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SMA SC 500HE-20 User Manual

Page 4

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Table of Contents

SMA Solar Technology AG

4

SCxxxHE-20-BE-BEN111210

Operating Manual

3.6.5

Decoupling Protection Ramp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3.6.6

Grid Management Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3.7

Active Islanding Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3.8

Serial Number and Device Type . . . . . . . . . . . . . . . . . . . . . . . 30

3.9

Symbols on the Sunny Central . . . . . . . . . . . . . . . . . . . . . . . . . 30

4

Setting Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

5

SC-COM Communication . . . . . . . . . . . . . . . . . . . . . . . . . . 34

5.1

Displaying Spot Values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

5.2

Changing Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

5.3

Setting Up the Sunny Central String-Monitor Controller . . . . . . 35

5.3.1

Setting the Parameters for String Current Monitoring in the PV Plant . . . . . . 35

5.4

Optional Settings for PV Plant Monitoring . . . . . . . . . . . . . . . . 37

5.4.1

Changing the Communication Period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

5.4.2

Changing the Monitoring Period. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

5.4.3

Assigning PV Strings to Various Measuring Channels. . . . . . . . . . . . . . . . . . 38

5.4.4

Assigning PV strings to Different Groups. . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

5.4.5

Setting the Tripping Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

5.4.6

Setting the Tolerance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

5.5

Reading the Measured Values . . . . . . . . . . . . . . . . . . . . . . . . . 39

5.5.1

Reading the Measured Values of the Groups. . . . . . . . . . . . . . . . . . . . . . . . 39

5.5.2

Reading the Measured Values for the Individual Measuring Channels . . . . 39

5.6

Setting the Remote Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . 40

5.7

Disconnecting "Fully Hermetic Protection" for

the Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

6

Setpoint for Active Power and Reactive Power. . . . . . . . 41

6.1

Active Power Limitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

6.1.1

Frequency-Independent Active Power Limitation Procedure . . . . . . . . . . . . . 41

6.1.2

Setting the Active Power Limitation Procedure and
Associated Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

6.1.3

"Off" Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

This manual is related to the following products: