Quick Installation Manual Alpha ESS Battery with SMA Flexible Storage System V1.0

Germany Alpha ESS Europe GmbH Tel.: +49 (0)6103 459 160-1 E-mail: europe@alpha-ess.de Web: www.alpha-ess.de Add: Paul-Ehrlich-Straße 1a 63225 Langen China Tel.: +86 (0) 512 68287609 E-mail: info@alpha-ess.com Web: www.alpha-ess.com Add: NW02, Nano Polis, No. 99 Jinji Lake Avenue, Industrial Park, Suzhou, 215123 Australia Alpha ESS Australia Pty. Ltd. Tel.: 1300968933 (Australia Only) E-mail: australia@alpha-ess.com Web: www.alpha-ess.com.au Add: Unit M601, 68Mcevoy St, Alexandria Nsw 2015 1

Copyright Statement This manual is under the copy right of Alpha ESS Co., Ltd., with all rights reserved. Please keep the manual properly and operate in strict accordance with all safety and operating instructions in this manual. Please do not operate the system without reading through the manual. 2

Content 1. Information on This Document... 4 1.1 Validity... 4 1.2 Content and Structure of This Document... 4 1.3 Target Group... 4 1.4 Reference Document... 4 2. Increased self-consumption (On-Grid system)... 5 2.1 System with One Sunny Island Inverter... 5 2.1.1 Circuit Overview... 5 2.1.2 Connecting the System... 6 2.2 System with Three Sunny Island Inverters... 8 2.2.1 Circuit Overview... 8 2.2.2 Connecting the Sunny Island... 9 2.2.3 Connecting Slave 1 and Slave 2... 10 2.3 Connecting the Sunny Home Manager... 11 2.4 Commissioning... 12 2.4.1 Procedure... 12 2.4.2 System configuration... 16 3 Off-Grid System with Sunny Island... 17 3.1 Single System... 17 3.1.1 Circuit Overview... 17 3.1.2 Connecting the System... 18 3.1.3 Commissioning... 20 3.2 Single-Cluster System... 24 3.2.1 Circuit Overview... 24 3.2.2 Connecting the Sunny Island... 26 3.2.3 Commissioning... 30 3.3 Multicluster System... 34 3.3.1 Circuit Overview... 34 3.3.2 Connecting the Sunny Island... 34 3.3.3 Commissioning... 34 3.3.4 Commission Checklist... 38 4. Appendix... 39 4.1 M4860 datasheet... 39 4.2 Power plug datasheet... 40 3

1. Information on This Document Smarten Your Energy 1.1 Validity This document is valid for the usage of Alpha ESS battery M4850 and M4860 in SMA Flexible Storage System, which apply to the following types of inverters. Manufacturer Type Notes SMA solar technology SMA solar technology SMA solar technology SMA solar technology SI3.0H SI4.4H SI6.0H SI8.0H This list is continuously updated, please visit our website: www.alpha-ess.com 1.2 Content and Structure of This Document Three parts are included in this document, the first part introduces the basic system wiring, the second part introduces on-grid system setting, and the third part introduces off-grid system setting. 1.3 Target Group This document summarizes the specific information of how to use Alpha ESS battery in SMA Flexible Storage System. Circuitry overviews provide the basic principle of how an SMA Flexible Storage System is connected. The structure of the document specifies the chronological sequence for configuration and commissioning. This document does not replace the documentation of the individual products. You will find details and help in the event of difficulties in the documentation of the respective product. 1.4 Reference Document Document title M4850/M4860 datasheet M4850/M4860 user manual Sunny island installation manual Sunny island user manual Document type Datasheet User manual Installation manual User manual 4

2. Increased self-consumption (On-Grid system) 2.1 System with One Sunny Island Inverter Smarten Your Energy 2.1.1 Circuit Overview Figure 1: Circuitry of the SMA Flexible Storage System for TN and TT systems 5

2.1.2 Connecting the System Connection the Sunny Island Figure 2: Connecting the Sunny Island inverter Position Designation Description/information A AC power cable Connection AC2 Gen/Grid terminals L, NTT, and PE Utility grid connection with a three-wire cable Conductor cross-section: 6 mm² to 16 mm² B Grounding conductor Terminal AC1 Loads/SunnyBoys terminal PE Additional grounding if the conductor cross-section of the AC power cable is less than 10 mm². C DC+ cable Battery connection D DC cable Conductor cross-section: 50 mm² to 95 mm² F Data cable to Sunny Remote Control Terminal Display G Speedwire network cable H Data cable to lithium-ion battery Terminal ComETH In order to connect the router/network switch, the Speedwire data module Sunny Island must be mounted in the Sunny Island (see Sunny Island Speedwire data module installation manual). The terminal ComETH is on the data module. Terminal ComSync In Connection of the BMS of the lithium-ion battery The communication bus must be connected to the lithium-ion battery and the terminator must remain plugged into the terminal ComSync Out. 6

Battery communication cable The PIN definition of the data cable to lithium-ion battery is shown as follow: Sunny Island Inverter Alpha ESS battery PIN Description PIN Description 4 CAN_H 7 CAN_H 5 CAN_L 2 CAN_L Smarten Your Energy Warning: Do not connect the other PINs in the battery communication cable to avoid damage the system. Power Meter The purchased electricity and feed-in meter should be installed between the Grid and Household consumptions, please note the direction of the meter. Figure 3: Connecting the SMA power meter If the Sunny Island inverter works with other brands on-grid inverters, another power meter as PV meter should be installed in the system, the four poles side of the PV meter should be connected with Gird, and the other side should be connected with the on-grid inverter. 7

2.2 System with Three Sunny Island Inverters 2.2.1 Circuit Overview Figure 4: SMA Flexible Storage System for TN and TT systems 8

2.2.2 Connecting the Sunny Island Figure 5: Connecting the master Position Designation Description/information A AC power cable Connection AC2 Gen/Grid terminals L, N TT, and PE Utility grid connection with a three-wire cable to the line conductor L1 Conductor cross-section: 6 mm² to 16 mm² B Grounding conductor Terminal AC1 Loads/SunnyBoys terminal PE Additional grounding if the conductor cross-section of the AC power cable is less than 10 mm². C DC+ cable Battery connection D DC cable Conductor cross-section: 50 mm² to 95 mm² F Data cable to Terminal Display Sunny Remote Control G Speedwire network cable Terminal ComETH In order to connect the router/network switch, the Speedwire data module Sunny Island must be mounted in the Sunny Island (see Sunny Island Speedwire data module installation manual). H Data cable to lithium-ion battery Terminal ComSync In Connection of the battery management of the lithium-ion battery. The communication bus must be connected to the lithium-ion battery and the terminator must remain plugged into the terminal ComSync In I Data cable for the internal communication in the cluster ComSync Out terminal Connection of internal communication bus of slave 1 9

2.2.3 Connecting Slave 1 and Slave 2 Figure 6: Connecting the Sunny Island inverter Position Designation Description/information A AC power cable Connection AC2 Gen/Grid terminals L, N TT, and PE Utility grid connection with a three-wire cable Conductor cross-section: 6 mm² to 16 mm B Grounding conductor Terminal AC1 Loads/SunnyBoys terminal PE Additional grounding if the conductor cross-section of the AC power cable is less than 10 mm². C DC+ cable Battery connection D DC cable Conductor cross-section: 50 mm² to 95 mm² E Data cable for the internal communication in the cluster Terminal ComSync In With slave 1: connection of internal communication bus of master With slave 2: connection of internal communication bus of slave 1 F Data cable for the internal communication in the cluster Terminal ComSync Out With slave 1: connection of internal communication bus after slave 2 With slave 2: Leave terminator plugged in. Slave 2 is connected to slave 1 only. 10

2.3 Connecting the Sunny Home Manager Figure 7: Connecting the Sunny Home Manager Requirements: All Speedwire devices must be connected to the same router. The router and the optional network switch must fully support Multicast. The router must support "Internet Enabled Devices" with the interfaces SIP and STUN. The most common routers and network switches support Multicast and "Internet Enabled Devices". 11

2.4 Commissioning 2.4.1 Procedure Check the wiring (See the Sunny Island inverter installation manual). Close all devices except the BatFuse. This protects all live components from being touched. Close the BatFuse and switch on all Sunny Island inverters: In systems with one Sunny Island, press the "On" button. In systems with three Sunny Island inverters, press and hold the "On" button on the master until an acoustic signal sounds. When the Sunny Remote Control shows <Init System>, Press and hold the button on the Sunny Remote Control. An acoustic signal sounds three times and the Sunny Remote Control displays the Quick Configuration Guide Turn the button on the Sunny Remote Control and select New System. Press the button. This confirms your selection of New System. 12

An entry confirmation prompt appears. Set Y and press the button. Set the date. Set the time. Set OnGrid. Set the battery type. LiIon_Ext-BMS: lithium-ion battery Set the battery capacity for ten-hour electric Ensure that the function SelfConsOnly is set. 13

Set the number of Sunny Island inverters in the system: 1Phase: system with one Sunny Island inverter 3Phase: system with three Sunny Island inverters If the country data set of the Sunny Island is VDE-AR-4105, set the type of feed-in for the PV system If the country data set of the Sunny Island is AS4777, confirm the basic configuration with Y. Confirm the basic configuration with Y. Asymmetric: The installation site is located in Germany and at least one PV inverter feeds in asymmetrically on a single line conductor. Symmetric: The installation site is either located outside of Germany or all PV inverters feed in symmetrically on three line conductors. Wait until the upper LED (inverter LED) on slave 1 is flashing and the Sunny Remote Control is displaying To identify Slave1, press Tss on the Slv. Set the line conductor to which the Sunny Island is connected: Confirm the basic configuration with Y. Press the start-stop button on slave 1. L1: connection to line conductor L1 L2: connection to line conductor L2 L3: connection to line conductor L3 Confirm the basic configuration with Y. Wait until the upper LED (inverter LED) on slave 2 is flashing and the Sunny Remote Control is displaying To identify Slave2, press Tss on the Slv. 14

Press the start-stop button on slave 2 The basic configuration is complete. If an SD memory card is inserted in the Sunny Remote Control, the message Do not remove MMC/SD memory card... appears. Close the circuit breaker F1 and the residual-current device F2 in the distribution board and leave the Sunny Island switched on, but do not start it. 15

2.4.2 System configuration Setting battery parameters Parameters Description Value 262.01 ProtResSOC Range for protection in the event of deep discharge as a percentage of the battery capacity 3 262.02 BatResSOC Range for protection against deep discharge as a percentage of the battery capacity 3 262.03 BUResSOC Range for the battery backup function on the longest day of the year as a percentage of the battery capacity 0 262.04 PVResSOC Range for maintaining the state of charge of the battery as a percentage of the nominal capacity 5 262.05 MinSlfCsmpSOC Range for increased self-consumption on the shortest day of the year as a percentage of the battery capacity 90 Note: please set the parameters in Standby mode. Change Grid code Parameters Description Value 270.01 Auth.Code Entry of the SMA Grid Guard code / 232.01 Country Country data set (protected by SMA Grid Guard) VDE-AR-N 4105 As4777 Battery Configuration Figure 8: Connecting the power meter PIN No. Top battery Middle battery Bottom battery PIN1 down down down PIN2 down down up PIN3 up up up PIN4 down down down 16

3 Off-Grid System with Sunny Island Smarten Your Energy 3.1 Single System 3.1.1 Circuit Overview Figure 9: Single system 17

3.1.2 Connecting the System Connecting the system Smarten Your Energy Figure 10: Connecting the Sunny Island inverter Position Designation Description/information A AC power cable Connection AC2 Gen/Grid terminals L, N TT, and PE Utility grid connection with a three-wire cable Conductor cross-section: 6 mm² to 16 mm² B Grounding conductor Terminal AC1 Loads/SunnyBoys terminal PE Additional grounding if the conductor cross-section of the AC power cable is less than 10 mm². C DC+ cable Battery connection D DC cable Conductor cross-section: 50 mm² to 95 mm² E Control cable, generator Sunny Island: Relay1 NO and Relay1 C terminals Conductor cross-section: 0.2 mm² to 2.5 mm² G Control cable, load shedding Sunny Island: Connect the control cable to the terminals Relay2 NO and BatVtgOut. Inside the Sunny Island inverter, connect terminal Relay2 C and BatVtgOut+. Conductor cross-section: 0.2 mm² to 2.5 mm² H RS485 communication bus Sunny Island: at SI-COMSMA.BGx terminal ComSmaOut Connection to other nodes, e.g., PV inverter A terminator must terminate the RS485 communication bus on the last bus node. I Data cable to Sunny Remote Sunny Island: Display terminal Control display K Data cable to Sunny Island Sunny Island: ComSync In terminal An additional data cable Charger must be connected from the terminal ComSync Out to the battery only when lithium-ion batteries are used. The communication bus must be equipped with a terminator on 18

both ends. L RS485 communication bus Sunny Island: at SI-COMSMA.BGx terminal ComSmaIn Sunny WebBox: terminal SMACOM - Data cable to lithium-ion battery Only with lithium-ion batteries: additional data cable on terminal ComSync In Connecting the Sunny Web Box Figure 11: Connecting the Sunny Web Box Position Designation Description/information A Jumper J1A Connection AC2 Gen/Grid terminals L, N TT, and PE Utility grid connection with a three-wire cable Conductor cross-section: 6 mm² to 16 mm² B Jumper J1B and J1C Terminal AC1 Loads/SunnyBoys terminal PE Additional grounding if the conductor cross-section of the AC power cable is less than 10 mm². C SMACOM Terminal RS485 2: Signal Data+ (A), color coding of the insulated conductor: green with white stripes 5: Signal GND, color coding of the insulated conductor: orange with white stripes 7: Signal Data (B), color coding of the insulated conductor: white with green stripes 19

3.1.3 Commissioning Procedure Smarten Your Energy Check the wiring Close all devices except the BatFuse. This protects all live components from being touched. Close the BatFuse and press and hold the "On" button on each master until you hear an acoustic signal. When the Sunny Remote Control shows <Init System>, Press and hold the button on the Sunny Remote Control. An acoustic signal sounds three times and the Sunny Remote Control displays the Quick Configuration Guide. Turn the button on the Sunny Remote Control and select New System. Press the button. This confirms your selection of New System. An entry confirmation prompt appears. 20

Set Y and press the button. Set the date. Set the time. Set OffGrid. Set the battery type: LiIon_Ext-BMS: lithium-ion battery Set the battery capacity for ten-hour electric Set the grid voltage and power frequency of the stand-alone grid: 230V_50Hz / 220V_60Hz: Set 1Phase: 21

Set the type of energy sources: PvOnly: no generator is connected to terminalac2 of the Sunny Island inverter. Gen: one generator is connected to terminal AC2 of thesunny Island inverter. Set the maximum generator current per line conductor for continuous operation. Confirm the basic configuration with Y.. Decline Setup Slaves? with N. The basic configuration is complete. If an SD memory card is inserted into the Sunny Remote Control, the message Do not remove MMC/SD card... is displayed and the SD memory card is integrated in the file system. Commission the off-grid system. 22

Setting battery parameters Parameters Description Value 223.05 BatPro1Soc SOC for battery protection mode level 1 in % (expert mode) 10 223.06 BatPro2Soc SOC for battery protection mode level 2 in % (expert mode) 5 223.07 BatPro3Soc SOC for battery protection mode level 3 in % (expert mode) 3 Note: please set the parameters in Standby mode. Battery Configuration The same as the configuration in on-grid mode, please refer to figure 17 in 2.4.2. 23

3.2 Single-Cluster System 3.2.1 Circuit Overview Figure 12: Circuitry overview single-phase single-cluster system, only possible with SI6.0H-11 or SI8.0H-11 24

Figure 13: Circuitry overview three-phase single-cluster 25

3.2.2 Connecting the Sunny Island Connecting the Master Smarten Your Energy Figure 14: Connecting the master in the single-cluster system Position Designation Description/information A AC power cable of the Sunny Island: connection to AC1 Loads/SunnyBoys terminals L, stand-alone grid N,andPE Stand-alone grid: connect master to line conductor L1. For a single-phase system, the cable length and the conductor cross-section must be identical on each Sunny Island. Conductor cross-section: maximum 16 mm² B AC power cable of the Sunny Island: terminal AC2Gen/Grid terminals L, N, and PE. generator Generator: connect master to line conductor L1. Conductor cross-section: maximum 16 mm² For a single-phase system, the cable length and the Conductor cross-section must be identical on each Sunny Island. The Sunny Island must be connected via a grounding conductor on the terminal AC1 or AC2 to the ground potential. The conductor cross-sectionof the grounding conductor must be 10 mm² or larger. If the conductor cross-section is smaller, an additional grounding conductor on the enclosure with the conductor cross-section of the AC power cable must connect the Sunny Island with the ground potential. C DC+ cable Battery terminal 26

D DC cable For a single-phase system, the cable length and the conductor cross-section must be identical on each Sunny Island. Conductor cross-section: 50 mm² to 95 mm² E Control cable, generator Sunny Island: terminals Relay1 NO and Relay1 C Conductor cross-section: 0.2 mm² to 2.5 mm² F Measuring cable of the battery temperature sensor Sunny Island: terminal BatTmp You only have to connect a battery temperature sensor if lead-acid batteries are used. Mount the battery temperature sensor in the middle of the battery terminal, G Control cable, loadshedding Sunny Island: Connect control cable to terminals Relay2 NO and BatVtgOut. Inside the Sunny Island inverter, connect terminals Relay2 C and BatVtgOut+. Conductor cross-section: 0.2 mm² to 2.5 mm² H RS485 communication bus Sunny Island: at SI-COMSMA.BGx terminal ComSmaOut Connection to other nodes, e.g., PV inverter A terminator must terminate the RS485 communication bus on the last bus node I Data cable to Sunny Sunny Island: Display terminal Remote Control display K Data cable for the internal communication in the cluster Sunny Island: ComSync Out terminal Only with lithium-ion batteries: additional data cable on terminal ComSync In The communication bus must be equipped with a terminator on both ends. L RS485 communication bus Sunny Island: at SI-COMSMA.BGx terminal ComSmaIn Sunny WebBox: terminal SMACOM Data cable to lithium-ionbattery Only with lithium-ion batteries: additional data cable on terminal ComSync In 27

Connecting the Slaves Figure 15: Connecting the slaves in a single-cluster system Position Designation Description/information A AC power cable of the Sunny Island: connection to AC1 Loads/SunnyBoys stand-alone grid terminals L, N, and PEStand-alone grid: Connect slave 1 to line conductor L2, and connect slave 2 to line conductor L3. For a single-phase system, the cable length and the conductor cross-section must be identical on each Sunny Island. Conductor cross-section: maximum 16 mm² B AC power cable of the Sunny Island: connection of generator to AC2 generator Gen/Grid terminals L, N,and PEGenerator: connect slave 1 to line conductor L2, connect slave 2 to line conductor L3. Conductorcross-section: maximum 16 mm² For a single-phase system, the cable length and the conductor cross-section must be identical on each Sunny Island. The Sunny Island must be connected via a grounding conductor on theterminal AC1 or AC2 to the ground 28

potential. The conductor cross-section ofthe grounding conductor must be 10 mm² or larger. If the conductorcross-section is smaller, an additional grounding conductor on the enclosurewith the conductor cross-section of the AC power cable must connect the Sunny Island with the ground potential. C DC+ cable Battery terminal D DC cable For a single-phase system, the cable length and the conductor cross-section must be identical on each Sunny Island. Conductor cross-section: 50 mm² to 95 mm²cable diameter: 14 mm to 25 mm E Data cable for the Sunny Island: terminal ComSync In F internal communication in the cluster Sunny Island: terminal ComSync Out On slave 2 either connect the data cable of the Sunny Island Charger charge controller or insert the terminator into the terminal. 29

3.2.3 Commissioning Smarten Your Energy Check the wiring (See the Sunny Island inverter installation manual). Close all devices except the BatFuse. This protects all live components from being touched. Close the BatFuse and press and hold the "On" button on the master until you hear an acoustic signal. When the Sunny Remote Control shows <Init System>, press and hold the button on the Sunny Remote Control. An acoustic signal sounds three times and the Sunny Remote Control displays the Quick Configuration Guide. Turn the button on the Sunny Remote Control and select New System. Press the button. This confirms your selection of New System. An entry confirmation prompt appears. 30

Set the number of line conductors in the system: 1Phase: single-phase off-grid system 3Phase: three-phase off-grid system Set SingleClst. Set the type of energy sources. PvOnly: no generator is connected to terminalac2 of the Sunny Island inverter. Gen: one generator is connected to terminal AC2 of thesunny Island inverter. Set the maximum generator current per line conductor for continuous operation. Confirm the basic configuration with Y. Confirm Setup Slaves?withY. 32

Wait until the upper LED (inverter LED) on slave 1 is flashing and the Sunny Remote Control is displaying To identify Slave1, press Tss on the Slv. Press the start-stop button on slave 1. Wait until the Sunny Remote Control displays To identify Slave2, press Tss on the Slv. In off-grid systems without slave 2, press the button on the Sunny Remote Control. In off-grid systems with slave 2, wait until the inverter LED flashes on slave 2. Press the start-stop button on slave 2. The basic configuration is complete. If an SD memory card isinserted into the Sunny Remote Control, The message Do not remove MMC/SD memory card... appearsand the SD memory card is integrated in the file system. Commission the off-grid system 33

3.3 Multicluster System 3.3.1 Circuit Overview Figure 16: Circuitry overview three-phase multicluster 3.3.2 Connecting the Sunny Island Please reference to the up mentioned working instructions to connect the sunny island. 3.3.3 Commissioning Check the wiring Close all devices except the BatFuse. This protects all live components from being touched. Close the BatFuse and press and hold the "On" button on each master until you hear an acoustic signal. 34

When the Sunny Remote Control shows <Init System>, Press and hold the button on the Sunny Remote Control. An acoustic signal sounds three times and the Sunny Remote Control displays the Quick Configuration Guide. Turn the button on the Sunny Remote Control and select New System. Press the button. This confirms your selection of New System. An entry confirmation prompt appears. Set Y and press the button. Set the date. 35

Set the time. Set OffGrid. Set the battery type: LiIon_Ext-BMS: lithium-ion battery Set the battery capacity for ten-hour electric Set the grid voltage and power frequency of the stand-alone grid: 230V_50Hz: grid voltage 230 V, power frequency 50 Hz 220V_60Hz: grid voltage 220 V, power frequency 60 Hz Set 3Phase: 36

Set MultiClst: Smarten Your Energy Set the type of cluster: MainClst: The cluster is a main cluster Set the device type of the Multicluster Box. Tip: The devicetype is indicated on the label of the Multicluster Box. ExtnClst: The cluster is an extension cluster Set the address of the extension cluster, e.g.set extension cluster 1 to 1 Set the maximum generator current per line conductor for continuous operation. Confirm the basic configuration with Y. Wait until the upper LED (inverter LED) on slave 1 is flashing and the Sunny Remote Control is displaying To identify Slave1 press Tss on the Slv. Press the start-stop button on slave 1. 37

Wait until the inverter LED on slave 2 is flashing and the Sunny Remote Control is displaying To identify Slave2, press Tss on the Slv. Press the start-stop button on slave 2 The basic configuration is complete. If an SD memory card is inserted into the Sunny Remote Control, the message Do not remove MMC/SD card... is displayed and the SD memory card is integrated in the file system. Configure all other clusters. For this purpose, perform the steps of the Quick Configuration Guide for each master separately. Commission the off-grid system. 3.3.4 Commission Checklist 1 All the power cords and communication cables between each battery module are connected properly. Yes No 2 The communication cable between the battery bank and SMA are connected correctly. Yes No 3. All batteries are running in Work mode. Yes No 4 Only one battery works as the master, showing *Work on the screen. Yes No 5 PIN 3 of all batteries are turned up. Yes No 6 PIN 2 of the bottom battery is turned up. Yes No 38

4. Appendix 4.1 M4860 datasheet 39

4.2 Power plug datasheet 40