FRO­NIUS Smart Meter 50kA-3 User manual

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Fronius Smart Meter 50kA-3
EN
Operating instructions
PV system monitoring
42,0426,0280,EN 006-19082020
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Contents
Safety rules 4
General 4
Environmental conditions 4
Qualified personnel 4
Copyright 5
Data protection 5
General 6
Explanation of safety notices 6
Description of the device 6
Symbols on the device 6
Positioning 7
Installation 8
Checklist for installation 8
Installation 8
Protective circuit 8
Cabling 9
Selection criteria for current transformer 11
Connecting the current transformers 12
Suitable voltage transformers 12
Connecting the data communication cable to the inverter 12
Terminating resistors 13
Setting the transformation ratio of the current and voltage transformers on the Smart Meter 14
Multi-meter system - Explanation of symbols 15
Multi-meter system 16
Setting the address of the Fronius Smart Meter 17
Configuring the web interface 18
Operation 20
Menu structure 20
Technical data 21
Technical data 21
Fronius manufacturer's warranty 24
3
EN

Safety rules
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
- Damage to the device and other material assets belonging to the operating com-
pany.
All personnel involved in commissioning, maintenance, and servicing of the device must:
- Be suitably qualified
- Have knowledge of and experience in dealing with electrical installations and
- Have fully read and precisely followed these Operating Instructions
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 protec-
tion.
All safety and danger notices on the device:
- Must be kept in a legible state
- Must not be damaged
- Must not be removed
- Must not be covered, pasted or painted over
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
- Damage to the device and other material assets belonging to the operating company
Any safety devices that are not fully functional must be repaired by an authorised spe-
cialist 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!
Environmental
conditions
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.
Qualified person-
nel
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 quali-
fied personnel.
All cables and leads must be secured, undamaged, insulated and adequately dimen-
sioned. Loose connections, scorched, damaged or inadequately dimensioned cables and
leads must be immediately repaired by authorised personnel.
4

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 sugges-
tions for improvement, or can point out any mistakes that you have found in the instruc-
tions, 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
EN

General
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.
Description of the
device
The Fronius Smart Meter is a bidirectional electricity meter for optimising your own con-
sumption and recording the load curve of the household. Together with the Fronius
Datamanager, the Fronius Smart Meter provides a clear overview of your own electricity
consumption.
The meter measures the power flow to the loads or the grid and forwards the information
to the Fronius Datamanager via ModBus RTU/RS485 interface.
CAUTION!
Observe and follow the safety instructions!
Non-observance of the safety instructions will result in damage to persons and equip-
ment.
▶Switch off the power supply before making a grid connection.
▶Observe the safety instructions.
Symbols on the
device
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 dis-
play the CE mark.
6

Regulatory Compliance Mark (RCM)
Complies with all applicable regulatory requirements in Australia and New Zea-
land 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.
Placement at the feed-in point
Fronius Smart Meter located at the feed-in point.
00 1
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7
Placement at the consumption point
Fronius Smart Meter located at the consumption load.
00 1
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7
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EN

Installation
Checklist for
installation
For information about installation, please refer to the following sections:
1Switch off the power supply before establishing a mains connection
2Mount the Fronius Smart Meter (see Installation on page 8)
3Connect automatic circuit breakers or automatic circuit breakers and disconnectors
(see Protective circuit on page 8)
4Connect the mains cable to the Fronius Smart Meter (see Cabling on page 9)
5Mount the current transformers on the conductors. Make sure that the current trans-
formers are pointing in the correct direction. An arrow either points to the load or the
source (public grid) (see Connecting the current transformers on page 12)
6Connect the current transformer and Fronius Smart Meter (see Connecting the cur-
rent transformers on page 12)
7Make sure that the current transformer phases match the mains voltage phases (see
Connecting the current transformers on page 12)
8Note down the nominal current of the current transformer for each meter. These val-
ues will be required during setup.
9Connect the output terminals of the Fronius Smart Meter to the Fronius system mon-
itoring (see Connecting the data communication cable to the inverter on page
12)
10 If necessary, set terminating resistors (see Terminating resistors on page 13)
11 Tug on each wire and plug to make sure that they are securely connected to the ter-
minal blocks.
12 Switch on the power supply to the Fronius Smart Meter
13 Check the firmware version of the Fronius system monitoring. To ensure compatibil-
ity 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.
14 Set the transformation ratio of the current and voltage transformers (see Setting the
transformation ratio of the current and voltage transformers on the Smart
Meter on page 14)
15 If several Fronius Smart Meters are installed in the system, set the address (see
"Setting the address" under Setting the address of the Fronius Smart Meter on
page 17)
16 Set meter location via the Fronius system monitoring web interface under "Settings -
Meter - Settings" (see Configuring the web interface on page 18)
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 (cir-
cuit breaker, switch or disconnector) and overcurrent protection (automatic circuit
breaker).
The Fronius Smart Meter consumes 10 - 30 mA. The nominal capacity of the disconnect-
ing 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 to the
Fronius Smart Meter; they must also be easy to use.
- The disconnecting devices must satisfy the requirements of IEC 60947-1 and IEC
60947-3, as well as all national and local regulations for electrical systems.
- Use overcurrent protection rated for max. 63 A.
- To monitor more than one mains voltage, use connected automatic circuit breakers.
- The overcurrent protection must protect the mains terminals marked L1, L2 and L3.
In rare cases, the neutral conductor has an overcurrent protection which must simul-
taneously interrupt neutral and unearthed lines.
Cabling - Always switch off the power supply before connecting the mains voltage inputs to
the Fronius Smart Meter.
- Connection cross-section:
• Wire (rigid): min. 0.05 mm² / max. 4 mm²
• Wire (flexible): min. 0.05 mm² / max. 2.5 mm²
• Recommended torque: 0.5 Nm / max. 0.8 Nm
- Do not lay more than one cable per screw terminal. Use terminal blocks if neces-
sary.
The measuring inputs of the current transformers must be earthed on one side as shown
in the circuit diagram.
Connect each voltage line to the terminal strip as shown in the graphics below.
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EN

10

Selection criteria
for current trans-
former
General
Do not use current transformers with a voltage output.
Current transformers are directional. If they are mounted backwards or with reversed
wires, the measured power will be negative.
Primary current
Maximum current per phase. A current transformer is to be selected whose primary cur-
rent is higher than the maximum expected current per phase. The closer the expected
current is to this value, the more accurate the measurement.
Secondary current
The current transformer must supply 1 or 5 amps alternating current at nominal current.
The nominal data of the current transformer is stated in the current transformer data
sheet.
Power
The Fronius Smart Meter requires 0.3 VA to perform the measurement. In addition, there
are losses on the outgoing and return leads. The power of the current transformer must
be greater than the sum of the power of the Fronius Smart Meter and the leads. The
higher the power, the better.
Line resistances at different cross-sections (copper wires)
Secondary cur-
rent
[A]
Cross-section
[mm²]
Line resistances at different lead lengths
(outgoing and return lead)
0.5 m 1.0 m 2.5 m 5 m 10 m
5 1.5 0.3 VA 0.6 VA 1.5 VA 2.9 VA 5.8 VA
5 2.5 0.2 VA 0.4 VA 0.9 VA 1.8 VA 3.6 VA
5 4 - - 0.6 VA 1.1 VA 2.2 VA
Example
The length of the outgoing and return lead (0.5 m each) between the Fronius Smart
Meter and current transformer is 1 m in total and has a copper cable cross-section of 1.5
mm², so the line resistance is 0.6 VA according to the table above. The Fronius Smart
Meter's internal consumption is 0.3 VA.
Line resistance 0.6 VA + internal consumption 0.3 VA = 0.9 VA
→ A current transformer with an output of 1 VA, 1.5 VA, 5 VA or higher is suitable here.
Use accuracy class
1 or better (Cl. 0.5, Cl. 0.2, etc.). Class 1 corresponds to a deviation of ± 1% of the sec-
ondary current at maximum power.
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EN

Mounting
Rigid or hinged.
Rigid is usually less expensive and often has better performance and accuracy values.
Hinged current transformers can be opened for mounting on the conductor. To prevent
unintentional opening, a plastic cable tie can be attached to the current transformer.
Hinged current transformers can be installed in a system without interrupting the voltage.
Connecting the
current trans-
formers
- Make sure that the current transformers match the voltage phases.
Make sure that current transformer L1 measures the current on the same phase that
is monitored by voltage input L1. The same applies for phases L2 and L3.
- Make sure that the current transformers are pointing in the correct direction.
Observe the data sheet for the current transformer.
Attach the current transformers to the conductor to be measured and connect the current
transformer cables to the Fronius Smart Meter. Always switch off the power supply
before disconnecting live conductors.
The current transformers are connected to connections 1 and 3; 4 and 6; 7 and 9. If
necessary, excessively long cables can be shortened accordingly. Observe the sequence
in which the phases are connected. Accurate power measurement is only ensured if the
mains voltage phases match the current phases.
Suitable voltage
transformers
Suitable voltage transformers: Only voltage transformers with a voltage range of 210 to
440 V (phase-to-phase) may be used. The voltage transformers must be connected to
terminals 2, 5, 8 and 11 at the point of direct voltage measurement.
Connecting the
data communica-
tion cable to the
inverter
Connect the data communication connections of the Fronius Smart Meter to the Fronius
system monitoring in the inverter.
- Connect 35 (Fronius Smart Meter) to - (Fronius inverter)
- Connect 34 (Fronius Smart Meter) to D- (Fronius inverter)
- Connect 33 (Fronius Smart Meter TS) to D+ (Fronius inverter)
- Several Smart Meters can be installed in the system, see chapter Multi-meter sys-
tem on page 16
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ATTENTION! ?
More information on successful commissioning.
Note the following information about connecting the data communication cable to the
inverter.
▶Use cables of type CAT5 or higher.
▶Use a mutual twisted cable pair for data lines that belong together (D+ and D-).
▶If the output cables are close to the mains cabling, use wires or cables that are
designed for 300 to 600 V (never less than the operating voltage).
▶Use double-insulated or sheathed output cables when they are close to bare con-
ductors.
▶Use shielded twisted pair cables to avoid faults.
▶The outputs of the Fronius Smart Meter are electrically isolated from hazardous
voltages.
Terminating res-
istors
Due to interference, it is recommended that terminating resistors are used as illustrated
below to ensure proper functioning.
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EN

* The terminating resistor on Fronius Smart Meters is installed between 33 and 34. The
terminating resistor R 120 Ohm is included with the Fronius Smart Meter.
Setting the trans-
formation ratio of
the current and
voltage trans-
formers on the
Smart Meter
Only the transformation ratio of the current and voltage transformers must be set. All
other parameters have already been set in advance.
Password (0001):
+
Transformation ratio of the current transformers1) (0001 - 99992)):
+
1)
Transformation ratio of the voltage transformers1), 3) (001.0 - 500.02)):
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+
1)
Change (and remember!) password:
+
1)Important! Changing the transformation ratios will reset the counters in the Fronius
Smart Meter to 0.
2) Transformation ratio in the current transformer x Transformation ratio of the voltage
transformers = max. 1,000,000
3) Changeover only when using voltage transformers (direct voltage measurement Vt =
1)
Multi-meter sys-
tem - Explanation
of symbols
Grid
supplies the loads in the system if insufficient power is being generated
by the solar modules or supplied by the battery.
Inverter in the system
e. g. Fronius Primo, Fronius Symo, etc.
00 1
6
7
Utility meter
Measures the measurement data relevant for billing amounts of energy
(in particular kilowatt hours of energy sourced from the grid and energy
fed into the grid). Based on the relevant billing data, the electricity
retailer will invoice the energy sourced from the grid and the purchaser
of the surplus energy will reimburse the energy fed into the grid.
00 1
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7
1
Primary meter
Records the system's load curve and provides measurement data for
energy profiling in Fronius Solar.web. The primary meter also controls
the dynamic feed-in control.
00 1
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7
2
Secondary meter
Records the load curve of individual loads (e.g. washing machine,
lamps, TV, heat pump, etc.) in the consumption branch and provides
measurement data for energy profiling in Fronius Solar.web.
00 1
6
7
Producer meter
Records the load curve of individual producers (e.g. wind power plant) in
the consumption branch and provides measurement data for energy pro-
filing in Fronius Solar.web.
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EN

Loads in the system
e. g. washing machine, lamps, TV, etc.
Additional loads in the system
e. g. heat pump
Additional producers in the system
e. g. wind power plant
Terminating resistor
R 120 Ohm
Multi-meter sys-
tem
If several Fronius Smart Meters are being installed, a separate address (see Setting
the address of the Fronius Smart Meter page 17) must be set for each one. The
primary meter always has address 1, all other meters are numbered in the address
range from 2 to 14. Different types of Fronius Smart Meter can be used together.
00 1
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7
00 1
6
7
1
00 1
6
7
2
00 1
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7
2
00 1
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7
*
*Data communication
Position of the primary meter in the consumption branch. *Terminating resistor R 120 Ohm
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00 1
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7
00 1
6
7
1
00 1
6
7
2
00 1
6
7
2
00 1
6
7
*
*Data communication
Position of the primary meter at the feed-in point. *Terminating resistor R 120 Ohm
The following must be observed in a multi-meter system:
- Each Modbus address must only be assigned once.
- Terminating resistors must be positioned individually for each channel.
- The primary meter and the battery must be on different channels.
- The remaining Modbus nodes must be distributed equally.
Setting the
address of the
Fronius Smart
Meter
Symbol Name Event Function
Prog 1 x Increases the set value
Page 1 x Moves the cursor
+
Enter 1 x confirms the entry
1Press "Prog" and "Page" at the same
time to enter the code.
2Enter password "2633". Increase the
value with "Prog" and change to the
next digit with "Page".
3Press "Prog" and "Page" at the same
time again to switch to the menu item
"Addr" (address).
4Set the relevant address.
- Permissible values: 1 - 14
How to configure the address of the Fronius Smart Meter in the Fronius Dataman-
ager:
17
EN

1Go to the Fronius Datamanager website.
- Open the web browser.
- In the address field, enter the IP address (IP address for WLAN:
192.168.250.181, IP address for LAN: 169.254.0.180) or the host and domain
name of the Fronius Datamanager.
- The Fronius Datamanager website will be displayed.
2Click on "Settings".
3Select the secondary meter from the drop-down list.
Click "Add".
4Enter the name of the secondary meter under "Name".
Enter the previously assigned address under "Modbus address".
5Add meter description.
6Repeat the process for additional meters, if necessary.
Configuring the
web interface
Connect to the Fronius Datamanager via access point
1Activate the access point on the Datamanager.
2Connect to the Fronius_240.XXXXXX network.
3Go to the Fronius Datamanager website.
- Open IP address http://192.168.250.181.
Connect to the Fronius Datamanager via LAN
1Connect the Datamanager and computer to a LAN cable.
2Place the Datamanager IP switch in the 'A' position.
3Go to the Fronius Datamanager website.
- Open IP address http://169.254.0.180.
Configure the address of the Fronius Smart Meter in the Fronius Datamanager
1Go to the Fronius Datamanager website.
2Click on "Settings" (1).
3Set a service password under "Password".
4Click on "Meter" (2) in the menu (username: service, password see step 3).
5Select the meter from the drop-down list (3).
6Click on "Settings" (4) under primary meter.
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7Set the position of the meter – feed-in point (1) or consumption point (2) – in the pop-
up window. For more information on the position of the Fronius Smart Meter, see
Positioning on page 7.
8Click "OK" when the status OK is displayed. If the Timeout status is displayed,
repeat the procedure.
9Click on the checkmark in the upper right corner to save the settings.
10 The Fronius Smart Meter is fully configured and ready for use.
The "Current general view" menu item displays the power of the PV modules, self-con-
sumption, the energy fed into the grid and the battery charge (if available).
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EN

Operation
Menu structure A graphic view of the menu structure can be found in the User Information that is sup-
plied as standard.
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