SMA SUNNY BOY 3.0-US User manual

SUNNY BOY 3.0-US / 3.8-US / 5.0-US /
6.0-US / 7.0-US / 7.7-US
Replacing a Defective Display
SB30-77-1SP-US-40-AT-Display-SG-xx-10 | 105831-00.01 | Version 1.0

Table of Contents
1 Information on this Document................................................. 3
1.1 Validity ............................................................................................... 3
1.2 Target group ...................................................................................... 3
1.3 Symbols.............................................................................................. 3
1.4 Nomenclature.................................................................................... 3
1.5 Typographies..................................................................................... 4
2 Safety Information ................................................................... 5
3 Scope of Delivery..................................................................... 6
4 Disconnecting the Inverter from Voltage Sources................. 7
5 Replacing the Display .............................................................. 9
6 Packing and Returning the Defective Assembly / Disposing
of the Defective Assembly ....................................................... 10
7 Contact ...................................................................................... 11
Table of Contents SMA Solar Technology AG
Service ManualSB30-77-1SP-US-40-AT-Display-SG-xx-102
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1 Information on this Document
1.1 Validity
This document describes 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:
• SB3.0-1SP-US-40 (Sunny Boy 3.0-US)
• SB3.8-1SP-US-40 (Sunny Boy 3.8-US)
• SB5.0-1SP-US-40 (Sunny Boy 5.0-US)
• SB6.0-1SP-US-40 (Sunny Boy 6.0-US)
• SB7.0-1SP-US-40 (Sunny Boy 7.0-US)
• SB7.7-1SP-US-40 (Sunny Boy 7.7-US)
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
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
1.4 Nomenclature
Complete designation Designation in this document
SunnyBoy Inverter, product
1 Information on this Document
SMA Solar Technology AG
Service Manual 3SB30-77-1SP-US-40-AT-Display-SG-xx-10
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Complete designation Designation in this document
SMA Solar Technology America LLC SMA
SMA Solar Technology Canada Inc.
1.5 Typographies
Typography Use Example
bold • Display texts
• Elements on a user interface
• Terminals
• Elements to be selected
• Elements to be entered
• The value can be found in
the field Energy.
• Select Settings.
• 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 [Next].
1 Information on this Document SMA Solar Technology AG
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2 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 in the inverter
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.
• All work on the inverter must be carried out by qualified persons only. Qualified persons
must at least have the following skills:
– Knowledge of how SMA inverters work and are operated
– Training in how to deal with the dangers and risks associated with installing, repairing
and using electrical devices and installations
– Knowledge of how to safely disconnect SMA inverters
– Knowledge of all applicable laws, standards and directives
• Prior to performing any work on the inverter, disconnect it from all voltage sources as
described in this document (see Section4, page7).
• After disconnecting the inverter from voltage sources, a certain waiting time must be
observed to allow the residual voltages in the DC link of the inverter or in the charging
circuit of the capacitors to discharge. This waiting time is at least ten minutes.
• Do not touch any live components of the inverter.
Risk of burns from hot surfaces
The surface of the inverter can get very hot. Touching the surface can result in burns.
• Mount the inverter in such a way that it cannot be touched inadvertently.
• Do not touch hot surfaces.
• Wait 30 minutes for the surface to cool sufficiently.
• Observe the safety messages on the inverter.
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.
2 Safety Information
SMA Solar Technology AG
Service Manual 5SB30-77-1SP-US-40-AT-Display-SG-xx-10
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3 Scope of Delivery
Check the scope of delivery for completeness and any externally visible damage. Contact your
distributor if the scope of delivery is incomplete or damaged.
B
A
Figure 1 : Components included in the scope of delivery
Position Quantity Designation
A 1 Display assembly
B 1 Service Manual
3 Scope of Delivery SMA Solar Technology AG
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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.
Destruction of the measuring device due to overvoltage
• Only use measuring devices with a DC input voltage range of 600 V or higher.
1. Disconnect the AC circuit breaker and secure it against reconnection.
2. Set the DC load-break switch of the inverter to
O.
3. Secure the DC load-break switch against
reconnection using a suitable padlock.
4. If the multifunction relay is used, switch off any supply voltage to the load.
4 Disconnecting the Inverter from Voltage Sources
SMA Solar Technology AG
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5.
Danger to life due to high voltages on the DC-in connecting terminal plate
When exposed to sunlight, the PV array generates dangerous direct voltage. Touching the
DC conductors can lead to lethal electric shocks. Even if the DC load-break switch of the
inverter is in the O, position, there will be dangerous direct voltage present in the DC
conductors and on the DC-in connecting terminal plate in the Connection Unit.
• If an external DC disconnecting switch is available, open the external DC disconnecting
switch.
• If there is no external DC disconnecting switch, cover the PV modules with opaque
material (e.g. foil).
• Ensure that there is no voltage on the DC conductors of the PV array.
• Wait five minutes before working on the inverter.
• Leave the DC-in connecting terminal plate plugged into the Connection Unit and only
touch it on the black enclosure.
6. Wait until the LEDs have gone out.
7. Unscrew all six screws of the enclosure lid of the Connection Unit with a Torx screwdriver (TX
25) and remove the enclosure lid carefully toward the front. While doing so, note that the
display assembly on the enclosure lid and the communication assembly in the inverter are
connected via a ribbon cable.
8. Disconnect the display cable from the socket on
the communication assembly.
9. Use a current clamp to ensure that no current is present in the DC conductors.
10. Ensure there is no voltage on the AC-out connecting terminal plate between L1 and N and L2
and N using a suitable measuring device. To do this, stick the test probe (max. diameter: 2mm
(0.078in)) in each rectangular opening of the terminal.
11. Ensure there is no voltage on the AC-out connecting terminal plate between L1 and the
equipment grounding conductor and L2 and the equipment grounding conductor using a
suitable measuring device. To do this, stick the test probe (max. diameter: 2mm (0.078in)) in
each rectangular opening of the terminal.
4 Disconnecting the Inverter from Voltage Sources SMA Solar Technology AG
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5 Replacing the Display
1. Pull the ribbon cable out of the jack of the
defective display assembly and put it aside.
2. Detach the locking tabs and remove the display
assembly.
1
2
1
3. Insert the new display assembly. Make sure that
the display is on the correct side.
2
1
2
4. Plug the ribbon cable into the jack on the display
assembly.
5. Ensure that the ribbon cable is securely in place.
6. Recommission the inverter (see inverter manual).
5 Replacing the Display
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6 Packing and Returning the Defective Assembly /
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. To do this, contact Service (refer to www.SMA-
Solar.com for contact details).
2. If the assembly is not to be returned, dispose of the assembly in accordance with the locally
applicable disposal regulations for electronic waste.
6 Packing and Returning the Defective Assembly / Disposing of the
Defective Assembly
SMA Solar Technology AG
Service ManualSB30-77-1SP-US-40-AT-Display-SG-xx-1010
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