Table of contents
SMA Solar Technology AG
Operating manualSTP50-4x-BE-en-234
Table of contents
1 Information on this Document................................................. 7
1.1 Validity ........................................................................................................................ 7
1.2 Target Group.............................................................................................................. 7
1.3 Content and Structure of this Document ................................................................... 7
1.4 Levels of warning messages ...................................................................................... 7
1.5 Symbols in the Document .......................................................................................... 8
1.6 Typographical Elements in the Document................................................................. 8
1.7 Designations in the Document................................................................................... 8
1.8 Additional Information ............................................................................................... 8
2 Safety ........................................................................................ 10
2.1 Intended Use .............................................................................................................. 10
2.2 IMPORTANT SAFETY INSTRUCTIONS.................................................................... 10
3 Scope of Delivery..................................................................... 16
4 Product Overview.................................................................... 17
4.1 Product Description .................................................................................................... 17
4.2 Symbols on the Product ............................................................................................. 18
4.3 Interfaces and Functions ............................................................................................ 20
4.4 LED Signals................................................................................................................. 25
4.5 Display messages....................................................................................................... 26
4.6 System Overview ....................................................................................................... 27
4.6.1 Circuitry Overview.................................................................................. 28
4.6.2 Communication Overview...................................................................... 29
5 Mounting .................................................................................. 30
5.1 Requirements for Mounting ....................................................................................... 30
5.2 Mounting the product ................................................................................................ 33
6 Electrical Connection................................................................ 36
6.1 Overview of the Connection Area ............................................................................ 36
6.2 AC Connection........................................................................................................... 36
6.2.1 Requirements for the AC Connection .................................................... 36
6.2.2 Connecting the Inverter to the Utility Grid............................................. 38
6.3 Connecting the Network Cables............................................................................... 40
6.4 Connecting the Multifunction Relay .......................................................................... 42
6.4.1 Procedure for connecting the multifunction relay.................................. 42
6.4.2 Operating Modes of the Multifunction Relay ....................................... 42
6.4.3 Connection Options................................................................................ 43
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