Installation Manual SMA CLUSTER CONTROLLER

Installation Manual SMA CLUSTER CONTROLLER ClusterController-IA-en-15 Version 1.5 ENGLISH

Legal Provisions SMA Solar Technology AG Legal Provisions The information contained in these documents is property of SMA Solar Technology AG. Any publication, whether in whole or in part, requires prior written approval by SMA Solar Technology AG. Internal reproduction used solely for the purpose of product evaluation or other proper use is allowed and does not require prior approval. SMA Warranty You can download the current warranty conditions from the Internet at www.sma-solar.com. Software Licenses The licenses for the software modules used with this product can be found on the supplied CD. 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 of Bluetooth SIG, Inc. and any use of these marks by SMA Solar Technology AG is under license. Modbus is a registered trademark of Schneider Electric and is licensed by the Modbus Organization, Inc. QR Code is a registered trademark of DENSO WAVE INCORPORATED. Phillips and Pozidriv are registered trademarks of Phillips Screw Company. Torx is a registered trademark of Acument Global Technologies, Inc. SMA Solar Technology AG Sonnenallee 1 34266 Niestetal Germany Tel. +49 561 9522-0 Fax +49 561 9522-100 www.sma.de E-mail: info@sma.de 2004 to 2015 SMA Solar Technology AG. All rights reserved. 2 ClusterController-IA-en-15 Installation Manual

SMA Solar Technology AG Table of Contents Table of Contents 1 Information on this Document... 6 1.1 Validity... 6 1.2 Target group... 6 1.3 Additional Information... 6 1.4 Symbols... 6 1.5 Typographies... 7 1.6 Nomenclature... 7 2 Safety... 8 2.1 Intended Use... 8 2.2 Safety Information... 8 2.3 Supported Products... 9 2.4 System Requirements... 10 3 Scope of Delivery... 11 4 Product Description... 12 4.1 Cluster Controller... 12 4.2 Type Label... 17 4.3 LEDs... 18 4.4 Display... 19 4.5 Keypad... 20 5 Mounting... 22 5.1 Requirements for Mounting... 22 5.2 Mounting the Cluster Controller... 23 6 Connection and Commissioning... 25 6.1 Overview of the Connection Area... 25 6.2 Functions of the Terminals and Pin Groups... 26 6.3 Cable Requirements... 28 6.4 Performing Pin Coding... 29 6.5 Preparing Connection Cables for Connection to Multipole Plugs.. 30 6.6 Connecting the Cluster Controller to the Voltage Supply... 32 Installation Manual ClusterController-IA-en-15 3

Table of Contents SMA Solar Technology AG 6.7 Checking and Setting the Cluster Controller System Time... 35 6.8 Connecting the Cluster Controller to a Speedwire Network... 36 6.9 Connecting the Cluster Controller to the LAN... 38 6.10 Connecting USB Data Carriers to the Cluster Controller... 39 6.11 Connecting Sensors to the Cluster Controller... 40 6.11.1 Connecting the Temperature Sensor... 40 6.11.2 Connecting an Irradiation Sensor... 43 6.11.3 Connecting Additional Sensors... 44 6.12 Connections for Grid Management Services... 47 6.12.1 Options for Implementing Grid Management Service Setpoints 47 6.12.2 Digital Setpoint Signal... 48 6.12.2.1 Connection Options... 48 6.12.2.2 Connecting a Signal Source to a Digital Input for Active Power Limitation... 49 6.12.2.3 Connecting a Signal Source to a Digital Input for Reactive Power Setpoint... 51 6.12.2.4 Digital Signal Setpoint when Using Multiple Cluster Controllers... 53 6.12.3 Analog Setpoint Signal... 54 6.12.3.1 Connecting a Signal Source to an Analog Input for Active Power Limitation... 54 6.12.3.2 Connecting a Signal Source to an Analog Input for Reactive Power Setpoint... 55 6.12.3.3 Analog Setpoint Signal when Using Multiple Cluster Controllers... 56 6.12.4 Setpoint via Modbus Client... 57 6.12.5 Feedback of the Cluster Controller... 57 6.12.5.1 Feedback Options... 57 6.12.5.2 Connecting a Remote Terminal for Feedback via Digital Signal... 58 6.12.5.3 Connecting a Remote Terminal for Feedback via Analog Signal... 59 6.12.5.4 Feedback When Using Multiple Cluster Controllers... 63 6.13 Checking the Connections via the Display... 64 6.14 Configuring a Static LAN... 65 6.15 Setting Up a Modbus Data Connection... 65 7 Troubleshooting... 66 4 ClusterController-IA-en-15 Installation Manual

SMA Solar Technology AG Table of Contents 7.1 LED States... 66 7.1.1 Operation LEDs... 66 7.1.2 Network Port LEDs... 69 7.2 Errors in the Cluster Controller or the Connected Devices... 70 7.3 Resetting the Cluster Controller... 74 8 Decommissioning... 76 8.1 Disassembling the Cluster Controller... 76 8.2 Packing the Product for Shipment... 76 8.3 Disposing of the Product... 77 9 Technical Data... 78 10 Accessories... 82 11 Contact... 83 Installation Manual ClusterController-IA-en-15 5

1 Information on this Document SMA Solar Technology AG 1 Information on this Document 1.1 Validity This document is valid for the SMA Cluster Controller (models "CLCON-10" and "CLCON-S-10") from hardware version A1 and from firmware version 1.03.xx.R. 1.2 Target group The tasks described in this document must only be performed by qualified persons. Qualified persons must have the following skills: Training in the installation and configuration of IT systems Knowledge of how an inverter works and is operated Training in how to deal with the dangers and risks associated with installing and using electrical devices and installations Training in the installation and commissioning of electrical devices and installations Knowledge of the applicable standards and directives Knowledge of and compliance with this document and all safety information 1.3 Additional Information Links to additional information can be found at www.sma-solar.com: Document title "SMA SPEEDWIRE FIELDBUS" Document type Technical Information 1.4 Symbols Symbol Explanation Indicates a hazardous situation which, if not avoided, will result in death or serious injury Indicates a hazardous situation which, if not avoided, can result in death or serious injury Indicates a hazardous situation which, if not avoided, can result in minor or moderate injury Indicates a situation which, if not avoided, can result in property damage 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 might occur 6 ClusterController-IA-en-15 Installation Manual

SMA Solar Technology AG 1 Information on this Document 1.5 Typographies Typography Use Example bold Display texts Elements on a user interface Terminals Elements to be selected Elements to be entered > Connects several elements to be selected [Button] [Key] Button or key to be selected or pressed The value can be found in the field Energy. Select Settings. Enter 10 in the field Minutes. Select Settings > Date. Select [Next]. 1.6 Nomenclature Complete designation Large-scale PV power plant PV inverter SMA Cluster Controller SMA Energy Meter Designation in this document PV system Inverter Cluster Controller Energy Meter Installation Manual ClusterController-IA-en-15 7

2 Safety SMA Solar Technology AG 2 Safety 2.1 Intended Use The Cluster Controller is a device for monitoring and controlling SMA inverters with Speedwire/ Webconnect interfaces in decentralized PV systems and large-scale PV power plants. The Cluster Controller is an ITE class A device as per EN 55022 and is designed for industrial use. The product is designed for indoor use only. Use this product only in accordance with the information provided in the enclosed documentation and with the locally applicable standards and directives. Any other application may cause personal injury or property damage. Alterations to the product, e.g. changes or modifications, are only permitted with the express written permission of SMA Solar Technology AG. Unauthorized alterations will void guarantee and warranty claims and in most cases terminate the operating license. SMA Solar Technology AG shall not be held liable for any damage caused by such changes. Any use of the product other than that described in the Intended Use section does not qualify as appropriate. The enclosed documentation is an integral part of this product. Keep the documentation in a convenient place for future reference and observe all instructions contained therein. The type label must remain permanently attached to the product. 2.2 Safety Information This section contains safety information that must be observed at all times when working on or with the product. To prevent personal injury and property damage and to ensure long-term operation of the product, read this section carefully and observe all safety information at all times. Danger to life due to electric shock from touching an ungrounded product Touching an ungrounded product can cause a lethal electric shock. Ensure that the product is integrated in the existing overvoltage protection. Ground the enclosure of the product. Damage to the product due to moisture The product is not splash-proof (IP20). Moisture can penetrate the product and damage it. Only use the product in a dry, indoor environment. 8 ClusterController-IA-en-15 Installation Manual

SMA Solar Technology AG 2 Safety 2.3 Supported Products SMA Products Availability of SMA products in your country Not all SMA products are available in all countries. For information on whether an SMA product is available in your country, visit the website of your country's SMA subsidiary at www.sma-solar.com or contact your distributor. The Cluster Controller can establish a connection to and display data on the following SMA products that are equipped with Speedwire communication: Inverters: All inverters with integrated or retrofitted Speedwire/Webconnect interface Information on whether an inverter has an integrated Speedwire/Webconnect interface or can be retrofitted with a Speedwire/Webconnect interface can be found on the inverter product page at www.sma-solar.com. Other products: Sunny Portal SMA Energy Meter SMA Fuel Save Controller SMA Grid Gate of device type "GRIDGATE-20" from firmware version 1.0 SMA Power Plant Controller Products from Other Manufacturers Sensors: Irradiation sensors that can output a current signal in the range from 0 ma to 20 ma Temperature sensors with a Pt100 measuring shunt or a Pt1000 measuring shunt Other sensors that can output a current signal in the range from 0 ma to 20 ma or a voltage signal in the range from 10 V to +10 V Signal receivers and digital and analog signal sources: Signal sources with relay contacts Signal sources that provide digital output signals Signal sources that can output current signals in the range from 0 ma to 20 ma Signal sources that can output voltage signals in the range from 10 V to +10 V Signal receivers that can process current signals in the range from 0 ma to 20 ma Routers and network switches: Routers and network switches for Fast Ethernet with a data transfer rate of at least 100 Mbit/s All network components used must support the IGMP version 1 protocol (IGMPv1). Installation Manual ClusterController-IA-en-15 9

2 Safety SMA Solar Technology AG Power supply units: In addition to the top-hat rail power supply unit offered as an accessory (see Section 10, page 82 ), the Cluster Controller supports power supply units with the following properties: Maximum output current including short circuit: 8 A Maximum output apparent power: 100 VA DC output voltage: 24 V Nominal current: minimum 1.8 A 2.4 System Requirements Supported web browsers: Microsoft Internet Explorer from version 8 Mozilla Firefox from version 3.6 Recommended display resolution: Minimum 1,024 pixels x 768 pixels 10 ClusterController-IA-en-15 Installation Manual

SMA Solar Technology AG 3 Scope of Delivery 3 Scope of Delivery Check the scope of delivery for completeness and any externally visible damage. Contact your distributor if the scope of delivery is incomplete or damaged. Figure 1: Components included in the scope of delivery Position Quantity Designation A 1 Cluster Controller B 1 Three-pole plug C 1 Two-pole plug* D 2 Five-pole plug E 8 Six-pole plug** F 2 Eight-pole plug G 2 Coding element H 20 Cable tie with caption field I 8 Shield clamp with ring terminal lug K 1 Ring terminal lug L 1 Fastening screw M 2 Washer N 1 Tooth lock washer O 1 Split lock washer P 1 CD with product documentation Q 1 Quick reference guide for commissioning and supplementary sheet for noting down connected devices * Reserved for future applications. Keep the plug in a safe place. ** Two of the eight plugs are reserved for future applications. Keep the two plugs in a safe place. Installation Manual ClusterController-IA-en-15 11

4 Product Description SMA Solar Technology AG 4 Product Description 4.1 Cluster Controller The Cluster Controller is a device for monitoring and controlling SMA inverters with Speedwire/ Webconnect interfaces in decentralized PV systems and large-scale PV power plants. The Cluster Controller primarily performs the following tasks: Set-up of the Speedwire network Reading out, provision and administration of PV system data Configuring device parameters Feedback on current total active power of the system Implementation and feedback of grid operator setpoints for active power limitation and reactive power operation under grid management services Implementation and feedback of setpoints for active power limitation when PV electricity is directly marketed Sending e-mail alarms in the event of critical system statuses Sending the system data to an FTP server and/or the Sunny Portal Internet portal Performing updates for the Cluster Controller and the inverters Figure 2: Design of the Cluster Controller Position A B C D Designation LEDs Connection areas Keypad Display Reading out, provision and administration of PV system data The Cluster Controller is the central communication unit for the system and continuously reads out the data of the devices in the system (e.g. inverters, sensors). The Cluster Controller then makes this system data available via the display, user interface and Modbus data interface. In addition, the PV system data can be displayed, evaluated and managed using Sunny Portal. 12 ClusterController-IA-en-15 Installation Manual

SMA Solar Technology AG 4 Product Description Configuring device parameters You can configure specific parameters of individual devices or entire device classes via the user interface of the Cluster Controller. You must be logged into the user group Installer on the Cluster Controller. The device parameters that can be configured, if any, depend on the device and the rights of the user group. You may only change grid-sensitive device parameters (SMA Grid Guard parameters) with the approval of the grid operator and using your personal SMA Grid Guard code. Sending e-mail alarms in the event of critical system statuses You have the option of receiving prompt information on critical system statuses via e-mail. The Cluster Controller automatically sends a notification if alarm-related events occur in the system. Feedback on current total active power of the system You have the option of being informed of the total active power currently generated by the system via an analog current output signal. Implementation and feedback of grid operator setpoints for active power limitation and reactive power operation under grid management services With the Cluster Controller, as part of grid management services you can implement different grid operator setpoints for active power limitation and reactive power operation of your system. The Cluster Controller can implement the setpoints using open-loop control or closed-loop control. For Cluster Controller systems without self-consumption and with direct limitation of active power feed-in, the operating mode Open-loop control is used. In this operating mode, the Cluster Controller can receive the setpoints either in the form of digital or analog signals, or via Modbus. The different types of signal source can be combined so that, for example, the setpoints for the active power limitation are received as digital signals and the reactive power setpoints are received as analog signals: For Cluster Controller systems with self-consumption, the operating mode Closed-loop control is used. In this operating mode, you can regulate the active power fed in by the system at the grid-connection point and limit it e.g. to a fixed percentage value. In agreement with your grid operator, you can use the user interface of the Cluster Controller to configure which setpoints of the Cluster Controller are to be transmitted to the connected inverters depending on the respective signal. In addition, you can use a digital response contact or an analog current output signal to inform the grid operator of the setpoints (if any) for active power limitation and reactive power operation that are currently being used in the system. Implementation and feedback of setpoints for active power limitation when PV electricity is directly marketed The PV current generated by your system can be directly marketed. The Cluster Controller can receive setpoints for active power limitation from the direct marketer as digital or analog signals or via Modbus. The "CLCON-S-10" model provides a Modbus register for sending setpoints via Modbus. The model "CLCON-10" provides two Modbus registers. The Cluster Controller can provide feedback about the current feed-in power of the system to the direct marketer via digital or analog signals. To avoid conflicts when different setpoints are used by the grid operator and the direct marketer, the Cluster Controller always implements the setpoint that more strongly limits the active power of the system. Installation Manual ClusterController-IA-en-15 13

4 Product Description SMA Solar Technology AG Sending the system data to an FTP server and/or the Sunny Portal Internet portal The Cluster Controller can automatically send the system data that has been read out to an arbitrary FTP server and/or the Sunny Portal Internet portal via the Internet. The Cluster Controller establishes the connection to the FTP server and/or Sunny Portal e.g. via a router. Performing updates for the Cluster Controller and the inverters You have the option of performing updates for the Cluster Controller and the inverters in the system. You can perform the updates automatically or manually. The update source can be the SMA Update Portal or a USB data carrier with update files downloaded from the Internet. Alternatively, you can also upload the update files directly from the computer via the user interface of the Cluster Controller. Figure 3: Decentralized large-scale PV power plant with Cluster Controller and implementation of grid operator setpoints via open-loop control (example) Position A B C D Designation PV Modules Module temperature sensor Inverter Outside temperature sensor 14 ClusterController-IA-en-15 Installation Manual

SMA Solar Technology AG 4 Product Description Position E F G H I K L M N Designation Irradiation sensor Cluster Controller Sunny Portal Router Ripple control receiver or remote terminal unit Grid station Control room Grid control room Utility grid Installation Manual ClusterController-IA-en-15 15

4 Product Description SMA Solar Technology AG Figure 4: Decentralized large-scale PV power plant with Cluster Controller and implementation of grid operator setpoints via closed-loop control (example) Position A B C D E F G H I K Designation PV Modules Module temperature sensor Inverter Outside temperature sensor Irradiation sensor Cluster Controller Industrial load Sunny Portal Router Ripple control receiver or remote terminal unit 16 ClusterController-IA-en-15 Installation Manual

SMA Solar Technology AG 4 Product Description Position L M N O P Designation Energy meter Control room Grid control room Grid station Utility grid 4.2 Type Label The type label clearly identifies the product. The type label can be found on the back of the enclosure. You can read off the following data from the type label: Device type (Type) Serial Number Hardware version (Version) Model Device-specific characteristics You will require the information on the type label to use the product safely and when seeking customer support from Service (see Section 11 "Contact", page 83). Symbols on the Type Label Symbol Designation Explanation CAN ICES-3 (A)/ NMB-3(A) C-Tick IC marking Indoors The product complies with the requirements of the applicable Australian EMC standards. The product complies with the requirements of the applicable Canadian EMC standards. The product is only suitable for indoor installation. FCC designation CE marking The product complies with the requirements of the applicable FCC standards. The product complies with the requirements of the applicable EU directives. Installation Manual ClusterController-IA-en-15 17

4 Product Description SMA Solar Technology AG Symbol Designation Explanation WEEE designation Data matrix code Do not dispose of the product together with household waste but in accordance with the locally applicable disposal regulations for electronic waste. 2D code for device-specific characteristics 4.3 LEDs Operation LEDs LED Designation Explanation Power LED Status LED Data carrier status LED Shows whether the Cluster Controller is starting or is in operation (see Section 7.1 "LED States", page 66) Shows the status of the Cluster Controller and the connected devices as well as the communication status of the system and the status of the grid management services (see Section 7.1 "LED States", page 66) Shows the status of the connected USB data carrier (see Section 7.1 "LED States", page 66) Network Port LEDs Colors and functionality of the network port LEDs are not standardized The colors and functionalities of the network port LEDs are not standardized. The colors used by SMA for the link/activity LED and the speed LED as well as the corresponding functionalities can deviate in products supplied by third-party manufacturers. 18 ClusterController-IA-en-15 Installation Manual

SMA Solar Technology AG 4 Product Description Figure 5: Network port LEDs Position Designation Color Explanation A Link/activity LED Green Shows the status and the activity of the network connection (see Section 7.1.2 "Network Port LEDs", page 69) B Speed LED Yellow Shows the network connection speed (see Section 7.1.2 "Network Port LEDs", page 69) 4.4 Display The display shows information on the Cluster Controller and the connected devices as well as the system status and the system configuration. The display contrast can be configured. The display languages are "German" and "English". You can change the display language via the Cluster Controller user interface. Figure 6: Cluster Controller display (example) Position Designation Explanation A Title line Displays the title of the display view The system time is always displayed. B Data lines Displays text and numeric values The numeric values for measurement or yield data are displayed with units. Overview of the Display Views Display view Start view Explanation Displayed when the Cluster Controller starts up; includes the current firmware version of the Cluster Controller Installation Manual ClusterController-IA-en-15 19

4 Product Description SMA Solar Technology AG Display view System overview Yield data System status Cluster Controller Sunny Portal settings Analog inputs Digital inputs Meteorology Active power limitation Reactive power setpoint Grid management services External communication Speedwire Modbus settings Settings Explanation Displays the system status, the current daily yield, the nominal system power and the current setpoints for active power and reactive power If no button on the keypad is pressed within five minutes, the Cluster Controller switches to the display view System overview. Displays the yield data of the system Displays the current system status The number of inverters detected by the Cluster Controller and the status of the inverters is displayed here. Displays the status and device information of the Cluster Controller When a USB data carrier is inserted into USB port 1, information on the current memory usage of the USB data carrier will be displayed. Displays the configured upload frequency and the date of the last successful data upload to Sunny Portal Displays the analog inputs with the current level value and unit Displays the digital inputs in binary form The digital inputs are summarized in two groups here. Displays the measured values of the connected irradiation sensor and the connected temperature sensors Displays the current setpoint for active power limitation with the setpoint size and the date of the last configuration change Displays the current reactive power setpoint and the date of the last configuration change Displays the setpoint type and the signal sources selected via the Cluster Controller user interface for the grid management services Displays the settings for the LAN Displays the settings for the Speedwire network Displays the Modbus settings with the activated network protocols and the corresponding network ports Enables the display contrast to be changed and the Cluster Controller to be partially or fully reset (see Section 7.3, page 74) 4.5 Keypad Designation Explanation Any button Activates the display illumination Arrow buttons ( ) Changes display views and selects specific display lines 20 ClusterController-IA-en-15 Installation Manual

SMA Solar Technology AG 4 Product Description Designation [OK] [ESC] i Explanation Confirms the selected action Cancels the selected action Opens the display view System status Installation Manual ClusterController-IA-en-15 21

5 Mounting SMA Solar Technology AG 5 Mounting 5.1 Requirements for Mounting Requirements for the mounting location: Product can cause radio interference in living areas The product is a device of ITE class A (EN 55022) and can cause radio interference in living areas. Take suitable measures for shielding radio waves when the Cluster Controller is used in the vicinity of living areas. The mounting location must be indoors. The ambient conditions at the mounting location must be suitable for the operation of the Cluster Controller (see Section 9, page 78). The mounting location must be protected against dust, moisture and corrosive substances. Maximum permitted cable lengths: Observe the maximum cable length of 100 m each between any two nodes in the Speedwire network and in the LAN. When connecting a digital or analog signal source (e.g. remote terminal unit, ripple control receiver), observe the maximum cable length of 30 m from the Cluster Controller to the signal source. When connecting a temperature sensor using the four-conductor connection technology, observe the maximum cable length of 20 m from the Cluster Controller to the temperature sensor. When connecting a temperature sensor using the two-conductor connection technology, observe the maximum cable length of 2.5 m from the Cluster Controller to the temperature sensor. Minimum clearances: The minimum clearances must be maintained to ensure adequate heat dissipation. 22 ClusterController-IA-en-15 Installation Manual

SMA Solar Technology AG 5 Mounting Figure 7: Minimum clearances Permitted and prohibited mounting positions: The Cluster Controller must be mounted so that the ventilation slots face upward and downward. This ensures optimum heat dissipation. Figure 8: Permitted and prohibited mounting positions 5.2 Mounting the Cluster Controller Requirements: A top-hat rail must be available. The top-hat rail must 35 mm wide. Installation Manual ClusterController-IA-en-15 23

5 Mounting SMA Solar Technology AG In order to mount the Cluster Controller, the top-hat rail must be at least 26 cm long. When a top-hat rail power supply unit is used, the top-hat rail must be correspondingly longer. The top-hat rail must be securely mounted on the wall or in the switch cabinet. Procedure: Use the rear-side upper retainers to hook the Cluster Controller into the upper edge of the tophat rail and press down toward the top-hat rail. This will hook the spring-mounted top-hat rail locking mechanism on the Cluster Controller onto the lower edge of the top-hat rail. The top-hat rail locking mechanism snaps into place. 24 ClusterController-IA-en-15 Installation Manual

SMA Solar Technology AG 6 Connection and Commissioning 6 Connection and Commissioning 6.1 Overview of the Connection Area Figure 9: Overview of the connection area Position Quantity Designation Explanation A 1 X1 Terminal for the voltage supply B 1 Terminal for grounding C 1 1 USB port for exporting system data D 1 2 USB port for updates E 1 X2 Digital outputs F 1 X3 Reserved for future applications G 1 X4 Digital inputs H 1 X5 Digital inputs I 1 X8 Analog inputs K 1 X7 Terminals for temperature sensors L 1 X6 Analog outputs M 2 X13, X14 Network ports for connecting the LAN Installation Manual ClusterController-IA-en-15 25

6 Connection and Commissioning SMA Solar Technology AG Position Quantity Designation Explanation N 2 X11, X12 Reserved for future applications O 2 X9, X10 Network ports for connecting the inverters (Speedwire) 6.2 Functions of the Terminals and Pin Groups The digital and analog terminals of the Cluster Controller are divided into pin groups. Each pin group forms one of the digital or analog inputs or outputs. On the enclosure, the upper row of contact pins is marked with A and the lower row is marked with B. The contact pins are counted from left to right. The division of terminals into pin groups and the functions of the pin groups are described in the following table. For the pin groups of terminals X2 and X6 there are several functions to choose from. You can find all selectable functions on the user interface of the Cluster Controller. In the following table you can find the factory-set function. Terminal Pin group Pin Function X1 1 to 3 Voltage supply X2 Digital output 1 Relay A Digital output 2 Relay B Digital output 3 Relay C A1 to A3 A4 to A6 B1 to B3 Fault indicator contact for the status Error Fault indicator contact for the status Warning or Error Response contact for the current active power limitation in grid management services X3 Reserved for future applications X4 Digital input 1 A1 to A3 Signal 1 of 4 for the active power limitation in grid management services Digital input 2 A4 to A6 Signal 2 of 4 for the active power limitation in grid management services Digital input 3 B1 to B3 Signal 3 of 4 for the active power limitation in grid management services Digital input 4 B4 to B6 Signal 4 of 4 for the active power limitation in grid management services 26 ClusterController-IA-en-15 Installation Manual

SMA Solar Technology AG 6 Connection and Commissioning Terminal Pin group Pin Function X5 Digital input 5 A1 to A3 Signal 1 of 4 for the reactive power setpoint in grid management services Digital input 6 A4 to A6 Signal 2 of 4 for the reactive power setpoint in grid management services Digital input 7 B1 to B3 Signal 3 of 4 for the reactive power setpoint in grid management services Digital input 8 B4 to B6 Signal 4 of 4 for the reactive power setpoint in grid management services X6 Analog current output 1 A1 to A3 Analog current output for feedback on current active power limitation in grid management services Analog current output 2 A4 to A6 Analog current output for feedback on current reactive power setpoint in grid management services Analog current output 3 B1 to B3 Analog current output for feedback on the current total active system power (as a percentage) based on the maximum nominal system power X7 Temperature input 1 A1 to A5 Analog input for connecting an external temperature sensor Temperature input 2 B1 to B5 Analog input for connecting a module temperature sensor X8 Analog current input 1 A1 to A4 Analog current input for connecting an irradiation sensor or for measuring the active power feed-in at the grid-connection point Analog current input 2 A5 to A8 Analog current input for active power limitation in grid management services or for measuring the active power feed-in at the grid-connection point Analog current input 3 B1 to B4 Analog current input for reactive power setpoint in grid management services or for measuring the active power feed-in at the grid-connection point Analog voltage input 4 B5 to B8 Analog voltage input for connecting a sensor X9, X10 1 to 8 Network ports for connection to the inverters (Speedwire) Installation Manual ClusterController-IA-en-15 27

6 Connection and Commissioning SMA Solar Technology AG Terminal Pin group Pin Function X11, X12 Reserved for future applications X13, X14 1 to 8 Network ports for connection to LAN 6.3 Cable Requirements UV resistance of connection cables Connection cables to be laid outdoors must be UV-resistant or routed in a UV-resistant cable channel. Terminal Grounding Voltage supply Digital inputs Digital outputs Analog inputs, analog outputs and temperature inputs (conductor) Analog inputs (connection cable) Analog outputs (connection cable) Cable requirements Conductor cross-section: 2.5 mm² Maximum cable length: 30 cm Number of insulated conductors: at least two Conductor cross-section: 0.2 mm² to 1.5 mm² Maximum cable length: 3 m Number of insulated conductors: at least two Conductor cross-section: 0.2 mm² to 1.5 mm² Maximum cable length: 30 m Number of insulated conductors: at least two Conductor cross-section: 0.2 mm² to 1.5 mm² Maximum cable length: 30 m Conductor cross-section: 1.5 mm² Cable length: 32 cm Number of insulated conductors: at least two Shielding: yes Conductor cross-section: 0.2 mm² to 1.5 mm² Maximum cable length: 30 m Number of insulated conductors: at least two Shielding: yes Conductor cross-section: 0.2 mm² to 1.5 mm² Maximum cable length: 3,000 m 28 ClusterController-IA-en-15 Installation Manual

SMA Solar Technology AG 6 Connection and Commissioning Terminal Temperature inputs (connection cable) Inverter (Speedwire) LAN Cable requirements Number of insulated conductors for tolerance ±2 C: at least two Number of insulated conductors for tolerance ±0.5 C: at least four Conductor cross-section: at least 4 x 0.25 mm² External cable diameter: 4.5 mm to 7.0 mm Maximum cable length for four-conductor connection technology: 20 m Maximum cable length for two-conductor connection technology: 2.5 m Number of insulated conductor pairs and insulated conductor cross-section: at least 2 x 2 x 0.22 mm² External diameter: the maximum external diameter depends on the size of the cable gland or the conduit (see the installation manual of the Speedwire/Webconnect interface) Cable type: 100BaseTx, from Cat5 with shielding S-UTP, F-UTP or higher Plug type: RJ45 of Cat5, Cat5e, Cat6, Cat6a Cat7 plugs cannot be used. Cable length between two nodes: max. 50 m with patch cable, max. 100 m with installation cable Number of insulated conductor pairs and insulated conductor cross-section: at least 2 x 2 x 0.22 mm² Cable type: 100BaseTx, from Cat5 with shielding S-UTP, F-UTP or higher Plug type: RJ45 of Cat5, Cat5e, Cat6 or Cat6a. Cat7 plugs cannot be used. Cable length between two nodes: max. 50 m with patch cable, max. 100 m with installation cable 6.4 Performing Pin Coding Pin coding prevents confusion when using multipole connectors, e.g. in the event of removal and later re-insertion of a multipole plug. Using the coded pins, you can be sure of inserting a multipole plug into the correct terminal. Tip: perform pin coding for all multipole connections now, even if you do not wish to use all multipole connections at this point. Then you will not need to perform pin coding later for the multipole connections that you are not currently using. Code the pins correctly When selecting the pins to be coded, be sure to code different pins for each terminal and for each pin row. Installation Manual ClusterController-IA-en-15 29

6 Connection and Commissioning SMA Solar Technology AG Procedure: 1. Insert one of the coding tabs on the coding element, parallel to the conductor axis, into the pin to be coded. 2. Remove the coding tab from the coding element by snapping it off. 3. On the multipole plug, remove the key from the conductor entry that will receive the coded pin when connected to the Cluster Controller. 6.5 Preparing Connection Cables for Connection to Multipole Plugs Always proceed as follows to prepare connection cables for connection to multipole plugs. 1. Strip 40 mm of cable sheath from the end of the connection cable to which the multipole plug is to be attached. 2. Perform the following additional steps for the connection cables for the analog inputs, the analog outputs and the temperature inputs: Trim the cable shield of the connection cable to 15 mm. Fold the surplus cable shield back over the cable sheath. 30 ClusterController-IA-en-15 Installation Manual

SMA Solar Technology AG 6 Connection and Commissioning Press the shield clamp onto the cable shield. The cable shield must be clamped under the shield clamp as completely as possible. Depending on the number of connection cables, split the wire required for shielding into pieces with a length 40 mm. Remove 6 mm of the cable sheath and strip off the insulation by 6 mm at both ends of the insulated conductor. Insert the insulated conductor at one end of the wire into the ring terminal lug of the shield clamp and crimp with a crimping tool. 3. Trim unneeded insulated conductors flush with the cable sheath. 4. Strip off the conductor insulation by 6 mm. The connection cable is prepared for connection to the multipole plug. Installation Manual ClusterController-IA-en-15 31

6 Connection and Commissioning SMA Solar Technology AG 6.6 Connecting the Cluster Controller to the Voltage Supply Danger to life due to electric shock from touching an ungrounded product Touching an ungrounded product can cause a lethal electric shock. Ensure that the product is integrated in the existing overvoltage protection. Ground the enclosure of the product. Damage to the product due to condensation If the product is moved from a cold environment to a warm environment, condensation may form in the product. When there is a large temperature difference, wait for the product to reach room temperature before connecting to the voltage supply. Procedure: To connect the Cluster Controller to the voltage supply, perform the following actions in the specified order. The exact procedure is described in the following sections. Connecting the Grounding Conductor to the Cluster Controller Connecting the Power Supply Unit Connecting the Grounding Conductor to the Cluster Controller Additionally required material (not included in the scope of delivery): 1 grounding conductor (see Section 6.3 "Cable Requirements", page 28) Procedure: 1. Remove 10 mm of the cable sheath from the grounding conductor. 2. Insert the insulated conductors into the ring terminal lug and crimp with a crimping tool. 32 ClusterController-IA-en-15 Installation Manual

SMA Solar Technology AG 6 Connection and Commissioning 3. Connect the grounding conductor to the grounding terminal. Observe the position of the terminal (see Section 6.1, page 25). Observe the order given below and hand-tighten the fastening screw (torque: 0.8 Nm): Fastening screw Split lock washer Washer Ring terminal lug with grounding conductor Washer Tooth lock washer Connecting the Power Supply Unit Additionally required material (not included in the scope of delivery): 1 power supply unit (see Section 10 "Accessories", page 82) 1 AC connection cable 1 cable for connecting the power supply unit to the Cluster Controller (see Section 6.3 "Cable Requirements", page 28) If you are not using the top-hat rail power supply unit available as an accessory for the Cluster Controller, the power supply unit you are using must meet the requirements detailed below. Requirements for the power supply unit: Maximum output current including short circuit: 8 A Maximum output apparent power: 100 VA DC output voltage: 24 V Nominal current: minimum 1.8 A Requirement: The connection cable must be prepared for connection to the multipole plug (see Section 6.5, page 30). Installation Manual ClusterController-IA-en-15 33

6 Connection and Commissioning SMA Solar Technology AG Figure 10: Pin assignment for terminal X1 Pin Signal Explanation 1 Not assigned Reserved for future applications 2 24 V Input voltage 24 V DC 3 GND Ground Procedure: 1. Mount the power supply unit (see manual from manufacturer). 2. Connect the connection cable to the power supply unit (see manual from manufacturer). Trim the unused insulated conductors up to the cable sheath and write down the conductor colors. 3. Connect the connection cable to the three-pole plug. Unlock conductor entries 2 and 3 with a screwdriver and insert the insulated conductors into the conductor entries. Observe the pin assignment. 4. Connect the three-pole plug to terminal X1 on the Cluster Controller. 5. Connect the AC connection cable to the power supply unit (see the manual from manufacturer). 6. Danger to life due to electric shock Lethal voltages are present at the connection point of the utility grid. Disconnect the connection point from voltage sources and ensure that the connection point is voltage-free. 7. Connect the other end of the AC connection cable to the voltage supply. 8. Connect the connection point to the utility grid. The power LED ( ) on the Cluster Controller is glowing red for two seconds, then it is permanently glowing green. The status LED ( ) is glowing corresponding to the current device status (see Section 7.1, page 66). The Cluster Controller is ready for operation after a maximum of one minute. Is the power LED ( ) glowing permanently red, the status LED ( ) glowing yellow or red and the Cluster Controller not starting? Possible fault cause: the voltage supply is too low. Ensure that the voltage supply is sufficient (see Section 9, page 78). 34 ClusterController-IA-en-15 Installation Manual

SMA Solar Technology AG 6 Connection and Commissioning If the problem persists, contact the Service (see Section 11, page 83). 6.7 Checking and Setting the Cluster Controller System Time Before connecting the Cluster Controller to the Speedwire network and before commissioning the inverters, you must check the Cluster Controller display to verify that the correct system time is displayed on the Cluster Controller. If the correct system time is not displayed, you must set the correct system time via the Cluster Controller user interface. This way, you can avoid inconsistencies in the time settings of the inverters. Available display languages The display languages of the Cluster Controller are German and English. The default language is English. You can only change the display language to German via the Cluster Controller user interface by selecting German as the user interface language and then logging in. Additionally required material (not included in the scope of delivery): 1 network cable (see Section 6.3 "Cable Requirements", page 28) Requirements: The Cluster Controller must be connected to the voltage supply and be in operation (see Section 6.6, page 32). A computer must be available for access to the user interface of the Cluster Controller (see Section 2.4, page 10). Procedure: 1. Connect the computer directly to the Cluster Controller using the network cable. Connect the network cable to the network port X13 or X14 on the Cluster Controller. 2. Select the display view External communication and read and write down the IP address of the Cluster Controller from the line IP address. Tip: if you wish to integrate the Cluster Controller in a static LAN, you will also need the IP address for the network configuration (see Section 6.14, page 65). 3. Call up the IP address of the Cluster Controller via the web browser. The login page opens: The login page does not open? Possible error cause: you have not written down the IP address correctly or you have not entered it correctly. Enter the correct IP address and confirm the entry with the enter key. If the problem persists, read the troubleshooting information (see Section 7.2 "Errors in the Cluster Controller or the Connected Devices", page 70). 4. Select the desired language in the upper area of the login page. Installation Manual ClusterController-IA-en-15 35

6 Connection and Commissioning SMA Solar Technology AG 5. Log in either as User or as Installer with the corresponding default system password for the user group. This makes the language change take effect on the user interface and on the display: User group User 0000 Installer 1111 Default system password The user interface opens. The user interface does not open? Cause: You have not entered the default system password for the selected user group correctly. On the login page, enter the correct default system password for the selected user group and confirm the entry with the enter key. 6. Select the Cluster Controller in the system tree and select the menu Settings in the device menu. 7. Select the parameter group Device > Time settings. 8. If required, use the drop-down list Standard/daylight saving time conversion on to set automatic conversion between standard and daylight saving time. 9. In the field Set system time, set the current date and time of the system. 10. In the drop-down list Time zone, select the time zone in which the system is located. 11. Select [Save]. The system time is updated. 12. Select [Logout] in the toolbar. 6.8 Connecting the Cluster Controller to a Speedwire Network Interference in data transmission due to unshielded power cables If unshielded power cables are used, they generate an electromagnetic field during operation which may induce interference in network cables during data transmission. When laying network cables, observe the following minimum clearances to unshielded energy cables: For installation without separating strip: at least 200 mm For installation with aluminum separating strip: at least 100 mm For installation with steel separating strip: at least 50 mm Do not connect the Speedwire network and the LAN The Speedwire network is a separate network managed by the Cluster Controller. If the Speedwire network and the LAN are connected, a disturbance of both networks is likely. In order to ensure proper communication, do not connect the Speedwire network and the LAN (the Speedwire bus and the Ethernet bus of the LAN must not be connected to the same network switch, for example). 36 ClusterController-IA-en-15 Installation Manual

SMA Solar Technology AG 6 Connection and Commissioning Observe the configuration of the router and the network switch For the Speedwire connection, the product uses IP addresses from the Unicast range and also IP addresses from the Multicast range 239/8 (239.0.0.0 to 239.255.255.255). When using a router or network switch, ensure that the router and the network switch forward the Multicast telegrams required for the Speedwire connection to all nodes in the Speedwire network (for further information on how to configure the router or network switch, see the manual from the manufacturer). IGMP protocol version 1 must be supported The product works with multicasts. For correct function of the product, all network components used must support the IGMP protocol, version 1 (IGMPv1). Requirements: The nodes in the Speedwire network (e. g. inverters) must be cabled in accordance with one of the possible network topologies (see the node installation manual and the Technical Information "SMA SPEEDWIRE FIELDBUS"). If your system uses an Energy Meter to measure the active power feed-in at the gridconnection point, then the Energy Meter must be connected either to the router or network switch of the Speedwire network or directly to terminal X9 or X10 of the Cluster Controller, depending on the network topology of the system. Additionally required material (not included in the scope of delivery): Depending on the network topology: network cable (see Section 6.3 "Cable Requirements", page 28) Figure 11: Pin assignment for network ports X9, X10, X13 and X14 Pin Designation Explanation 1 TX+ Data Out + 2 TX Data Out 3 RX+ Data In + 4 Not assigned Not assigned 5 Not assigned Not assigned 6 RX Data In 7 Not assigned Not assigned 8 Not assigned Not assigned Installation Manual ClusterController-IA-en-15 37

6 Connection and Commissioning SMA Solar Technology AG Procedure: 1. Connect the Cluster Controller to the Speedwire network. Take the desired network topology into account: When using a preassembled network cable, connect the network cable to network port X9 or X10. When using a network cable that is to be assembled by the user, connect the RJ45 connector to the network cable (see the manual from manufacturer) and connect the network cable to network port X9 or X10 on the Cluster Controller. 2. Write down the terminal assignment on the supplied supplementary sheet. 3. Deactivate the Webconnect function on the inverters after completion of Cluster Controller commissioning (see the Cluster Controller user manual). 6.9 Connecting the Cluster Controller to the LAN Additionally required material (not included in the scope of delivery): 1 network cable (see Section 6.3 "Cable Requirements", page 28) Figure 12: Pin assignment for network ports X9, X10, X13 and X14 Pin Designation Explanation 1 TX+ Data Out + 2 TX Data Out 3 RX+ Data In + 4 Not assigned Not assigned 5 Not assigned Not assigned 6 RX Data In 7 Not assigned Not assigned 8 Not assigned Not assigned High costs possible due to inappropriate Internet tariff Depending on use, the data volume transferred by the Cluster Controller via the Internet can be more than 1 GB per month. The data volume depends, among other things, on the number of inverters, the frequency of device updates, the frequency of data transfer to Sunny Portal and the use of FTP push. SMA recommends using an Internet flat rate. 38 ClusterController-IA-en-15 Installation Manual