SMA NR-PL-BFS5-01 Operating and safety instructions

SUNNY TRIPOWER
STP50-40-BFS-RM-xx-10 | 121564-00.01 | Version 1.0
Spare-part sets "BFS Assembly" for
SUNNY TRIPOWER CORE1 (STP 50-40) /
CORE1- US (STP 50-US-40 / STP 33-US-41 /
STP 50- US-41 / STP 62-US-41) / CORE1-JP
(STP 50-JP-40)
NR-PL-BFS5-01 / NR-PL-BFS5-US-01 / NR-PL-BFS33-US41-1 / NR-PL-BFS50-US41-1 /
NR-PL-BFS62-US41-1 / NR-PL-BFS5-JP-01

STP50-40-BFS-RM-xx-102
ENGLISH Replacement Manual................................................................3
DEUTSCH Austauschanleitung.................................................................23
ČEŠTINA Návod kvýměně ....................................................................45
ΕΛΛΗΝΙΚΑ Οδηγίες αντικατάστασης........................................................67
ESPAÑOL Instrucciones para la sustitución............................................89
FRANÇAIS Instructions de remplacement............................................. 111
ITALIANO Istruzioni per la sostituzione ............................................... 133
NEDERLANDS Vervangingshandleiding..................................................... 155
PORTUGUÊS Manual de substituição ....................................................... 177
ROMÂNĂ Instrucțiuni de schimb .......................................................... 199
TÜRKÇE Değiştirme kılavuzu ............................................................. 221
日本語 交換説明書........................................................................... 243

Legal Provisions
SMA Solar Technology AG
Replacement Manual STP50-40-BFS-RM-xx-10 3
Legal Provisions
The information contained in these documents is the property of SMA Solar Technology AG. No
part of this document may be reproduced, stored in a retrieval system, or transmitted, in any form or
by any means, be it electronic, mechanical, photographic, magnetic or otherwise, without the prior
written permission of 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 Solar Technology AG makes no representations or warranties, express or implied, with
respect to this documentation or any of the equipment and/or software it may describe, including
(with no limitation) any implied warranties of utility, merchantability, or fitness for any particular
purpose. All such representations or warranties are expressly disclaimed. Neither SMA Solar
Technology AG nor its distributors or dealers shall be liable for any indirect, incidental, or
consequential damages under any circumstances.
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 product
improvements and field usage experience may cause SMA Solar Technology AG to make changes
to these specifications without advance notice or per contract provisions. SMA Solar Technology
AG shall not be responsible for any damages, including indirect, incidental or consequential
damages, caused by reliance on the material presented, including, but not limited to, omissions,
typographical errors, arithmetical errors or listing errors in the content material.
Trademarks
All trademarks are recognized, even if not explicitly identified as such. Missing designations do not
mean that a product or brand is not a registered trademark.
SMA Solar Technology AG
Sonnenallee 1
34266 Niestetal
Germany
Tel. [phone]
Fax [phone]
www.SMA.de
Email: [email protected]
As of: 7/28/2020
Copyright © 2020 SMA Solar Technology AG. All rights reserved.
ENGLISH

1 Information on this Document SMA Solar Technology AG
Replacement ManualSTP50-40-BFS-RM-xx-104
1 Information on this Document
1.1 Validity
This document is valid for:
• NR-PL-BFS5-01 (BFS Assembly for STP 50-40)
• NR-PL-BFS5-US-01 (BFS Assembly for STP 50-US-40)
• NR-PL-BFS33-US41-1 (BFS Assembly for STP 33-US-41)
• NR-PL-BFS50-US41-1 (BFS Assembly for STP 50-US-41)
• NR-PL-BFS62-US41-1 (BFS Assembly for STP 62-US-41)
• NR-PL-BFS5-JP-01 (BFS Assembly for STP 50-JP-40)
1.2 Target Group
The tasks described in this document must only be performed by qualified persons. Qualified
persons must have the following skills:
• Within the SMA factory warranty, participation in an SMA training course is mandatory for
carrying out the activities described in this document. The type of training and the media used
may vary from country to country. The type and method of training can therefore vary from
country to country, but must have been completed before the service is provided.
• Outside the SMA factory warranty, SMA Solar Technology AG recommends participation in
an SMA training course to perform the activities described in this document. This ensures the
quality requirements for proper replacement of assemblies. The type of training and the media
used may vary from country to country.
• Knowledge of how to safely disconnect SMA inverters
• Knowledge of how an inverter works and is operated
• Training in the installation and commissioning of electrical devices and installations
• Knowledge of all applicable laws, standards and directives
• Knowledge of and compliance with this document and all safety information
1.3 Content and Structure of this Document
This document describes how to replace components.
Illustrations in this document are reduced to the essential information and may deviate from the real
product.
1.4 Levels of Warning Messages
The following levels of warning messages may occur when handling the product.
DANGER
Indicates a hazardous situation which, if not avoided, will result in death or serious injury.
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1 Information on this Document
SMA Solar Technology AG
Replacement Manual STP50-40-BFS-RM-xx-10 5
WARNING
Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
NOTICE
Indicates a situation which, if not avoided, can result in property damage.
1.5 Symbols in the Document
Symbol Explanation
Information that is important for a specific topic or goal, but is not safety-rele-
vant
☐
Indicates a requirement for meeting a specific goal
☑
Desired result
✖
A problem that might occur
Example
Sections describing activities to be performed by qualified persons only
1.6 Typographical Elements in the Document
Typography Use Example
bold • Messages
• Terminals
• Elements on a user interface
• Elements to be selected
• Elements to be entered
• Connect the insulated
conductors to the terminals
X703:1 to X703:6.
• Enter 10 in the field
Minutes.
>• Connects several elements to be
selected
• Select Settings > Date.
[Button]
[Key]
• Button or key to be selected or
pressed
• Select [Enter].
# • Placeholder for variable
components (e.g., parameter
names)
• Parameter WCtlHz.Hz#
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1 Information on this Document SMA Solar Technology AG
Replacement ManualSTP50-40-BFS-RM-xx-106
1.7 Designations in the Document
Complete designation Designation in this document
Operation control assembly (BFS) OCS assembly, OCS, assembly
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2 Safety
SMA Solar Technology AG
Replacement Manual STP50-40-BFS-RM-xx-10 7
2 Safety
2.1 Intended Use
This spare-part set enables the replacement of operation control system assemblies (OCS) in SMA
inverters.
The product must only be installed in the following SMA inverters:
Spare parts set Inverters
NR-PL-BFS5-01 STP 50-40
NR-PL-BFS5-US-01 STP 50-US-40
NR-PL-BFS33-US41-1 STP33-US-41
NR-PL-BFS33-US41-1 STP50-US-41
NR-PL-BFS33-US41-1 STP62-US-41
NR-PL-BFS5-JP-01 STP 50-JP-40
Use SMA products only in accordance with the information provided in the enclosed
documentation and with the locally applicable laws, regulations, standards and directives. Any
other application may cause personal injury or property damage.
Alterations to the SMA products, e.g., changes or modifications, are only permitted with the express
written permission of SMA Solar Technology AG. Unauthorized alterations will void guarantee and
warranty claims and in most cases terminate the operating license. SMA Solar Technology AG
shall not be held liable for any damage caused by such changes.
Any use of the product other than that described in the Intended Use section does not qualify as the
intended use.
The enclosed documentation is an integral part of this product. Keep the documentation in a
convenient, dry place for future reference and observe all instructions contained therein.
This document does not replace and is not intended to replace any local, state, provincial, federal
or national laws, regulations or codes applicable to the installation, electrical safety and use of the
product. SMA Solar Technology AG assumes no responsibility for the compliance or non-
compliance with such laws or codes in connection with the installation of the product.
If the replacement and all activities stated in this document are carried out by persons who are not
qualified within the meaning of this documentation, this will void the guarantee and warranty claims
and in most cases terminate the operating permit. SMA Solar Technology AG shall not be held
liable for any damage caused directly or indirectly due to such changes by unauthorized persons.
2.2 IMPORTANT SAFETY INSTRUCTIONS
Keep the manual for future reference.
This section contains safety information that must be observed at all times when working.
The product has been designed and tested in accordance with international safety requirements. As
with all electrical or electronical devices, there are residual risks despite careful construction. 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.
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2 Safety SMA Solar Technology AG
Replacement ManualSTP50-40-BFS-RM-xx-108
DANGER
Danger to life due to electric shock when live components or cables of the
inverter are touched
High voltages are present in the conductive components or cables of the inverter. Touching live
parts and cables of the inverter results in death or lethal injuries due to electric shock.
• Disconnect the inverter from voltage sources and make sure it cannot be reconnected
before working on the device.
• After disconnection, wait 5 minutes until the capacitors have discharged.
• Wear suitable personal protective equipment for all work on the product.
• Do not touch non-insulated parts or cables.
DANGER
Danger to life due to electric shock when live components or DC cables are
touched
When exposed to light, the PV modules generate high DC voltage which is present in the DC
cables. Touching live DC cables results in death or lethal injuries due to electric shock.
• Do not touch non-insulated parts or cables.
• Disconnect the inverter from voltage sources and make sure it cannot be reconnected
before working on the device.
• Do not disconnect the DC connectors under load.
• Wear suitable personal protective equipment for all work on the product.
DANGER
Danger to life due to electric shock when touching live system components in
case of a ground fault
If a ground fault occurs, parts of the system may still be live. Touching live parts and cables
results in death or lethal injuries due to electric shock.
• Disconnect the inverter from voltage sources and make sure it cannot be reconnected
before working on the device.
• Touch the cables of the PV array on the insulation only.
• Do not touch any parts of the substructure or frame of the PV array.
• Do not connect PV strings with ground faults to the inverter.
• Once disconnected from voltage sources, wait five minutes before touching any parts of the
PV system or the inverter.
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2 Safety
SMA Solar Technology AG
Replacement Manual STP50-40-BFS-RM-xx-10 9
WARNING
Danger to life due to fire or explosion
In rare cases, an explosive gas mixture can be generated inside the inverter under fault
conditions. In this state, switching operations can cause a fire inside the inverter or explosion.
Death or lethal injuries due to hot or flying debris can result.
• In the event of a fault, do not perform any direct actions on the inverter.
• Ensure that unauthorized persons have no access to the inverter.
• Do not operate the AC or DC load-break switch on the inverter.
• Disconnect the PV array from the inverter via an external disconnection device. If there is no
disconnecting device present, wait until no more DC power is applied to the inverter.
• Disconnect the AC circuit breaker, or keep it disconnected in case it has already tripped,
and secure it against reconnection.
• Only perform work on the inverter (e.g., troubleshooting, repair work) when wearing
personal protective equipment for handling of hazardous substances (e.g., safety gloves,
eye and face protection, respiratory protection).
WARNING
Risk of injury due to toxic substances, gases and dusts.
In rare cases, damages to electronic components can result in the formation of toxic substances,
gases or dusts inside the inverter. Touching toxic substances and inhaling toxic gases and dusts
can cause skin irritation, burns or poisoning, trouble breathing and nausea.
• Only perform work on the inverter (e.g., troubleshooting, repair work) when wearing
personal protective equipment for handling of hazardous substances (e.g., safety gloves,
eye and face protection, respiratory protection).
• Ensure that unauthorized persons have no access to the inverter.
WARNING
Danger to life due to electric shock from destruction of the measuring device
due to overvoltage
Overvoltage can damage a measuring device and result in voltage being present in the
enclosure of the measuring device. Touching the live enclosure of the measuring device results in
death or lethal injuries due to electric shock.
• Only use measuring devices with a DC input voltage range of 1000V or higher.
CAUTION
Risk of burns due to hot enclosure parts
The enclosure and the enclosure lid may get hot during operation. The DC load-break switch can
not become hot.
• Do not touch hot surfaces.
• Wait until the inverter has cooled down before touching the enclosure or enclosure lid.
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2 Safety SMA Solar Technology AG
Replacement ManualSTP50-40-BFS-RM-xx-1010
NOTICE
Damage to the enclosure seal in subfreezing conditions
If you open the inverter when temperatures are below freezing, the enclosure seals can be
damaged. This can lead to moisture entering the inverter.
• Only open the inverter if the ambient temperature is not below -5°C.
• If a layer of ice has formed on the enclosure seal when temperatures are below freezing,
remove it prior to opening the inverter (e.g. by melting the ice with warm air).
NOTICE
Damage to the inverter due to sand, dust and moisture
Sand, dust and moisture penetration can damage the inverter, thus impairing its functionality.
• Only open the inverter if the humidity is within the thresholds and the environment is free of
sand and dust.
• Do not open the inverter during a dust storm or precipitation.
• Close the inverter in case of interruption of work or after finishing work.
NOTICE
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.
Grounding conductor test prior to recommissioning
Prior to recommissioning SMA inverters after the installation of SMA components or power
assemblies which cannot be replaced intuitively, ensure that the grounding conductor in the
inverter is correctly connected. The function of the grounding conductor must be ensured and
all locally applicable laws, standards and directives must be observed.
Observe superordinate standards
The repair work on devices and the consideration and application of other standards which
correspond to a superordinate standard is the responsibility of the qualified person performing
the work. Unauthorized alterations will void guarantee and warranty claims and in most cases
terminate the operating license. SMA Solar Technology AG shall not be held liable for any
damage caused by such changes.
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3 Scope of Delivery
SMA Solar Technology AG
Replacement Manual STP50-40-BFS-RM-xx-10 11
3 Scope of Delivery
Check the scope of delivery for completeness and any externally visible damage. Contact the
Service if the delivery is incomplete or damaged.
Scope of delivery for SunnyTripowerCORE1: NR-PL-BFS5-01
Scope of delivery for SunnyTripower STP50-US-40: NR-PL-BFS5-US-01
Scope of delivery for SunnyTripower STP33-US-41: NR-PL-BFS33-US41-1
Scope of delivery for SunnyTripower STP50-US-41: NR-PL-BFS50-US41-1
Scope of delivery for SunnyTripower STP62-US-41: NR-PL-BFS62-US41-1
Scope of delivery for SunnyTripowerCORE1-JP: NR-PL-BFS5-JP-01
Designation Quantity
BFS Assembly 1
Bolt M4 x 15 8
Documentation 1
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4 Disconnecting the Inverter from Voltage Sources SMA Solar Technology AG
Replacement ManualSTP50-40-BFS-RM-xx-1012
4 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.
WARNING
Danger to life due to electric shock from destruction of the measuring device
due to overvoltage
Overvoltage can damage a measuring device and result in voltage being present in the
enclosure of the measuring device. Touching the live enclosure of the measuring device results in
death or lethal injuries due to electric shock.
• Only use measuring devices with a DC input voltage range of 1000V or higher.
Firmware update prior to disconnecting the inverter
To ensure trouble-free commissioning of the assembly, update the inverter firmware prior to
disconnecting the inverter.
• Prior to disconnecting the device from all voltage sources, check whether the firmware of
the inverter is up-to-date.
• If necessary, update the firmware.
Procedure:
1. Disconnect the AC circuit breaker and secure it against reconnection.
2. For STP 50-US-40 / STP 33-US-41 / STP 50-US-41 / STP 62-US-41: Set the AC load-break
switch of the inverter to position O.
3. Set the DC load-break switch of the inverter to position O.
4. If the multifunction relay is used, switch off any supply voltage to the load.
5. Wait until the LEDs have gone out.
6. Use a current clamp to ensure that no current is present in the DC cables.
7. Note the position of the DC connector.
8. DANGER
Danger to life due to electric shock when touching exposed DC
conductors or DC plug contacts if the DC connectors are damaged or
loose
The DC connectors can break or become damaged, become free of the DC cables, or no
longer be connected correctly if the DC connectors are released and disconnected
incorrectly. This can result in the DC conductors or DC plug contacts being exposed.
Touching live DC conductors or DC plug connectors will result in death or serious injury due
to electric shock.
• Wear insulated gloves and use insulated tools when working on the DC connectors.
• Ensure that the DC connectors are in perfect condition and that none of the DC
conductors or DC plug contacts are exposed.
• Carefully release and remove the DC connectors as described in the following.
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4 Disconnecting the Inverter from Voltage Sources
SMA Solar Technology AG
Replacement Manual STP50-40-BFS-RM-xx-10 13
9. For STP 50-40 / STP 50-JP-40 (use of Sunclix DC connectors): Release and remove the DC
connectors. To do so, 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 out. When doing so, do not
lever the DC connectors out, but insert the tool into one of the side slots only to release the
locking mechanism, and do not pull on the cable.
10. For STP 50-US-40 / STP 33-US-41 / STP 50-US-41 / STP 62-US-41 (use of Amphenol DC
connectors): Unlock the DC connectors using the corresponding unlocking tool and remove
(refer to the manufacturer manual for further information).
11. Ensure that the DC connectors on the product and those that are equipped with DC
conductors are in perfect condition and that none of the DC conductors or DC plug contacts
are exposed.
12. Ensure that no voltage is present at the DC inputs on
the inverter using a suitable measuring device.
A
B
C
<30V
13. Unscrew (TX25) all 10 screws of the enclosure lid of
the AC-ConnectionUnit and remove the enclosure
lid carefully towards the front.
10x
14. Set the screws and the enclosure lid aside and store safely.
15. Ensure there is no voltage on the AC terminal block between L1 and N, L2 and N, and L3 and
N using a suitable measuring device. To do so, insert the test probe (maximum diameter:
2.5mm (0.078in)) into the measuring points of the respective terminal blocks.
16. Ensure that there is no voltage on the AC terminal block between L1 and grounding
conductor, L2 and grounding conductor, and L3 and grounding conductor using a suitable
measuring device. To do so, insert the test probe (maximum diameter: 2.5mm (0.078in)) into
the measuring points of the respective terminal blocks.
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5 Removing the BFS Assembly SMA Solar Technology AG
Replacement ManualSTP50-40-BFS-RM-xx-1014
5 Removing the BFS Assembly
The communication assembly and the BFS assembly must not be replaced in
one step.
• If both assemblies have to be replaced, recommission the inverter after replacing the first
assembly. Only then may the second assembly be replaced.
DC-
Connection Unit
COM
LED
A
BFS
Figure 1 : Position of the communication assembly
Position Designation
A AC switch, only included in STP50-US-40, STP-33-US-41, STP-50-US-41 and
STP-62-US-41
Procedure:
1. Disconnect the inverter from all voltage sources (see Section4, page12).
2. Wait 5 minutes. This will ensure that the capacitors are discharged.
3. Release (TX25) all 10 screws of the enclosure lid of
the DC-ConnectionUnit and remove the enclosure
lid carefully towards the front.
10x
4. Discharge the DCConnectionUnit at the contact points using a voltage detector without
intrinsic voltage source: Ensure that the residual voltage is less than 5V.
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5 Removing the BFS Assembly
SMA Solar Technology AG
Replacement Manual STP50-40-BFS-RM-xx-10 15
• On the right-hand side of the DC switch, each
pair of contacts DC+ against each contact DC-
(red, blue and white conductor against 1 black
conductor; gray, green and lilac conductor
against 1 blue conductor)
• On the right-hand side of the DC switch, each
contact DC+ and DC- against the grounding
conductor (red, blue, white, black, gray, green,
lilac and blue conductor against grounding
conductor)
5. Ground yourself prior to replacing the assembly to prevent ESD damage.
6. Remove the cable tie from the ferrite of the ribbon cable X1.
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5 Removing the BFS Assembly SMA Solar Technology AG
Replacement ManualSTP50-40-BFS-RM-xx-1016
7. Remove all plugs from the used sockets of the communication assembly.
8. Remove the ferrite from the ribbon cable X1. To
remove the ferrite, insert a small flat-blade
screwdriver into the 2 central holes on the ferrite
and slowly open the ferrite.
9. Push the ribbon cable X1 from the COM assembly through the opening in the mounting plate
with COM assembly. This will prevent the ribbon cable from being torn off when removing the
mounting plate.
10. Remove the 4 mounting plate connecting screws
(TX20).
11. Remove the mounting plate incl. COM assembly from the inverter. To do so, use an angled
tool on the upper edge of the mounting plate to lever the mounting plate out of the fixing.
12. Remove all plugs from the used jacks of the BFS assembly.
13. Remove the 4 connecting screws of the BFS
assembly (TX20) and dispose of them properly.
14. Remove the BFS assembly from the inverter.
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6 Installing the BFS assembly
SMA Solar Technology AG
Replacement Manual STP50-40-BFS-RM-xx-10 17
6 Installing the BFS assembly
There are sections on this assembly with a safety extra-low voltage circuit (SELV circuit). To ensure
the safety of the circuits, an optical inspection must be carried out before installation.
Procedure:
1. Check the marked area and the area around both
pulse transformers for visible dirt before mounting
the assembly. If dust or other deposits cover the
assembly, it must not be used. Contact the Service
department (see Section9, page21).
2. Insert the BFS assembly in the inverter and screw into place using 4 screws from the scope of
delivery (TX20, torque: 3.5Nm ± 0.5Nm (30.98in-lb ± 4.43in-lb)).
3. Insert all plugs into the respective jacks of the BFS assembly.
4. Push the ribbon cable X1 through the respective opening in the COM assembly mounting
plate. This will prevent the cable being pinched during mounting.
5. Insert the mounting plate of the COM assembly into the inverter. Put the mounting plate onto
the inverter enclosure spacers. Ensure that the spacers match the respective holes in the
mounting plate and that the cables are not trapped beneath the mounting plate.
6. Tighten the 4 mounting plate connecting screws (TX20, torque: 3.5Nm ± 0.5Nm (30.98in-lb
± 4.43in-lb)).
7. Insert all plugs into the respective jacks of the mounting plate of the COM assembly.
8. Set the ferrite around the ribbon cable X1. When doing so, ensure that the cable is not
trapped and damaged.
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7 Commissioning the Inverter SMA Solar Technology AG
Replacement ManualSTP50-40-BFS-RM-xx-1018
7 Commissioning the Inverter
Requirements:
☐ The AC circuit breaker must be correctly rated and mounted.
☐ The inverter must be correctly mounted.
☐ All cables must be correctly connected.
☐ Unused enclosure openings must be sealed tightly with sealing plugs.
Procedure:
1. Carry out the necessary tests according to the locally applicable laws, standards and
directives for the correct recommissioning after power assembly replacement. Take the
requirements for component replacements into account (see Section2.2 "IMPORTANT
SAFETY INSTRUCTIONS", page7).
2. Ensure that the grounding conductor in the inverter is correctly connected and functions
properly.
3. Ensure that the DC load-break switch is turned to position 0.
4. For STP 50-US-40 / STP 33-US-41 / STP 50-US-41 / STP 62-US-41: Ensure that the AC load-
break switch is turned to position 0.
5. To avoid invalid serial numbers from being sent to the data logger, commission the inverter
without being connected to the local network first. To do this, ensure that the RJ45 connection
to the network is not established.
6. Position the enclosure lid of the AC-Connection Unit
on the AC-Connection Unit and first tighten the
upper-left and lower-right screws, and then the
remaining screws crosswise (TX25, torque: 6Nm
(53in-lb)).
2
1
10x
10x
7. Position the enclosure lid of the DC-Connection Unit on the DC-Connection Unit and first
tighten the upper-left and lower-right screws, and then the remaining screws crosswise (TX25,
torque: 6Nm (53in-lb)).
8. Connect the DC connector to the inverter in its original position.
☑ The DC connectors snap into place.
9. Ensure that all DC connectors are securely in place.
10. For STP 50-US-40 / STP 33-US-41 / STP 50-US-41 / STP 62-US-41: Turn the AC load-break
switch of the inverter to position I.
11. Switch on the AC circuit breaker.
☑ All 3 LEDs light up. The start-up phase begins.
☑ All 3 LEDs go out again after approximately 90seconds.
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7 Commissioning the Inverter
SMA Solar Technology AG
Replacement Manual STP50-40-BFS-RM-xx-10 19
12. Turn the DC load-break switch of the inverter to
position I.
I
13. If the green LED is still flashing, the conditions for activating feed-in operation are not yet met.
As soon as the conditions for feed-in operation are met, the inverter starts with feed-in
operation and, depending on the available power, the green LED will light up continuously or
it will pulse.
14. After starting the feed-in operation, wait 15minutes before the new assembly has
synchronized with the inverter. An inverter update of the inverter can also be carried out.
15. If the red LED lights up, an event has occurred. Find out which event has occurred and, if
necessary, initiate countermeasures.
16. After 5 minutes of feed-in operation, check whether the serial number from the inverter type
label is displayed on the user interface. If a different serial number is displayed, contact the
SMAServiceLine.
17. Ensure that the inverter feeds in correctly.
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8 Returning and Disposing of the Defective Assembly SMA Solar Technology AG
Replacement ManualSTP50-40-BFS-RM-xx-1020
8 Returning and Disposing of the Defective Assembly
If the defective assembly is to be returned, this will be stated on the order form.
Procedure:
1. If the defective assembly is to be returned:
• Pack the defective assembly for shipping. Use the original packaging for this, or
packaging that is suitable for the weight and size of the assembly.
• Organize the return shipment to SMA Solar Technology AG. Contact the Service.
2. If the assembly is not to be returned, dispose of the assembly in accordance with the locally
applicable disposal regulations for electronic waste.
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