User manual CONTAX SWR 1800U V1.0

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Manual abstract: user guide CONTAX SWR 1800UV1.0

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[. . . ] Sunny Boy SWR 1800U Installation and Operator's Manual Issue 1. 0 Grid Tied String Inverter for Photovoltaic Systems SB1800U-11:NE0402 Sunny Boy 1800U Installation and Operator's Manual Alteration Review Document Number SB1800U -11:NE0402 Issue and Alteration Review 1) 1. 0 A Comments Author First issue Homburg 1 ) A: Changes due to faulty documents or improvement of the documentation B: Changes maintaining full or upward compatibility C: Changes limiting or excluding compatibility Name Approved Bremicker Date Signature SB2500U-11:NE -2- SMA Regelsysteme GmbH Sunny Boy 1800U Installation and Operator's Manual IMPORTANT SAFETY INSTRUCTIONS This manual contains important instructions that shall be followed during installation and maintenance of the Sunny Boy. To reduce the risk of electrical shock, and to ensure the safe installation and operation of the Sunny Boy, the following safety symbols have been placed throughout this technical description to indicate dangerous conditions and important safety instructions. WARNING: This indicates a fact or feature very important for the safety of the user and / or which can cause a serious hardware defect if not applied appropriately. Use extreme caution when performing this task. NOTE: This indicates a feature that is important either for optimal and comfortable usage or optimal operation of the system. [. . . ] 3. 1: Diagram of commissioning SB2500U-11:NE - 22 - SMA Regelsysteme GmbH Sunny Boy 1800U Installation and Operator's Manual If the input voltage is high enough the Sunny Boy should start to feed inverted PV-power fully automatically to the grid, once enough power is coming from the PV-modules. The design of the Sunny Boy makes sure that its internal consumption is as low as possible. The Sunny Boy requires a maximum 3 W internal consumption which it takes from the PV-panel. If you measure the voltage of the PV-modules you must keep in mind the inverter's internal consumption that will have an effect on your measurement with lower solar radiation. The open circuit voltage of the PV-panel will therefore not be displayed. The internal consumption is negligible for the voltage measurement with higher solar radiation. The operating state of the Sunny Boy will be indicated with three LEDs integrated into the lid. The meaning of the LEDs will be explained in chapter 4, "Operation and Failure Indication LEDs". SB2500U-11:NE - 23 - SMA Regelsysteme GmbH Sunny Boy 1800U Installation and Operator's Manual 4 Operation and Failure Indication LEDs The inverter normally operates automatically, without user interaction and without any maintenance. The inverter automatically turns itself off when a grid feeding is not possible (e. g. The Sunny Boy automatically starts its grid feeding the next day once the solar radiation is high enough. The inverter goes to standby mode if the radiation and the resulting electric input energy is too low and is therefore always ready for operation. Each time the Sunny Boy starts up it runs a number of self test and safety procedures which the user does not notice. The user can obtain the inverter's operating status from the 3 integrated LEDs on the lid (see Table 4. 1: Operation indication overview). The green LED "Operation" describes the current operation of the Sunny Boy, see chapter 4. 1 "Operation Indicator". A description of this situation and what has to be done in that case is given in chapter 4. 2. The yellow LED "Failure" indicates an internal or external failure that keeps the inverter from feeding the grid. The specific causes for this and how to avoid them are described in chapter 4. 3 "Failure Indication". The red and yellow LED combined indicate that the internal Ground Fault Detector and Interupter (GFDI) has detected a ground fault in the PV panel. A description of this situation and what has to be done in that case is given in chapter 4. 2. SB2500U-11:NE - 24 - SMA Regelsysteme GmbH Sunny Boy 1800U Installation and Operator's Manual Fig. 4. 1: Front view of Sunny Boy 1800U Description of the symbols used in the following section: LED off LED on once per second LED on three times per second LED on with short interruptions (75% on, 25% off) LED on Not important SB2500U-11:NE - 25 - SMA Regelsysteme GmbH Sunny Boy 1800U Installation and Operator's Manual LED-indicator green: red: yellow: green: red: yellow: Operating Condition standby (night) Description input voltage < 120 V initialization input voltage: 94 V. . . 147 V green: red: yellow: stop changing operating condition or manually initiated condition green: red: yellow: waiting, checking grid starting conditions are being checked green: red: yellow: feeding grid MPP or constant voltage mode normal operation green: red: yellow: derating mode Reduction of power fed to the grid due to increased temperature of the heat sink green: red: yellow: isolation failure ground fault of the PV-panels see chapter 4. 2 green: red: yellow: failure GFDI fuse is defective see chapter 4. 2 green: red: yellow: failure internal or external failure, exact description depending on blink code see chapter 4. 3 green: red: yellow: Consistent Failure A failure of the utility has occurred Table 4. 1: Operation indication overview SB2500U-11:NE - 26 - SMA Regelsysteme GmbH Sunny Boy 1800U Installation and Operator's Manual 4. 1 Operation Indicator Standby (night) all LEDs are off The Sunny Boy is in "Standby" mode. The input voltage is too low (VPV < 94 V) for supplying the Sunny Boy control system with enough power. Initialization all LEDs are on The Sunny Boy control system is initializing. The supply is sufficient for the system control and not quite sufficient for feeding to the grid. NOTE: In some seldom cases (bad weather, low solar radiation) the LEDs can go on all at once and off again. [. . . ] WARNING: The maximum open circuit voltage of the PV panel may not exceed the specified maximum input voltage of the Sunny Boy. The open circuit voltage of the PV panel depends on the temperature of its cells and on the respective solar radiation. The highest open circuit voltage of the PV panel occurs when the temperature of the cells is at its lowest point. Therefore it has to take into account the lowest possible ambient temperature of the PV panel when planning the PV plant. [. . . ]

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