SMA STP 15000TL Service Manual

ServiceManual

SUNNYTRIPOWER15000TL/ 17000TL

STP15-17TL-10-SG-en-10 | Version 1.0

AMERICAN ENGLISH

Legal Provisions

SMA Solar Technology AG

Legal Provisions

The information contained in these documents is property of SMA Solar Technology AG. Any publication, whether in whole or in part, requires prior written approval by SMA Solar Technology AG. Internal reproduction used solely for the purpose of product evaluation or other proper use is allowed and does not require prior approval.

SMA Warranty

You can download the current warranty conditions from the Internet at www.SMA-Solar.com.

Trademarks

All trademarks are recognized, even if not explicitly identified as such. A lack of identification does not mean that a product or symbol is not trademarked.

The BLUETOOTH® word mark and logos are registered trademarks of BluetoothSIG,Inc. and any use of these marks by SMASolarTechnologyAG is under license.

Modbus® is a registered trademark of Schneider Electric and is licensed by the Modbus Organization, Inc.

QR Code is a registered trademark of DENSO WAVE INCORPORATED. Phillips® and Pozidriv® are registered trademarks of Phillips Screw Company. Torx® is a registered trademark of Acument Global Technologies, Inc.

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Service ManualSTP15-17TL-10-SG-en-102

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Table of Contents

1 Information on this Document ................................................. 4

1.1 Validity................................................................................................ 4

1.2 Target Group...................................................................................... 4

1.3 Symbols .............................................................................................. 4

1.4 Nomenclature..................................................................................... 5

2 Safety......................................................................................... 6

2.1 Safety Information.............................................................................. 6

2.2 Disconnecting the Inverter from Voltage Sources ............................ 7

3 Cleaning the Inverter................................................................ 9

4 Troubleshooting ........................................................................ 10

4.1 LED Signals......................................................................................... 10

4.2 Event Messages ................................................................................. 10

4.3 Error Messages .................................................................................. 11

5 Cleaning the Fans ..................................................................... 23

5.1 Cleaning the Fan at the Bottom......................................................... 23

5.2 Cleaning the Fan on the Left-Hand Side of the Enclosure ............... 24

6 Checking the Function of the Fans........................................... 27

7 Checking the PV System for Ground Faults............................ 28

8 Checking the Function of the Varistors.................................... 31

9 Replacing the Varistors ............................................................ 33

10 Checking the Function of the Surge Arresters ........................ 34

11 Replacing the Surge Arrester................................................... 36

12 Recommissioning the Inverter.................................................. 38

13 Decommissioning the Inverter ................................................. 40

14 Spare Parts ................................................................................ 42

15 Contact....................................................................................... 43

Service Manual 3STP15-17TL-10-SG-en-10

1 Information on this Document

SMA Solar Technology AG

1 Information on this Document

1.1 Validity

This document describes how to rectify certain errors and how to replace defective components. This document supplements the documents that are enclosed with each product and does not replace any locally applicable standards or directives. Read and observe all documents supplied with the product.

This document is valid for the following device types:

• STP 15000TL-10 (Sunny Tripower 15000TL)

• STP 17000TL-10 (Sunny Tripower 17000TL)

1.2 Target Group

The tasks described in this document must only be performed by qualified persons. Qualified persons must have the following skills:

• Knowledge of how an inverter works and is operated

• Training in how to deal with the dangers and risks associated with installing and using electrical devices and installations

• Training in the installation and commissioning of electrical devices and installations

• Knowledge of the applicable standards and directives

• Knowledge of and compliance with this document and all safety information

1.3 Symbols

Symbol Explanation

Indicates a hazardous situation which, if not avoided, will result in death or serious injury

Indicates a hazardous situation which, if not avoided, can result in death or serious injury

Indicates a hazardous situation which, if not avoided, can result in minor or moderate injury

Indicates a situation which, if not avoided, can result in property damage

Information that is important for a specific topic or goal, but is not safety-relevant

Indicates a requirement for meeting a specific goal

Desired result

A problem that might occur

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1 Information on this Document

1.4 Nomenclature

Complete designation Designation in this document

SunnyTripower Inverter, product ElectronicSolarSwitch ESS SMA BLUETOOTH Wireless Technology BLUETOOTH

Service Manual 5STP15-17TL-10-SG-en-10

2 Safety

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2 Safety

2.1 Safety Information

This section contains safety information that must be observed at all times when working on or with the product.

To prevent personal injury and property damage and to ensure long-term operation of the product, read this section carefully and observe all safety information at all times.

Danger to life due to high voltages of the PV array

When exposed to sunlight, the PV array generates dangerous DC voltage which is present in the DC conductors and the live components of the inverter. Touching the DC conductors or the live components can lead to lethal electric shocks. If you disconnect the DC connectors from the inverter under load, an electric arc may occur leading to electric shock and burns.

• Do not touch uninsulated cable ends.

• Do not touch the DC conductors.

• Do not touch any live components of the inverter.

• Have the inverter mounted, installed and commissioned only by qualified persons with the appropriate skills.

• If an error occurs, have it rectified by qualified persons only.

• Prior to performing any work on the inverter, disconnect it from all voltage sources as described in this document (see Section2.2 "Disconnecting the Inverter from Voltage Sources", page7).

Danger to life due to electric shock

Touching an ungrounded PV module or array frame can cause a fatal electric shock.

• Connect and ground the PV modules, array frame and electrically conductive surfaces so that there is continuous conduction. Observe the applicable local regulations.

Risk of burns due to hot enclosure parts

Some parts of the enclosure can get hot during operation.

• Do not touch any parts other than the lower enclosure lid of the inverter during operation.

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Damage to the seal of the enclosure lids in subfreezing conditions

If you open the upper and lower enclosure lids in subfreezing conditions, the seals on the enclosure lids can be damaged. This can lead to moisture entering the inverter.

• Do not open the inverter at ambient temperatures lower than -5°C.

• If a layer of ice has formed on the seal of the lid in subfreezing conditions, remove it prior to opening the enclosure lids of the inverter (e.g. by melting the ice with warm air). Observe the applicable safety regulations.

Damage to the display or the type label due to the use of cleaning agents

• If the inverter is dirty, clean the enclosure, the enclosure lid, the type label, the display and the LEDs with a damp cloth only.

2.2 Disconnecting the Inverter from Voltage Sources

Prior to performing any work on the inverter, always disconnect it from all voltage sources as described in this section. Always adhere to the prescribed sequence.

Destruction of the measuring device due to overvoltage

• Only use measuring devices with a DC input voltage range of 1,000 V or higher.

2 Safety

Procedure:

1. Disconnect the circuit breaker from all three line conductors and secure against reconnection.

2. If the multifunction relay is used, switch off any supply voltage to the load.

3. Test whether there is an acoustic signal. If an acoustic signals sounds and the display shows an error message that prohibits

disconnecting the ESS, wait until dark. The ESS can only be disconnected once it is dark. If no acoustic signal sounds and the display does not show an error message, remove the ESS.

4. Wait until the LEDs and the display have gone out.

5. Remove all six screws from the lower enclosure lid using an Allen key (AF3).

Service Manual 7STP15-17TL-10-SG-en-10

2 Safety

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6. Flip the lower enclosure lid up and remove it.

Risk of burns when touching the DC protective cover

The DC protective cover can get hot during operation.

• Do not touch the DC protective cover.

8. Use an appropriate measuring device to ensure that no voltage is present at the AC connecting terminal plate between L1 and N, L2 and N, and L3 and N. Insert the test probe into each round opening of the terminal.

9. Use an appropriate measuring device to ensure that no voltage is present at the AC connecting terminal plate between L1 and PE, L2 and PE, and L3 and PE. Insert the test probe into each round opening of the terminal.

10. If you are using the multifunction relay, ensure that no voltage is present between any of the terminals on the multifunction relay and PE on the AC connecting terminal plate.

11. Use a current clamp to ensure that no current is present in the DC cables.

12. Release and remove all DC connectors. To do this, insert a flat-blade screwdriver or an angled screwdriver (blade width: 3.5mm) into one of the side slots and pull the DC connectors straight out. Do not pull on the cable.

13.

Danger to life due to high voltages in the inverter

The capacitors in the inverter take 20minutes to discharge.

• Wait 20minutes before opening the upper enclosure lid.

• Do not open the DC protective cover.

14.

Damage to the inverter due to electrostatic discharge

Touching electronic components can cause damage to or destroy the inverter through electrostatic discharge.

• Ground yourself before touching any component.

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3 Cleaning the Inverter

Damage to the display or the type label due to the use of cleaning agents

• If the inverter is dirty, clean the enclosure, the enclosure lid, the type label, the display and the LEDs with a damp cloth only.

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4 Troubleshooting

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4 Troubleshooting

4.1 LED Signals

The LEDs indicate the operating state of the inverter.

LED Status Explanation

Green LED glowing Feed-in operation

If an event occurs during feed-in operation, an event message will be shown on the display (for event messages see the service manual at www.SMA-Solar.com).

flashing The conditions for feed-in operation are not yet met. As

soon as the conditions are met, the inverter will start feedin operation.

Red LED glowing Error

If an error occurs, the error message and the corresponding event number will be shown in the display. The error must be rectified by a qualified person (for troubleshooting, see the service manual at www.SMA-Solar.com).

Blue LED glowing BLUETOOTH communication is activated.

4.2 Event Messages

Display message Cause

Self-test The self-test is in progress. Set parameter The parameter changes are being adopted. Parameters set successfully The parameter changes were successfully adopted. Update file OK The update file found is valid. SD card is read The SD memory card is searched for update files and the update file

is checked.

No new update SD card The SD memory card contains an update file that has already been

used.

Update communication The inverter is performing an update of the communication compo-

nent. Update main CPU The inverter is updating the inverter component. Update RS485I module The inverter is updating the corresponding component. Update Speedwire The inverter is updating the corresponding component. Webconnect update The inverter is updating the corresponding component. Update Bluetooth The inverter is updating the corresponding component.

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Display message Cause

Upd. language table The inverter is updating the corresponding component. Update display The inverter is updating the corresponding component. Update String prot. The inverter is updating the corresponding component. Update completed The inverter has successfully completed the update. Grid param. unchanged The parameters are locked and you cannot change them. Inst. code valid The entered GridGuard code is valid. Protected parameters have

now been unlocked and you can adjust the parameters. The param-

eters will be automatically locked again after tenfeed-in hours.

4 Troubleshooting

4.3 Error Messages

Event number Display message, cause and corrective measures

101 to 103

Grid fault

The grid voltage or grid impedance at the connection point of the inverter is too high. The inverter has disconnected from the utility grid.

Corrective measures:

• Check whether the grid voltage at the connection point of the inverter is permanently in the permissible range.

If the grid voltage is outside the permissible range due to local grid conditions, contact the grid operator. The grid operator must agree with an adjustment of the voltage at the feed-in point or with a change of the monitored operating limits.

If the grid voltage is permanently within the permissible range and this message is still displayed, contact Service.

Service Manual 11STP15-17TL-10-SG-en-10

4 Troubleshooting

Event number Display message, cause and corrective measures

202 to 203

Grid fault

The utility grid has been disconnected, the AC cable is damaged or the grid voltage at the connection point of the inverter is too low. The inverter has disconnected from the utility grid.

Corrective measures:

• Make sure that the circuit breaker is switched on.

• Make sure that the AC cable is not damaged.

• Make sure that the AC cable is correctly connected.

• Check whether the grid voltage at the connection point of the inverter is permanently in the permissible range.

If the grid voltage is permanently within the permissible range and this message is still displayed, contact Service (see Section15, page43).

301

Grid fault

The ten-minute average value of the grid voltage is no longer within the permissible range. The grid voltage or grid impedance at the connection point is too high. The inverter disconnects from the utility grid to maintain power quality.

Corrective measures:

• Check whether the grid voltage at the connection point of the inverter is permanently in the permissible range.

If the grid voltage is permanently within the permissible range and this message is still displayed, contact Service (see Section15, page43).

401 to 404

Grid fault

The inverter is no longer in grid-parallel operation. The inverter has stopped feeding into the utility grid.

Corrective measures:

• Check the grid connection for significant short-term frequency fluctuations.

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Event number Display message, cause and corrective measures

501

Grid fault

The power frequency is not within the permissible range. The inverter has disconnected from the utility grid.

Corrective measures:

• If possible, check the power frequency and observe how often fluctuations occur.

If fluctuations occur frequently and this message is displayed often, contact the grid operator and request approval to change the operating parameters of the inverter.

If the grid operator gives his approval, discuss any changes to the operating parameters with Service (see Section15, page43).

601

Grid fault

The inverter has detected an excessively high proportion of direct current in the grid current.

Corrective measures:

• Check the grid connection for direct current.

• If this message is displayed frequently, contact the grid operator and check whether the monitoring threshold on the inverter can be raised.

701

Frq. not permitted > Check parameter

The power frequency is not within the permissible range. The inverter has disconnected from the utility grid.

Corrective measures:

• If possible, check the power frequency and observe how often fluctuations occur.

If fluctuations occur frequently and this message is displayed often, contact the grid operator and request approval to change the operating parameters of the inverter.

If the grid operator gives his approval, discuss any changes to the operating parameters with Service (see Section15, page43).

1302

Waiting for grid voltage > Grid failure > Check AC circuit breaker

The AC cable is not correctly connected or the country data set is not correctly configured.

Corrective measures:

• Ensure that the AC cable is correctly connected (see the operating manual of the inverter).

• Ensure that the country data set has been configured correctly.

• Check the fuse.

4 Troubleshooting

Service Manual 13STP15-17TL-10-SG-en-10

4 Troubleshooting

Event number Display message, cause and corrective measures

1501

Reconnection fault grid

The changed country data set or the value of a parameter you have set does not correspond to the local requirements. The inverter cannot connect to the utility grid.

Corrective measures:

• Ensure that the country data set has been configured correctly. Check the setting of the rotary switches A and B or select the operating parameter Set country standard and check the value.

3301 to 3303

Unstable operation

Corrective measures:

• Check whether the grid voltage at the connection point of the inverter is permanently in the permissible range.

If the grid voltage is permanently within the permissible range and this message is still displayed, contact Service (see Section15, page43).

3401 to 3402

DC overvoltage > Disconnect generator

Overvoltage at the DC input. This can destroy the inverter. This message is additionally highlighted by rapid flashing of the backlight.

Corrective measures:

• Immediately disconnect the inverter from all voltage sources (see Section2.2, page7).

• Check whether the DC voltage is below the maximum input voltage of the inverter. If the DC voltage is below the maximum input voltage of the inverter, reconnect the DC connectors to the inverter.

• If the DC voltage exceeds the maximum input voltage of the inverter, ensure that the PV array has been correctly rated or contact the installer of the PV array.

• If this message is repeated frequently, contact Service (see Section15, page43).

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