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SMA America, LLC

Maintenance and cleaning

User Manual

SB_CL_US-BUS094410

25

5 Maintenance and cleaning

Check the correct operation of the inverter at regular intervals. Impurities such as dust or pollen can
cause heat accumulation that can lead to yield losses. Also check the inverters and the cables for
visible external damage. Have repairs carried out if necessary.

5.1 Checking heat dissipation

5.1.1 Cleaning the fans

If the fan guards are only covered with loose dust, they can be cleaned with a vacuum cleaner. If
vacuum cleaning does not produce a satisfactory result, contact your installer, who will dismantle the
fans for cleaning.

• The fan cleaning procedure is described in the respective installation guide and must be carried

out by qualified personnel.

5.2 Cleaning the display

If the display or the status LEDs are so soiled that they can no longer be read, they should be cleaned
with a damp cloth.

• Never use solvents, abrasives or corrosive materials for cleaning.

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Содержание SUNNY BOY US

Страница 1: ...SB_CL_US BUS094410 TBUS SBUS Version 1 0 US PV Inverter SUNNY BOY US User Manual ...

Страница 2: ......

Страница 3: ...mstances The exclusion of implied warranties may not apply in all cases under some statutes and thus the above exclusion may not apply Specifications are subject to change without notice Every attempt has been made to make this document complete accurate and up to date Readers are cautioned however that SMA America LLC reserves the right to make changes without notice and shall not be responsible ...

Страница 4: ... carefully read and follow all instructions cautions and warnings in this user manual Warnings in this document A warning describes a hazard to equipment or personnel It calls attention to a procedure or practice which if not correctly performed or adhered to could result in damage to or destruction of part or all of the SMA equipment and or other equipment connected to the SMA equipment or person...

Страница 5: ...azards The product has large electrical potential differences between its conductors Arc flashes can occur through air when high voltage current flows Do not work on the product during operation Beware of hot surface The product can become hot during operation Do not touch the product during operation Observe the operating instructions Read the product s documentation before working on it Follow a...

Страница 6: ...cept for the fans on the bottom of the enclosure and the filters behind the fans as well as the handle covers on the sides of the unit For all repair and maintenance always return the unit to an authorized SMA Service Center Before installing or using the Sunny Boy read all of the instructions cautions and warnings on the Sunny Boy in this User Manual Before connecting the Sunny Boy to the electri...

Страница 7: ... 1 All LEDs are off 14 3 1 2 All LEDs are on 14 3 1 3 The green LED is blinking rapidly 14 3 1 4 The green LED is blinking slowly 15 3 1 5 The green LED is continuously on 15 3 1 6 The green LED goes out briefly 15 3 2 LED fault indicators 16 3 2 1 Red and Yellow LEDs are on 16 3 2 2 The Red LED is continously on 16 3 2 3 The yellow LED blinks twice 17 3 2 4 The yellow LED blinks 4 times 18 3 2 5 ...

Страница 8: ...sages 22 4 4 1 Disturbance 23 4 4 2 Warning 23 4 4 3 Error 23 4 4 4 Rapid Blinking of background illumination 24 5 Maintenance and cleaning 25 5 1 Checking heat dissipation 25 5 1 1 Cleaning the fans 25 5 2 Cleaning the display 25 6 Measurement channels and messages 26 6 1 Measuring channels 26 6 2 Status Messages 27 6 3 Error messages 29 7 Glossary 35 8 Contact 37 ...

Страница 9: ...Qualified personnel have received training and have demonstrated skills and knowledge in the construction and operation of this device Qualified personnel are trained to deal with the dangers and hazards involved in installing electric devices The operator has been adequately supervised by qualified personnel to ensure a save use of the Sunny Boy 1 3 Storage of the manuals Keep all Sunny Boy manua...

Страница 10: ...er than those described here Alternative uses modifications to the inverter or the installation of components not expressly recommended or sold by the manufacturer void the warranty claims and operating permission If you have questions regarding the proper usage of the inverters contact the SMA Serviceline Principle of the string inverter The string inverter is used to connect a number of series c...

Страница 11: ... Electrical installation Repairs Modifications Even when no external voltage is applied high voltages can still be present in the device These high voltages can result in death or serious injury WARNING The Sunny Boy becomes hot during operation Risk of burn Do not touch the enclosure during operation Only touch the lid during operation NOTICE Overvoltages in the inverter Destruction of the invert...

Страница 12: ... the Sunny Boy You can identify the Sunny Boy by the type label It is on the right side of the enclosure The type label shows The serial number Serial No The type of product Type Model Device specific characteristics Position Description A Type label B General warning label ...

Страница 13: ... possible LED signals and blink codes is given in the following section LED Meaning Green The green LED indicates normal operation of the inverter Red The red LED indicates an earth fault Yellow The yellow LED indicates that there is a fault of some kind either inside the inverter or somewhere in the PV system The inverter will not operate until the fault has been corrected The different error cod...

Страница 14: ...n at once and then go off again This indicates that the inverter is trying to initialize but the power available from the array is not sufficient for normal operation This is not a malfunction If no LED or only the green LED is on or blinking the inverter is operating normally If all 3 LEDs are lit up simultaneously this is also an indication of normal operation initialization All other signals ar...

Страница 15: ... Voltage mode MPP Mode The Sunny Boy adjusts the voltage and current from the PV array to obtain the greatest PV output power Constant Voltage Mode The voltage from the PV array has been set to a fixed value This value is set by using the Sunny Boy Control or the Sunny Data software the parameter name is V Const This mode is typically used for fuel cell or micro hydro applications 3 1 6 The green ...

Страница 16: ...o the installation guide for information on solving PV array ground faults the inverter will not restart automatically 3 2 2 The Red LED is continously on Ground fault The red LED on the Sunny Boy is permanently on With this blink code it is irrelevant whether the green or yellow LEDs are on or blinking When the red LED lights up continuously the inverter has detected a ground fault Contact your i...

Страница 17: ...ny of the following conditions Low Grid Voltage Vac Min High Grid Voltage Vac Max Low Grid Frequency fac Min High Grid Frequency fac Max Rapid change in grid frequency or voltage Check the condition of the grid at the AC terminal blocks within the Sunny Boy Also inspect the AC disconnect between the Sunny Boy and the grid WARNING During operation high voltages are present in the Sunny Boy Death or...

Страница 18: ... is on for 5 sec remains off for 3 sec and then blinks 5 times The code is repeated 3 times If the condition remains the code will continue to be sent The inverter has encountered an internal fault that prohibits normal operation and will most likely require servicing Contact SMA for assistance NOTICE Destruction of the inverter caused by high DC input voltage Contact your installer who will immed...

Страница 19: ... current is dependent on the capacity of the PV generator relative to ground and also depends on the type of modules and manner of installation as well as the weather conditions Therefore it is quite normal for this value to vary over time However if the inverter frequently displays this fault please notify the installer who installed your PV system and clarify the reasons for the high level of di...

Страница 20: ...l current and immediately stopped feeding into the grid The integrated all pole sensitive residual current monitoring unit monitors the differential current relative to ground from the inverter supply connection right through to the PV generator This additional personal protection system reacts to a drastic change in differential current of IDN 30 mA and disconnects the Sunny Boy from the grid wit...

Страница 21: ...lay in the lid 4 1 Activating the backlight The backlight is switched on by knocking on the lid Additional knocks switch the display on to the next message The backlight shuts off automatically after 2 min Display Messages Detailed explanations of the individual error and fault messages can be found in section 6 Measurement channels and messages page 26 ...

Страница 22: ... voltage configuration and actual line to neutral voltage measurements Message 3 Current feed in power and the voltage of the PV generator Message 4 Accumulated energy yield of the device since installation and the total operating hours 4 4 Fault messages In case of a fault condition the LCD switches to Fault mode and the backlight is activated The upper display line indicates one of the three fol...

Страница 23: ...articular parameter present After another 5 sec the normal operating data appear If the fault is still present the fault display cycle starts over again An overview of the status and error messages can be found in section 6 Measurement channels and messages page 26 of this documentation 4 4 2 Warning If a fault warning occurs the display immediately switches to Warning and the background illuminat...

Страница 24: ...ut voltage is present at the Sunny Boy this is indicated by rapid blinking of the background illumination and the message shown on the right NOTICE DC input voltage too high Destruction of the inverter Contact your installer who will immediately disconnect the PV generator from the inverter and check the DC voltage as described in the inverter installation guide ...

Страница 25: ...dissipation 5 1 1 Cleaning the fans If the fan guards are only covered with loose dust they can be cleaned with a vacuum cleaner If vacuum cleaning does not produce a satisfactory result contact your installer who will dismantle the fans for cleaning The fan cleaning procedure is described in the respective installation guide and must be carried out by qualified personnel 5 2 Cleaning the display ...

Страница 26: ...nt disturbance error Event Cnt Counter of events which have occurred Fac Grid frequency Grid Type Type of grid the inverter is connected to h On h on indicates how long sufficient DC voltage has been applied to the Sunny Boy and the Sunny Boy has been active including the time it was not able to feed to the utility with respect to low DC voltage or operation in stop mode h total Total number of gr...

Страница 27: ...ult and disconnected from the grid Consequently the other two Sunny Boy inverters also disconnect from the grid to avoid an unbalanced load and send the message Balanced Case 2 The operating parameter PowerBalancer is set to PowerGuard One of the 3 Sunny Boys in this system has detected a device or grid fault and disconnected from the grid The two remaining Sunny Boys reduce their output over a 10...

Страница 28: ...This message occurs during the startup phase before the Sunny Boy has connected to the grid The message usually appears in the morning and evening when there is little solar irradiation Grid monitoring is also carried out after a fault has occurred MPP The Sunny Boy is operating in MPP mode It extracts the highest possible power output from the PV generator MPP is the standard display message when...

Страница 29: ...he internal hardware monitoring system has detected a fault in the power electronics Corrective measures Contact your installer or the SMA Serviceline Derating The inverter reduces the output power due to high internal temperature Corrective measures See Section 3 1 6 The green LED goes out briefly page 15 for more information on this warning dI Bfr dI Srr The inverter has detected a drastic chang...

Страница 30: ...or message is for information purposes only and has no effect on the performance of the inverter Fac Bfr Fac Srr The grid frequency is no longer within the permissible range Bfr or Srr is an internal message with no relevance for the user The Sunny Boy assumes that the public grid is down and disconnects from the grid in order to avoid islanding Corrective measures Contact your installer to deal w...

Страница 31: ... measures Contact your installer or SMA if this problem recurs PowerBalancer The Sunny Boy is part of a three phase system with two further Sunny Boys This is equipped with the SMA Power Balancer for preventing unbalanced loads The operating parameter PowerBalancer is set to PhaseGuard or FaultGuard Corrective measures For more detailed descriptions of the operation modes PhaseGuard and FaultGuard...

Страница 32: ...mation is to be found in the inverter installation guide Riso Sense The insulation measurement has failed Corrective measures Contact your installer or the SMA Serviceline if this problem recurs ROM The inverter firmware is faulty Corrective measures Contact your installer or SMA if this problem recurs SD DI Conv The inverter has detected an insulation fault on the DC side Corrective measures Cont...

Страница 33: ...ed operational limits operating parameters Vac Min and Vac Max If the grid frequency is within the tolerable range yet Vac Bfr or Vac Srr faults are still being displayed contact SMA VacL1 Bfr VacL1 Srr The grid voltage on line 1 is no longer within the permissible range Bfr or Srr is an internal message that has no meaning for the user This can be caused by any of the following Grid disconnected ...

Страница 34: ...he feed in point or whether they would agree to modifications in the monitored operational limits operating parameters Vac Min and Vac Max If the grid frequency is within the tolerable range yet Vac Bfr or Vac Srr faults are still being displayed contact SMA VdclinkMax The internal hardware monitor has detected an overvoltage condition in the intermediate circuit of the inverter Corrective measure...

Страница 35: ...to prevent the formation of an unwanted stand alone grid SMA Grid Guard monitors the grid impedance and disconnects the inverter from the grid in the event of a sudden impedance variation Inverter A device for converting the direct current DC from the PV generator into alternating current AC which is used by most normal household devices and especially for feeding energy into an existing supply gr...

Страница 36: ...nic component which generates electrical energy when irradiated with sunlight Since the voltage produced by a single solar cell is very small approx 0 5 V several solar cells are combined to form a PV module Solar energy Sun energy i e energy from sunlight solar irradiation PV power plant Describes the totality of components required for the exploitation and utilization of solar energy In grid con...

Страница 37: ...the necessary assistance Inverter type Type and number of modules connected Communication method Serial number of the Sunny Boy Failure or warning number of the Sunny Boy Display of the Sunny Boy SMA Solar Technology America LLC 4031 Alvis Court Rocklin CA 95677 Tel 1 916 625 0870 Tel 1 877 MY SMA TECH Tel 1 877 697 6283 Toll free available for USA Canada and Puerto Rico Fax 1 916 625 0871 Service...

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Страница 40: ...4 NFSJDB XXX 4 NFSJDB DPN ...

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