Operating Manual

4.6 Preparing the electrical connections for the parallel mode .............................. 46
4.7 Connection concept of multiple BMZ ESS 7.0 batteries with one or more battery
inverters .................................................................................................................. 47
4.7.1 Communication ................................................................................................................... 47
4.7.2 Output contact .................................................................................................................... 49
4.7.3 Laying the power cable ........................................................................................................ 53
4.8 Configuration of the ESS parallel mode .............................................................. 54
4.8.1 1-phase operation of a SMA Sunny Island inverter on 1 ESS battery .................................. 54
4.8.2 1-phase operation of a SMA Sunny Island inverter on 2 ESS batteries ............................... 54
4.8.3 1-phase operation of a SMA Sunny Island inverter on 3 ESS batteries ............................... 55
4.8.4 3-phase operation of a SMA Sunny Island inverter on 3 ESS batteries ............................... 56
4.8.5 3-phase operation of a SMA Sunny Island inverter on 4 ESS batteries ............................... 57
4.8.6 3-phase operation of a SMA Sunny Island inverter on 5 ESS batteries ............................... 58
4.8.7 3-phase operation of a SMA Sunny Island inverter on 6 ESS batteries ............................... 59
4.9 Configuration of the ESS battery ......................................................................... 60
4.9.1 System structure .................................................................................................................. 60
4.9.2 Addressing the batteries ...................................................................................................... 60
4.10 Definition of the battery mode during commissioning and parameter
configuration .......................................................................................................... 60
4.10.1 Single: .................................................................................................................................. 60
4.10.2 Master: ................................................................................................................................ 60
4.10.3 Slave:.................................................................................................................................... 60
4.11 Work step sequence to configure the parameters of batteries ........................ 61
4.12 Work step sequence to commission the batteries ............................................ 62
4.13 Configuration of firmware for parallel mode ..................................................... 63
4.13.1 Setting the master battery mode ....................................................................................... 63
4.13.2 Setting the master battery address ..................................................................................... 64
4.13.3 Setting the slave battery mode ........................................................................................... 65
4.13.4 Setting the slave battery address ........................................................................................ 65
4.14 Commissioning the parallel connection of multiple batteries .......................... 66
4.14.1 Switch-on sequence ............................................................................................................. 66
4.14.2 Stand-by mode of a slave battery: ....................................................................................... 66
4.14.3 Switch-on criterion of the slave battery: ............................................................................. 66
4.14.4 Example 1: ........................................................................................................................... 67
4.14.5 Example 2: ........................................................................................................................... 67
4.14.6 Example 3: ........................................................................................................................... 68
4.15 Checking the parallel connection of multiple batteries .................................... 69
4.15.1 Check the number of connected (detected) batteries ........................................................ 69
4.15.2 Check the number of batteries for which the main relay is closed ..................................... 70
4.16 Adding new batteries ............................................................................................ 70
4.17 Checking the connections of parallel battery systems ..................................... 71
4.17.1 Switching the battery storage system on and off ................................................................ 71
4.17.1 Configuring the parameters of the inverter ........................................................................ 73