SMA FUEL SAVE CONTROLLER 2.0M User manual

UserManual
SMA FUEL SAVE CONTROLLER 2.0M
FSC20-BA-en-10 | 100590-00.01 | Version 1.0 ENGLISH

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.
Software licenses
You will find the software licenses for the installed software modules on the Internet at www.SMA-Solar.com.
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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.
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.
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SMASolarTechnologyAG
Sonnenallee 1
34266 Niestetal
Germany
Tel. [phone]
Fax [phone]
www.SMA.de
E-mail: [email protected]
© 2004 to 2015SMASolarTechnologyAG. All rights reserved.
Legal Provisions SMA Solar Technology AG
User ManualFSC20-BA-en-102

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.................................................................................................................................................... 5
1.5 Nomenclature................................................................................................................................................... 6
2 Safety............................................................................................................................................. 7
2.1 Intended Use..................................................................................................................................................... 7
2.2 Safety Information ............................................................................................................................................ 8
3 Product Description....................................................................................................................... 9
3.1 Functions ........................................................................................................................................................... 9
3.2 Structure ............................................................................................................................................................ 10
3.3 Key Switch ........................................................................................................................................................ 10
3.4 Light Repeaters.................................................................................................................................................. 11
3.5 Type Label......................................................................................................................................................... 11
4 User Interface................................................................................................................................ 13
4.1 Requirements for the user interface display .................................................................................................... 13
4.2 User Groups and User Rights .......................................................................................................................... 13
4.3 Requirements for a Secure System Password ................................................................................................. 13
4.4 Design of the User Interface ............................................................................................................................ 14
4.5 Buttons in the header........................................................................................................................................ 15
4.6 Home Page for User Group "User" ................................................................................................................. 16
4.7 Home Page for User Group "Installer"............................................................................................................ 17
4.8 Configuration Wizard...................................................................................................................................... 17
4.8.1 Structure of the Configuration Wizard............................................................................................................ 17
4.8.2 Buttons in the Configuration Wizard .............................................................................................................. 18
4.8.3 Setting Parameters ........................................................................................................................................... 19
5 Getting Started.............................................................................................................................. 21
5.1 Logging In and Out of the User Interface ....................................................................................................... 21
5.2 Changing Passwords........................................................................................................................................ 22
5.3 Setting the Time Zone....................................................................................................................................... 22
5.4 Setting the User Interface Language ............................................................................................................... 22
6 System Monitoring........................................................................................................................ 24
6.1 Retrieving Display Values of the Entire PV Diesel Hybrid System.................................................................. 24
6.2 Retrieving Genset Display Values.................................................................................................................... 25
6.3 Retrieving PV Power Plant Display Values....................................................................................................... 28
6.4 Retrieving Display Values from Measurement Devices.................................................................................. 29
6.5 Viewing Data Records for the PV Power Plant and Gensets ......................................................................... 30
6.6 Processing Status Messages............................................................................................................................ 32
6.7 Operating Mode and Setpoints ...................................................................................................................... 34
6.7.1 Overview of Operating Modes and Setpoints............................................................................................... 34
6.7.2 Displaying Setpoints......................................................................................................................................... 35
6.7.3 Configuring the Operating Mode................................................................................................................... 36
6.7.4 Specification of Setpoints for PV Power Plant by SCADA System ................................................................ 36
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7 System Settings ............................................................................................................................. 37
7.1 Configuring the Utility Grid.............................................................................................................................. 37
7.2 Configuring Gensets......................................................................................................................................... 37
7.3 Configuring the PV Power Plant....................................................................................................................... 41
7.4 Configuring Measurement Devices ................................................................................................................ 43
7.5 Configuring Stop of the Fuel Save Controller via Switch Input DI 7............................................................. 47
7.6 Handling Existing System Settings................................................................................................................... 49
7.6.1 Saving System Settings .................................................................................................................................... 49
7.6.2 Loading System Settings .................................................................................................................................. 50
7.6.3 Deleting System Settings.................................................................................................................................. 51
8 System Control.............................................................................................................................. 52
8.1 Configuring the Minimum Genset Load Threshold......................................................................................... 52
8.2 Configuring Reverse Power Protection of the Gensets................................................................................... 53
8.3 Configuring Power Management for Gensets................................................................................................ 55
8.4 Configuring Reactive Power for PV Power Plant............................................................................................. 58
8.5 Configuring MPP Calculation for PV Power Plant .......................................................................................... 59
8.6 Configuring Setpoint Change Rate for PV inverters and Gensets ................................................................. 60
8.7 Options for Specifying the Reserve Power Setpoint of the Gensets.............................................................. 61
8.8 Configuring PV Power Plant Management ..................................................................................................... 62
9 System History .............................................................................................................................. 64
9.1 Overview of the Data Structure....................................................................................................................... 64
9.2 Viewing System History Data........................................................................................................................... 64
10 Starting and Stopping the System............................................................................................... 65
10.1 Stopping the SMA Fuel Save Controller and PV Power Plant....................................................................... 65
10.2 Starting the PV Power Plant and SMA Fuel Save Controller ......................................................................... 65
10.3 Restarting the SMA Fuel Save Controller and PV Power Plant...................................................................... 66
11 Cleaning ........................................................................................................................................ 67
12 Contact........................................................................................................................................... 68
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1 Information on this Document
1.1 Validity
This document is valid for the device type “FSC-20M” (SMAFuelSaveController2.0M).
1.2 Target group
The tasks described in this document must only be performed by qualified persons. Qualified persons must have the
following skills:
• 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 all applicable standards and directives
• Knowledge of how the SMAFuelSaveController works and is operated
• 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
1.4 Typographies
Typography Use Example
bold • Display messages
• Parameters
• Terminals
• Slots
• Elements to be selected
• Elements to be entered
• Connect the insulated conductors
to the terminals X703:1 to
X703:6.
• In the Select language drop-
down list, select the desired
language.
1 Information on this Document
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Typography Use Example
>• Several elements that are to be selected • Open the dialog box Change
Password via the following path
Settings > Change Password.
[Button]
[Key]
• Button that is to be selected or clicked
on
• Press the button [Change my
Password].
1.5 Nomenclature
Complete designation Designation in this document
SMAFuelSaveController2.0M Fuel Save Controller
SunnyTripower Inverter
Electric generator with combustion engine Genset
1 Information on this Document SMA Solar Technology AG
User ManualFSC20-BA-en-106

2 Safety
2.1 Intended Use
Together with SMA inverters, the SMA Fuel Save Controller is a system solution for the installation of photovoltaic
diesel hybrid systems through the integration of PV power plants into local utility grids based on gensets. The SMA Fuel
Save Controller monitors and controls the SMA PV inverters and allows stable operation of the photovoltaic diesel
hybrid system. To ensure this, the SMA Fuel Save Controller continuously monitors the operating state of the gensets
and loads and adjusts the output power of the SMAinverters accordingly, where necessary.
Figure 1: Regulation principle of PV systems with FuelSaveController
Gensets used in conjunction with the FuelSaveController must fulfill the reverse power limits of the
FuelSaveController (see installation manual of the Fuel Save Controller).
The power management and the communication interface of the gensets must be compatible with the
FuelSaveController for optimal operation of the photovoltaic diesel hybrid system. Therefore, the combined use of the
FuelSaveController and the gensets must be coordinated with SMA Solar Technology AG (see Technical Information
"Gensets in photovoltaic diesel hybrid systems with SMAFuelSaveController 2.0M").
The SMA Fuel Save Controller has a Modbus/TCP interface for communicating with peripheral devices. Ensure that all
communication between the SMA Fuel Save Controller and the gensets takes place via either the Modbus/TCP
interface or the CAN interface.
The product is suitable for indoor and outdoor use.
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.
Alterations to the product, 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.
2 Safety
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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.
Suitable personal protective equipment has to be worn by all persons working on or with the product.
The type label must remain permanently attached to the product.
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 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 from electric shock due to live voltage
Danger of electric shock if work is executed incorrectly or under fault conditions. An electric shock can lead to death
or serious injury.
• Disconnect the supply voltage and the measuring cables for the current- and voltage measurement before
performing any work on the Fuel Save Controller.
• Observe the five safety rules when disconnecting the supply voltage:
– Disconnect from voltage sources.
– Ensure that the device cannot be reconnected.
– Ensure that no voltage is present.
– Ground and short-circuit the device.
– Cover and isolate any adjacent live components.
Damage to the PV power plant, gensets or loads due to unauthorized access
Parameters of the FuelSaveController can be set incorrectly due to unauthorized access. When parameters are set
incorrectly, technical thresholds are being exceeded. An exceeding of technical thresholds can lead to damage of
the PV power plant, gensets or loads.
• Protect the FuelSaveController from unauthorized access.
• Remove the key from the door locks and from the key switch.
• Store the keys in a safe place.
• Ensure that only qualified persons are able to set parameters on the FuelSaveController.
• Ensure that access via port forwarding from the external network to the router is deactivated in the
FuelSaveController.
Property damage due to dust intrusion and moisture penetration
Dust intrusion or moisture penetration can damage the Fuel Save Controller.
• Protect the Fuel Save Controller against dust and moisture.
• Do not open the FuelSaveController at high humidity or high dust levels.
• Close the enclosure after performing any work on the FuelSaveController.
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3 Product Description
3.1 Functions
Together with SMA inverters, the SMA Fuel Save Controller is a system solution for the installation of photovoltaic
diesel hybrid systems through the integration of PV power plants into local utility grids based on gensets. The SMA Fuel
Save Controller monitors and controls the SMA PV inverters and allows stable operation of the photovoltaic diesel
hybrid system. To ensure this, the SMA Fuel Save Controller continuously monitors the operating state of the gensets
and loads and adjusts the output power of the SMAinverters accordingly, where necessary.
The Fuel Save Controller performs the following tasks:
• Monitoring the power and operating state of the gensets
• Monitoring the loads and state of the local grid
• Calculating suitable values for the maximum power of the inverters according to defined parameter settings and
the current status of gensets and loads
• Control and communication interface to the inverters
• Internal logging of all relevant system data (e.g. for local and remote monitoring)
• Emergency shutdown of the PV inverters under fault conditions in the photovoltaic diesel hybrid system
The basic configuration enables communication with one higher-level genset control system and inverters of the
SunnyTripower series. Further devices can be installed in consultation with SMA Solar Technology AG. To ensure
system stability at all times, the Fuel Save Controller uses Modbus/TCP or CAN to monitor whether the gensets are
connected to the local utility grid and what level of active power and reactive power the gensets are feeding into the
grid.
The Fuel Save Controller is equipped with a Modbus/TCP interface for local and remote monitoring as well as for the
communication with peripheral devices.. Depending on the configuration, it is possible to communicate with the
following peripheral devices:
• A higher-level control system with up to eight gensets
• Controllers for up to eight gensets
The power management and the communication interface of the gensets must be compatible with the
FuelSaveController for optimal operation of the photovoltaic diesel hybrid system. Therefore, the combined use
of the SMAFuelSaveController and the gensets must be coordinated with SMA Solar Technology AG (see
Technical Information "Gensets in photovoltaic diesel hybrid systems with SMAFuelSaveController 2.0M").
• up to 64 inverters
• a remote monitoring system (SCADA or user interface / FTP)
The SMA Fuel Save Controller is also equipped with a CAN interface for communicating with up to eight gensets.
Ensure that all communication between the SMA Fuel Save Controller and the gensets takes place via either the
Modbus/TCP interface or the CAN interface. The FuelSaveController is not designed to communicate with gensets
via the Modbus/TCP interface and CAN interface at the same time.
In combination with the system specifications defined during commissioning and the data from the load measurements
and grid analyses, the Fuel Save Controller calculates power values for active power and reactive power suitable for
the inverters. The power values are transmitted as setpoints to the PV inverters.
For local and remote monitoring, the SMA Fuel Save Controller logs data on the power and operating state of the
inverters and the loads, and the power and operating state of the gensets. The logged data is saved in CSV format for
100days and can be accessed via the integrated FTP server.
The Fuel Save Controller is equipped with up to three internal measurement modules. Each measuring module has one
measuring system for voltage measurement and two measuring systems for current measurement. All measuring
systems records the measuring values via three conductors. During network analysis, the FuelSaveController uses the
measured values.
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During commissioning of the FuelSaveController, the user has the possibility to activate various functions for stable
and reliable operation such as minimum genset loading and power control range. In addition, it is possible to remotely
monitor all relevant measurement data, process data and the current system status by means of SCADA or a web-
based interface.
3.2 Structure
Figure 2: Fuel Save Controller
Position Designation
A Key switch
BOperation light repeater
CWarning light repeater
3.3 Key Switch
Position Description
Start The FuelSaveController can be started via the Start position.
Stop Before the FuelSaveController can be stopped, ensure that the the current reserve power of
the gensets is sufficient for supplying the power required by the loads. Genset overload may
result in destruction of the gensets (see Section10.1 "Stopping the SMA Fuel Save Controller
and PV Power Plant", page65).
The FuelSaveController can be stopped Stopposition.
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3.4 Light Repeaters
The Operation und Warning light repeaters indicate the current status of the Fuel Save Controller.
Operation
light repeater
Warning light
repeater
Operating state Description
Both light repeater are flashing
alternately.
BOOT The SMA Fuel Save Controller is starting.
INIT The FuelSaveController establishes the communication
to the other devices in photovoltaic diesel hybrid system.
Flashing every
1 seconds
Off STANDBY The SMA Fuel Save Controller is in standby mode.
Flashing every
0.5 seconds
Off MANUAL The SMA Fuel Save Controller is in manual mode. The
setpoint values for the active and reactive power of the
PV power plant are set via the user interface of the
FuelSaveController.
glowing Off OPERATE The SMA Fuel Save Controller is in automatic mode and
specifies the setpoints for the active and reactive power
of the PV power plant. If the FuelSaveController is con-
nected to a SCADA system, it will use the setpoints from
the SCADA system in automatic mode.
glowing Flashing every
1 seconds
SAFETY The SMA Fuel Save Controller has switched to a safe
state following an error. The PV power can be reduced
compared with operation in automatic mode.
Off glowing ERROR An error has occurred in the SMA Fuel Save Controller.
Automatic operation of the PV diesel hybrid system is in-
terrupted.
Off Flashing every
0.5 seconds
PERMOFF An error has occurred which require a stop and restart of
the system.
3.5 Type Label
The type label clearly identifies the product. The type label is located on the right-hand side of the enclosure. You will
find the following information on the type label:
• Device type (Type)
• Serial number (SerialNo.)
You will require the information on the type label to use the product safely and when seeking customer support from
Service (see Section12 "Contact", page68).
Symbols on the Type Label
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.
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Symbol Explanation
Beware of a danger zone
This warning symbol indicates a danger zone. Be particularly vigilant and cautious when working
on the product.
Observe the documentation
Observe all documentation supplied with the product.
WEEE designation
Do not dispose of the product together with the household waste but in accordance with the dis-
posal regulations for electronic waste applicable at the installation site.
CE marking
The product complies with the requirements of the applicable EU directives.
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4 User Interface
4.1 Requirements for the user interface display
☐ A computer for displaying the user interface must be available.
☐ The computer must be connected to the SMA Fuel Save Controller via Ethernet.
☐ A web browser must be installed on the computer.
☐ JavaScript must be enabled in the web browser.
☐ The Java Runtime Environment software (version 6 or higher) must be installed on the computer.
☐ The IP address of the SMA Fuel Save Controller set during commissioning must be known.
Supported web browsers:
• MicrosoftInternetExplorer from version9
• GoogleChrome from version40
Display resolution:
• Minimum: 800pixels x 600pixels
• Recommended: from 1,024 pixels x 768pixels
4.2 User Groups and User Rights
The SMA Fuel Save Controller distinguishes between the user groups User and Installer.
User rights User group
User Installer
Retrieve values of the PV diesel hybrid system and its subsystems, e.g.
the gensets, the PV power plant or the load controller (see Section6
"System Monitoring", page24)
✓ ✓
Set parameters of the PV diesel hybrid system (see Section7 "System
Settings", page37)
– ✓
Save, load and delete system settings (see Section7, page37) – ✓
Set control functions of the PV diesel hybrid system and subsystems
(see Section8 "System Control", page52)
– ✓
Retrieve data for acquisition of measured values (see Section9 "Sys-
tem History", page64)
✓ ✓
Retrieve event and error messages (see Section9 "System History",
page64)
– ✓
4.3 Requirements for a Secure System Password
The system password entered for your user group when you log into the FuelSaveController user interface for the first
time is a default system password. For security reasons, you should change the default system password as soon as
possible following commissioning (see Section5.2, page22).
You can increase the security of your system password with the following measures:
• Select system passwords containing at least eight characters.
• Use combinations of upper-case and lower-case letters, special characters and numbers.
• Do not use names or common words (e.g., "dog", "cat", "house").
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• For the system password, avoid using words that have any personal relevance to you such as the names of
persons or pets, personnel numbers, identification numbers or car license plates.
• Do not repeat names or words (e.g., "househouse" or "catcat").
• Do not use combinations of numbers or letters in the same order as they appear on your keyboard (e.g.,
"12345", "qwert").
4.4 Design of the User Interface
A
B
D
C
Figure 3: User interface of the Fuel Save Controller (example)
Position Designation Explanation
A Header Enables access to the main functions of the user interface (see Section4.5 "Buttons in
the header", page15).
Displays the current path (e.g., Home>StationsPlantOverview).
B Content area Depending on the selected page, display values, adjustable parameters or a combina-
tion of display values and adjustable parameters are shown in the content area. Addi-
tional buttons are available on individual pages.
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Position Designation Explanation
C Status bar Displays the following information:
• Graphical display of the operating state (see Section3.4 "Light Repeaters", page11
)
•Status: Operating state of the FuelSaveController:
–BOOT: FuelSaveController is starting.
–INIT: FuelSaveController is establishing communication with the other
devices in the PV diesel hybrid system.
–STANDBY: FuelSaveController is in standby mode.
–MANUAL: FuelSaveController is in manual mode. The setpoint values for
the active and reactive power of the PV power plant are set via the user
interface.
–OPERATE: Fuel Save Controller is in automatic mode and specifies the
setpoints for the active and reactive power of the PV power plant. If the
FuelSaveController is connected to a SCADA system, it will use the setpoints
from the SCADA system in automatic mode.
–SAFETY: The FuelSaveController has switched to a safe state following an
error. The PV power can be reduced compared with operation in automatic
mode.
–ERROR: There is an error in the FuelSaveController. Automatic operation of
the PV diesel hybrid system is interrupted.
–PERMOFF: A serious error has occurred that can be rectified only by
stopping and restarting the system.
•Accesslevel: User group that you are logged in with
•Software version: Current software version of the FuelSaveController
• Date and location
D Page and menu
selection
Access to the various pages and menus of the user interface
4.5 Buttons in the header
Symbol Designation Description
Home Use this symbol to access the home page.
Return Use this symbol to go back to the previous page.
Plant* Use this symbol to call up the HybridPlantOverview page. The HybridPlan-
tOverview page shows an overview of the display values for the PV diesel hy-
brid system (see Section6.1, page24).
Wizard* Use this symbol to call up the configuration wizard and edit the system settings
(see Section7, page37).
Control * Use this symbol to set various parameters relating to system control (see Sec-
tion8, page52).
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Symbol Designation Description
Export* Use this symbol to call up the following functions:
• Save current system settings (see Section7.6.1, page49)
• Load saved system settings (see Section7.6.2, page50)
• Delete saved system settings (see Section7.6.3, page51)
Logout Use this symbol to log out of the system.
* To use this button you must be logged in as an Installer.
4.6 Home Page for User Group "User"
A
C
B
Figure 4: Home page for user group User (example)
Position Designation Explanation
A Hybrid Plant
Overview
Overview of all display values of the PV diesel hybrid system (see Section6.1
"Retrieving Display Values of the Entire PV Diesel Hybrid System", page24)
B Language Dialog box for setting the language of the user interface (see Section5.4 "Setting
the User Interface Language", page22)
C Login Dialog box for logging into the user interface (see Section5.1 "Logging In and
Out of the User Interface", page21)
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4.7 Home Page for User Group "Installer"
Figure 5: Home page for user group Installer (example)
Button Description
Plant Overview Access to system monitoring(see Section6, page24)
Control Functions Access to system control (see Section8, page52)
Configuration Wizard Access to system settings (see Section7, page37)
Parameter Files Save current system settings and load/delete saved system settings (see Section7.6,
page49)
4.8 Configuration Wizard
4.8.1 Structure of the Configuration Wizard
To use the configuration wizard you must be logged in as an Installer.
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A
B
Figure 6: Home page of the configuration wizard (example)
Position Designation Explanation
A Automatic configuration The automatic configuration wizard guides you through the configuration
of the entire PV diesel hybrid system. During initial commissioning of the PV
diesel hybrid system the automatic configuration wizard must be run com-
pletely. In the Manual configuration area the completion status for each
subsystem is displayed in %. Once the completion status has reached
100% for all subsystems, automatic configuration is completed.
B Manual configuration After initial commissioning, use the manual configuration wizard to carry
out settings on individual subsystems:
• Utility grid (see Section7.1, page37)
• Gensets (see Section7.2, page37)
• PV power plant (see Section7.3, page41)
• Measurement devices (see Section7.4, page43)
• Digital inputs and outputs (see Section7.5, page47)
In addition, the manual configuration wizard provides an overview of the
current system settings.
4.8.2 Buttons in the Configuration Wizard
To use the configuration wizard you must be logged in as an Installer.
Button Description
Add new item Add device type, e.g. a type of inverter
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Button Description
Adjust Adjust configuration of a subsystem
Apply Save system settings
This saves all system settings in the active dialog. If you exit the active dialog
without saving the system settings, any system settings made since the last save
will be discarded.
Continue Wizard Continue to the next dialog
Delete config. Delete configuration of a subsystem
Discard Discard system settings
Any system settings made in the active dialog and not saved by pressing the Ap-
ply button will be discarded.
Done Close the active dialog and switch to the overview of current system settings
Remove item Remove device type, e.g. a type of inverter
Start Start automatic configuration wizard
View Show overview of current system settings
4.8.3 Setting Parameters
Setpoints for the Subsystems
Basically you should always proceed as follows to set the value of a parameter. Note the instructions for the separate
subsystems according to the following table.
Subsystem See
Utility grid (see Section7.1, page37)
Gensets (see Section7.2, page37)
PV power plant (see Section7.3, page41)
Measurement devices (see Section7.4, page43)
Digital inputs and outputs (see Section7.5, page47)
Display of parameters with non-permitted values:
Symbol Designation Explanation
Error symbol If a parameter is set to a non-permitted value, it will be marked as invalid by this
error symbol.
4 User Interface
SMA Solar Technology AG
User Manual 19FSC20-BA-en-10

Risk of damage to devices by entry of incorrect parameters
Incorrect parameters may damage devices and result in system malfunctions in the PV diesel hybrid system. All
adjustable parameters are protected by the password of the user group Installer.
• Only a qualified person is permitted to set and adjust parameters.
• Only give the password for the user group Installer to qualified persons.
• Change the default passwords as soon as possible.
Procedure:
1. Log in as Installer (see Section5.1, page21).
2. Select a menu via the page and menu selection.
3. Select desired parameter in the content area:
• To change parameters with an entry field, enter new values and press Enter after each entry.
By pressing Enter, the entered value is adopted in the user interface of the FuelSaveController.
• To change parameters with a checkbox, activate the required checkbox.
• To change parameters with a drop-down list, select the desired value in the appropriate drop-down list.
4. If the error symbol appears, check your entry and set the parameter to a valid value. To do this, repeat the
previous step.
5. To adopt current parameter settings in the control of the FuelSaveController, press [Apply].
6. To discard current parameter settings, press [Discard].
4 User Interface SMA Solar Technology AG
User ManualFSC20-BA-en-1020