SMA STP 50-40 Operating Manual
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SMA STP 50-40 Operating Manual

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Operating manual
SUNNY TRIPOWER CORE1 (STP 50-40 / STP 50-41)
ENGLISH
STP50-4x-BE-en-23 | Version 2.3

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Summary of Contents for SMA STP 50-40

  • Page 1 Operating manual SUNNY TRIPOWER CORE1 (STP 50-40 / STP 50-41) ENGLISH STP50-4x-BE-en-23 | Version 2.3...
  • Page 2 Wi-Fi repeater, which is connected to the product via Ethernet. Without the Wi-Fi function, a direct connection to the user interface by scanning the QR code on the product with the SMA 360° app is not possible. Use a different type of connection. STP50-4x-BE-en-23...
  • Page 3 Legal Provisions Legal Provisions The information contained in these documents is the property of SMA Solar Technology AG. No part of this document may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, be it electronic, mechanical, photographic, magnetic or otherwise, without the prior written permission of SMA Solar Technology AG.

  • Page 4: Table Of Contents

    Table of contents SMA Solar Technology AG Table of contents Information on this Document..........Validity ........................Target Group......................Content and Structure of this Document ..............Levels of warning messages ..................Symbols in the Document ..................Typographical Elements in the Document..............
  • Page 5 Activating the Receipt of Control Signals (Only for Italy)........82 8.21 Setting SMA ShadeFix....................82 8.22 Generating the I-V Characteristic Curve ..............83 8.23 Setting the Rated Residual Current of the Residual-Current Device ......83 8.24 Activating or Deactivating SMA ArcFix ..............84 Operating manual STP50-4x-BE-en-23...
  • Page 6 Table of contents SMA Solar Technology AG 8.25 Activating and Setting String-Failure Detection ............85 8.26 Saving the Configuration in a File................87 8.27 Adopting a Configuration from a File............... 87 8.28 Firmware Update ....................... 88 8.28.1 Activating Automatic Firmware Update ..........88 8.28.2...

  • Page 7: Information On This Document

    You will find the latest version of this document and further information on the product in PDF format and as eManual at www.SMA-Solar.com. You can also call up the eManual via the user interface of the product. Illustrations in this document are reduced to the essential information and may deviate from the real product.

  • Page 8: Symbols In The Document

    [Key] • Placeholder for variable • Parameter WCtlHz.Hz# components (e.g., parameter names) Designations in the Document Complete designation Designation in this document Sunny Tripower CORE1 Inverter, product Additional Information For more information, please go to www.SMA-Solar.com. STP50-4x-BE-en-23 Operating manual...
  • Page 9 "Parameters and Measured Values" Technical Information Overview of all inverter operating parameters and their configura- tion options as well as an overview of all SMA Modbus registers "SUNSPEC MODBUS" Technical Information Information on the activation of the SunSpec Modbus interface and information on the SunSpec Modbus profiles "SMA MODBUS"...

  • Page 10: Safety

    All components must remain within their permitted operating ranges and their installation requirements at all times. The product must only be used in countries for which it is approved or released by SMA Solar Technology AG and the grid operator.
  • Page 11 SMA Solar Technology AG 2 Safety This section contains safety information that must be observed at all times when working. The product has been designed and tested in accordance with international safety requirements. As with all electrical or electronical devices, there are residual risks despite careful construction. 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.
  • Page 12 2 Safety SMA Solar Technology AG DANGER Danger to life due to electric shock in case of overvoltages and if surge protection is missing Overvoltages (e. g. in the event of a flash of lightning) can be further conducted into the building and to other connected devices in the same network via the network cables or other data cables if there is no surge protection.
  • Page 13 SMA Solar Technology AG 2 Safety WARNING Danger to life due to electric shock from destruction of the measuring device due to overvoltage Overvoltage can damage a measuring device and result in voltage being present in the enclosure of the measuring device. Touching the live enclosure of the measuring device results in death or lethal injuries due to electric shock.
  • Page 14 Sunny Portal or the use of FTP push. High costs for the Internet connection can be the result. • SMA Solar Technology AG recommends using an Internet flat rate. NOTICE Damage to the product due to cleaning agents The use of cleaning agents may cause damage to the product and its components.
  • Page 15 SMA Solar Technology AG 2 Safety A country data set must be set for feed-in operation From firmware version 3.13.##.R, the activation conditions for feed-in operation were changed. To ensure the inverter begins feed-in operation during initial commissioning, a country data set must be set (for instance via the installation assistant on the user interface of the product, or via a communication product).

  • Page 16: Scope Of Delivery

    3 Scope of Delivery SMA Solar Technology AG 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 scope of delivery...

  • Page 17: Product Overview

    The product is equipped with a display upon request. The display shows the current operating data and events or errors. Label with QR Code for scanning via the SMA 360° App and easy con- nection to the inverter's user interface via Wi-Fi (only available if the prod-...

  • Page 18: Symbols On The Product

    4 Product Overview SMA Solar Technology AG Position Designation Type label The type label clearly identifies the product. The type label must remain permanently attached to the product. You will find the following informa- tion on the type lable: • Device type (Model) •...
  • Page 19 SMA Solar Technology AG 4 Product Overview Icon Explanation Observe the documentations Together with the red LED, this symbol indicates an error. Data transmission Together with the blue LED, this symbol indicates the status of the network con- nection. Grounding conductor This symbol indicates the position for connecting a grounding conductor.

  • Page 20: Interfaces And Functions

    4 Product Overview SMA Solar Technology AG Icon Explanation RCM (Regulatory Compliance Mark) The product complies with the requirements of the applicable Australian stan- dards. ICASA The product complies with the requirements of the South African standards for telecommunication. ANATEL...
  • Page 21 To improve security for your product, you can generate a product key. With the product key, the product can be unlocked directly on the user interface and does not require a chargeable order of a PUK via SMA. If you have lost the product key, you can generate a new one by physically accessing the product.
  • Page 22 There is a QR code on the product by default. If the product is equipped with a Wi-Fi interface, you can access the product via Wi-Fi by scanning the QR code on the product using the SMA 360° or SMA Energy app. This automatically connects to the user interface.
  • Page 23 > 3.01.00.R and an SMA I/O Module. The inverter can be connected to the monitoring unit of the grid and PV system protection device via the SMA I/O Module and receive the signal for grid disconnection (for further information see technical information "SUNNY TRIPOWER CORE1 - Simplified Implementation of Grid and PV System...
  • Page 24 With SMA ShadeFix, inverters use the best possible energy supply from the PV modules at all times to increase yields in shaded systems. SMA ShadeFix is enabled by default. The time interval of SMA ShadeFix is usually 6 minutes. This means that the inverter determines the optimum operating point every 6 minutes.

  • Page 25: Led Signals

    SMA Solar Technology AG 4 Product Overview SMA Smart Connected is activated during registration in Sunny Portal. In order to use SMA Smart Connected, it is necessary that the product is permanently connected to Sunny Portal and the data of the operator and qualified person is stored in Sunny Portal and up-to-date.

  • Page 26: Display Messages

    4 Product Overview SMA Solar Technology AG LED signal Explanation The blue LED flashes quickly WPS active for approx. two minutes The WPS function is active. (0.25 s on and 0.25 s off). The blue LED is glowing There is an active connection with a local network (LAN/Wi-Fi) or there is a direct connection (Ethernet/WPS function) with a smart end device (e.g.

  • Page 27: System Overview

    SMA Solar Technology AG 4 Product Overview Display message Explanation Instantaneous output power E-Total Total produced energy Pmax Currently set active power limit cos φ Displacement power factor cos φ Update file(s) found New firmware version available Update progress Update is being performed...

  • Page 28: Circuitry Overview

    4 Product Overview SMA Solar Technology AG 4.6.1 Circuitry Overview UTILITY GRID MEDIUM VOLTAGE TRANSFORMER DISTRIBUTION BOARD POWER SUPPLY UNIT SMA DATA CLCON-PWRSUPPLY MANAGER M ENERGY METER GRID CONNECTION POINT with energy meter 6 ... 16 A of the grid operator Typ B/C/D/K max.

  • Page 29: Communication Overview

    SMA Solar Technology AG 4 Product Overview 4.6.2 Communication Overview SUNNY PORTAL powered by DIRECT ennexOS GRID OPERATOR MARKETER Public Internet Ethernet LAN Ripple control signal Digital signal INTERNET SMA DATA RIPPLE CONTROL MANAGER M RECEIVER ROUTER SUNNY TRIPOWER CORE1...

  • Page 30: Mounting

    5 Mounting SMA Solar Technology AG Mounting Requirements for Mounting Requirements for the mounting location: WARNING Danger to life due to fire or explosion Despite careful construction, electrical devices can cause fires. This can result in death or serious injury.
  • Page 31 SMA Solar Technology AG 5 Mounting Dimensions for mounting: NOTICE Damage to the enclosure by using excessively long screws for attaching profile rails The maximum thread depth of the drill holes for fastening feet and profile rails is 17 mm. If screws are used with a length that exceeds the thread depth, the drill holes fracture and the enclosure will be damaged.
  • Page 32 ☐ When mounting with profile rails, an attachment or fixation by loading is required. When mounting with profile rails, SMA Solar Technology AG recommends to bolt the profile rails e.g. to the profile of the module frame or to attach a sheet metal (which can be weighted with stones or with sandbags) at the profile rails.

  • Page 33: Mounting The Product

    SMA Solar Technology AG 5 Mounting 1 0 0 0 ( 3 9 . 3 ( 3 9 . 3 ( 3 9 . 3 1 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 ( 3 5 .
  • Page 34 5 Mounting SMA Solar Technology AG Additionally required material (not included in the scope of delivery): ☐ For transport with a hoist: 4 eye bolts (M8) Procedure: 1. Attach each foot with two M8x40 hexagon head screws and two washers on the two external taps (M8x14) on the underside of the inverter (torque: 16 Nm).
  • Page 35 SMA Solar Technology AG 5 Mounting 7. Remove all 4 transport handles from the threaded holes. If necessary, insert a screwdriver into the holes on the transport handle and use the screwdriver to remove the transport handle. Operating manual STP50-4x-BE-en-23...

  • Page 36: Electrical Connection

    6 Electrical Connection SMA Solar Technology AG Electrical Connection Overview of the Connection Area Figure 10: Connection areas of the inverters' AC Connection Unit and DC Connection Unit Position Designation Slots for AC surge protection devices Terminal blocks for AC connection...
  • Page 37 Screw-type fuses (e.g. DIAZED fuse or NEOZED fuse) are not load-break switches. • Do not use screw-type fuses as load-break switches. • Use a load-break switch or circuit breaker as a load disconnection unit (for information and design examples, see the Technical Information "Circuit Breaker" at www.SMA-Solar.com). Operating manual STP50-4x-BE-en-23...

  • Page 38: Connecting The Inverter To The Utility Grid

    300 mA or higher (information about the selection of a residual-current device see technical information "Criteria for Selecting a Residual-Current Device" at www.SMA- Solar.com). Each inverter in the system must be connected to the utility grid via a separate residual-current device.
  • Page 39 SMA Solar Technology AG 6 Electrical Connection 3. If the enclosure lid of the AC Connection Unit is mounted, remove all 10 screws of the enclosure lid using a Torx screwdriver (TX25) and remove the enclosure lid towards the front.

  • Page 40: Connecting The Network Cables

    6 Electrical Connection SMA Solar Technology AG WARNING Danger to life due to electric shock The inverter is delivered with a bridge between N and the enclosure as standard. The bridge is absolutely essential if the connection to a utility grid is established without a neutral conductor.
  • Page 41 SMA Solar Technology AG 6 Electrical Connection ☐ Cable type: 100BaseTx ☐ Cable category: minimum CAT5e ☐ Plug type: RJ45 of Cat5, Cat5e or higher ☐ Shielding: SF/UTP, S/UTP, SF/FTP or S/FTP ☐ Number of insulated conductor pairs and insulated conductor cross-section: at least 2 x 2 x 0.22 mm²...

  • Page 42: Connecting The Multifunction Relay

    6 Electrical Connection SMA Solar Technology AG 11. Ensure that the RJ45 plug is securely in place by pulling slightly on the cable. 12. Tighten the swivel nut on the cable gland hand-tight. This will secure the network cable in place.

  • Page 43: Connection Options

    SMA Solar Technology AG 6 Electrical Connection 6.4.3 Connection Options The connection procedures vary, depending on the operating mode. Operating mode Connection option Fault indication (FltInd) Using the Multifunction Relay as a Fault Indicator Contact Self-consumption (SelfC- Controlling loads via the multifunction relay or charging batteries de-...
  • Page 44 6 Electrical Connection SMA Solar Technology AG Using the Multifunction Relay as a Fault Indicator Contact You can use the multifunction relay as a fault indicator contact and have an error or smooth operation of the inverter displayed or signaled via a suitable display device. You can connect multiple inverters to one fault indicator or operation indicator, as needed.
  • Page 45 SMA Solar Technology AG 6 Electrical Connection Controlling loads via the multifunction relay or charging batteries depending on the power production of the PV system The multifunction relay can control loads or charge batteries power-dependently. To enable this function, you must connect a contactor (K1) to the multifunction relay. The contactor (K1) switches the operating current for the load on or off.

  • Page 46: Connection To The Multifunction Relay

    6 Electrical Connection SMA Solar Technology AG Reporting the switching status of the grid relay The multifunction relay can trip a signal to the grid operator as soon as the inverter connects to the utility grid. To enable this function, the multifunction relays of all inverters must be connected in parallel.
  • Page 47 SMA Solar Technology AG 6 Electrical Connection Procedure: DANGER Danger to life due to high voltages • Disconnect the inverter from all voltage sources (see Section 9, page 91). 2. If the enclosure lid of the DC-Connection Unit is closed, remove it as follows: Unscrew all ten screws with a Torx screwdriver (TX25) and remove the enclosure lid carefully forward.

  • Page 48: Dc Connection

    6 Electrical Connection SMA Solar Technology AG DC Connection 6.5.1 Requirements for the DC Connection Requirements for the PV modules per input: ☐ All PV modules should be of the same type. ☐ All PV modules should be aligned and tilted identically.
  • Page 49 SMA Solar Technology AG 6 Electrical Connection NOTICE Destruction of the inverter due to overvoltage If the open-circuit voltage of the PV modules exceeds the maximum input voltage of the inverter, the inverter can be destroyed due to overvoltage. • If the open-circuit voltage of the PV modules exceeds the maximum input voltage of the inverter, do not connect any strings to the inverter and check the design of the PV system.

  • Page 50: Connecting The Pv Array

    6 Electrical Connection SMA Solar Technology AG ☑ The stranded wire can be seen inside the clamping bracket chamber. 4. If the stranded wire is not visible in the chamber, the cable is not correctly inserted and the connector must be reassembled. To do this, the cable must be removed from the connector.
  • Page 51 SMA Solar Technology AG 6 Electrical Connection NOTICE Damage to the product due to ground fault on DC side during operation Due to the transformerless topology of the product, the occurrence of ground faults on DC side during operation can lead to irreparable damage. Damages to the product due to a faulty or damaged DC installation are not covered by warranty.
  • Page 52 6 Electrical Connection SMA Solar Technology AG 3. Secure the DC load-break switch against reconnection using a padlock. 4. Measuring the voltage of the PV array. Ensure that the maximum input voltage of the inverter is adhered to and that there is no ground fault in the PV system.

  • Page 53: Disassembling The Dc Connectors

    SMA Solar Technology AG 6 Electrical Connection 12. Insert the DC connectors with sealing plugs into the corresponding DC inputs on the inverter. ☑ The DC connectors snap into place. 13. Ensure that the DC connectors with sealing plugs are securely in place.
  • Page 54 6 Electrical Connection SMA Solar Technology AG 3. Unlock the DC connector. To do this, insert a flat- blade screwdriver (blade width: 3.5 mm) into the side catch mechanism and pry the catch mechanism open. 4. Carefully pull the DC connector apart.

  • Page 55: Commissioning

    Commissioning a product in SMA Energy Systems If the product is used in an SMA Energy System, the commissioning must be performed according to the manual of the SMA Energy System. The procedure and the sequence may differ from the steps described in this section.

  • Page 56: Commissioning The Inverter

    You can request the SMA Grid Guard code via the Online Service Center. Configure the product and set country data set. Then the Section 8.15, page 78 product will begin operation.
  • Page 57 SMA Solar Technology AG 7 Commissioning 4. Connect the DC connector to the inverter in its original position. ☑ The DC connectors snap into place. 5. Ensure that all DC connectors are securely in place. 6. Turn the DC load-break switch of the inverter to position I.

  • Page 58: Selecting A Configuration Option

    On the Configuring the Inverter page, different configuration options are available to choose from. Select one of the options and proceed for the selected option as described below. SMA Solar Technology AG recommends carrying out the configuration with the installation assistant. This way, you ensure that all relevant parameters are set for optimal inverter operation.
  • Page 59 SMA Solar Technology AG 7 Commissioning • Adoption of configuration from a file • Configuration with the installation assistant (recommended) • Manual configuration Accepting the settings Saving the made settings is indicated by an hourglass symbol on the user interface. If the DC voltage is sufficient, the data is transferred directly to the inverter and accepted.
  • Page 60 7 Commissioning SMA Solar Technology AG Procedure: 1. Select the configuration option Manual Configuration. ☑ The Device Parameters menu on the user interface will open and all available parameter groups of the inverter will be displayed. 2. Select [Edit parameters].

  • Page 61: Operation

    Web browser signals a security vulnerability After the IP address has been entered, a message might appear indicating that the connection to the user interface of the product is not secure. SMA Solar Technology AG guarantees the security of the user interface.
  • Page 62 ☐ JavaScript must be enabled in the web browser of the smart device. ☐ The installer's SMA Grid Guard code must be available to change network-relevant settings after the first 10 hours of feed-in operation, or after completing the installation assistant. You can request the SMA Grid Guard code via the Online Service Center.
  • Page 63 Connection with Wi-Fi network search 1. Search for Wi-Fi networks with your smart device. 2. Select the SSID of the product SMA[serial number] in the list with the detected Wi-Fi networks. 3. Enter the device-specific Wi-Fi password (see WPA2-PSK on the type label of the product or the rear side of the manual included in delivery).

  • Page 64: Establishing A Connection Via Ethernet In The Local Network

    Web browser signals a security vulnerability After the IP address has been entered, a message might appear indicating that the connection to the user interface of the product is not secure. SMA Solar Technology AG guarantees the security of the user interface.

  • Page 65: Establishing A Connection Via Wlan In The Local Network

    ☐ The respective latest version of one of the following web browsers must be installed on the smart device: Chrome, Edge, Firefox or Safari. ☐ The installer's SMA Grid Guard code must be available to change network-relevant settings after the first 10 hours of feed-in operation, or after completing the installation assistant. You can request the SMA Grid Guard code via the Online Service Center.
  • Page 66 4. Click on Save. 5. In the New password field, enter a password for the Installer user group. Assign a uniform password to all SMA devices to be registered in a system. The installer password is also the system password.
  • Page 67 SMA Solar Technology AG 8 Operation Log Out as the User or Installer 1. On the right-hand side of the menu bar, select the menu User Settings. 2. In the subsequent context menu, select [Logout]. ☑ The login page of the user interface opens. The logout was successful.

  • Page 68: Start Page Design Of The User Interface

    8 Operation SMA Solar Technology AG Start Page Design of the User Interface Figure 17: Design of the user interface's home page (example) STP50-4x-BE-en-23 Operating manual...
  • Page 69 Provides the following functions, depending on the user group logged in: • Starting the installation assistant • Set access rights • Activating and Deactivating the Smart Inverter Screen • SMA Grid Guard login • Show eManual • Logout Operating manual STP50-4x-BE-en-23...
  • Page 70 Designation Description Help Provides the following functions: • Displaying information on Open Source licenses used • Link to the website of SMA Solar Technology AG Status bar Displays the following information: • Inverter serial number • Inverter firmware version • IP address of the inverter within the local network...

  • Page 71: Displaying And Downloading The Stored Data

    SMA Solar Technology AG 8 Operation Position Designation Description Current power and cur- Temporal progression of the PV power and the power rent consumption consumption of the household over the selected time pe- riod. Please note, the power consumption will only be dis- played if an energy meter is installed in the PV system.

  • Page 72: Activating The Smart Inverter Screen

    8 Operation SMA Solar Technology AG Activating the Smart Inverter Screen With the Smart Inverter Screen, the most important inverter data is displayed directly on the user interface login page. To activate the Smart Inverter Screen, proceed as listed in the following.

  • Page 73: Activate Wps Function

    8 Operation Requirement: ☐ The SMA Grid Guard code must be available to change network-relevant parameters after the first 10 hours of feed-in operation, or after completing the installation assistant. You can request the SMA Grid Guard code via the Online Service Center.

  • Page 74: Switching Wlan On And Off

    8 Operation SMA Solar Technology AG Switching WLAN On and Off The inverter is equipped with an activated WLAN interface as standard. If you do not want to use WLAN, you can switch the WLAN function off and switch it on again whenever needed. In doing so, you can switch the WLAN direct connection and the WLAN connection in the local network on independently of each other.

  • Page 75: Switching The Dynamic Power Display Off

    The product key is stored only on the device. A lost product key cannot be recovered, it can only be recreated. Creating a product key is not mandatory, but is recommended by SMA Solar Technology AG because the product key significantly increases the security of the system.

  • Page 76: Configuring The Service Access

    In the event of a malfunction of the product, it may be necessary for a service user authorized by SMA Solar Technology AG to access the user interface of the product. Service access must be activated to execute warranty services. If a quick and uncomplicated service intervention is to be enabled in an emergency, the service access must be permanently activated.

  • Page 77: Changing Operating Parameters

    3. Call up the menu Device parameters. 4. Click on [Edit parameters]. 5. Log in using the SMA Grid Guard code to change those parameters designated by a lock (only for installers). In the menu, select User Settings > SMA Grid Guard Login, enter the SMA Grid Guard code and select [Login].

  • Page 78: Configuring The Country Data Set

    8 Operation SMA Solar Technology AG Accepting the settings Saving the made settings is indicated by an hourglass symbol on the user interface. If the DC voltage is sufficient, the data is transferred directly to the inverter and accepted. If the DC voltage is too low (e. g.

  • Page 79: Configuring The Active Power Mode

    SMA Solar Technology AG 8 Operation 8.16 Configuring the Active Power Mode Starting the installation assistant 1. Open the user interface (see Section 8.2, page 61). 2. Log in as Installer. 3. Start the installation assistant (see Section 8.7, page 72). 4. Select [Save and continue] after each step up until the step Grid management service.

  • Page 80: Changing The Operating Mode Of The Multifunction Relay

    8 Operation SMA Solar Technology AG This means that if the "Q on Demand 24/7" function" is active, no other grid-supporting functions (e.g., cos phi) are possible between day and night operation of the inverter. Should an independent reactive power provision be desired between day- and night operation, the reactive power provision must be communicated to the inverter via a superordinate control unit.

  • Page 81: Configuring The Modbus Function

    The Modbus interface is deactivated by default and the communication ports 502 set. ® ® ® In order to access SMA inverters with SMA Modbus or SunSpec Modbus , the Modbus interface must be enabled. After enabling the interface, the communication ports of both IP protocols can be changed.

  • Page 82: Activating The Receipt Of Control Signals (Only For Italy)

    You can set the time interval in which the inverter has to determine the optimum operating point and to optimize the MPP of the PV system. If you do not want to use SMA ShadeFix, you can disable the feature.

  • Page 83: Generating The I-V Characteristic Curve

    In this way the inverter reduces the operational leakage currents and prevents a false triggering of the residual-current device (further information see technical information "Leading Leakage Currents" at www.SMA-Solar.com). The basic procedure for changing operating parameters is explained in another section (see Section 8.14, page 77).

  • Page 84: Activating Or Deactivating Sma Arcfix

    8.24 Activating or Deactivating SMA ArcFix Only the STP 50-41 is equipped with this function. The arc-fault circuit interrupter SMA ArcFix can be activated with operation inhibition, and activated or deactivated without operation inhibition. The procedure for activating or deactivating the AFCI may differ depending on the year in the name of the country data set.

  • Page 85: Activating And Setting String-Failure Detection

    SMA Solar Technology AG 8 Operation Inverters with arc-fault circuit interrupter (AFCI) without operation inhibition should be monitored regularly. Recurring electric arcs should promptly be inspected and rectified by qualified persons. If it is not possible to inspect and rectify the fault immediately, the inverter should be decommissioned until the cause of the fault has been clarified and rectified.
  • Page 86 8 Operation SMA Solar Technology AG Settings via device parameters In the following table, you will find all parameters that are needed to activate and set the string- failure detection. Object name Parameter Display group Settings Operation.StrFlt- Operating mode of DC side >...

  • Page 87: Saving The Configuration In A File

    Requirements: ☐ Changes to grid-relevant parameters must be approved by the responsible grid operator. ☐ The SMA Grid Guard code must be available. You can request the SMA Grid Guard code via the Online Service Center. Procedure: 1. Open the user interface (see Section 8.2, page 61).

  • Page 88: Firmware Update

    You can activate an automatic firmware update in the inverter or in the communication product. If no automatic update is set for the inverter in the communication product (e.g. SMA Data Manager, Cluster Controller, Sunny Portal) or via the user interface of the inverter, you have the option of carrying out a manual firmware update.

  • Page 89: Updating Firmware With Update File Via The Usb Flash Drive

    The update file is, for example, available for download on the product page of the inverter at www.SMA-Solar.com. Ensure that only the update file to which the inverter is to be updated must be stored on the USB flash drive.

  • Page 90: Searching For And Installing New Firmware Via The User Interface

    8 Operation SMA Solar Technology AG 9. Open the user interface and check the events to see whether the firmware update has been completed successfully. 10. If the firmware update has not been successfully completed, perform the firmware update again.

  • Page 91: Disconnecting The Inverter From Voltage Sources

    SMA Solar Technology AG 9 Disconnecting the Inverter from Voltage Sources Disconnecting the Inverter from Voltage Sources Prior to performing any work on the product, always disconnect it from all voltage sources as described in this section. Always adhere to the prescribed sequence.
  • Page 92 9 Disconnecting the Inverter from Voltage Sources SMA Solar Technology AG DANGER Danger to life due to electric shock when touching exposed DC conductors or DC plug contacts if the DC connectors are damaged or loose The DC connectors can break or become damaged, become free of the DC cables, or no longer be connected correctly if the DC connectors are released and disconnected incorrectly.
  • Page 93 SMA Solar Technology AG 9 Disconnecting the Inverter from Voltage Sources 14. Ensure there is no voltage on the AC terminal block between L1 and N, L2 and N, and L3 and N using a suitable measuring device. To do so, insert the test probe (maximum diameter: 2.5 mm) into the measuring points of the respective terminal blocks.

  • Page 94: Clean The Product

    10 Clean the product SMA Solar Technology AG 10 Clean the product NOTICE Damage to the product due to cleaning agents The use of cleaning agents may cause damage to the product and its components. • Clean the product and all its components only with a cloth moistened with clear water.

  • Page 95: Troubleshooting

    Installer is the same as the system password in the communication product. Procedure: 1. Request PUK (application form available at www.SMA-Solar.com). 2. Open the user interface (see Section 8.2, page 61). 3. Enter the PUK instead of the password into the field Password.

  • Page 96: Product Key Lost

    11 Troubleshooting SMA Solar Technology AG 6. Click on [Edit parameters]. 7. In the parameter group User Rights > Access Control change the password of the desired user group. 8. Select [Save all] to save the changes. 11.2 Product Key Lost If you have forgotten the password for the product and additionally lost the product key, use the procedure described below to generate a new password.

  • Page 97: Event Messages

    SMA Solar Technology AG 11 Troubleshooting 11.3 Event Messages Event number Message, cause and corrective measures Grid incident The grid voltage or grid impedance at the connection point of the inverter is too high. The inverter has disconnected from the utility grid.
  • Page 98 11 Troubleshooting SMA Solar Technology AG Event number Message, cause and corrective measures Grid incident The power frequency is not within the permissible range. The inverter has dis- connected from the utility grid. Corrective measures: • If possible, check the power frequency and observe how often fluctuations occur.
  • Page 99 SMA Solar Technology AG 11 Troubleshooting Event number Message, cause and corrective measures Grounding connection missing > Check connection The grounding conductor is not correctly connected. Corrective measures: • Ensure that the grounding conductor is correctly connected. 3401 3402 DC overvoltage > Disconnect PV array 3404 Overvoltage at the DC input.
  • Page 100 11 Troubleshooting SMA Solar Technology AG Event number Message, cause and corrective measures 3801 3802 DC overcurrent > Check PV array 3803 Overcurrent at the DC input. The inverter briefly interrupts feed-in operation. 3805 Corrective measures: 3806 • If this message is displayed frequently, ensure that the PV array has been 3807 correctly rated and wired.
  • Page 101 Parameters could not be set using the memory card. The inverter continues to feed in. Corrective measures: • Ensure that the parameters are set correctly. • Ensure that you have an SMA Grid Guard code. 7106 Update file defective The update file is defective. The update failed. The inverter continues to feed...
  • Page 102 11 Troubleshooting SMA Solar Technology AG Event number Message, cause and corrective measures 7320 The device was successfully updated The firmware update was completed successfully. 7330 Condition test failed The testing of the update conditions was not successful. The firmware update package is not suitable for this inverter.
  • Page 103 SMA Solar Technology AG 11 Troubleshooting Event number Message, cause and corrective measures 7348 Incorrect file format The configuration file is not of the required format or is damaged. Corrective measures: • Ensure that the selected configuration file is of the required format and is not damaged.
  • Page 104 Ethernet. 7622 No communication with the I/O module This event is displayed during a device-internal communication error with the SMA I/O Module. The inverter will disconnect from the utility grid for safety reasons. 7702 Device fault The cause must be determined by the Service.
  • Page 105 9003 Grid parameters locked Changes to the grid parameters are now blocked. In order to be able to make changes to the grid parameters, from now on you must log in using the SMA Grid Guard code. Operating manual STP50-4x-BE-en-23...
  • Page 106 • The DC voltage at the DC input is not sufficient to run the main CPU. Corrective measures: • Enter the SMA Grid Guard code. • Ensure that at least the DC start voltage is available (green LED is flashing, pulsing or glowing).
  • Page 107 SMA Solar Technology AG 11 Troubleshooting Event number Message, cause and corrective measures 9035 Rapid Shutdown successful The voltage at the DC inputs and at the AC output of the inverter was success- fully discharged. 9037 Generator connection not carried out The PV array disconnect switches did not connect the PV generator.
  • Page 108 11 Troubleshooting SMA Solar Technology AG Event number Message, cause and corrective measures 10249 [Interface]: network overloaded The network is overloaded. There is no data exchange between the devices. Corrective measures: • Reduce the number of devices in the network.
  • Page 109 SMA Solar Technology AG 11 Troubleshooting Event number Message, cause and corrective measures 10253 [Interface]: connection speed goes to [100 Mbit / 10 Mbit] The data transfer rate has changed. The cause for the status [10 Mbit] can be a defective plug, a defective cable or the pulling or plugging of the network connector.
  • Page 110 11 Troubleshooting SMA Solar Technology AG Event number Message, cause and corrective measures 10284 No Wi-Fi connection possible The inverter does not currently have a Wi-Fi connection to the selected net- work. Corrective measures: • Ensure that the SSID, the Wi-Fi password and the encryption method have been entered correctly.
  • Page 111 SMA Solar Technology AG 11 Troubleshooting Event number Message, cause and corrective measures 10904 Current disconnection limit for voltage monitoring upper minimum threshold |xxx| V 10905 Current disconnection limit for voltage monitoring middle minimum threshold |xxx| V 10906 Current disconnection limit for frequency monitoring switchable maxi-...

  • Page 112: Checking The Pv System For Ground Faults

    11 Troubleshooting SMA Solar Technology AG 11.4 Checking the PV System for Ground Faults If the red LED is glowing and the event number 3501, 3601 or 3701 is being displayed in the Results menu on the inverter user interface, there may be a ground fault present. The electrical insulation from the PV system to ground is defective or insufficient.
  • Page 113 SMA Solar Technology AG 11 Troubleshooting 3. Measure the voltage between the negative terminal and the ground potential (PE). 4. Measure the voltage between the positive and negative terminals. 5. If the following results are present at the same time, there is a ground fault in the PV system: ☑...
  • Page 114 40 MOhm and for polycrystalline and monocrystalline PV modules approximately 50 MOhm per PV module (for further information on calculating the insulation resistance see the Technical Information "Insulation Resistance (Riso) of Non-Galvanically Isolated PV Systems" at www.SMA-Solar.com). Required devices: ☐ Suitable device for safe disconnection and short-circuiting ☐...

  • Page 115: Resetting The Operation Inhibition After Detection Of An Arc Fault

    SMA Solar Technology AG 11 Troubleshooting 6. Set the test voltage. The test voltage should be as close as possible to the maximum system voltage of the PV modules but must not exceed it (see datasheet of the PV modules).

  • Page 116: Decommissioning The Inverter

    12 Decommissioning the Inverter SMA Solar Technology AG 12 Decommissioning the Inverter To decommission the inverter completely upon completion of its service life, proceed as described in this Section. CAUTION Risk of injury when lifting the inverter, or if it is dropped The inverter weighs 84 kg.
  • Page 117 SMA Solar Technology AG 12 Decommissioning the Inverter 5. Remove the AC cable from the inverter. 6. Remove the M63 cable gland from the enclosure opening in the AC connection unit. To do so, remove the inside counter nut and remove the cable gland from the enclosure opening.
  • Page 118 12 Decommissioning the Inverter SMA Solar Technology AG 13. When the DC surge arresters are inserted, pull the surge arresters out of the slots. To do so, squeeze the grooved areas on the left and right sides of the surge arrester.
  • Page 119 SMA Solar Technology AG 12 Decommissioning the Inverter 19. To pack the inverter: remove all 4 transport handles from the threaded holes. If necessary, insert a screwdriver into the holes on the transport handle and use the screwdriver to remove the transport handle.

  • Page 120: Technical Data

    13 Technical Data SMA Solar Technology AG 13 Technical Data DC Input Maximum power of PV array 75000 Wp STC Maximum input voltage 1000 V MPP voltage range 500 V to 800 V Rated input voltage 670 V Minimum input voltage 150 V Initial input voltage 188 V...
  • Page 121 SMA Solar Technology AG 13 Technical Data Rated grid frequency 50 Hz Grid frequency 50 Hz / 60 Hz Operating range at grid frequency 50 Hz 44 Hz to 55 Hz Operating range at grid frequency 60 Hz 54 Hz to 65 Hz Power factor at rated power Displacement power factor, adjustable 0.0 overexcited to 0.0 underexcited...
  • Page 122 13 Technical Data SMA Solar Technology AG General data Width x height x depth, without feet or DC load- 569 mm x 733 mm x 621 mm break switch Weight 84 kg Length x width x height of the packaging 800 mm x 600 mm x 886 mm Transport weight 100 kg Climatic category in accordance with IEC...
  • Page 123 SMA Solar Technology AG 13 Technical Data Climatic Conditions Installation in accordance with IEC 60721-3-4, Class 4K4H Extended temperature range -25 °C to +60 °C Extended humidity range 0% to 100% Threshold for relative humidity, non-condensing 100 % Extended air pressure range  79.5 kPa to 106 kPa Transport in accordance with IEC 60721-3-4, Class 2K3 Temperature range -40°C to +70°C...

  • Page 124: Accessories

    14 Accessories SMA Solar Technology AG 14 Accessories You will find the accessories for your product in the following overview. If required, these can be ordered from SMA Solar Technology AG or your distributor. Designation Short designation SMA order number...

  • Page 125: Contact

    SMA Solar Technology AG 15 Contact 15 Contact If you have technical problems with our products, please contact the SMA Service Line. The following data is required in order to provide you with the necessary assistance: • Device type • Serial number •...

  • Page 126: Eu Declaration Of Conformity

    (L 174/88, June 8, 2011) and 2015/863/EU (L 137/10, March 31, 2015) (RoHS) SMA Solar Technology AG confirms herewith that the products described in this document are in compliance with the fundamental requirements and other relevant provisions of the above- mentioned directives. The entire EU Declaration of Conformity can be found at www.SMA- Solar.com.

  • Page 127: Declaration Of Conformity

    • The Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2012 (SI 2012/3032) SMA Solar Technology AG confirms herewith that the products described in this document are in compliance with the fundamental requirements and other relevant provisions of the above- mentioned regulations.
  • Page 128 www.SMA-Solar.com...

This manual is also suitable for:

Stp 50-41

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