Enecsys Enables OPTIMAL SOLAR SOLUTIONS intelligent reliable power Enecsys Installation and Operation Guide Enecsys Micro inverters Enecsys Gateway Enecsys Repeater Enecsys Double Repeater Document Number: IOG010212 Version: 1.6 June 6, 2012 www.enecsys.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 Table of Contents 1 Important Safety Instructions 4 1.1 Audience 1.2 Products covered by this manual 1.3 Conventions used in this manual 1.4 Safety 1.5 Installation compliance requirements 1.6 Installation safety instructions 1.7 System installation best practices 4 4 5 5 7 8 9 2 Installation Sequence 10 2.1 Customer site inspection 2.1.1 Installation assumptions 2.1.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 5.5 Installing a double repeater 5.5.1 Mounting the double repeater 5.5.2 Mounting the external antenna 5.5.3 Connecting the double repeater 23 23 24 24 6 Installing the micro inverters 26 6.1 Single micro inverter 6.2 Mounting the single micro inverter 6.3 Duo micro inverter 6.4 Mounting the duo micro inverter 6.5 Installing and connecting the AC bus cabling, single and duo 6.5.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 1 Important Safety Instructions SAVE THESE INSTRUCTIONS – This manual contains important instructions that must be followed during installation and maintenance of all the micro inverters covered in the manual. 1.1 Audience This manual is intended for installers and electricians involved in the installation and set up of Enecsys Solar micro inverter systems.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 1.3 Conventions used in this manual The following conventions are used throughout this manual. These conventions should be noted and followed at all times. WARNING Warning statements must be heeded at all times. A warning symbol indicates that a process or instrument has the potential to harm or cause lethal injury if the correct method of handling is not employed.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 WARNING Isolation of the AC cabling The AC wiring from the inverters must have provision for electrical isolation from the grid mains supply (for example, by using a circuit breaker), so that inspection, fault detection, testing, maintenance and repair can be performed. WARNING Never disconnect any Photovoltaic module from an Enecsys micro inverter without first isolating the AC mains.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 ATTENTION: Protection on the AC wiring Further protection on the AC wiring from the inverters must be provided and may be required by local and national wiring Regulations. This protection is likely to include Residual Current Devices, Earth Fault Monitors and/or Circuit Breakers. This product can cause current with a DC component.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 For the USA: National Electrical Code, ANSI NFPA 70 For Canada: Canadian Electrical Code, Part 1 • For UL 1741 compliant Installations: The system shall not be aggregated above 30kW on a point of common connection. The inverters must always be installed on a branch circuit with a 2P + 1P external transient voltage surge arrestor. The external device must meet IEC 61643-1 class II requirements.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 WARNING: Do not connect this or any other Enecsys micro inverter to an external battery. WARNING: During normal use, the case temperature of the micro inverter can exceed 70°C. Install it such that casual contact with the unit is prevented. WARNING: if connections are not made in the correct order, a voltage may be present at the exposed wires on the grid connect cable.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 2 Installation Sequence 2.1 Customer site inspection CAUTION: All work carried out at a customer site must follow the health and safety instructions for working at height for the country in which the system is installed. (For example, in the UK, this is laid down in the Work at Height Regulations 2005. In the US, there are OSHA standards for Fall Protection.) 2.1.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 Q: Why is it recommended to set up the gateway as early as possible during the installation? A: Once the gateway is functioning it will show which individual inverters have DC connections, even without AC power to the inverters. Solving connection issues before finalization can help the installation to proceed more efficiently. 2.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 2.9 Set up the new installation on the Enecsys monitoring website WARNING: The Enecsys micro inverter, gateway, and monitoring components work in conjunction to report faults. For NEC compliance, do not install the PV system without the micro inverter, gateway, and monitoring components in place. o o If the installer has not worked with Enecsys micro inverters before, it’s time to set up an Installer Account.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 3 Installing the Gateway • The gateway is connected to the Internet using an Ethernet port on the customer’s router. • It communicates with the micro inverters so the PV installation can be monitored using an Internet browser. It has a screen, shown below, which will be used later in the installation to check communication with the micro inverters. • It must be installed indoors near a power outlet for the plug.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 CAUTION: the gateway must only be used with the antenna that is already fitted to it. It must NEVER be connected directly to an external antenna mounted on the roof of the building or anywhere else, as it has no surge protection from lightning. If you need to use an external antenna then you must install a double repeater. See section 5, “Using Enecsys Repeaters”.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 3.2 Connecting the gateway • • The Enecsys gateway requires the following connections: o 5V DC power input from the plug-top power supply. o Ethernet connection to the customer’s router. When the DC power adapter is switched on at the mains, the Enecsys gateway will power up immediately and its screen will display the “User Mode” screen. To enter installation information, the gateway needs to be in Installer Mode.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 4 Using the Enecsys Gateway The gateway should already be installed: see Section 3, “Installing the Gateway”. 4.1 Checking communication between the gateway and the micro inverters The gateway default display is User Mode. During routine operation, this screen shows enough information for the user to see that the inverters are operating and reporting to the monitoring system. • Gateway IP address.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 • To select Installer Mode, press the Installer Mode switch with the sharp end of a pencil or a straightened paper clip, and keep it pressed for 5 seconds. • To return to User Mode: o press the Installer Mode switch again just briefly, or o disconnect the gateway from its power source, then power up again. 4.1.3 Gateway installer mode screen 4.1.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 4.1.5 Installer Mode screen symbols Screen Symbol Description “ENECSYS” is always displayed. Enecsys gateway IP address. Gateway server IP address. Number must be equal to the total number of inverters and repeaters installed. If 0 displays, there is no communication link. If the number is low, test connections. Communication link quality: a reliable communication link has been established. This symbol must be displayed.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 5 Using Enecsys Repeaters The Enecsys gateway receives signals from the micro inverters on the roof and broadcasts the data over the Internet to the Enecsys Monitoring server. If the gateway cannot receive strong enough signals from micro inverters, a repeater installed nearer the PV modules on the roof will receive the signals, boost them, and then relay them to the gateway.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 5.3 Using the double repeater with external antenna Even with a single repeater installed in the installation space, it may not be possible for the gateway to receive signal from the micro inverters. This can happen for the following reasons: • The roof may be made out of metal, or be lined with metal foil. • The distance between the micro inverters and the single repeater or gateway may be too great.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 5.4 Installing one or more single repeaters The single repeater should ideally be installed in the roof space, directly below the micro inverters. It must be installed near a mains power socket for the plug-top mains adapter.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 5.4.1 Mounting the single repeater • The single repeater must be installed indoors near a mains power socket. • It can be freestanding, either upright as shown in the illustration, or laid flat on its plastic feet. • It can be wall mounted using two screws in the position shown in the diagram. • It can be mounted using sticky pads in the position shown in the diagram.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 5.5 Installing a double repeater The double repeater can be installed anywhere in the building, but it must be possible to pass a coaxial cable from the double repeater to the external antenna which must be installed above the roof. The double repeater must be installed near a mains power socket for the plugtop mains adapter.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 5.5.2 Mounting the external antenna • The external antenna must be mounted on the roof, as close to all the micro inverters as possible. • The external antenna must be below the height of the lowest inverter: for best results, mount it horizontally. Mounted horizontally along the inside of the bottom rail of the PV mounting frame is a good position.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 Connections for the double repeater: o 5V DC power input from the plug-top power supply o connection via coaxial cable to the external antenna. • Pass the DC power cable through the slot in the lower side of the case as shown in the diagram. • When the DC power adapter is switched on at the mains, the double repeater will start working immediately.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 6 Installing the micro inverters • Note that a Torx t20 driver is required for the inverter ground/earth connections. • Use the “PV module / micro inverter serial number grid” sheet in section 10 to keep track of the inverter serial numbers as they are installed in place. The stickers on the inverter packaging should be removed and stuck to the sheet to refer to later.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 Single micro inverters are available in the following models with various power capacities and DC input MPPT voltage ranges: Model Power* MPPT Range (DC volts)* SMI-S217W-60 217W 23 – 35 SMI-S240W-60 240W 23 – 35 SMI-S200W-72 200W 30 – 42 SMI-S240W-72 240W 30 – 42 SMI-S263W-72 263W 30 – 42 *Consult the datasheets on Enecsys’s website for most current information.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 6.2 Mounting the single micro inverter The single micro inverter has several mounting points. • The installer must choose the most suitable method of mounting the micro inverter. • The body of the micro inverter must not be in contact with either the roof surface or the PV module. • There must be at least 10mm clearance between the body of the micro inverter, the roof surface and the rear of the PV module.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 6.3 Duo micro inverter A B C D E F G H I J Enecsys duo micro inverter Distribution unit (connection block). PV module Grid connect cable Enecsys repeater Enecsys gateway Enecsys monitoring Country specific disconnect (such as an isolation switch) Generation meter Mains AC utility The duo micro inverter connects to one or two photovoltaic modules.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 Duo micro inverters are available in the following models with two different power capacities and DC input MPPT voltage ranges: Model Power* MPPT Range (DC volts)* SMI-D360W-72 360W 30 – 42 SMI-D480W-60 480W 24 – 35 *Consult the datasheets on Enecsys’s website for most current information. All technical specification information is subject to change without prior notice.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 Duo micro inverter scope of delivery: • 1 Enecsys duo micro inverter unit. • Inverter serial number sticker (on the outside of the inverter packaging) ATTENTION: Retain the Serial Number Stickers The serial number stickers are used to correlate the position of the inverter and its module to its location in the installation.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 6.4 Mounting the duo micro inverter The duo micro inverter has several mounting points. • The installer must choose the most suitable method of mounting the micro inverter. • The body of the micro inverter must not be in contact with either the roof surface or the PV module. • There must be at least 10mm clearance between the body of the micro inverter, the roof surface and the rear of the PV module.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 Secure the inverter to the mounting structure. Mounting methods may vary. An M8 diameter bolt is recommended. The installer must supply bolts, washers and other fasteners. 6.5 Installing and connecting the AC bus cabling, single and duo WARNING: If connections are not made in the correct order, a voltage may be present at the exposed wires on the grid connect cable.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 • An AC bus extension cable can connect one distribution unit to another. • The grid connection cable connects an AC branch to the AC mains. • The grid connection cable connectors should be connected to the AC mains first, and to the AC branch distribution unit last.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 ATTENTION: Do not allow the cable to lie in contact with the roof surface. If necessary, route the cable neatly along the racking using cable clips. 6.6 Connecting the single or duo micro inverter WARNING: Whenever the PV module is exposed to light, it supplies a DC voltage. Follow all safety instructions and warnings provided by the module manufacturer’s documentation.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 ❸Connect the AC bus extension cable to the distribution unit. Repeat steps ❶ through ❸ until the desired number of branches is assembled. Do not connect the DC link cables yet. ❹ Fit the continuous ground wire only in countries where necessary. Fit and tighten the continuous ground wire using a Torx t20 driver. Allow enough ground wire to ground the PV module.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 ❺b Duo micro inverter: Connect both Y connectors to the appropriate micro inverter DC link cable connectors until they snap lock. Connect the DC link cables from the PV modules to the micro inverter Y connectors. Never disconnect the DC link cables when under load.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 6.6.2 Disconnecting a micro inverter CAUTION: micro inverters must be disconnected in the correct sequence, as shown below: otherwise they may be damaged. • Isolate the AC side of the micro inverter bus cabling from the mains grid using the isolation switch or circuit breaker, as applicable in the country of installation.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 7 Monitoring Setup and Installation Launch 7.0 Installer login • Installers who are new to Enecsys should contact Enecsys customer support to register and be given a user name and password. • To set up a new installation, the installer should go to: http://www.monitor.enecsys.net • Log in, and then click Go on the Installer line to log in as an installer. • The view defaults to the LIVE INSTALLATIONS tab.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 Step 3: Input the system information. • System information describes the PV system: Type, Number of Modules, number of inverters, Mounting system, and Roof Type are entered here. • “Total cost of system” and “Feed in Tariff” are used to calculate report values. Step 4: Add gateway serial number(s). 40 • At this point, you will be entering a serial number for each gateway used.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 Step 5: Begin layout by adding a section. • Before any sections are created, the screen will appear as below. • Select the ADD A NEW SECTION button to create a new PV system layout. Step 6: Enter section details. Q: Why would an installation consist of “sections”? A: Smaller installations are not as likely to need to be defined in sections.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 Step 7: Adjust section layout. 42 • Double-clicking on the section will allow the user to edit the individual panel details. If the installer wishes to bypass the automatic inverter serial numbers in the final setup, the inverter serial numbers can be added manually, panel by panel. • Adjust, re-size, or reposition the section. • Double-click section to edit individual PV panels. Use the layout tools to assist with layout design.
Enecsys Installation and Operation Manual – Version 1.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 • The SERIALS tab allows the user to manually load the inverter serial numbers, or to edit numbers that are already there. • Type the inverter serial in the Search box. Click the ADD TO LIST button to add it to the Available Serials column. Drag the added number from the column onto the module. Saving the Pending Installation • After the layout is done, click the SAVE button.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 numbers will automatically be reporting on the list of available serial numbers. • The installer will need to drag each inverter serial number to the appropriate module. Refer to the “PV module / micro inverter serial number form” that was filled with stickers during the installation for their positions in the array design.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 Step 4: Inform the customer • Click the NEW USER button for the system to automatically send the installation owner a Username and Password to access the monitoring account. The customer information the installer used for the owner details will be used to generate the email. See “Section 7.1 Adding a New Installation” for details. • Advise the installation owner that the email is coming.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 8 Troubleshooting Contact Enecsys support or the system installer for assistance if you cannot understand how to solve the problem. 8.1 Communication Problem No illuminated display presented when the Enecsys gateway is powered on. Solution Ensure the power supply is plugged in and powered on. Replace the Enecsys gateway. The Enecsys gateway does not connect to the internet. Check the Ethernet cable and router.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 9 Product return process If an Enecsys micro inverter is experiencing a problem in the field, the installer or distributor who purchased the product from Enecsys should contact Enecsys: • The most up-to-date listing of Enecsys contact information is available on our website: www.enecsys.com, “Contact us” tab. • Email inquiries: support@enecsys.com.
Enecsys Installation and Operation Manual – Version 1.6 –June 6 2012 10 PV module / micro inverter serial number form Print out this form: make copies if necessary for installations with multiple sections.
Enecsys Limited was founded in 2003 and develops, manufactures and markets innovative grid-connected micro inverters for solar photovoltaic systems in residential and commercial applications. The patented technology was originally developed at Cambridge University. Headquartered in Cambridge, UK, the company also ces in Bad Homburg, Germany and in Redwood Shores, California, USA.
