Operating
Instructions
Fronius Smart Meter 50kA-3
Operating Instructions
EN
42,0426,0280,EN 009-28042023
Contents
Safety rules 4
Explanation of safety notices 4
General 4
Environmental conditions 5
Qualified personnel 5
Copyright 5
Data protection 5
General 6
Device description 6
Symbols on the device 6
Positioning 6
Installation 8
Checklist for installation 8
Installation 8
Protective circuit 8
Cabling 9
Selection criteria for current transformers 11
Connecting the current transformers 12
Suitable voltage transformers 12
Connecting the data communication cable to the inverter 13
Terminating resistors - Explanation of symbols 14
Terminating resistors 14
Setting the transformation ratio of the current and voltage transformers on the Fronius
Smart Meter
Multi-meter system - Explanation of symbols 16
Modbus participants - Fronius SnapINverter 17
Multi-meter system - Fronius SnapINverter 18
Modbus participants - Fronius GEN24 19
Multi-meter system - Fronius GEN24 inverter 20
Menu structure 21
Setting the address of the Fronius Smart Meter 21
Reading the Fronius Smart Meter operating parameters 22
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16
Start-up 25
Fronius SnapINverter 27
General 27
Connecting to the Fronius Datamanager 27
Configuring the Fronius Smart Meter as the primary meter 27
Configuring the Fronius Smart Meter as a secondary meter 28
Fronius GEN24 inverter 29
General 29
Installation using the web browser 29
Configuring the Fronius Smart Meter as the primary meter 30
Configuring the Fronius Smart Meter as a secondary meter 30
Technical data 32
Technical data 32
Fronius manufacturer's warranty 35
3
Safety rules
Explanation of
safety notices
DANGER!
Indicates immediate danger.
If not avoided, death or serious injury will result.
▶
WARNING!
Indicates a potentially hazardous situation.
If not avoided, death or serious injury may result.
▶
CAUTION!
Indicates a situation where damage or injury could occur.
If not avoided, minor injury and/or damage to property may result.
▶
NOTE!
Indicates a risk of flawed results and possible damage to the equipment.
General The device has been manufactured in line with the state of the art and according
to recognized safety standards. If used incorrectly or misused, however, it can
cause:
Injury or death to the operator or a third party
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Damage to the device and other material assets belonging to the operating
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company.
All personnel involved in commissioning, maintenance, and servicing of the
device must:
Be suitably qualified
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Have knowledge of and experience in dealing with electrical installations and
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Have fully read and precisely followed these Operating Instructions
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The Operating Instructions must always be at hand wherever the device is being
used. In addition to the Operating Instructions, attention must also be paid to
any generally applicable and local regulations regarding accident prevention and
environmental protection.
All safety and danger notices on the device:
Must be kept in a legible state
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Must not be damaged
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Must not be removed
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Must not be covered, pasted or painted over
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The terminals can reach high temperatures.
Only operate the device when all protection devices are fully functional. If the
protection devices are not fully functional, there is a danger of:
Injury or death to the operator or a third party
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Damage to the device and other material assets belonging to the operating
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company
4
Any safety devices that are not fully functional must be repaired by an authorised specialist before the device is switched on.
Never bypass or disable protection devices.
For the location of the safety and danger notices on the device, refer to the section headed "General remarks" in the Operating Instructions for the device.
Any equipment malfunctions which might impair safety must be remedied before
the device is turned on.
This is for your personal safety!
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Environmental
conditions
Qualified personnel
Operation or storage of the device outside the stipulated area will be deemed as
not in accordance with the intended purpose. The manufacturer accepts no liability for any damage resulting from improper use.
The servicing information contained in these operating instructions is intended
only for the use of qualified service engineers. An electric shock can be fatal. Do
not carry out any actions other than those described in the documentation. This
also applies to qualified personnel.
All cables and leads must be secured, undamaged, insulated and adequately dimensioned. Loose connections, scorched, damaged or inadequately dimensioned
cables and leads must be immediately repaired by authorised personnel.
Maintenance and repair work must only be carried out by an authorised specialist.
It is impossible to guarantee that bought-in parts are designed and manufactured to meet the demands made on them, or that they satisfy safety requirements. Use only original spare parts (also applies to standard parts).
Do not carry out any alterations, installations, or modifications to the device
without first obtaining the manufacturer's permission.
Components that are not in perfect condition must be changed immediately.
Copyright Copyright of these operating instructions remains with the manufacturer.
The text and illustrations are all technically correct at the time of printing. We
reserve the right to make changes. The contents of the operating instructions
shall not provide the basis for any claims whatsoever on the part of the purchaser. If you have any suggestions for improvement, or can point out any mistakes that you have found in the instructions, we will be most grateful for your
comments.
Data protection The user is responsible for the safekeeping of any changes made to the factory
settings. The manufacturer accepts no liability for any deleted personal settings.
5
General
Device description
Symbols on the
device
The Fronius Smart Meter is a bidirectional electricity meter which optimises selfconsumption and records the household's load curve. In conjunction with the
Fronius inverter, Fronius Datamanager and Fronius data interface, the Fronius
Smart Meter provides a clear overview of a user's own power consumption.
The meter measures the power flow to the loads or to the grid and forwards the
information via the Modbus RTU/RS485 communication to the Fronius inverter.
CAUTION!
Observe and follow safety instructions!
Failure to observe the safety instructions will result in damage to personnel and
equipment.
Switch off the power supply before establishing a mains connection.
▶
Observe the safety instructions.
▶
Technical data, markings and safety symbols are located on the Fronius Smart
Meter. These must not be removed nor painted over. The notices and symbols
warn of incorrect operation that could result in serious injury and damage to
property.
Symbols on the rating plate:
CE mark
The devices conform to all the requisite and relevant standards and
guidelines that form part of the relevant EU directive, and are therefore
permitted to display the CE mark.
Regulatory Compliance Mark (RCM)
Complies with all applicable regulatory requirements in Australia and
New Zealand regarding safety and electromagnetic compatibility, as
well as specific requirements for radio equipment.
WEEE mark
In accordance with European Directive 2012/19/EU on waste electrical
and electronic equipment and its implementation in national law, used
electrical devices must be collected separately and recycled in an environmentally responsible manner. Ensure that you return your used
device to your dealer or obtain information regarding a local, authorised
collection and disposal system. Failure to comply with this EU Directive
may result in a negative impact on the environment and your health!
Positioning The Fronius Smart Meter can be installed at two possible locations in the system:
at the feed-in point and at the consumption point.
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Placement at the feed-in point
Fronius Smart Meter located at the feed-in point.
Placement at the consumption point
Fronius Smart Meter located at the consumption load.
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Installation
Checklist for installation
For installation information, see the following chapters:
Switch off the power supply before establishing a mains connection.
1
Mount the Fronius Smart Meter (see Installation on page 8).
2
Connect automatic circuit breakers or automatic circuit breakers and discon-
3
nectors (see Protective circuit on page 8).
Connect the mains cable to the Fronius Smart Meter (see Cabling on page
4
9).
Mount the current transformers on the conductors. Make sure that the cur-
5
rent transformers are pointing in the correct direction. An arrow either points
to the load or the source (public grid) (see Connecting the current trans-
formers on page 12).
Connect the current transformer and Fronius Smart Meter (see Connecting
6
the current transformers on page 12).
Make sure that the current transformer phases match the mains voltage
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phases (see Connecting the current transformers on page 12).
Note down the nominal current of the current transformer for each meter.
8
These values will be required during setup.
Connect the output terminals of the Fronius Smart Meter to the Fronius in-
9
verter (see Connecting the data communication cable to the inverter on
page 13).
If necessary, set terminating resistors (see Terminating resistors on page
10
14).
Tug on each wire and plug to make sure that they are securely connected to
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the terminal blocks.
Switch on the power supply to the Fronius Smart Meter.
12
Check the firmware version of the Fronius inverter. To ensure compatibility
13
between the inverter and the Fronius Smart Meter, the software must always
be kept up to date. The update can be started via the inverter web page or
using Solar.web.
Set the transformation ratio of the current and voltage transformers (see
14
Setting the transformation ratio of the current and voltage transformers on
the Fronius Smart Meter on page 16).
If several Fronius Smart Meters are installed in the system, set the address
15
(see "Setting the address" under Setting the address of the Fronius Smart
Meter on page 21).
Configure and commission the meter (see Start-up on page 25).
16
Installation The Fronius Smart Meter can be mounted on a 35 mm DIN rail. The housing
comprises 4 DUs (division units, max. 72 mm).
Protective circuit
The Fronius Smart Meter is a hard-wired device and requires a disconnecting
device (circuit breaker, switch or disconnector) and overcurrent protection (automatic circuit breaker).
The Fronius Smart Meter consumes 10 - 30 mA. The nominal capacity of the disconnecting devices and the overcurrent protection is determined by the wire
thickness, the mains voltage and the required breaking capacity.
8
Disconnecting devices must be mounted within sight and as close as possible
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to the Fronius Smart Meter; they must also be easy to use.
The disconnecting devices must satisfy the requirements of IEC 60947-1
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and IEC 60947-3, as well as all national and local regulations for electrical
systems.
Use overcurrent protection rated for max. 63 A.
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To monitor more than one mains voltage, use connected automatic circuit
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breakers.
The overcurrent protection must protect the mains terminals marked L1, L2
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and L3. In rare cases, the neutral conductor has an overcurrent protection
which must simultaneously interrupt neutral and unearthed lines.
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Cabling
WARNING!
Danger from mains voltage.
An electric shock can be fatal.
Switch off the power supply before connecting the mains voltage inputs to
▶
the Fronius Smart Meter.
IMPORTANT!
Do not install more than one cable per screw terminal. If necessary, use terminal
blocks. The measuring inputs of the current transformers must be earthed on
one side as shown in the circuit diagram.
Connection cross-section:
Wire (rigid): min. 0.05 mm² / max. 4 mm²
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Wire (flexible): min. 0.05 mm² / max. 2.5 mm²
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Recommended torque: 0.5 Nm / max. 0.8 Nm
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Connect each voltage cable to the terminal strip as shown in the graphics below.
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10
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Selection criteria for current
transformers
General
Do not use current transformers with a voltage output.
Current transformers are directional. If they are mounted backwards or with
swapped wires, the measured power will be negative.
Primary current
Maximum current per phase. A current transformer with a primary current greater than the maximum expected current per phase should be selected. The closer
the expected current is to this value, the more precise the measurement will be.
Secondary current
The current transformer must supply alternating current at a nominal current of
1 or 5 A. The nominal values for the current transformer are listed in the current
transformer data sheet.
Power
The Fronius Smart Meter needs 0.3 VA to carry out its measurements. Losses
also occur on the outgoing and return leads. The power of the current transformer must be greater than the sum total of the power of the Fronius Smart
Meter and the leads. The higher the power, the better.
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