SUNNY MINI CENTRAL 4600A/5000A/6000A Installation Manual SMC 5000A SMA PV Inverter 4600A 6000A
User Manual: Sunny Mini Central SMC 5000A
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PV Inverter SUNNY MINI CENTRAL 4600A / 5000A / 6000A Installation Manual SMC46-60A-IA-IEN120471 | IME-SMC50A_60A | Version 7.1 EN SMA Solar Technology AG Table of Contents Table of Contents 1 1.1 1.2 1.3 1.4 Information on this Manual. . . . . . . . . . . . . . . . . . . . . . . . . Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Target Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Additional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Symbols Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2.1 2.2 2.3 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Intended Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Explanation of Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.3.1 Symbols on the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.3.2 Symbols on the Type Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3 3.1 3.2 Unpacking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Scope of Delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Identifying the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 4 4.1 4.2 4.3 Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Selecting the Mounting Location. . . . . . . . . . . . . . . . . . . . . . . . 15 Mounting the Inverter with the Wall Mounting Bracket . . . . . . 17 5 5.1 Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Overview of the Connection Area . . . . . . . . . . . . . . . . . . . . . . 20 5.1.1 Exterior View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 5.1.2 Interior View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 5.2 Connection to the Power Distribution Grid (AC). . . . . . . . . . . . 23 5.2.1 5.2.2 Conditions for the AC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Connecting the Inverter to the Power Distribution Grid (AC) . . . . . . . . . . . . 25 5.2.3 Additional Grounding of the Enclosure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Installation Manual SMC46-60A-IA-IEN120471 7 7 7 7 8 3 Table of Contents SMA Solar Technology AG 5.3 5.4 Setting the Display Language . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Connecting the PV Array (DC) . . . . . . . . . . . . . . . . . . . . . . . . . 29 5.4.1 Conditions for the DC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 5.4.2 Assembling the DC Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 5.4.3 Opening the DC Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 5.4.4 Connecting the PV Array (DC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 5.5 Connection of the SMA Power Balancer . . . . . . . . . . . . . . . . . 37 5.5.1 5.5.2 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 5.5.3 Testing the Functioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 5.6 5.7 Communication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Setting the Grid and Country Parameters . . . . . . . . . . . . . . . . . 46 5.7.1 Setting the Installation Country . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 5.7.2 Setting Stand‑alone Grid Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 5.7.3 Additional Country Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 6 6.1 6.2 6.3 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Commissioning the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Display Messages During the Startup Phase . . . . . . . . . . . . . . 49 Self‑test in Accordance with DK 5940, Ed. 2.2 (Applies to Italy Only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 6.3.1 Starting the Self‑Test by Tapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 6.3.2 Completion of the Self‑test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 7 7.1 7.2 7.3 Opening and Closing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Opening the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Closing the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 8 8.1 8.2 Maintenance and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . 60 Cleaning the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Checking Heat Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 4 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Table of Contents 8.2.1 Cleaning the Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 8.2.2 Checking the Fans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 8.2.3 Cleaning the Fan Guards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 8.3 Checking the Electronic Solar Switch (ESS) for Wear . . . . . . . 64 9 9.1 9.2 9.3 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Blink Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Error Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 Red LED is Permanently Lit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 9.3.1 Checking the PV Array for Ground Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 9.3.2 Checking the Function of the Varistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 10 10.1 10.2 10.3 10.4 Decommissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Disassembling the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Packing the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 Storing the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 Disposing of the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 11 11.1 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 DC/AC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 11.1.1 Sunny Mini Central 4600A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 11.1.2 Sunny Mini Central 5000A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 11.1.3 Sunny Mini Central 6000A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 11.2 11.3 11.4 11.5 11.6 11.7 11.8 11.9 General Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 Protective Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 National Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 Climatic Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 Electronic Solar Switch (ESS) . . . . . . . . . . . . . . . . . . . . . . . . . . 84 Torque. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 Distribution Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 Installation Manual SMC46-60A-IA-IEN120471 5 Table of Contents SMA Solar Technology AG 12 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 13 Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 6 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Information on this Manual 1 Information on this Manual 1.1 Validity This installation manual describes the assembly, installation, commissioning, maintenance and troubleshooting of the following SMA inverters: • Sunny Mini Central 4600A (SMC 4600A, SMC 4600A-11) • Sunny Mini Central 5000A (SMC 5000A, SMC 5000A-11, SMC 5000A-IT) • Sunny Mini Central 6000A (SMC 6000A, SMC 6000A-11, SMC 6000A-IT) Keep this manual in a convenient place for future reference. 1.2 Target Group This manual is for electrically qualified persons. The tasks described in this manual may be performed by electrically qualified persons only. 1.3 Additional Information You will find further information on special topics such as designing a miniature circuit‑breaker or the description of the operating parameters in the download area at www.SMA.de/en. Refer to the user manual provided for detailed information on operating the inverter. Installation Manual SMC46-60A-IA-IEN120471 7 Information on this Manual SMA Solar Technology AG 1.4 Symbols Used The following types of safety precautions and general information are used in this manual: DANGER! DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury. WARNING! WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury. CAUTION! CAUTION indicates a hazardous situation which, if not avoided, could result in minor or moderate injury. NOTICE! NOTICE indicates a situation that can result in property damage if not avoided. Information Information provides tips that are valuable for the optimal installation and operation of your product. ☑ 8 This symbol indicates the result of an action. SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Safety 2 Safety 2.1 Intended Use The Sunny Mini Central is a PV inverter which converts the direct current of the PV array to alternating current and feeds it into the power distribution grid. Operating Principle of a PV Plant with Sunny Mini Central The Sunny Mini Central may only be operated with PV arrays (PV modules and cabling) of protection class II. Do not connect any energy sources other than PV modules to the Sunny Mini Central. When designing the PV plant, ensure that the values comply with the permitted operating range of all components at all times. The free design program "Sunny Design" (www.SMA.de/en/SunnyDesign) will assist you. The manufacturer of the PV modules must have approved the modules for use with this Sunny Mini Central. You must also ensure that all measures recommended by the module manufacturer for long-term maintenance of the module properties are taken (see also Technical Information "Module Technology" in the download area of www.SMA.de/en). For safety reasons, it is forbidden to modify the product or install component parts that are not explicitly recommended or distributed by SMA Solar Technology AG. Installation Manual SMC46-60A-IA-IEN120471 9 Safety SMA Solar Technology AG 2.2 Safety Precautions DANGER! Danger to life due to high voltages in the inverter. • All work on the inverter may only be carried out by an electrically qualified person. CAUTION! Risk of burns due to hot enclosure parts. • Do not touch the enclosure during operation. • Only touch the enclosure lid during operation. NOTICE! Dust and water intrusion can damage the inverter. Once the Electronic Solar Switch has been pulled out, the inverter only provides degree of protection IP21. The inverter is then no longer protected against water and dust intrusion. In order to also maintain degree of protection IP65 during temporary decommissioning, proceed as follows: • Unlock and disconnect all DC connectors. • Open all DC connectors and remove the cables. • Close all DC inputs with the corresponding DC connectors and the supplied sealing plugs. • Firmly connect the Electronic Solar Switch again. PV array grounding Comply with the local regulations for grounding the PV modules and the PV array. In order to maintain the best possible protection for both the PV plant and human life, SMA Solar Technology AG recommends connecting together the PV array frame and other electrically conductive surfaces and grounding them. 10 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Safety 2.3 Explanation of Symbols This section gives an explanation of all the symbols found on the inverter and on the type label. 2.3.1 Symbols on the Inverter Symbol Explanation Operation display. Indicates the operating state of the inverter. Ground fault or varistor defective. Read section 9.3 "Red LED is Permanently Lit" (page 70). Error or fault. Read section 9 "Troubleshooting" (page 65). You can operate the display by tapping the enclosure lid: • Tapping once: the backlight switches on or the display scrolls to the next display message. • Tapping twice in quick succession*: The inverter shows the display messages from the startup phase again (see section 6.2 "Display Messages During the Startup Phase" (page 49)). DC load disconnection unit Electronic Solar Switch (ESS) • When the Electronic Solar Switch is plugged in, the DC electric circuit is closed. • To interrupt the DC electric circuit and safely disconnect the inverter when under load, you must first remove the Electronic Solar Switch and then all DC connectors . QR‑Code®** for SMA bonus program You will find information on the SMA bonus program at www.SMA‑Bonus.com. * This function is valid from firmware version 2.15 ** QR-Code is a registered trademark of DENSO WAVE INCORPORATED. Installation Manual SMC46-60A-IA-IEN120471 11 Safety SMA Solar Technology AG 2.3.2 Symbols on the Type Label Symbol Explanation Beware of hazardous voltage. The inverter operates at high voltages. All work on the inverter may only be carried out by an electrically qualified person. Beware of hot surface. The inverter can become hot during operation. Avoid contact during operation. Observe all documentation that accompanies the inverter. The inverter must not be disposed of together with the household waste. For more information on disposal, see section 10.4 "Disposing of the Inverter" (page 76). CE mark. The inverter complies with the requirements of the applicable EC guidelines. The inverter has a transformer. Direct current (DC) Alternating current (AC) Degree of protection IP65. The inverter is protected against dust intrusion and water jets from any angle. RAL quality mark for solar products. The inverter complies with the requirements of the German Institute for Quality Assurance and Labeling. 12 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Unpacking 3 Unpacking 3.1 Scope of Delivery Check the delivery for completeness and any visible external damage. Contact your specialty retailer if anything is damaged or missing. Object A B C D E F G H I K Quantity 1 1 1 1 8 8 1 1 1 2 L 2 M N 2 2 O P Q 1 1 1 Installation Manual Description Sunny Mini Central Fan guards (right/left) Wall mounting bracket DC load disconnection unit Electronic Solar Switch (ESS) DC connectors (4 x positive, 4 x negative) Sealing plugs for the DC connectors Cable gland for AC connection Counter nut for cable gland at AC connection Clamping bracket for additional grounding Conical spring washers: 1 x for enclosure lid screws (replacement), 1 x for ground terminal Cheese‑head screws (M6x16): 1 x for enclosure lid (replacement), 1 x for ground terminal Jumpers (1 x for fan test, 1 x for the SMA Power Balancer wiring) Cheese‑head screws (M6x8) for securing the inverter to the wall mounting bracket Silicone tube for insulating the SMA Power Balancer connection cable Installation Manual User Manual SMC46-60A-IA-IEN120471 13 Unpacking Object R S SMA Solar Technology AG Quantity Description 1 Set of documents with explanations and certificates 1 Supplementary sheet with inverter default settings 3.2 Identifying the Inverter You can identify the inverter using the type label. The type label is on the right‑hand side of the enclosure. The serial number (Serial No.) and the type (Type/Model) of the inverter, as well as device‑specific characteristics are specified on the type label. 14 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Mounting 4 Mounting 4.1 Safety DANGER! Danger to life due to fire or explosion. Despite careful construction, electrical devices can cause fires. • Do not mount the inverter on flammable construction materials. • Do not mount the inverter in areas where highly flammable materials are stored. • Do not mount the inverter in a potentially explosive atmosphere. CAUTION! Risk of burns due to hot enclosure parts. • Mount the inverter in such a way that it cannot be touched inadvertently. CAUTION! Risk of injury due to the heavy weight of the inverter. • Take the inverter's weight of approx. 63 kg into account for mounting. 4.2 Selecting the Mounting Location Consider the following requirements when selecting the mounting location: • The mounting method and location must be suitable for the inverter's weight and dimensions (see section 11 "Technical Data" (page 77)). • Mount on a solid surface. • The mounting location must at all times be clear and safely accessible without the use of additional aids such as scaffolding or lifting platforms. Non‑fulfillment of these criteria may restrict servicing. Installation Manual SMC46-60A-IA-IEN120471 15 Mounting SMA Solar Technology AG • Mount vertically or tilted backwards by max. 45°. • The connection area must point downward. • Never mount the device with a forward tilt. • Never install the device with a sideways tilt. • Do not mount horizontally. • Mount at eye level to allow operating states to be read at all times. • The ambient temperature should be below 40°C to ensure optimum operation. • Do not expose the inverter to direct solar irradiation as this can cause excessive heating and thus power reduction. • Observe the minimum clearances to walls, other inverters, or objects as shown in the diagram in order to ensure sufficient heat dissipation and sufficient space for removing the Electronic Solar Switch. 300 mm • In living areas, do not mount the unit on plasterboard walls or similar to avoid audible vibrations. When in use, the inverter emits noises which may be perceived as a nuisance in a living area. 300 mm mm 500 mm 50 300 mm Multiple inverters installed in areas with high ambient temperatures There must be sufficient clearance between the individual inverters to ensure that the cooling air of the adjacent inverter is not taken in. If necessary, increase the clearance spaces and make sure there is enough fresh‑air supply to ensure sufficient cooling of the inverters. 16 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Mounting 4.3 Mounting the Inverter with the Wall Mounting Bracket 1. Mark the position of the drill holes using the wall mounting bracket and drill the holes. Use at least 2 of the 6 holes, with 1 hole on the right and 1 on the left. Installation Manual SMC46-60A-IA-IEN120471 17 Mounting SMA Solar Technology AG CAUTION! Risk of injury due to the heavy weight of the inverter. The inverter weighs approx. 63 kg. • Attach the wall mounting bracket with the corresponding mounting material (depending on the surface). • Use the side handles (above and below) or a steel rod (maximum diameter of 30 mm) for transport and mounting. The rod must be pushed through the enclosure openings. 2. Secure the wall mounting bracket to the wall using appropriate screws and washers. 3. Hang the inverter onto the wall mounting bracket using the opening for this purpose in the rear of the enclosure. 18 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Mounting 4. Screw the inverter onto the wall mounting bracket on both sides using the screws (M6x8) provided. Only tighten the screws hand‑tight. 5. Check to ensure that the inverter is securely in place. 6. Close the recessed grips with the fan guards provided. To help you identify the sides, the fan guards are marked "rechts/right" and "links/left" on the inside. The fan guards prevent dirt and insects from entering the device and, if necessary, can be reordered from SMA Solar Technology AG (see section 13 "Contact" (page 86)). Optional anti‑theft protection To protect the inverter against theft, the back panel can be secured to the wall at the bottom using 2 safety screws. The other 2 holes are spares. Installation Manual SMC46-60A-IA-IEN120471 19 Electrical Connection SMA Solar Technology AG 5 Electrical Connection NOTICE! Electrostatic discharges can damage the inverter. Internal component parts of the inverter can be irreparably damaged by static electric discharge. • Ground yourself before touching a component part. 5.1 Overview of the Connection Area 5.1.1 Exterior View The following figure shows the assignment of the individual connection areas on the bottom of the inverter. Object A B C D E Description DC connectors for connecting the PV strings Jack for connecting the Electronic Solar Switch (ESS) DC load disconnection unit Cable glands for optional communication via RS485 (PG16) Cable gland for connection to the power distribution grid (AC) (12 mm ... 25 mm) Cable glands for SMA Power Balancer 20 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Electrical Connection 5.1.2 Interior View The following figure shows the various components and connection areas of the open inverter. Installation Manual SMC46-60A-IA-IEN120471 21 Electrical Connection SMA Solar Technology AG Object A B C D E F G H I K L M N O P Q Description Connection area and slots for communication Display Jumper slot for the fan test LEDs for displaying the operating states Jumper slot for SMA Power Balancer Terminals for SMA Power Balancer Flat male tab for grounding the cable shield when connecting the SMA Power Balancer Additional terminal for grounding Terminals for AC cables Cable glands for the SMA Power Balancer Cable gland for AC-cable Cable glands for communication Screwing device for shield connection terminal for communication cable DC connector Connection jack for Electronic Solar Switch (ESS) Varistors 22 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Electrical Connection 5.2 Connection to the Power Distribution Grid (AC) 5.2.1 Conditions for the AC Connection Connection requirements of the grid operator Always observe the connection requirements of your grid operator. Cable Design Use "Sunny Design" version 2.0 or higher for the dimensioning of the conductor cross‑sectional areas (see "Sunny Design" program at www.SMA.de/en). Halving the cable losses If 3 inverters with symmetrical feed‑in are combined to form a three‑phase system, the neutral conductor is not subjected to any load, and the cable losses are halved. Thus, the maximum possible cable length is doubled. Cable Requirements Position A B C Installation Manual Designation External diameter Conductor cross‑section Length of insulation to be stripped off Value 12 mm … 25 mm 6 mm² … 16 mm² approx. 16 mm SMC46-60A-IA-IEN120471 23 Electrical Connection SMA Solar Technology AG Load Disconnection Unit You must install a separate miniature circuit‑breaker for each inverter in order to ensure that the inverter can be securely disconnected under load. The maximum permissible fuse protection can be found in section 11 "Technical Data" (page 77). Detailed information and examples for the rating of a miniature circuit‑breaker can be found in the Technical Information "Miniature Circuit Breaker" in the SMA Solar Technology AG download area at www.SMA.de/en. DANGER! Danger to life due to fire. When more than 1 inverter is connected in parallel to the same miniature circuit‑breaker, the protective function of the miniature circuit‑breaker is no longer guaranteed. It can result in a cable fire or destruction of the inverter. • Never connect several inverters to the same miniature circuit‑breaker. • Observe the maximum permissible fuse protection of the inverter when selecting the miniature circuit‑breaker. DANGER! Danger to life due to fire. When a generator (inverter) and a load are connected to the same miniature circuit‑breaker, the protective function of the miniature circuit‑breaker is no longer guaranteed. The current from the inverter and the power distribution grid can accumulate to overcurrent which is not detected by the miniature circuit‑breaker. • Never connect loads between the inverter and the miniature circuit‑breaker without fuse protection. • Always protect loads separately. NOTICE! Damage to the inverter by using screw type fuses as a load disconnection unit. A screw type fuse, e.g. DIAZED fuse or NEOZED fuse, is not a switch-disconnector and thus may not be used as a load disconnection unit. A screw type fuse only acts as cable protection. When disconnecting under load using a screw type fuse, the inverter can be damaged. • Use only a switch‑disconnector or a miniature circuit‑breaker as a load disconnection unit. 24 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Electrical Connection 5.2.2 Connecting the Inverter to the Power Distribution Grid (AC) 1. Check the line voltage and compare with "VAC nom" on the type label. The exact operating range of the inverter is specified in the operating parameters. The corresponding document is available in the download area at www.SMA.de/en. 2. Disconnect the miniature circuit‑breaker and secure against reconnection. 3. Loosen all screws of the enclosure lid and remove the lid. 4. Remove the adhesive tape from the AC enclosure opening (see "D" on Page 20). 5. Insert the AC cable gland from the outside into the enclosure opening and tighten it from the inside with the counter nut. 6. Unscrew the cable gland's lock nut and pass it over the cable. 7. Route the cable through the cable gland to the AC terminal. 8. Connect L, N and the protective conductor (PE) to the terminal blocks using a screwdriver in accordance with the label. To do this, the PE insulated conductor must be 5 mm longer than the L and N insulated conductors. L and N must not be swapped. Installation Manual SMC46-60A-IA-IEN120471 25 Electrical Connection SMA Solar Technology AG 9. Tighten the lock nut firmly to the cable gland. 10. Secure the enclosure lid with all screws and the corresponding conical spring washers. Tighten the screws with 6 Nm torque in the order shown in the figure on the right. The toothing of the conical spring washers must point toward the enclosure lid. The scope of delivery of the inverter includes another spare screw and conical spring washer. DANGER! Danger to life due to enclosure lid carrying voltage. The grounding of the enclosure lid is ensured by the conical spring washers. • Attach the conical spring washers for all 6 screws with the toothing facing toward the enclosure lid. DANGER! Danger to life due to high voltages in the inverter. • Do not switch on the miniature circuit‑breaker until the PV array has also been connected and the inverter is securely closed. ☑ The inverter is now connected to the power distribution grid (AC). 26 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Electrical Connection 5.2.3 Additional Grounding of the Enclosure If the installation requires, you can use the ground terminal to connect a second protective conductor or as equipotential bonding. Procedure 1. Insert the stripped grounding cable (D) under the clamping bracket (C) (max. cross‑section 16 mm² or with bootlace ferrule max. 10 mm²). 2. Screw the clamping bracket tight with screw (A) and conical spring washer (B). The toothing of the conical spring washer must face toward the clamping bracket. ☑ The inverter's enclosure is additionally grounded. Installation Manual SMC46-60A-IA-IEN120471 27 Electrical Connection SMA Solar Technology AG 5.3 Setting the Display Language You can set the language of the display using the switches at the bottom of the display assembly inside the inverter. When selecting the display language, different switching settings apply to inverters that are set to the Italian national standard DK 5940. You can see the standard to which the inverter was set upon delivery on the type label and the supplementary sheet provided with the default settings. For more information, see the Technical Description "Operating Parameters" at www.SMA.de/en. Procedure 1. Open the inverter as described in section 7.2 "Opening the Inverter" (page 55). 2. Set the switches to the required language, as shown below. The following switch settings, except for DK 5940, apply to all national standards: Language German English French Spanish Switch S2 B B A A Switch S1 B A B A The following switch settings apply to inverters that are set to the Italian national standard DK 5940: Language Italian English German French Switch S2 B A B A Switch S1 A A B B 3. Close the inverter as described in section 7.3 "Closing the Inverter" (page 58). ☑ The display language is set. 28 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Electrical Connection 5.4 Connecting the PV Array (DC) 5.4.1 Conditions for the DC Connection Using Y adapters for parallel connection of strings Y adapters may not be visible within close proximity of the inverter or freely accessible. • The DC electric circuit may not be interrupted by Y adapters. • Observe the procedure for disconnecting the inverter as described in section 7.2 "Opening the Inverter" (page 55). • Requirements for the PV modules of the connected strings: – Same type – Same quantity – Identical alignment – Identical tilt • The connection cables of the PV modules must be equipped with connectors. The DC connectors for the DC connection are included in the delivery. • The following limiting values at the DC input of the inverter must not be exceeded: Maximum input voltage 600 V (DC) Maximum input current 26.0 A (DC) WARNING! Risk of lethal electric shock or fire. The maximum possible input current per string is limited by the connectors used. If the connectors are overloaded, an electric arc may occur and there is a risk of fire. • Ensure that the input current for each string does not exceed the maximum through‑fault current of the connectors used. Installation Manual SMC46-60A-IA-IEN120471 29 Electrical Connection SMA Solar Technology AG 5.4.2 Assembling the DC Connectors All PV module connection cables must be equipped with the included DC connectors before connecting them to the inverter. To assemble the DC connectors, proceed as follows. Ensure the connectors have the correct polarity. The DC connectors have the symbols "+" and "‒". Cable requirements: ... ... • Use a PV1‑F cable. Procedure 1. Lead the stripped cable all the way into the plug. 2. Press the clamping bracket down until it audibly snaps into place. 3. Ensure that the cable is correctly positioned: Result Measure ☑ If the stranded wire is visible in the chamber • Proceed to step 4. of the clamping bracket, the cable is correctly positioned. 30 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Result ☑ If the stranded wire is not visible in the chamber, the cable is not correctly positioned. Electrical Connection Measure • Loosen the clamping bracket. To do so, insert a 3.5 mm screwdriver into the clamping bracket and lever it out. • Remove the cable and go back to step 1. 4. Push the threaded joint up to the thread and screw into place with a torque of 2 Nm. ☑ The DC connectors are assembled and can now be connected to the inverter as described in section 5.4.4 "Connecting the PV Array (DC)" (page 33). Installation Manual SMC46-60A-IA-IEN120471 31 Electrical Connection SMA Solar Technology AG 5.4.3 Opening the DC Connector 1. Unscrew the screw connection. 2. Unlocking the DC connector: Insert a 3.5 mm screwdriver into the snap slot on the side and lever it out. 3. Carefully pull the DC connector apart. 4. Loosen the clamping bracket. To do so, insert a 3.5 mm screwdriver into the clamping bracket and lever it out. 5. Remove the cable. ☑ The cable is now removed from the DC connector. 32 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Electrical Connection 5.4.4 Connecting the PV Array (DC) DANGER! Danger to life due to high voltages in the inverter. • Before connecting the PV array, ensure that the miniature circuit‑breaker is switched off. NOTICE! Excessive voltages can destroy the measuring device. • Only use measuring devices with a DC input voltage range up to at least 1 000 V. 1. Disconnect the miniature circuit‑breaker and secure against reconnection. 2. Pull the Electronic Solar Switch downward, slightly towards the wall. 3. Check the connection cable of the PV modules for correct polarity and make sure that the maximum input voltage of the inverter is not exceeded. At an ambient temperature above 10°C, the open‑circuit voltage of the PV modules must not be more than 90% of the maximum inverter input voltage. Otherwise, check the plant design and the PV module connection. If this is not done, the maximum inverter input voltage can be exceeded at low ambient temperatures. Installation Manual SMC46-60A-IA-IEN120471 33 Electrical Connection SMA Solar Technology AG NOTICE! Overvoltage can destroy the inverter. If the voltage of the PV modules exceeds the maximum input voltage of the inverter, it can be destroyed by overvoltage. This will void all warranty claims. • Do not connect strings with an open‑circuit voltage greater than the maximum input voltage of the inverter. • Check the plant design. 4. Check the strings for ground faults as described in section 9.3.1 "Checking the PV Array for Ground Faults" (page 71). 5. Connect the assembled DC connectors to the inverter. ☑ The DC connectors click audibly into position. 6. In order to seal the inverter, all the DC inputs that are not required have to be closed with DC connectors and sealing plugs: Sealing plugs • Do not plug the sealing plugs directly into the DC inputs on the inverter. – For unused DC connectors, push down the clamping bracket and push it onto the cable gland. 1 + 34 SMC46-60A-IA-IEN120471 2 Installation Manual SMA Solar Technology AG Electrical Connection – Plug the sealing plug into the DC connector. + – Tighten the DC connector (torque: 2 Nm). + – Insert the DC connectors with sealing plugs into the corresponding DC inputs on the inverter. ☑ The DC connectors click audibly into position. 7. Ensure that all DC connectors are securely in place. Installation Manual SMC46-60A-IA-IEN120471 35 Electrical Connection SMA Solar Technology AG 8. Check the Electronic Solar Switch for wear, as described in section 8.3 "Checking the Electronic Solar Switch (ESS) for Wear" (page 64) and attach it firmly. NOTICE! Manipulating the connector in the handle can damage the Electronic Solar Switch. The connector inside the handle must remain movable in order to ensure proper contact. Tightening the screw voids all warranty claims and creates a fire risk. • Do not tighten the connector screw in the Electronic Solar Switch handle. NOTICE! Electronic Solar Switch can be damaged. If it is not correctly connected, the Electronic Solar Switch can be damaged by high voltages. • Plug the handle firmly onto the jack of the Electronic Solar Switch. • Make sure that the device is securely in place. ☑ The PV array is connected. You can now commission the inverter as described in section 6 "Commissioning" (page 48). The following connections are optional. 36 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Electrical Connection 5.5 Connection of the SMA Power Balancer The Sunny Mini Central is equipped with the SMA Power Balancer as standard. This enables a circuit connection of 3 Sunny Mini Central inverters to a three‑phase feed‑in system. Each of the 3 Sunny Mini Central devices in a group must be connected to a different line conductor of the low‑voltage grid (L1, L2 and L3). By activating this electronic circuit, you can stipulate how the other 2 Sunny Mini Central inverters are to react if there is a device fault with the 3rd Sunny Mini Central or there is a line voltage fault in its line conductor. Three‑phase grid connection For further information on this subject, see the Technical Information "Three phase connection with Sunny Mini Central" in the download area at www.SMA.de/en. The connections for the SMA Power Balancer are galvanically isolated from the rest of the Sunny Mini Central electronic circuit. 5.5.1 Configuration If the national standard VDE-AR-N4105-MP or VDE-AR-N4105-HP is set, the SMA Power Balancer is activated by default and set to operating mode "PowerGuard" in SMC 4600A‑11, SMC 5000A-11 and SMC 6000A-11. All other national standards deactivate the SMA Power Balancer by default in SMC 4600A-11, SMC 5000A-11 and SMC 6000A-11. The SMA Power Balancer is always deactivated by default in SMC 4600A, SMC 5000A, SMC 5000A-IT, SMC 6000A and SMC 6000A-IT, regardless of which national standard is set. The SMA Power Balancer can only be activated or configured using a communication product. To change the "PowerBalancer" parameter, you need a personal access code – the so‑called SMA Grid Guard Code. The application form for the personal access code is available in the download area at www.SMA.de/en, in the "Certificate" category of the respective inverter. The configuration options are described below. Installation Manual SMC46-60A-IA-IEN120471 37 Electrical Connection SMA Solar Technology AG Configuration Options There are 4 different configuration options for the "PowerBalancer" parameter. Local connection requirements Select the respective setting and always observe the local connection requirements and provisions of your grid operator. • FaultGuard This operating mode allows for the implementation of a three‑phase line voltage monitoring, which also reacts to device faults. – If 1 of the 3 inverters indicates a line voltage fault and stops feeding in, the other 2 inverters also disconnect from the power distribution grid immediately. – If 1 of the 3 inverters indicates a device fault and stops feeding in, the other 2 inverters also disconnect from the power distribution grid 5 minutes later. 38 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Electrical Connection • PhaseGuard This operating mode allows for the implementation of a three-phase grid voltage monitoring. – If 1 of the 3 inverters indicates a line voltage fault and stops feeding in, the other 2 inverters also disconnect from the power distribution grid automatically. – If 1 of the 3 inverters indicates a device fault and stops feeding in, the other 2 inverters are not affected and continue to feed in at full power. Installation Manual SMC46-60A-IA-IEN120471 39 Electrical Connection SMA Solar Technology AG • Off The SMA Power Balancer is deactivated (default setting). – In the event of a device fault or line voltage fault at an inverter, only this inverter is disconnected from the power distribution grid and the other two inverters continue to run at an undiminished power level. • PowerGuard This setting can be selected if the entire PV plant only consists of three 3 Sunny Mini Central inverters and in the event of a malfunction, the unbalanced load should be limited to 4.6 kVA over a 10‑minute average. Deviating unbalanced load limit for Italy The unbalanced load for inverters set to the Italian national standard DK 5940 is limited to 6 kVA over a 10‑minute average. – If 1 of the 3 inverters indicates a line voltage fault or device fault and stops feeding in, the other 2 inverters automatically limit their power to 4.6 kVA over a 10-minute average. 40 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Electrical Connection 5.5.2 Cabling Cable Requirements For cabling the SMA Power Balancer, use a "LiYCY" cable, structured as shown here: • Indoor: LiYCY 2 x 2 x 0.25 • Outdoor: Li‑2YCYv 2 x 2 x 0.25 Position A B C D Installation Manual Designation Flexible insulation Shielding Twisted pair 2 (2 x 0.25 mm²) Twisted pair 1 (2 x 0.25 mm²) SMC46-60A-IA-IEN120471 41 Electrical Connection SMA Solar Technology AG Overview of the Connection Area Object A B C D E F Description Screw terminals for the wire bridge Screw terminals for connecting the cables Jumper slot Flat male tab for grounding the cable shield Silicone tube/cable route Cable glands 42 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Electrical Connection Procedure 1. Open the inverter as described in section 7.2 "Opening the Inverter" (page 55). 2. Insert the cable into each inverter. Use 1 of the 2 enclosure openings (F) on the right‑hand side. DANGER! Danger to life through high voltage if there is a fault with the SMA Power Balancer cable. • Sheath the positive and negative cable conductors in each inverter using the enclosed silicone tube. • Cut the silicone tube to the required length. • The silicone tube must completely cover the cable inside the inverter enclosure. 3. Draw the cable along the cable route (E) as far as the terminal block (B). 4. Ground the cable shield in each inverter at the PE terminal (D). 5. Sheath the positive and negative cable conductors in each inverter with bootlace ferrules. 6. Connect the positive and negative pole to the corresponding screw terminals. 7. In order to connect the 3 inverters together, connect the positive and negative conductors from the 2 other inverters to the terminal block of the middle inverter. The cable length between 2 inverters may not exceed 300 m. Installation Manual SMC46-60A-IA-IEN120471 43 Electrical Connection SMA Solar Technology AG 8. Only in the middle inverter (the one with 2 wires for each terminal), insert one of the provided jumpers into the lowest of the slots as depicted on the right. Do not plug the jumpers in the bottom slot of the 2 other inverters. or Bridge the "A" and "B" screw terminals on the middle inverter with a wire bridge. Do not bridge the "A" and "B" screw terminals in the 2 other inverters. 9. Measure the resistance between the terminal block's positive and negative poles in the middle inverter. ☑ If the resistance is approximately 27.8 k Ω (±370 Ω ), the SMA Power Balancer has been connected correctly. Otherwise, check the cabling. 10. Close all inverters as described in section 7.3 "Closing the Inverter" (page 58). Connection with a Sunny Mini Central 9000TL, 10000TL or 11000TL In order to be able to connect the SMA Power Balancer with a Sunny Mini Central 9000TL, 10000TL or 11000TL, the Sunny Mini Central 4600A, 5000A or 6000A must be equipped with a special plug. 3 inverters are then connected together with a special connection cable. You can order the plug and the connection cable from SMA Solar Technology AG or your specialty retailer. Section 12 "Accessories" (page 85) contains a list of the order numbers. 44 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Electrical Connection 5.5.3 Testing the Functioning To test whether the SMA Power Balancer operates correctly, proceed as follows. 1. Select the "PhaseGuard" setting of the "PowerBalancer" parameter for all 3 inverters. 2. Check whether all inverters in the group are feeding the power distribution grid normally. ☑ If the green LED lights up steadily or if the display message pictured on the right appears, proceed to step 3. E-today Mode 0Wh MPP or ☑ If all inverters in this group show the display message pictured on the right: Check the installation of the SMA Power Balancer and contact the SMA Service Line, if necessary. Disturbance PowerBalance 3. Switch off the miniature circuit‑breaker for 1 of the 3 inverters. • The inverter with a deactivated miniature circuit‑breaker then indicates a line voltage fault with the display message pictured on the right ("Bfr" and "Srr" are irrelevant). • The other 2 inverters then also disconnect themselves from the power distribution grid with the display message pictured on the right. Disturbance Vac-Bfr Disturbance PowerBalance • Both inverters subsequently switch to "Balanced" mode. ☑ If the inverters react as described above, the functionality test has been completed successfully. Otherwise, check the configuration. 4. If applicable, reset the "PowerBalancer" parameter to the desired setting in all inverters. 5. Switch on the miniature circuit‑breaker again. ☑ The functionality test has been completed. Installation Manual SMC46-60A-IA-IEN120471 45 Electrical Connection SMA Solar Technology AG 5.6 Communication The inverter is equipped with a slot for communication interfaces in order to communicate with special data loggers (e.g., Sunny WebBox) or a PC with corresponding software (e.g., Sunny Data Control or Sunny Explorer). Refer to the respective communication interface manual for a detailed wiring diagram and an installation description for the interface. The inverter's active power can be limited or its displacement power factor can be set externally using the Power Reducer Box from SMA Solar Technology AG. Detailed information on the Power Reducer Box is available in its Technical Description at www.SMA.de/en. 5.7 Setting the Grid and Country Parameters Changing grid‑relevant and country parameters To change grid‑relevant parameters, you need a personal access code – the so‑called SMA Grid Guard Code. The application form for the personal access code is available in the download area at www.SMA.de/en, in the "Certificate" category of the respective inverter. Ensure that you discuss the changes to these parameters with your grid operator. A detailed description of the operating parameters for the inverter is available in the download area at www.SMA.de/en in the category "Technical Description" of the respective inverter. 5.7.1 Setting the Installation Country Using the "Default" parameter, you can set the installation country and/or the grid connection standard valid for the country via a communication product (e.g., Sunny WebBox) or a PC with corresponding software (e.g., Sunny Data Control or Sunny Explorer). This, however, is only required if the inverter was originally ordered for another country. You can see the standard to which the inverter was set upon delivery on the type label and on the included supplementary sheet with the default settings. 46 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Electrical Connection 5.7.2 Setting Stand‑alone Grid Operation To operate the inverter in a stand‑alone grid system with Sunny Island, you must set the "Default" parameter to stand‑alone grid ("OFF-Grid") operation. You have several possibilities to set the inverter to stand‑alone grid operation: • Setting via Sunny WebBox or • Setting via Sunny Data Control or Sunny Explorer DANGER! Danger to life due to high voltages in the event of outage of the power distribution grid. If you set the inverter to stand‑alone grid operation, it does not fulfill any country-specific standards and guidelines. If there is a power distribution grid outage, there is consequently a danger of feedback. • Never operate the inverter directly on the power distribution grid when set to stand‑alone grid operation. 5.7.3 Additional Country Parameters Requirement for the setting Set the installation country as described in section 5.7.1 "Setting the Installation Country" (page 46) before setting the country parameter described here. The deactivation criteria (voltage, frequency, impedance) are specified via country parameters as with all Sunny Mini Central inverters. The additional default country parameter "MVtgDirective" expands the deactivation limits of the inverter for voltage and frequency to a maximum/minimum. This country setting may only be selected if the PV plant or the inverter is operated with external three‑phase decoupling protection, which will automatically disconnect the inverter from the power distribution grid if non‑permissible voltage and frequency values occur. Device protection is still guaranteed. DANGER! Risk of lethal electric shock if external decoupling protection is missing. At country setting "MVtgDirective", the inverter may only be operated with an external three‑phase decoupling protection device which complies with the country‑specific requirements. Without such external decoupling protection, the inverter will not disconnect from the power distribution grid when the standard requirement is exceeded. • Install external three‑phase decoupling protection. Installation Manual SMC46-60A-IA-IEN120471 47 Commissioning SMA Solar Technology AG 6 Commissioning 6.1 Commissioning the Inverter 1. Check the following requirements before commissioning: – The inverter is securely in place. – AC cables are correctly connected (power distribution grid). – DC cables (PV strings) are completely connected. – Unused DC inputs are closed using the corresponding DC connectors and sealing plugs. – The enclosure lid is securely screwed in place. – The Electronic Solar Switch is securely plugged. – The miniature circuit‑breaker is correctly laid out. 2. Switch on the miniature circuit‑breaker. ☑ All 3 LEDs are lit or flashing: the startup phase is starting. ☑ Green LED is lit: commissioning was successful. or ☑ Green LED flashes in case of insufficient irradiation: grid connection conditions have not yet been reached. Wait for sufficient irradiation. or ☑ The red or yellow LED is lit or flashing: there is a fault. Proceed to step 3. A Green LED B Red LED C Yellow LED operation ground fault or varistor defective Fault Self‑test in accordance with DK 5940, Ed. 2.2 during initial start-up (applies to Italy only) The Italian DK 5940 standard requires that an inverter must only be connected to the power distribution grid if the disconnection times for overvoltage, undervoltage, minimum frequency and maximum frequency have been checked. Start the self‑test as described in section 6.3 "Self‑test in Accordance with DK 5940, Ed. 2.2 (Applies to Italy Only)" (page 50). The test takes approx. 8 minutes. 3. Read section 9 "Troubleshooting" (page 65) and if necessary, eliminate the error or fault. 48 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Commissioning 6.2 Display Messages During the Startup Phase • After commissioning, the inverter displays the device type in the startup phase. SMC xxx Wrxxx • After 5 seconds or when you tap again on the enclosure lid, the firmware version of the internal processors is displayed by the inverter. • After a further 5 seconds or when you tap again, the configured country standard is displayed by the inverter (example: "VDE-AR-N4105-MP"). Showing the display messages again (valid as of firmware version 2.15) If you want to view the display messages of the startup phase again while in normal operation, tap the enclosure lid twice in quick succession. Installation Manual SMC46-60A-IA-IEN120471 49 Commissioning SMA Solar Technology AG 6.3 Self‑test in Accordance with DK 5940, Ed. 2.2 (Applies to Italy Only) 6.3.1 Starting the Self‑Test by Tapping You can start testing the disconnection times by tapping on the enclosure lid. A prerequisite here is that the country configuration of the inverter has been set to Italy (IT/DK5940) or "trimmed". Proceed as follows for checking the disconnection times: 1. Connect the PV array to the inverter. The inverter can only initialize if the PV array produces enough power. It is therefore not possible to test the disconnection times at night. 2. Connect the inverter on the AC side. For this, you have to establish the AC connection (AC plug or direct connection) and/or switch on the miniature circuit‑breaker. 3. The inverter is now in the initialization phase, i.e. all 3 LEDs are lit at the same time. Start the self‑test immediately after all 3 LEDs have gone out by tapping on the display of the inverter. 4. The question of whether you would like to start the test sequence appears in the display. Tap on the display again within 30 seconds to confirm the question. Once you have started the test sequence, the inverter checks the disconnection times for overvoltage, undervoltage, maximum frequency and minimum frequency one after the other. During the tests, the inverter shows the values in the display which are described in section 6.3.2 "Completion of the Self‑test" (page 51). 50 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Commissioning 6.3.2 Completion of the Self‑test Note the values which are displayed during the self‑test. These values must be entered into a test report. The test results of the individual tests are displayed 3 times, one after the other. The respective display message is displayed for 10 seconds. The self‑test changes the upper and lower disconnection thresholds for each protective function on a linear basis with a modification of 0.05 Hz/s and 0.05 Vn/s for the frequency and voltage monitoring. As soon as the actual measured value is outside the permitted range (altered disconnection threshold), the inverter disconnects itself from the power distribution grid. In this way, the inverter determines the reaction time and checks itself. Overvoltage Test The inverter begins with the overvoltage test. During the test sequence, the voltage limit applied is shown in the display of the inverter. The voltage limit is reduced successively until the disconnection threshold is reached and the inverter disconnects from the power distribution grid. Once the inverter has disconnected from the power distribution grid, the display successively shows the following values one after the other: • Disconnection value, • Calibration value, • Reaction time, • Current line voltage. Installation Manual SMC46-60A-IA-IEN120471 51 Commissioning SMA Solar Technology AG Undervoltage Test After the overvoltage test, the inverter performs the undervoltage test. During the test sequence, the current calibration value of the voltage limit applied is shown in the display of the inverter. The voltage limit is increased successively until the disconnection threshold is reached and the inverter disconnects from the power distribution grid. Once the inverter has disconnected from the power distribution grid, the display successively shows the following values one after the other: • Disconnection value, • Calibration value, • Reaction time, • Current line voltage. 52 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Commissioning Maximum Frequency In a third step, the inverter tests the maximum frequency. During the test sequence, the frequency limit applied is shown in the display of the inverter. The frequency limit is reduced successively until the disconnection threshold is reached and the inverter disconnects from the power distribution grid. Once the inverter has disconnected from the power distribution grid, the display successively shows the following values one after the other: • Disconnection value, • Calibration value, • Reaction time, • Current power frequency. Installation Manual SMC46-60A-IA-IEN120471 53 Commissioning SMA Solar Technology AG Minimum Frequency In the last step, the inverter tests the minimum frequency. During the test sequence, the frequency limit applied is shown in the display of the inverter. The frequency limit is increased successively until the disconnection threshold is reached and the inverter disconnects from the power distribution grid. Once the inverter has disconnected from the power distribution grid, the display successively shows the following values one after the other: • Disconnection value, • Calibration value, • Reaction time, • Current power frequency. Once the inverter has carried out the 4 tests, it switches to "MPP‑Operation (MPP)" mode. The original calibration values are then reset and the inverter automatically connects to the power distribution grid. If you would like to carry out the test again, you must disconnect the inverter, i.e. disconnect it on the AC and DC sides and then later recommission it. You can then restart the self‑test as described in section 6.3.1 "Starting the Self‑Test by Tapping" (page 50). The inverter starts again the test sequence as described in section 6.3.2 "Completion of the Self‑test" (page 51). 54 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Opening and Closing 7 Opening and Closing 7.1 Safety DANGER! Risk of lethal electric shock. Before opening the inverter, observe the following: • Ensure that no voltage is present on the AC side. • Ensure that neither voltage nor current is present on the DC side. NOTICE! Electrostatic discharges can damage the inverter. The internal component parts of the inverter can be irreparably damaged by electrostatic discharge. • Ground yourself before touching a component part. 7.2 Opening the Inverter 1. Disconnect the miniature circuit‑breaker and secure against reconnection. 2. Pull the Electronic Solar Switch downward, slightly towards the wall. 3. Use a current probe to ensure that no current is present in any of the DC cables. ☑ If current is present, check the installation. Installation Manual SMC46-60A-IA-IEN120471 55 Opening and Closing SMA Solar Technology AG 4. Unlock and disconnect all DC connectors. To do this, insert the screwdriver into one of the side slots (blade width: 3.5 mm) and pull the DC connectors straight down. Do not pull on the cable while doing this. ☑ All DC connectors are disconnected from the inverter. The inverter is entirely disconnected from the PV array. DANGER! Danger to life due to high voltages in the inverter. The capacitors in the inverter require 5 minutes to discharge. • Wait 5 minutes before opening the inverter. 5. Ensure that no voltage is present at the DC plugs on the inverter. ☑ If voltage is present, check the installation. 56 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Opening and Closing 6. Loosen all 6 screws of the enclosure lid and remove the enclosure lid from the front. 7. Verify the absence of voltage L with respect to N at the AC terminal with an appropriate measuring device. ☑ If voltage is present, check the installation. 8. Verify the absence of voltage L with respect to PE at the AC terminal with an appropriate measuring device. ☑ If voltage is present, check the installation. ☑ The inverter is open and no voltage is present. Installation Manual SMC46-60A-IA-IEN120471 57 Opening and Closing SMA Solar Technology AG 7.3 Closing the Inverter 1. Secure the enclosure lid with the 6 screws and the corresponding conical spring washers. Tighten the screws with 6 Nm torque in the order shown in the figure on the right. The toothing of the conical spring washers must point toward the enclosure lid. The scope of delivery of the inverter includes another spare screw and conical spring washer. DANGER! Danger to life due to enclosure lid carrying voltage. The grounding of the enclosure lid is ensured by the conical spring washers. • Attach the conical spring washers for all 6 screws with the toothing facing toward the enclosure lid. 2. Check the DC connectors for correct polarity and connect them. To unlock the DC connectors, see section 7.2 "Opening the Inverter" (page 55). 3. Close all the DC inputs that are not needed as described in section 5.4.4 "Connecting the PV Array (DC)" (page 33) to seal the inverter. 58 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Opening and Closing 4. Check the Electronic Solar Switch for wear, as described in section 8.3 and attach it firmly. NOTICE! Manipulating the connector in the handle can damage the Electronic Solar Switch. The connector inside the handle must remain movable in order to ensure proper contact. Tightening the screw voids all warranty claims and creates a fire risk. • Do not tighten the connector screw in the Electronic Solar Switch handle. NOTICE! Electronic Solar Switch can be damaged. If it is not correctly connected, the Electronic Solar Switch can be damaged by high voltages. • Plug the handle firmly onto the jack of the Electronic Solar Switch. • Make sure that the device is securely in place. 5. Switch on the miniature circuit‑breaker. 6. Check whether the display and the LEDs indicate a normal operating state (see section 6 "Commissioning" (page 48)). ☑ The inverter is now closed and in operation. Installation Manual SMC46-60A-IA-IEN120471 59 Maintenance and Cleaning SMA Solar Technology AG 8 Maintenance and Cleaning 8.1 Cleaning the Inverter If the inverter is dirty and the visibility of the operating data and operating states of the inverter is only limited, clean the enclosure lid, the display and the LEDs with a damp cloth. Do not use any corrosive substances (e.g., solvents or abrasives) for cleaning. 8.2 Checking Heat Dissipation 8.2.1 Cleaning the Fans If the fan guards are soiled with loose dust, they can be cleaned using a vacuum cleaner. If you do not achieve satisfactory results with a vacuum cleaner, dismantle the fans for cleaning. Procedure 1. Disconnect the inverter from both the DC and AC sides as described in section 7.2 "Opening the Inverter" (page 55). 2. Wait for the fans to stop rotating. Cleaning the Fan Guards 3. Removing the fan guards: – Press both latches on the right edge of the fan guard to the right using a screwdriver and loosen from the retainer. – Carefully remove the fan guard. 4. Clean the fan guards with a soft brush, a paint brush, a cloth or compressed air. 60 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Maintenance and Cleaning Cleaning the Fans 5. Press the front latches backward and the rear latch forward. 6. Remove the fan by pulling it slowly and carefully downward. 7. Unlock and remove the plug. The fan cables are long enough that you can lift the fans far enough out to disconnect the internal plug in the inverter. 8. Remove the fan. 9. Clean the fan with a soft brush, a paint brush, or a damp cloth. NOTICE! Damage to the fan through use of compressed air. • Do not use compressed air to clean the fan. This can damage the fan. 10. After cleaning, reassemble everything in reverse order. ☑ The fans are cleaned. 11. Check the functioning of the fans as described in the following section. Installation Manual SMC46-60A-IA-IEN120471 61 Maintenance and Cleaning SMA Solar Technology AG 8.2.2 Checking the Fans You can check that the fans are working in 2 ways: • Set the "Fan‑Test" parameter to "1" in the installer mode using Sunny Data Control, Sunny Explorer or Sunny WebBox. or • Plug the provided jumper into the system control board. Setting Parameters 1. Request the installer password from the SMA Service Line (contact: see Page 86). 2. Set the "Fan‑Test" parameter to "1" in the installer mode. 3. Check the fans' air flow. The inverter takes cooling air in from underneath and then blows it back out on the upper sides. Listen for any unusual noise, which could indicate incorrect installation or that the fans are faulty. 4. After checking the fans, set the "Fan‑Test" parameter back to "0". ☑ The test of the fans has been completed. Plugging the Jumper The inverter recognizes the jumper only after the system has been restarted (i.e. all LEDs must have gone out before a restart). 1. Open the inverter as described in section 7.2 "Opening the Inverter" (page 55). 2. Plug the provided jumper in the slot on the system control board as shown below. 3. Close the inverter as described in section 7.3 "Closing the Inverter" (page 58). 62 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Maintenance and Cleaning 4. Check the fans' air flow. The inverter takes cooling air in from underneath and then blows it back out on the upper sides. Listen for any unusual noise, which could indicate incorrect installation or that the fans are faulty. 5. After checking the fans, remove the jumper. Open and close the inverter as described in section 7 "Opening and Closing" (page 55). ☑ The test of the fans has been completed. 8.2.3 Cleaning the Fan Guards The inverter takes cooling air in from underneath via the fans and blows it out again through the fan guards on the upper sides. Clean the fan guards if they are dirty. Procedure 1. Remove the fan guards. Insert your finger above in the space between the fan guard and the enclosure and remove the fan guard to the side. 2. Clean the fan guards with a soft brush, a paint brush, or compressed air. 3. Re‑attach the fan guards to the inverter. The fan guards must be attached according to the inside inscription ("links/left" and "rechts/right"). NOTICE! Risk of damage to the inverter through intrusion of insects. • The fan guards must not be removed permanently, because otherwise the device is not protected against insects entering. Installation Manual SMC46-60A-IA-IEN120471 63 Maintenance and Cleaning SMA Solar Technology AG 8.3 Checking the Electronic Solar Switch (ESS) for Wear Check the Electronic Solar Switch for wear before plugging it in. Depending on the shape of the Electronic Solar Switch, you can estimate the wear on either the metal tongues (shape A) or on the plastic (shape B). Result Measure ☑ The metal tongues in the Electronic Solar 1. Securely attach the Electronic Solar Switch Switch are undamaged and not discolored handle. (A). 2. Commission the inverter as described in section 6 "Commissioning" (page 48). A or ☑ The plastic in the Electronic Solar Switch is undamaged (B). B ☑ The metal tongues in the Electronic Solar Switch have a brown discoloration or are burned through (A). A The Electronic Solar Switch can no longer reliably disconnect the DC side. 1. Replace the Electronic Solar Switch handle before attaching it again (for the order number, see section 12 "Accessories" (page 85)). 2. Recommission the inverter as described in section 6 "Commissioning" (page 48). or ☑ The plastic in the Electronic Solar Switch shows thermal deformation (B). B 64 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Troubleshooting 9 Troubleshooting If the inverter displays other blink codes or error messages than those described below, contact the SMA Service Line. You will also find a description of display messages during operation, status messages and measurement channels in the user manual provided. Do not perform any repairs that are not described here and take advantage of the 24‑hour replacement service (inverter ready for shipping and handed over to a freight‑forwarding company within 24 hours) and the SMA Solar Technology AG repair service instead. 9.1 Blink Codes Green flashing is permanently lit Red flashing is not lit is permanently lit Yellow flashing is not lit is not lit is flashing quickly (3 x per second) is not lit is permanently lit is permanently lit is not lit is not lit is flashing slowly is not lit is not lit (1 x per second) goes out briefly is permanently lit is not lit is not lit is not lit is not lit is not lit is permanently lit is lit/flashing is not lit (approx. 1 x per second) is not lit is lit/flashing Installation Manual Status OK (startup phase) OK (feed‑in operation) ground fault or varistor defective OK (initialization) OK (stop) ground fault or varistor defective OK (waiting, grid monitoring) ground fault or varistor defective OK (derating) OK (nighttime deactivation or Electronic Solar Switch not connected) fault ground fault or varistor defective ground fault or varistor defective and fault SMC46-60A-IA-IEN120471 65 Troubleshooting SMA Solar Technology AG 9.2 Error Messages When a fault occurs, the inverter generates a message which depends on the operating mode and the type of the fault detected. Message !PV‑Overvoltage! Description and corrective measure Overvoltage at DC input. !DISCONNECT DC! Overvoltage can destroy the inverter. Corrective measures Disconnect the inverter from the power distribution grid immediately. 1. Disconnect the miniature circuit‑breaker. 2. Remove the Electronic Solar Switch. 3. Remove all DC connectors. 4. Check the DC voltage: – If the DC voltage is above the maximum input voltage, check the PV plant design or contact the PV array installer. – If the DC voltage is below the maximum input voltage, reconnect the inverter to the PV array as described in section 5.4.4 "Connecting the PV Array (DC)" (page 33). ACVtgRPro If the message occurs again, disconnect the inverter again and contact the SMA Service Line (see section 13 "Contact" (page 86)). The 10‑minute average line voltage is no longer within the permissible range. This can be caused by either of the following: • The line voltage at the terminal is too high. • The grid impedance at the terminal is too high. The inverter disconnects to assure compliance with the power quality of the power distribution grid. Corrective measures Check the line voltage at the terminal of the inverter: • If, due to the local grid conditions, the line voltage is 253 V or more, ask the grid operator whether the voltage at the feed‑in point can be adjusted, or whether they would agree to an alteration of the limiting value of parameter "ACVtgRPro" for power quality monitoring. Bfr‑Srr • If the line voltage is continually within the tolerance range and this error message is still displayed, contact the SMA Service Line. Internal measurement comparison fault or hardware defect. Corrective measures • If this fault occurs frequently, contact the SMA Service Line. 66 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Message Derating Troubleshooting Description and corrective measure The "Derating" operating state is a normal operating state which may occur occasionally and can have several causes. Once the inverter enters the "Derating" operating state, it will display the "Derating" warning until the next total disconnection of the device (at the end of the day). Corrective measures EEPROM EEPROM dBh EeRestore Fac‑Bfr Fac‑Srr FacFast • Check the heat dissipation as described in section 8.2 "Checking Heat Dissipation" (page 60). Transition fault while data is being written or read from EEPROM. The data is not relevant for safe operation. • This fault has no effect on the performance of the inverter. EEPROM data is defective. The inverter has switched itself off because the loss of data has disabled important functions of the inverter. Corrective measures • Contact the SMA Service Line. One of the duplicate records in the EEPROM is defective and has been reconstructed without loss of data. • This error message only serves to inform you and has no effect on the performance of the inverter. The power frequency is no longer within the permissible range ("Bfr"/"Srr"/"Fast" is an internal message that has no meaning for the user). The inverter disconnects itself from the power distribution grid for safety reasons. Corrective measures • Check the grid connection and contact the grid operator if necessary. K1‑Close K1‑Open Imax • If the power frequency is within the tolerable range, but "Fac‑Bfr", "Fac‑Srr" or "FacFast" faults are still displayed, contact the SMA Service Line. Error during relay test. Corrective measures • If this fault frequently occurs or occurs several times consecutively, contact the SMA Service Line. Overcurrent on the AC side. This message is displayed if the current in the AC grid is higher than specified. Corrective measures • Check the plant design and grid conditions. Installation Manual SMC46-60A-IA-IEN120471 67 Troubleshooting SMA Solar Technology AG Message MSD-Fac Description and corrective measure Internal measurement comparison fault or hardware defect. Corrective measures MSD‑Vac • If this fault occurs frequently, contact the SMA Service Line. Internal measurement comparison fault or hardware defect. Corrective measures MSD‑Timeout • If this fault occurs frequently, contact the SMA Service Line. Internal measurement comparison fault or hardware defect. Corrective measures • If this fault occurs frequently, contact the SMA Service Line. The "OFFSET" operating state is a normal operating state that occurs prior to grid monitoring. If "OFFSET" is displayed as an error, there is a fault in the data logging. Corrective measures OFFSET PowerBalance • If this fault occurs frequently, contact the SMA Service Line. The Sunny Mini Central is part of a three‑phase system with 2 further Sunny Mini Central inverters equipped with the SMA Power Balancer for preventing unbalanced loads. The operating parameter "PowerBalancer" is set to "PhaseGuard" or "FaultGuard". Corrective measures • For detailed descriptions of the operation modes "PhaseGuard" and "FaultGuard", refer to section 5.5 "Connection of the SMA Power Balancer" (page 37). The electrical insulation between the PV plant and ground is defective. The resistance between the DC plus and/or DC minus connection and ground is outside the defined limit range. Corrective measures Riso • Check the insulation of the PV plant. • Check the PV plant for ground faults as described in section 9.3.1 "Checking the PV Array for Ground Faults" (page 71). The inverter's firmware is faulty. Corrective measures ROM Trafo‑Temp‑F • If this fault occurs frequently, contact the SMA Service Line. Temperatures in the transformer have exceeded the acceptable limit. The inverter stops feeding the grid until the temperature lies within the acceptable range. Corrective measures • If this fault occurs frequently, check the heat dissipation. 68 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Message Trafo‑Temp‑W Shutdown Vac‑Bfr Vac‑Srr Troubleshooting Description and corrective measure If the transformer reaches an inadmissibly high temperature, the inverter stops feeding the grid until the transformer has reached an admissible temperature and the plant can begin feeding the grid again. The "Trafo‑Temp‑W" warning is displayed until the device is completely disconnected. Corrective measures • Check the heat dissipation of the inverter. Temporary inverter fault. Corrective measures • Contact the SMA Service Line. The line voltage is no longer within the permissible range ("Bfr" or "Srr" is an internal message of no relevance for the user). This fault can be caused by any of the following conditions: • Power distribution grid disconnected (miniature circuit‑breaker, fuse) • AC cable is broken • AC cable is highly resistive The inverter disconnects itself from the power distribution grid for safety reasons. Corrective measures • Check the line voltage and connection on the inverter. • If the line voltage lies outside the acceptable range because of local grid conditions, ask the grid operator if the voltages can be adjusted at the feed‑in point or if they agree to changes in the values of the monitored operating limits (operating parameters: Vac‑Min and Vac‑Max). • If the line voltage lies within the tolerance range, yet "Vac‑Bfr" or "Vac‑Srr" faults are still displayed, contact the SMA Service Line. Installation Manual SMC46-60A-IA-IEN120471 69 Troubleshooting SMA Solar Technology AG Message UpvMax Description and corrective measure Overvoltage at DC input. The inverter may be damaged. Corrective measures Disconnect the inverter from the power distribution grid immediately. 1. Disconnect the miniature circuit‑breaker. 2. Remove the Electronic Solar Switch. 3. Remove all DC connectors. 4. Check the DC voltage: – If the DC voltage is above the maximum input voltage, check the PV plant design or contact the PV array installer. – If the DC voltage is below the maximum input voltage, reconnect the inverter to the PV array as described in section 5.4.4 "Connecting the PV Array (DC)" (page 33). Watchdog Watchdog Srr If the message occurs again, disconnect the inverter again and contact the SMA Service Line (see section 13 "Contact" (page 86)). Internal program run fault. Corrective measures • If this fault occurs frequently, contact the SMA Service Line. 9.3 Red LED is Permanently Lit If the red status display LED is permanently lit during operation, there is a ground fault in the PV array or at least one of the varistors for overvoltage protection is defective. Procedure 1. Check for ground faults in the PV array as described in section 9.3.1 "Checking the PV Array for Ground Faults" (page 71). 2. If the red LED continues to be lit, check the varistors as described in section 9.3.2 "Checking the Function of the Varistors" (page 73). 70 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Troubleshooting 9.3.1 Checking the PV Array for Ground Faults 1. Disconnect the inverter from both the DC and AC sides as described in section 7.2 "Opening the Inverter" (page 55). DANGER! Risk of lethal electric shock. • Only touch the cables of the PV array on their insulation. • Do not connect strings with ground faults to the inverter. NOTICE! Excessive voltages can destroy the measuring device. • Only use measuring devices with a DC input voltage range up to at least 1 000 V. 2. Measure the voltages between the positive pole of each string and the ground potential (PE). 3. Measure the voltages between the negative pole of each string and the ground potential (PE). 4. Measure the voltages between the positive and negative poles of each string. ☑ A ground fault exists if the measured voltages are stable and the sum of the voltages from the positive pole to the ground potential and from the negative pole to the ground potential of a string is approximately equal to the voltage between the positive and negative poles. Installation Manual SMC46-60A-IA-IEN120471 71 Troubleshooting SMA Solar Technology AG Result ☑ You have found a ground fault. Measure • The installer of the PV array must remedy the ground fault in the affected string. You can determine the location of the ground fault as described below. • Do not reconnect the faulty string. ☑ You have found no ground fault. • Close the inverter and commission it as described in section 7.3 "Closing the Inverter" (page 58). It is likely that one of the thermally monitored varistors is defective. • Check the varistors as described in section 9.3.2 "Checking the Function of the Varistors" (page 73). Location of the Ground Fault The approximate position of the ground fault can be determined from the ratio of the measured voltages between the positive pole against ground potential (PE) and the negative pole against ground potential (PE). Example: In this case, the ground fault is between the 2nd and 3rd PV modules. ☑ The ground fault check is now complete. 72 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Troubleshooting 9.3.2 Checking the Function of the Varistors Varistors are wearing parts. Their functional efficiency diminishes with age or following repeated responses as a result of overvoltages. It is therefore possible that one of the thermally monitored varistors has lost its protective function, and thus the red LED is lit. Position of varistors You can determine the position of the varistors using the illustration below. Observe the following assignment of the terminals: • Terminal A: outer terminal (varistor connection with loop [crimp]) • Terminal B: middle terminal • Terminal C: outer terminal (varistor connection without loop [crimp]) Check the function of the varistors as described below: 1. Open the inverter as described in section 7.2 "Opening the Inverter" (page 55). 2. With the aid of a multimeter, determine for both varistors in the installed state whether a conductive connection exists between connectors B and C. Result Measure ☑ There is a conductive connection. There is probably a different error in the inverter. • Contact the SMA Service Line (see section 13 "Contact" (page 86)). Installation Manual SMC46-60A-IA-IEN120471 73 Troubleshooting SMA Solar Technology AG Result ☑ There is no conductive connection. Measure The respective varistor is defective and must be replaced. Varistor failure is generally due to influences that affect all varistors similarly (temperature, age, induced overvoltage). SMA Solar Technology AG recommends that you replace both varistors. The varistors are specially manufactured for use in the inverter and are not commercially available. They must be ordered directly from SMA Solar Technology AG (see section 12 "Accessories" (page 85)). • To replace the varistors, proceed to step 3. NOTICE! Destruction of the inverter due to overvoltage. If varistors are missing, the inverter is no longer protected against overvoltages. • Replacement varistors should be obtained as soon as possible. • Do not operate the inverter without varistors in PV plants with a high risk of overvoltages. 3. Insert an insertion tool into the openings of the terminal contacts (1). ☑ This releases the terminals. If you do not receive an insertion tool for operating the terminals with your replacement varistors, contact SMA Solar Technology AG. As an alternative, the individual terminal contacts can be operated using a 3.5 mm wide screwdriver. 4. Remove the varistor (2). 5. Insert the new varistor (3). The pole with the small loop (crimp) must be fitted to terminal A when replacing the varistor. 6. Close the inverter as described in section 7.3 "Closing the Inverter" (page 58). ☑ The check and replacement of the varistors is completed. 74 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Decommissioning 10 Decommissioning 10.1 Disassembling the Inverter 1. Open the inverter as described in section 7.2 "Opening the Inverter" (page 55). 2. Remove all cables from the inverter. 3. Close the inverter with the 6 screws and the corresponding conical spring washers. 4. Remove the fan guards from both sides. 5. Remove the 2 screws on the left and right side of the inverter that attach it to the wall bracket. 6. Disconnect the anti‑theft protection, if applicable. Installation Manual SMC46-60A-IA-IEN120471 75 Decommissioning SMA Solar Technology AG 7. Remove the inverter upwards from the wall mounting bracket. 8. Use the side handles (above and below) or a steel rod (maximum diameter 30 mm) to transport the inverter. The rod must be pushed through the enclosure openings. ☑ The inverter is disassembled. 10.2 Packing the Inverter If possible, always pack the inverter in its original packaging. If it is no longer available, you can also use an equivalent carton. The carton must be completely closeable, have a handle system and be made to support both the weight and size of the inverter. 10.3 Storing the Inverter Store the inverter in a dry place where ambient temperatures are always between ‒25°C and +60°C. 10.4 Disposing of the Inverter Dispose of the inverter at the end of its service life in accordance with the current locally applicable disposal regulations for electronic waste. Alternatively, send it back to SMA Solar Technology AG with shipping paid by sender, and labeled "ZUR ENTSORGUNG" ("for disposal") (contact see Page 86). 76 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Technical Data 11 Technical Data 11.1 DC/AC 11.1.1 Sunny Mini Central 4600A DC Input Maximum DC power at cos φ = 1 Maximum input voltage* MPP voltage range Rated input voltage Minimum input voltage Start input voltage Maximum input current Maximum input current per string Number of independent MPP inputs Strings per MPP input 5 250 W 600 V 246 V … 480 V 246 V 211 V 300 V 26 A 26 A 1 4 * The maximum open-circuit voltage that can occur with ‒10°C cell temperature may not exceed the maximum input voltage. Installation Manual SMC46-60A-IA-IEN120471 77 Technical Data SMA Solar Technology AG AC Output Rated power at 230 V, 50 Hz Maximum apparent AC power* Rated grid voltage Nominal AC voltage AC voltage range Nominal AC current at 220 V Nominal AC current at 230 V Nominal AC current at 240 V Maximum output current Total harmonic factor of the output current with AC voltage < 2% and AC power > 50% of rated power Rated power frequency AC power frequency Operating range at AC power frequency 50 Hz Operating range at AC power frequency 60 Hz Displacement power factor, adjustable** Power factor at nominal AC power*** Feed‑in phases Connection phases Overvoltage category according to IEC 60664‑1 4 600 W 5 000 VA 230 V 220 V/230 V/240 V 160 V … 265 V 20.9 A 20.0 A 19.16 A 26 A ≤ 3% 50 Hz 50 Hz/60 Hz 44 Hz … 55 Hz 54 Hz … 65 Hz 0.8overexcited … 0.8underexcited 1 1 1 III * 4 600 VA with VDE-AR-N 4105 ** Applies to SMC 4600A-11 *** Applies to SMC 4600A Efficiency Maximum efficiency, ηmax European weighted efficiency, ηEU 78 SMC46-60A-IA-IEN120471 96.1% 95.3% Installation Manual SMA Solar Technology AG Technical Data 11.1.2 Sunny Mini Central 5000A DC Input Maximum DC power at cos φ = 1 Maximum input voltage* MPP voltage range Rated input voltage Minimum input voltage Start input voltage Maximum input current Maximum input current per string Number of independent MPP inputs Strings per MPP input 5 750 W 600 V 246 V … 480 V 246 V 211 V 300 V 26 A 26 A 1 4 * The maximum open‑circuit voltage that can occur with ‒10°C cell temperature may not exceed the maximum input voltage. Installation Manual SMC46-60A-IA-IEN120471 79 Technical Data SMA Solar Technology AG AC Output Rated power at 230 V, 50 Hz Maximum apparent AC power Rated grid voltage Nominal AC voltage AC voltage range Nominal AC current at 220 V Nominal AC current at 230 V Nominal AC current at 240 V Maximum output current Total harmonic factor of the output current with AC voltage < 2% and AC power > 50% of rated power Rated power frequency AC power frequency Operating range at AC power frequency 50 Hz Operating range at AC power frequency 60 Hz Displacement power factor, adjustable* Power factor at nominal AC power** Feed‑in phases Connection phases Overvoltage category according to IEC 60664‑1 5 000 W 5 500 VA 230 V 220 V/230 V/240 V 160 V … 265 V 22.7 A 21.7 A 20.8 A 26 A ≤ 3% 50 Hz 50 Hz/60 Hz 44 Hz … 55 Hz 54 Hz … 65 Hz 0.8overexcited … 0.8underexcited 1 1 1 III * Applies to SMC 5000A-11 ** Applies to SMC 5000A/SMC 5000A-IT Efficiency Maximum efficiency, ηmax European weighted efficiency, ηEU 80 SMC46-60A-IA-IEN120471 96.1% 95.3% Installation Manual SMA Solar Technology AG Technical Data 11.1.3 Sunny Mini Central 6000A DC Input Maximum DC power at cos φ = 1 Maximum input voltage* MPP voltage range Rated input voltage Minimum input voltage Start input voltage Maximum input current Maximum input current per string Number of independent MPP inputs Strings per MPP input 6 300 W 600 V 246 V … 480 V 246 V 211 V 300 V 26 A 26 A 1 4 * The maximum open‑circuit voltage that can occur with ‒10°C cell temperature may not exceed the maximum input voltage. AC Output Rated power at 230 V, 50 Hz Maximum apparent AC power Rated grid voltage Nominal AC voltage AC voltage range Nominal AC current at 230 V Nominal AC current at 240 V Maximum output current Total harmonic factor of the output current with AC voltage < 2% and AC power > 50% of rated power Rated power frequency AC power frequency Operating range at AC power frequency 50 Hz Operating range at AC power frequency 60 Hz Displacement power factor, adjustable* Power factor at nominal AC power** Feed‑in phases Connection phases Overvoltage category according to IEC 60664‑1 6 000 W 6 000 VA 230 V 220 V/230 V/240 V 160 V … 265 V 26 A 25 A 26 A ≤ 3% 50 Hz 50 Hz/60 Hz 44 Hz … 55 Hz 54 Hz … 65 Hz 0.8overexcited … 0.8underexcited 1 1 1 III * Applies to SMC 6000A-11 ** Applies to SMC 6000A/SMC 6000A-IT Installation Manual SMC46-60A-IA-IEN120471 81 Technical Data SMA Solar Technology AG Efficiency Maximum efficiency, ηmax European weighted efficiency, ηEU 96.1% 95.3% 11.2 General Data Width x height x depth with Electronic Solar Switch Weight Length x width x height of packaging Transport weight Climatic category according to IEC 60721‑2‑1 Operating temperature range Maximum permissible value for relative humidity, non‑condensing Maximum operating altitude above MSL Noise emission (typical) Power loss in night operation Topology Cooling concept Fan connection Electronics degree of protection according to IEC 60529 Protection class according to IEC 62103 468 mm x 613 mm x 242 mm 63 kg 396 mm x 803 mm x 596 mm 68 kg 4K4H ‒25°C … +60°C 100% 2 000 m ≤ 42 dB(A) 0.25 W LF transformer OptiCool designed for safe disconnection in accordance with DIN EN 50178:1998‑04 IP65 I 11.3 Protective Devices DC reverse polarity protection Input‑side disconnection device DC overvoltage protection AC short‑circuit current capability Grid monitoring Maximum permissible fuse protection Ground fault monitoring Galvanic isolation 82 SMC46-60A-IA-IEN120471 short‑circuit diode Electronic Solar Switch thermally monitored varistors current control SMA Grid Guard 2.1 40 A Insulation monitoring: Riso > 1 MΩ available Installation Manual SMA Solar Technology AG Technical Data National standard as at 01/2012 SMC 4600A-11 SMC 5000A-11 SMC 6000A-11 SMC 4600A SMC 5000A SMC 6000A SMC 5000A-IT SMC 6000A-IT 11.4 National Standards VDE0126-1-1 VDE-AR-N-4105 AS 4777 C10/11 PPDS GBT19939-2005 VDE0126-1-1/ UTE C15-712-1 UTE C15-712-1/ EDF SEI req. PPC SI 4777 DK5940 EN 50438* RD 1663/2000 RD 661/2007 IEC 61727 PEA G83/1-1 G59/2 ✓ ✓ ○ ○ ○ ○ ○ ✓ ✓ ○ ○ ○ ○ ○ ✓ ✓ ○ ○ ○ ○ ○ ✓ ‒ ‒ ✓ ✓ ✓ ✓ ✓ ‒ ✓ ✓ ✓ ✓ ✓ ✓ ‒ ✓ ✓ ✓ ✓ ✓ ‒ ‒ ‒ ‒ ‒ ‒ ‒ ‒ ‒ ‒ ‒ ‒ ‒ ‒ ○ ○ ○ ✓ ✓ ✓ ‒ ‒ ○ ○ ‒ ✓ ○ ○ ‒ ○ ‒ ○ ○ ‒ ✓ ○ ○ ✓ ○ ‒ ○ ○ ‒ ✓ ○ ○ ✓ ○ ‒ ✓ ✓ ‒ ✓ ✓ ✓ ‒ ✓ ‒ ✓ ✓ ‒ ✓ ✓ ✓ ✓ ✓ ‒ ✓ ✓ ‒ ✓ ✓ ✓ ✓ ✓ ✓ ‒ ‒ ✓ ‒ ‒ ‒ ‒ ‒ ‒ ‒ ‒ ✓ ‒ ‒ ‒ ‒ ‒ ‒ * EN 50438: Does not apply to all national standard deviations. ○ In planning 11.5 Climatic Conditions According to IEC 60721‑3‑4, Installation Type C, Class 4K4H Extended temperature range Extended air humidity range Extended air pressure range ‒25°C … +60°C 0% … 100% 79.5 kPa … 106 kPa According to IEC 60721‑3‑4, Transport Type E, Class 2K3 Temperature range Installation Manual ‒25°C … +70°C SMC46-60A-IA-IEN120471 83 Technical Data SMA Solar Technology AG 11.6 Features DC connection AC connection Display Bluetooth® Wireless Technology RS485, galvanically isolated SUNCLIX DC connector screw terminal LC text display optional optional 11.7 Electronic Solar Switch (ESS) Electrical endurance in the event of a short circuit, with a nominal current of 35 A Maximum switching current Maximum switching voltage Maximum PV power Degree of protection when plugged Degree of protection when unplugged min. 50 switching processes 35 A 800 V 12 kW IP65 IP21 11.8 Torque Enclosure lid screws Additional ground terminal Cheese‑head screw for attaching the enclosure to the wall mounting bracket SUNCLIX lock nut Screw terminal AC connection RS485 communication connection 6.0 Nm 6.0 Nm 6.0 Nm 2.0 Nm 2.5 Nm 1.5 Nm 11.9 Distribution Systems IT system TN‑C system TN‑S system TN‑C‑S system TT system Split Phase 84 SMC46-60A-IA-IEN120471 suitable suitable suitable suitable suitable suitable Installation Manual SMA Solar Technology AG Accessories 12 Accessories You will find the corresponding accessories and spare parts for your product in the following overview. If required, you can order these from SMA Solar Technology AG or your specialty retailer. Designation Bluetooth retrofit kit Insertion tool for the replacement of varistors Electronic Solar Switch Brief description Bluetooth communication interface insertion tool for varistors SMA order number BTPBINV‑NR SB‑TVWZ ESS handle spare part ESS-HANDLE:04 Negative grounding set retrofit kit for the negative connection to ground of the DC input Positive grounding set retrofit kit for the positive connection to ground of the DC input Replacement varistors set of thermally monitored varistors (2) incl. insertion tool Radio retrofit kit radio Piggy‑Back for retrofitting an inverter for communication with Sunny Beam, including antenna, coaxial cable, and PG cable gland (metal) Fan guard fan guard set "right and left" as spare part Power Balancer plug retrofit kit for retrofitting a Sunny Mini Central equipped with an SMA Power Balancer to the SMA Power Balancer plug‑in system RS485 retrofit kit RS485 interface SMA Power Balancer connecting cable (2 x 2 m) for Y cable SMA Power Balancer plug‑in system SUNCLIX DC connector field plug for conductor cross‑sectional areas 2.5 mm² … 6 mm² Installation Manual Also enter the inverter's serial number. ESHV‑N‑NR ESHV‑P‑NR SB‑TV4 BEAMPB‑NR 45‑7202 PBL‑SMC‑10‑NR 485PB‑SMC‑NR PBL‑YCABLE‑10 SUNCLIX‑FC6‑SET SMC46-60A-IA-IEN120471 85 Contact SMA Solar Technology AG 13 Contact If you have technical problems concerning our products, contact the SMA Service Line. We need the following data in order to provide you with the necessary assistance: • Inverter type • Inverter serial number • Type and number of the PV modules connected • Optional equipment, e.g. communication products • Blink code or display message of the inverter SMA Solar Technology AG Sonnenallee 1 34266 Niestetal, Germany www.SMA.de SMA Service Line Inverters +49 561 9522 1499 Communication: +49 561 9522 2499 Fax: +49 561 9522 4699 E‑Mail: ServiceLine@SMA.de 86 SMC46-60A-IA-IEN120471 Installation Manual SMA Solar Technology AG Legal Restrictions The information contained in this document is the property of SMA Solar Technology AG. Publishing its content, either partially or in full, requires the written permission of SMA Solar Technology AG. Any internal company copying of the document for the purposes of evaluating the product or its correct implementation is allowed and does not require permission. SMA Factory Warranty The current guarantee conditions come enclosed with your device. These are also available online at www.SMA.de and can be downloaded or are available on paper from the usual sales channels if required. Trademarks All trademarks are recognized even if these are not marked separately. Missing designations do not mean that a product or brand is not a registered trademark. The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by SMA Solar Technology AG is under license. 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 2012 SMA Solar Technology AG. All rights reserved Installation Manual SMC46-60A-IA-IEN120471 87 4."4PMBS5FDIOPMPHZ XXX4."4PMBSDPN 4."4PMBS5FDIOPMPHZ"( XXX4."EF 4.""NFSJDB --$ XXX4.""NFSJDBDPN 4."5FDIOPMPHZ"VTUSBMJB1UZ -UE XXX4.""VTUSBMJBDPNBV 4."#FOFMVY413XXX4."#FOFMVYDPN 4."#FJKJOH$PNNFSDJBM$P -UE XXX4."$IJOBDPN 4."$[FDI3FQVCMJDTSP XXX4."$[FDIDPN 4."'SBODF4"4 XXX4."'SBODFDPN 4.")FMMBT"& XXX4.")FMMBTDPN 4."*C©SJDB5FDOPMPHB4PMBS 4- XXX4."*CFSJDBDPN 4."*UBMJB4SM XXX4."*UBMJBDPN 4."5FDIOPMPHZ,PSFB$P -UE XXX4.",PSFBDPN
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