SMA MFR01-10 User manual

MFR-NR-IA-en-23 | Version 2.3 ENGLISH
Installation Manual
MULTIFUNCTION RELAY

Legal Provisions SMA Solar Technology AG
2 MFR-NR-IA-en-23 Installation Manual
Legal Provisions
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or other proper use is allowed and does not require prior approval.
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SMA Solar Technology AG
Sonnenallee 1
34266 Niestetal
Germany
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www.SMA.de
E-mail: [email protected]
© 2004 until 2016 SMA Solar Technology AG. All rights reserved.

SMA Solar Technology AG Table of Contents
Installation Manual MFR-NR-IA-en-23 3
Table of Contents
1 Information on this Document. . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Validity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Target Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.4 Typographies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.5 Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.6 Display of Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Intended Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3 Symbol on the Product. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Scope of Delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4 Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1 Safety during Electrical Connection. . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2 Electrical Connection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.3 Overview of the Connection Area. . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.4 Installing the Multifunction Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.4.1 Mounting Position and Cable Route . . . . . . . . . . . . . . . . . . . . . . . . 12
4.4.2 Installing the Multifunction Relay in the Sunny Boy Smart Energy . . 15
4.4.3 Installing the Multifunction Relay in the Sunny Boy / Windy Boy or
Sunny Tripower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.5 Selecting the Operating Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.6 Connecting the Multifunction Relay. . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.6.1 Connection Options for the Multifunction Relay . . . . . . . . . . . . . . . 20
4.6.2 Connecting to the Multifunction Relay . . . . . . . . . . . . . . . . . . . . . . . 24
5 Changing the Operating Mode of the Multifunction Relay . . 26
6 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
7 Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
8 EU Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Table of Contents SMA Solar Technology AG
4 MFR-NR-IA-en-23 Installation Manual

SMA Solar Technology AG 1 Information on this Document
Installation Manual MFR-NR-IA-en-23 5
1 Information on this Document
1.1 Validity
This document is valid for device type "MFR01-10".
1.2 Target Group
The activities 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
Indicates that the following section contains tasks that must be
performed by qualified persons only
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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1.4 Typographies
1.5 Nomenclature
1.6 Display of Parameters
Depending on the type of communication, (e.g. RS485, BLUETOOTH or Speedwire/Webconnect)
the parameters and messages are displayed differently on the communication products.
This document uses both methods of displaying parameters.
Typography Usage Example
bold • Parameter
• Elements to be selected
• Elements to be entered
• Select the parameter
Operating mode of
multifunction relay or
Mlt.OpMode and set
the desired operating
mode.
Complete designation Designation in this document
Multifunction relay Multifunction relay, product
Sunny Boy, Windy Boy, Sunny Tripower,
Sunny Boy Smart Energy
Inverter
PV system, small wind turbine system System
Example: Display of the parameter for setting the operating mode of the
multifunction relay
• For communication via RS485: parameter Mlt.OpMode
• For communication via BLUETOOTH or Speedwire/Webconnect: parameter Operating
mode of multifunction relay

SMA Solar Technology AG 2 Safety
Installation Manual MFR-NR-IA-en-23 7
2 Safety
2.1 Intended Use
The multifunction relay is a multifunctional interface that can be configured for the operating mode
used by a particular system (see Section4.5 "Selecting the Operating Mode", page19).
The multifunction relay can be retrofitted or installed in the inverter at the factory if specified in the
order.
The multifunction relay is suitable for use in the following SMA inverters:
• SB 3000TL-21, SB 3600TL-21, SB 4000TL-21, SB 5000TL-21
• SB 3600SE-10, SB 5000SE-10
• WB 3000TL-21, WB 3600TL-21, WB 4000TL-21, WB 5000TL-21
• SB 2500TLST-21, SB 3000TLST-21
• STP 8000TL-10, STP 10000TL-10, STP 12000TL-10, STP 15000TL-10, STP 17000TL-10
• STP 15000TLHE-10, STP 20000TLHE-10, STP 15000TLEE-10, STP 20000TLEE-10
• STP 15000TL-30, STP 20000TL-30, STP 25000TL-30
• STP 10000TLEE-JP-10
• STP 20000TLEE-JP-11
• STP 25000TL-JP-30
Use this product only in accordance with the information provided in the enclosed documentation and
with the locally applicable standards and directives. Any other application may cause personal injury
or property damage.
For safety reasons, it is not allowed to modify the product or install components that are not explicitly
recommended or distributed by SMA Solar Technology AG for the product. Unauthorized changes
and modifications will void all warranty claims and the operating permission.
Any use of the product other than that described in the Intended Use section does not qualify as
appropriate.
The enclosed documentation is an integral part of this product. Keep the documentation in a
convenient place for future reference and observe all instructions contained therein.

2 Safety SMA Solar Technology AG
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2.2 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 or property damage and to ensure long-term operation of the product,
read this section carefully and observe all safety information at all times.
2.3 Symbol on the Product
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.
• All work on the inverter must be carried out by qualified persons only.
• Prior to performing any work on the inverter, always disconnect the inverter from all voltage
sources (see the inverter manual).
• Do not touch any live components of the inverter.
Risk of burns due to hot inverter enclosure parts
Some parts of the inverter enclosure can get hot during operation.
• Do not touch any parts other than the lower enclosure lid of the inverter during operation.
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.
Symbol Explanation
Danger to life due to electric shock
The product operates at high voltages. All work on the product must be
carried out by qualified persons only.

SMA Solar Technology AG 3 Scope of Delivery
Installation Manual MFR-NR-IA-en-23 9
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.
Figure1: Components included in the scope of delivery
Position Quantity Designation
A 1 Multifunction relay*
* This component is not included if the multifunction relay is installed upon delivery.
B 1 M20x1.5 cable gland*
C 1 Installation manual
D 1 M4x8 cylindrical screw*
E1Washer M4*

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4 Electrical Connection
4.1 Safety during Electrical Connection
4.2 Electrical Connection Procedure
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.
• All work on the inverter must be carried out by qualified persons only.
• Prior to performing any work on the inverter, always disconnect the inverter from all voltage
sources (see the inverter manual).
• Do not touch any live components of 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.
Procedure See
1. Installation of the multifunction relay: Install the multifunction relay in
the inverter if it is not installed in the inverter upon delivery.
Section 4.4, page12
2. Selection of the operating mode: Select the operating mode in
which you want to use the multifunction relay.
Section 4.5, page19
3. Connection of the multifunction relay: Connect the multifunction
relay based on the operating mode and the corresponding wiring
diagram.
Section 4.6, page20
4. Change of the operating mode: Change the operating mode of the
multifunction relay if you do not want to operate the multifunction
relay in the operating mode Fault indication (FltInd) and do not
plan to connect a display to the multifunction relay.
Section 5, page26

SMA Solar Technology AG 4 Electrical Connection
Installation Manual MFR-NR-IA-en-23 11
4.3 Overview of the Connection Area
Figure2: Design of the multifunction relay
Position Designation
A Connecting terminal plate for the connection to the multifunction relay
B Ribbon cable for the connection in the inverter
C Hole for attaching the multifunction relay in the inverter

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4.4 Installing the Multifunction Relay
4.4.1 Mounting Position and Cable Route
Mounting Position and Cable Route in the Sunny Tripower
Figure3: Installation area and cable route in the Sunny Tripower with the lower enclosure lid open and the
display assembly flipped up
Position Designation
A Inverter display assembly
B Installation location of the multifunction relay
C Cable route for the connection to the multifunction relay
D M20x1.5 cable gland

SMA Solar Technology AG 4 Electrical Connection
Installation Manual MFR-NR-IA-en-23 13
Mounting Position and Cable Route in the Sunny Boy Smart Energy
Figure4: Installation area and cable route in the Sunny Boy Smart Energy with the enclosure lid open and the
display flipped up
Position Designation
AInverter display
B Installation location of the multifunction relay
C Cable route for the connection to the multifunction relay
D M20x1.5 cable gland

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Mounting Position and Cable Route in the Sunny Boy / Windy Boy
Figure5: Installation area and cable route in the Sunny Boy/Windy Boy with the lower enclosure lid open and
the display assembly flipped up
Position Designation
A Inverter display assembly
B Installation location of the multifunction relay
C Cable route for the connection to the multifunction relay
D M20x1.5 cable gland

SMA Solar Technology AG 4 Electrical Connection
Installation Manual MFR-NR-IA-en-23 15
4.4.2 Installing the Multifunction Relay in the
Sunny Boy Smart Energy
2. Removing the display:
• Flip the display up.
• Remove the plug of the display ribbon cable
from the pin connector on the display
assembly.
• Flip the display down.
• Press the right-hand retainer outwards.
• Pull the display out of the right-hand retainer.
• Pull the display out of the left-hand retainer.
• Set the display aside in a safe place.
1.
Danger to life due to high voltages in the inverter
• Disconnect the inverter from voltage sources and open the enclosure lid (see inverter
manual).

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3. Insert the ribbon cable of the multifunction relay into
the pin connector on the display assembly.
4. Insert the multifunction relay in the inverter. Lead the
left-hand key on the multifunction relay into the hole
in the plastic retainer for the display assembly.
5. Fasten the multifunction relay using the washer and
the cylindrical screw (torque: 1.5 Nm). Use an
Allen key (AF 3).
6. Install the display:
• Plug the ribbon cable plug into the pin
connector on the display assembly.
• Lead the display into the right-hand retainer.
• Lead the display into the left-hand retainer.

SMA Solar Technology AG 4 Electrical Connection
Installation Manual MFR-NR-IA-en-23 17
4.4.3 Installing the Multifunction Relay in the Sunny Boy /
Windy Boy or Sunny Tripower
Procedure:
2. Release the display assembly screw and flip the display assembly up.
3. The display assembly snaps into place.
4. Insert the multifunction relay in the inverter. Lead the
left-hand key on the multifunction relay into the hole
in the plastic retainer for the display assembly.
5. Lead the ribbon cable upwards behind the display
assembly.
Displayed graphics
This section describes the installation of the multifunction relay, but only shows the
Sunny Tripower in the illustrations. The procedure for installing the multifunction relay in
Sunny Boy / Windy Boy and Sunny Tripower inverters is identical. Only the inverter
environment is different.
1.
Danger to life due to high voltages in the inverter
• Disconnect the inverter from all voltage sources and open the lower enclosure lid
(see inverter manual).

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6. Fasten the multifunction relay using the washer and
the cylindrical screw (torque: 1.5 Nm). Use an
Allen key (AF 3).
7. Flip the display assembly down.
8. Tighten the screw of the display assembly.
9. Insert the plug from the multifunction relay ribbon
cable into the left-hand pin connector on the display
assembly. You have to press apart the lock hooks
on the pin connector in order to insert the plug.
☑ After inserting the plug, the lock hooks close.

SMA Solar Technology AG 4 Electrical Connection
Installation Manual MFR-NR-IA-en-23 19
4.5 Selecting the Operating Mode
You can choose between the following operating modes:
Error message required by standard
In some countries, signaling of errors is required by standards, e.g. IEC 62109-2. In order to
meet the standard requirement, take one of the following measures:
• Operate the multifunction relay in the operating mode Fault indication (FltInd) and
connect a display to the multifunction relay that signals an error or the undisturbed
operation of the inverter.
• Activate the error alarm in Sunny Portal (see the Sunny Portal user manual at
www.SunnyPortal.com for information on receiving error alarms via Sunny Portal).
This requires the inverter to be registered in Sunny Portal.
Operating mode of
multifunction relay
(Mlt.OpMod)
Description
Fault indication (FltInd) The multifunction relay controls a display device which,
depending on the type of connection, signals either an error or the
undisturbed operation of the inverter.
This operating mode is set by default.
Self-consumption
(SelfCsmp)
The multifunction relay switches the loads on or off depending on
the amount of power available from the PV array. If a battery is
integrated in the system, the multifunction relay will still switch the
loads on or off depending on the amount of power available from
the PV array, not from the battery.
Control via communication
(ComCtl)
The multifunction relay switches loads on or off according to
commands transmitted by a communication product.
Battery bank (BatCha) The multifunction relay controls the charging of external batteries
depending on the amount of power available from the system.
Fan control (FanCtl) The multifunction relay controls an external fan depending on the
temperature of the inverter.
If the temperature of the inverter is 5°C higher than a specific
threshold set in the inverter, the fan starts automatically. If the
temperature of the inverter is 10°C below the set threshold, the
fan stops automatically.
Switching status grid relay
(GriSwCpy)
The multifunction relay switches simultaneously with the grid relay
of the inverter and transmits a signal to the grid operator.

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4.6 Connecting the Multifunction Relay
4.6.1 Connection Options for the Multifunction Relay
There is a different connection procedure depending on which operating mode you select.
Operating mode of
multifunction relay
(Mlt.OpMod)
Connection option
Fault indication (FltInd) Using the multifunction relay as fault indicator contact
Self-consumption
(SelfCsmp)
Controlling loads or charging batteries in a power-dependent
way via the multifunction relay
Control via communication
(ComCtl)
Controlling loads or charging batteries in a power-dependent
way via the multifunction relay
Battery bank (BatCha) Controlling loads or charging batteries in a power-dependent
way via the multifunction relay
Fan control (FanCtl) Connecting the external fan (see fan documentation)
Switching status grid relay
(GriSwCpy)
Reporting the switching status of the grid relay