

Primary 480 V / 1,500 A Secondary 480 V / 1,500 A, 1,250 kVA

If the unit is not provided with a GFDI or insulation monitoring device, this inverter must be used with an external GFDI as required by the Article 690 of the National Electrical Code an external insulation monitoring device according to UL 1741.

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SMA America, LLC 2 Safety

The models SC 850CP-US and SC 900CP-US are only provided with transfer trip functionality to meet unintentional islanding requirements. An external signal is required from the utility (EPS) to cause the inverter to cease-to-energize the EPS during an island condition. Both inverters have also been tested for automatic unintentional islanding performance (IEEE 1547.1 chapter 5.7, "Unintentional Islanding") up to 880 kVA AC power.

The outdoor version of the inverter corresponds to UL 1741 "Type 3R" and can also be operated in rain, sleet, and snow. The indoor version corresponds to UL 1741 "Type 1" and is only licensed for installation in electrical equipment rooms. Only persons fulfilling all of the skills for the target group may work on or with the inverter. Intended use also includes reading the product documentation and observing all safety precautions. All work on the inverter must be performed using appropriate tools and in compliance with the ESD protection regulations. NFPA 70B Table 130.7(C)(16) Hazard Risk Category 2 personal protective equipment is to be worn by all persons

working on or with the inverter. Unauthorized persons may not operate the inverter and must keep at a distance from the inverter. No reconstruction, modification or installation of additional components may be carried out on the inverter without the

express consent of SMA America, LLC. The inverter must not be operated with its doors open. The inverter must not be opened when it is raining or when humidity exceeds 95%. The inverter must not be operated with any technical defects. For safety reasons, it is forbidden to modify the product or install components that are not explicitly recommended or

distributed by SMA. Only use the inverter in accordance with the information provided in the enclosed documentation. Any other application

may cause personal injury or property damage. The enclosed documentation is an integral part of this product.

• Read and observe the documentation.

• Keep the documentation in a convenient place for future reference.

2.2 Safety Precautions

This section contains safety precautions that must be observed at all times when working on or with the product. To prevent personal injury or property damage and to ensure long-term operation of the product, read this section carefully and follow all safety precautions at all times.

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Danger to life from electric shock due to live voltage

High voltages are present in the live components of the inverter. Touching live components results in death or serious injury due to electric shock.

• When working in a high contact-risk environment, wear Hazard Risk Category 2 personal protective equipment.

• Do not touch live components.

• Follow the instructions precisely.

• Observe all safety messages on the product and in the documentation.

• Observe all safety precautions of the module manufacturer.

• Before any work on the inverter is performed, always disconnect the following components from voltage sources if live voltage is not absolutely necessary:

– Line voltage for grid feed-in – Internal power supply – DC voltage from the PV array – Additional external voltages, e.g. control signals of a control room

• Ensure that no disconnected devices can be reconnected.

• After disconnecting the inverter from voltage sources, wait at least 15 minutes for the capacitors of the inverter to discharge completely.

• Always check that no voltage is present in any of the components before working on the inverter.

• Ground and short-circuit the device.

• Cover or safeguard any adjacent live components.

Danger to life from electric shock due to live DC cables

DC cables connected to PV modules that are exposed to sunlight are live. Touching live components results in death or serious injury.

• Wear Hazard Risk Category 2 personal protective equipment for all work on the inverter.

• Prior to connecting the DC cables, ensure that the DC cables are voltage-free.

Danger to life from electric shock due to ground fault

If a ground fault has occurred, parts of the plant that are supposedly grounded may in fact be live. Touching incorrectly grounded components can result in death or very serious injuries from electric shock.

• Ensure that no voltage is present before touching any components of the PV plant.

• Wear Hazard Risk Category 2 personal protective equipment for all work on the inverter.

Danger to life from electric shock when entering the PV field

Ground fault monitoring with GFDI and Advanced Remote GFDI does not provide protection from injury when GFDI is activated. PV modules grounded by GFDI discharge voltage to ground. Entering the PV field may lead to lethal electric shocks.

• Before entering the PV field, switch the PV array to insulated operation.

• Ensure that the insulation resistance of the PV array is greater than 1 k Ω .

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Danger to life from electric shock if the inverter is damaged

Operating a damaged inverter can lead to hazardous situations that result in death or serious injuries due to electric shock.

• Only use the inverter when it is technically faultless and in an operationally safe state.

• Regularly check the inverter for visible damage.

• Make sure that all external safety equipment is freely accessible at all times.

• Make sure that all safety equipment is in good working order.

• Wear Hazard Risk Category 2 personal protective equipment for all work on the inverter.

Danger to life from electric shock even if the inverter is disconnected on the AC and DC sides

The precharge unit of the option "Q at Night" is also live if the AC contactor and the DC switch are open. Touching live components of this assembly will result in death or serious injury.

• Do not touch live components.

• Do not remove protective covers.

• Observe the warning messages.

• Wear Hazard Risk Category 2 personal protective equipment.

Danger to life from electric shock when the inverter is not locked

If the inverter is not locked, this means that unauthorized persons have access to components carrying lethal voltages. Touching live components may result in death or serious injury due to electric shock.

• Always close and lock the inverter.

• Remove the keys from the door locks and from the key switch.

• Keep the keys in a safe place.

• Ensure that unauthorized persons have no access to the PV plant.

Danger to life due to blocked escape routes

In hazardous situations, blocked escape routes can lead to death or serious injury. Opening the doors of two inverters located opposite each other blocks the escape route. It is imperative that the escape route is freely accessible at all times.

• An escape route of at least 3 ft. (915 mm) width must be available at all times. Make sure the minimum passage

width of the route meets local standards.

• Do not place any objects in the escape route path.

• Remove all tripping hazards from the escape routes.

• If two inverters have been installed facing each other, never open the doors of both inverters simultaneously.

Risk of fire due to failure to observe torque specifications on live screw connections

Failure to follow the specified torques reduces the ampacity of the live screw connections so that the contact resistances increase. This can cause components to overheat and catch fire.

• Ensure that live screw connections are always executed with the exact torques specified in this document.

• Use suitable tools when working on the device.

• Avoid repeated tightening of live screw connections, as this may result in inadmissibly high torques.

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Risk of burns due to hot components

Some components of the inverter can become very hot during operation. Touching these components can result in burn injuries.

• Observe safety messages on the components.

• During operation, do not touch any components marked with such messages.

• After disconnecting the plant from voltage sources, wait until any hot components have cooled down sufficiently.

• Wear Hazard Risk Category 2 personal protective equipment for all work on the inverter.

Damage to the components due to dust or moisture penetration

Dust intrusion or moisture penetration can damage the inverter or impair its functionality.

• Do not open the inverter during rainfall or humidity of more than 95%.

• Only maintain the inverter when the environment is dry and free of dust.

• Do not operate the inverter while the door is open.

• If present, connect the external supply voltage after having set up and installed the inverter.

• Switch on the circuit breaker of the external supply voltage as well as the circuit breakers of the 24 V circuits. This will activate the heating and interior fans, which will then switch on automatically.

• Mount all panels of the inverter when interrupting the installation process or commissioning.

•Close and lock the inverter.

Damage to electronic components due to electrostatic discharge

Electrostatic discharge can damage or destroy electronic components.

• Observe the ESD safety regulations when working on the device.

• Wear Hazard Risk Category 2 personal protective equipment for all work on the devices.

• Discharge electrostatic charge by touching uncoated, grounded enclosure parts, e.g. at the PE connection on the doors. Only then is it safe to touch any electronic components.

2.3 Personal Protective Equipment

Always wear the personal protective equipment recommended by SMA America, LLC when working on the inverter. All clothing should be in accordance with NFPA 70E Section 130.7. Appropriate Insulated gloves for shock protection in accordance with NFPA 70E Section 130.7(C), rated at least 1000V shall be worn as required.

Any other prescribed protective equipment must also be used. When carrying out work on live parts of the inverter, protective equipment of at least Hazard Risk Category 2 is required in accordance with NEMA NFPA 70E, Table

130.7(C)(16).

Hazard Risk Category 2 protective equipment required

In accordance to NFPA 70E, an arc flash hazard risk analysis has been performed by SMA, and appropriate Arc Flash Hazard labels stating the required Personal Protective Equipment (PPE) for exposed, energized interaction with the equipment, are installed. Hazard Risk Category 2 PPE is the requirement for all routine maintenance, diagnostics, and commissioning activities as described in the SMA protocols. Areas within the machine also exist that cannot, under any circumstances, be exposed while energized.

For additional information, please contact the SMA Service Line.

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2.4 Symbols on the Sunny Central Inverter

Symbol Explanation

DC current

Earth Ground

AC current

On position of the AC Disconnect

Off position of the AC Disconnect

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2.5 Labels on the Sunny Central Inverter

This section describes the positions of the labels on the inverter. The warning labels identify potentially hazardous areas or components. Familiarize yourself with the warning labels and their positions before beginning work on the inverter.

2.5.1 Inverter without integrated DC switch

Figure1: Safety messages on the inverter

Position SMA order number Description

A 86-0043464 Warning label general SC-US EN

86-430042 Warning label Arc Flash Hazard Protection

B 86-00480030 Only with order option AC Disconnect: Photovoltaic System AC

Disconnect

C 86-00480020 Warning label Arc Flash

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Position SMA order number Description

D 86-0043474 Warning label SC-US external transformer EN

E 86-004300 Warning label, Burn Hazard, Hot surface

F 86-0043472 Only for order option DC fuses: Warning label SC-US DC fuses

EN/ES

86-0043473 Only for order option DC fuses: Warning label SC-US DC fuses

EN/FR

G ‒ Type label

H ‒ Label control supply voltage

I 86-10867027 For positive grounding: 1,000 V PV‒

86-430045 For positive grounding: 600 V PV‒*

86-10867028 For negative grounding: 1,000 V PV+

86-430044 For negative grounding: 600 V PV+*

Q 86-0043462 ABC 60Hz

86-101300.1 ABC 50 Hz

L 86-0043470 Warning label SC-US Conductors, EN-FR

86-0043469 Warning label SC-US Conductors, EN-ES

M 86-0043460 Grounding Electrode Terminal

N 86-10867027 For negative grounding or insulated: 1,000 V PV‒

86-430045 For negative grounding or insulated: 600 V PV‒*

86-10867028 For positive grounding or insulated: 1,000 V PV+

86-430044 For positive grounding or insulated: 600 V PV+*

O 86-108680046 Warning label SC US capacitors C1-C3, C6 optional EN/FR

86-108680047 Warning label SC US capacitors C1-C3, C6 optional EN/ES

P 86-0043476 Warning label, SC US stack capacitors EN/ES

86-0043477 Warning label, SC US stack capacitors EN/FR

* For Sunny Central 500CP-US 600V

Replacing warning labels

Missing or damaged warning labels must be replaced. The warning labels can be ordered from SMA using the SMA order numbers listed above.

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2.5.2 Inverter with integrated DC switch

Figure 2: Warning labels on the Sunny Central inverter

Position SMA order number Description

A 86-0043464 Warning label general SC-US EN

86-430042 Warning label Arc Flash Hazard Protection

B 86-0033325 Label "Closed"

C 86-00480030 Label "Photovoltaic System AC Disconnect"

D 86-101400.1 Label "DC Switch"

E 86-0033324 Label "Open"

F 86-00480020 Warning label Arc Flash

G 86-0043474 Warning label SC-US external transformer EN

H 86-0033326 Warning label Electric Shock due to Live Voltage EN/ES

86-0033327 Warning label Electric Shock due to Live Voltage EN/FR

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Position SMA order number Description

I 86-004300 Warning label, Burn Hazard, Hot surface

K 86-0043472 Only for order option DC fuses:

Warning label SC-US DC fuses EN/ES

86-0043473 Only for order option DC fuses:

Warning label SC-US DC fuses EN/FR

L 86-0033321 Warning label Electric Shock Hazard EN/FR

86-0033322 Warning label Electric Shock Hazard EN/ES

M 86-0033329 Warning label Danger: Do not pull out fuses under load EN/FR

86-0033328 Warning label Danger: Do not pull out fuses under load EN/ES

N ‒ Type label

O ‒ Label control supply voltage

P 86-10867027 For positive grounding: 1,000 V PV‒

86-430045 For positive grounding: 600 V PV‒*

86-10867028 For negative grounding: 1,000 V PV+

86-430044 For negative grounding: 600 V PV+*

Q 86-0043462 ABC 60 Hz

86-101300.1 ABC 50 Hz

R 86-0043470 Warning label SC-US conductors, EN-FR

86-0043469 Warning label SC-US conductors, EN-ES

S 86-0043460 Grounding electrode terminal

T 86-10867027 For negative grounding or insulated: 1,000 V PV‒

86-430045 For negative grounding or insulated: 600 V PV‒*

86-10867028 For positive grounding or insulated: 1,000 V PV+

86-430044 For positive grounding or insulated: 600 V PV+*

U 86-108680046 Warning label SC US capacitors C1-C3, C6 optional EN/FR

86-108680047 Warning label SC US capacitors C1-C3, C6 optional EN/ES

V 86-0043476 Warning label, SC US stack capacitors EN/ES

86-0043477 Warning label, SC US stack capacitors EN/FR

* For Sunny Central 500CP-US 600V

Replacing Warning Labels

Replace missing or damaged warning labels. The warning labels can be ordered from SMA using the SMA order numbers listed above.

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3 Product Description SMA America, LLC

3 Product Description

This section will give you an overview of the inverter and its components.

3.1 Plant Overview

An AC Disconnect and DC Disconnect must be installed in accordance with NEC ANSI/NFPA 70 and CEC. The inverter can be optionally ordered with an integrated AC Disconnect and an integrated DC Switch. Both devices are

designed to be used with a lockout device to secure the inverter against reconnection during service. With the AC Disconnect, the inverter can be disconnected from the utility grid simply and safely. This option does not require an additional AC Disconnect Unit on the AC side.

With the DC Switch, the inverter can be disconnected from the PV array. If the inverter does not have an integrated DC Switch, an external DC Disconnect must be installed in accordance with NEC ANSI/NFPA 70 and CEC, in order to be able to disconnect the inverter from the PV array. This allows you to easily and safely disconnect the inverter as needed. In some jurisdictions, additional external disconnecting means may be required for servicing of the DC input fuses. SMA recommends an early review with the AHJ to identify their requirements for the PV System.

Sunny Central Inverter with Integrated AC Disconnect and Integrated DC Switch

Figure 3: Principle of a grid-connected PV plant with a Sunny Central inverter with integrated AC Disconnect and DC Switch

Position Description

A PV array

B String-Combiner Box

C Inverter with integrated AC Disconnect and DC Switch

DExternal transformer

EUtility grid

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Sunny Central Inverter with Integrated AC Disconnect and external DC Disconnect

Figure 4: Principle of a grid-connected PV plant with an external DC Disconnect and a Sunny Central inverter with integrated AC Disconnect

Position Description

A PV array

BString-Combiner Box

C Inverter with integrated AC Disconnect

D DC Disconnect Unit

E External transformer

FUtility grid

Sunny Central Inverter with External AC Disconnect and External DC Switch

As an option, the AC circuit breaker can be mounted externally.

Circuit breaker

The unit is provided with a UL listed circuit breaker on the output rated 1,600 A for branch circuit protection. If the circuit breaker shall be located externally to secure the AC path, you have to use the same type of circuit breaker (ABB Emax E2B-A with 42 kA rated short-circuit current, ABB Emax E2N-A with 65 kA rated short-circuit current or ABB Emax E2H-A with 85 kA rated short-circuit current and 1,600 A continuous current rating each).

Figure 5: Principle of a grid-connected PV plant with a Sunny Central inverter and external AC / DC Disconnect Unit

Position Description

A PV array

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Position Description

B String-Combiner Box

C Inverter without Integrated AC Disconnect and without integrated DC Switch

D AC / DC Disconnect Unit

EExternal transformer

FUtility grid

3.2 Sunny Central Inverter

3.2.1 Design of the Sunny Central Inverter

Figure 6: Sunny Central Inverter (example)

Position Description

A Inverter cabinet

B Interface cabinet

C Touch display

DKey switch

E Service interface

F Integrated AC Disconnect*

G Integrated DC Switch*

* depending on the option ordered

3.2.2 Type Label

You can identify the inverter by the type label. Type labels are attached at the top right on the inside of the interface cabinet and on the top left side of the inverter cabinet. You will find the following information on the type label:

•Device type

• Serial number

•Production version

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•Production date

• Device-specific data

Reading the serial number

You can read the serial number without opening the inverter. The serial number can be found on the roof of the inverter at the top left. You can also read the serial number from the display.

Reading the firmware version

You can read the version number of the firmware from the inverter and the display via the user interface of the SC-COM or on the display.

Symbols on the Type Label

Symbol Description Explanation

Danger to life due to high voltages

Risk of burns due to hot surfaces The product can become hot during operation. Avoid contact

Observe the documentation. Observe all documentation that is supplied with the product.

The product operates at high voltages. All work on the product must be carried out by qualified persons only.

during operation. Allow the product to cool down sufficiently before carrying out any work. Wear personal protective equipment such as safety gloves.

Evaluated to the requirements of the Underwriters Laboratories Standard for Safety for Inverters, Converters, Controllers and Interconnection System Equipment for Use With Distributed Energy Resources, UL 1741.

The inverter has been additionally evaluated by Underwriters Laboratories to CAN/CSA C22.2 No. 107.1-1, "General Use Power Supplies".

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3.2.3 Operating States

The inverter cycles through various states during operation:

Figure 7: Principle overview of the operating states of the inverter

Designation Description

Stop The inverter is switched off. Stop or Remote shutdown active appears in the touch

display. If the key switch is set to Start, the inverter switches to the "Grid monitoring" operating state.

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Designation Description

Grid monitoring The inverter is in the "Grid monitoring" operating state. Waiting for valid AC grid

appears in the touch display. The grid limits will be monitored continuously from now on. If a grid fault does not occur

during the grid monitoring time, the AC contactor closes and the inverter switches to the "Grid monitoring time reached" operating state.

If the grid limits are exceeded during the monitoring time, the inverter will restart "Grid monitoring".

With the option "Q at Night", the inverter switches to the "Q at Night" operating state if the time specified in the parameter PvStrT has elapsed and the start voltage PvVtgStrLevMin has not been reached (see Section 8.3 "Q at Night", page 65).

Grid monitoring time reached

The inverter is in the "Grid monitoring time reached" operating state. Waiting for PV voltage or Waiting for electric utility company appears on the touch display.

If the input voltage V the time specified in the PvStrT parameter elapses. If the input voltage V

exceeds the start voltage PvVtgStrLevMin, the inverter waits until

does not fall

below the start voltage PvVtgStrLevMin during this time, the inverter checks whether the utility grid is available. If a valid utility grid is available, the inverter switches to the operating state "Startup".

The start voltage PvVtgStrLevMin must be adjusted to conform with the PV array connected to the inverter.

Startup The inverter is in the "Startup" operating state. Operation appears in the touch display.

The inverter moves to its initial operating point and begins the grid feed-in process.

MPP load operation In the MPP operating state, the inverter feeds power into the utility grid and operates

permanently at the maximum power point (MPP). Operation and the rate of power feed-in are shown in the touch display.

If the measured power P

during the time interval PvPwrMinT is less than the minimum

feed-in voltage PvPwrMin or the key switch is set to Stop, the inverter switches to the "Shutdown" operating state.

With the order option "Q at Night", the inverter switches to the operating state "Q at Night" if the measured power P

during the time interval PvPwrMinT is less than the minimum

feed-in power PvPwrMin (see Section 8.3 "Q at Night", page 65).

Shutdown The inverter is in the "Shutdown" operating state. Operation appears in the touch display.

If the key switch is set to Stop, the inverter switches to the "Stop" operating state. The AC contactor and the DC switching device open automatically.

If the inverter shuts down because the feed-in conditions are no longer met, the inverter switches to the "Grid monitoring" operating state.

Fault If a disturbance occurs during operation, the inverter switches off and displays Fault and

the disturbance in the touch display (see Section 11 "Troubleshooting", page 77).

3.2.4 Touch Display

Different kinds of inverter data can be viewed on the touch display. Settings such as language, time and brightness can be set, but inverter parameters cannot be set from the touch display.

The display area is activated by touching the touch display. Tapping the symbols on the touch display activates the corresponding functions. If the touch display is not touched for five minutes, it will shut off.

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3.2.5 Key Switch

The key switch is used to switch the inverter on and off.

Switch position "Start"

If the key switch is turned to Start, a motor drive automatically switches on the DC switching device and the inverter switches from the operating state "Stop" to the operating state "Grid monitoring". If there is sufficient irradiation and a valid utility grid connection, the inverter switches to feed-in operation. If there is insufficient irradiation and the input voltage is therefore too low, the inverter remains in the operating state "Grid monitoring".

With the "Q at Night" order option, the inverter supports the utility grid with reactive power if the input voltage is insufficient.

Switch position "Stop"

If the key switch is turned to Stop while the inverter is in the operating state "Grid monitoring", a motor drive automatically switches off the DC switching device. The inverter switches to the operating state "Stop".

If the key switch is turned to Stop when the inverter is in the operating state "MPP load operation", the inverter switches to the operating state "Shutdown". Once the shutdown is complete, the AC contactor and the DC switching device are switched off automatically and the inverter switches to the operating state "Stop".

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3.2.6 Integrated AC Disconnect

Depending on the option ordered, the Sunny Central CP-US inverter may be fitted with an integrated AC Disconnect. The AC Disconnect enables you to disconnect the inverter from the AC grid in the event an emergency and for service and maintenance work.

Figure 8: AC Disconnect

Position Description

A OFF button

B ON button

C Spring status indicator

D Position indicator

3.2.7 Integrated DC Switch

Depending on the option ordered, the Sunny Central CP-US inverter may be fitted with an integrated DC Switch. The DC Switch enables you to disconnect the inverter from the PV array in the event an emergency and for service and maintenance work. Despite disconnecting the integrated DC Switch, voltages are still present on the DC fuses and the inverter busbars. Touching the DC fuses or the busbars will result in death or very serious injuries from electric shock.

Figure 9: Integrated DC Switch

Position Description

A Green light repeater

The DC Switch is closed.

BDC switch

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Position Description

C Red light repeater

The DC Switch is open.

3.3 Sunny Central Communication Controller

The Sunny Central Communication Controller (SC-COM) is the central communication interface of the inverter. The SC-COM establishes the connection between the inverter and the operator.

Figure 10: SC-COM

Position Description

ASC-COM

The SC-COM collects all data from the connected devices. The SC-COM enables monitoring, parameterization and remote diagnosis of the inverter via computer, as well as power control by the grid operator.

These various tasks performed by the SC-COM can be organized in two separate networks:

• Monitoring network

This network is used for monitoring, parameterization and remote diagnosis.

•Control network

This network is used by the Power Plant Controller to specifications issued by the grid operator relating to grid management services to the inverter. The control network is used exclusively for grid management services which are thus transmitted and implemented within a specified time period.

If only a low bandwidth is required for monitoring the PV plant, the network operator instructions can also be

transmitted via the monitoring network. In this case, only one network is necessary. The SC-COM makes all data collected available to the operator via an Ethernet connection. Copper cables or optical fibers can be used for the networks.

Type of communication of the PV plant

The interface of the SC-COM is set by default to COM3 and the baud rate to 115,200. Do not modify these settings.

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