FRO­NIUS Smart Meter 240V-3 UL User manual

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Fronius Smart Meter 240V-3 UL
Fronius Smart Meter 480V-3 UL
Fronius Smart Meter 600V-3 UL
EN-US
Operating instructions
System monitoring
ES
Manual de instrucciones
Monitorización de instalaciones
FR
Instructions de service
Surveillance de l'installation
42,0410,2289 007-18082020
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Table of contents
Safety rules 4
Explanation of Safety Instructions 4
General 4
Environmental conditions 5
Qualified personnel 5
Copyright 5
Data backup 5
FCC / RSS Compliance 5
Warning notices on the device 6
Installation 7
Installation Checklist 7
Mounting 7
Circuit Protection 8
Line Wiring 8
Connect Current Transformers 11
CT Wiring 12
Connecting the Data Communication Signals to the Fronius Inverter 12
Set the address of the Fronius Smart Meter 12
Terminating Resistors 13
Set Baud Rate 14
Configuration Web Interface 15
Multi-meter system - Explanation of symbols 15
Multi-meter system 16
Operation 17
Power Status LEDs 17
Modbus Communication LEDs 18
Technical data 19
Accuracy 19
Measurement 19
Models and Electrical 19
Certifications 20
Environmental 20
Mechanical 21
Fronius manufacturer's warranty 21
3
EN-US

Safety rules
Explanation of
Safety Instruc-
tions
DANGER!
Indicates an immediate danger.
▶Death or serious injury may result if appropriate precautions are not taken.
WARNING!
Indicates a possibly dangerous situation.
▶Death or serious injury may result if appropriate precautions are not taken.
CAUTION!
Indicates a situation where damage or injury could occur.
▶Minor injury or damage to property may result if appropriate precautions are not
taken.
NOTE!
Indicates the possibility of flawed results and damage to the equipment.
General The device has been manufactured using state-of-the-art technology and according to
recognized safety standards. If used incorrectly or misused, however, it can cause
- serious or fatal injury to the operator or a third party,
- and damage to the device and other material assets belonging to the operating com-
pany.
All persons involved in start-up operation, 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 kept on hand wherever the device is being
used. In addition to the Operating Instructions, all applicable local rules and regulations
regarding accident prevention and environmental protection must also be followed.
All safety and danger notices on the device
- must be kept in a legible state
- must not be damaged/marked
- 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 risk of
- serious or fatal injury to the operator or a third party,
- and damage to the device and other material assets belonging to the operating com-
pany.
Any safety devices that are not functioning properly must be repaired by an authorized
specialist before the device is switched on.
4

Never bypass or disable protection devices.
For the location of the safety and danger notices on the device, refer to the section
headed “General” in the Operating Instructions for the device.
Any equipment malfunctions which might impair safety must be remedied immediately
before the device is turned on.
Your personal safety is at stake!
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 under-dimensioned cables and leads
must be repaired immediately by an authorized specialist.
Maintenance and repair work must only be carried out by an authorized specialist.
It is impossible to guarantee that externally (aka, third-party) procured 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.
Text and illustrations were accurate at the time of printing. Fronius reserves 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 Operating
Instructions, we will be most grateful for your comments.
Data backup The user is responsible for backing up any changes made to the factory settings. The
manufacturer accepts no liability for any deleted personal settings.
FCC / RSS Com-
pliance
FCC
This device corresponds to the limit values for a digital device of class B in accordance
with Part 15 of the FCC regulations. The limit values should provide adequate protection
against harmful interference in homes. This device creates and uses high frequency
energy and can interfere with radio communications when not used in accordance with
the instructions. However, there is no guarantee against interference occurring in a par-
ticular installation.
If this device interferes with radio or television reception when turning the device on and
5
EN-US

off, it is recommended that the user solve this with one or more of the following meas-
ures:
- adjust or reposition the receiving antenna
- increase the distance between the device and the receiver
- connect the device to another circuit, which does not include the receiver
- for further support, please contact the retailer or an experienced radio/TV technician.
Industry Canada RSS
The device corresponds to the license-free Industry Canada RSS standards. Operation
is subject to the following conditions:
(1) The device may not cause harmful interference
(2) The device must accept any interference received, including interference that may
cause undesired operation.
Warning notices
on the device Safety symbols:
To avoid electric shocks:
- Do not dismantle or modify the device
- Do not allow any water to enter the device
- Do not allow any foreign substances or material to enter the device
- Do not touch any connections directly
RCM Symbol - The product complies with the Australian laws.
6

Installation
Installation
Checklist
See the sections referenced below for installation details.
1Turn off power before making line voltage connections.
2Mount the Fronius Smart Meter (see Mounting on page 7).
3Connect circuit breakers or fuses and disconnects (see Circuit Protection on page
8).
4Connect the line voltage wires to the meter‘s terminal block (see Line Wiring on
page 8).
5Mount the Current Transformers (CTs) around the line conductors. Make sure the
CTs face the correct direction. An arrow might indicate either the load or the source
(public grid) (see Connect Current Transformers on page 11).
6Connect the twisted white and black wires from the CTs to the terminal block on the
meter, matching the wire colors to the white and black dots on the meter label (see
CT Wiring on page 12).
7Check that the CT phases match the line voltage phases (see Connect Current
Transformers on page 11).
8Record the CT rated current for each meter, because it will be required during setup.
9Connect the output terminals of the Fronius Smart Meter to the monitoring equip-
ment (see Connecting the Data Communication Signals to the Fronius Inverter
on page 12).
10 If necessary set terminating resistors (see Terminating Resistors on page 13).
11 Check that all the wires and plugs are securely installed in the terminal blocks by
tugging on each wire.
12 Turn on the power to the Smart Meter.
13 Verify that the LEDs indicate correct operation. If there is a consumption of power
and all generated power sources are turned off, then the LEDs from the used phases
should flash green (see Power Status LEDs on page 17).
14 Check your Fronius System monitoring software. In order to ensure compatibility
between the inverter and the Smart Meter, software must always be kept up-to-date.
The update can be started via the inverter website or via Solar.web.
15 Set CT-Ratio and Grid Type on the web interface of the Fronius Datamanager in Set-
tings - Meter - Settings (see Configuration Web Interface on page 15).
Mounting The Fronius Smart meter has two mounting holes spaced 5.375 in. (137 mm) apart (cen-
ter-to-center). These mounting holes are normally obscured by the detachable screw ter-
minals. Remove the screw terminals to mark the hole positions and mount the meter.
Self-tapping sheet metal screws are included. Do not over-tighten the screws, as long-
term stress on the case can cause cracking.
7
EN-US

Circuit Protection The Fronius Smart Meter is considered “permanently connected equipment“ and
requires a disconnect means (circuit breaker, switch or disconnect) and overcurrent pro-
tection (fuse or circuit breaker).
The Fronius Smart Meter only draws 10-30 mA, so the rating of any switches, discon-
nects, fuses and / or circuit breakers is determined by the wire gauge, the mains voltage
and the current interrupting rating required.
- The switch, disconnect or circuit breaker must be within sight and as close as prac-
ticable to the Fronius Smart Meter and must be easy to operate.
- Use circuit breakers or fuses rated for 20 amps or less.
- Use ganged circuit breakers when monitoring more than one line voltage.
- The circuit breakers or fuses must protect the mains terminals labeled L1, L2 and
L3. In the rare cases where neutral has overcurrent protection, the overcurrent pro-
tection device must interrupt both neutral and ungrounded conductors simultan-
eously.
- The circuit protection / disconnect system must meet IEC 60947-1 and IEC 60947-3,
as well as all national and local electrical codes.
Line Wiring - Always turn off power before connecting the line voltage inputs to the Fronius Smart
Meter.
- For the line voltage wires, 16 to 12 AWG stranded wire, type THHN, MTW or THWN,
600 V are recommended.
- Do not place more than one wire per screw terminal; use separate wire nuts or ter-
minal blocks if needed.
- Verify that the line voltages match the line-to-line and line-to-neutral values printed in
the white box on the front label.
Connect each conductor to the appropriate phase; also connect ground and neutral (if
applicable). The neutral connection “N“ is not required on delta models but we recom-
mend connecting it to ground if neutral is not present.
The screw terminal can handle wire up to 12 AWG. Connect each voltage line to the
green terminal block as shown in the following figures. After the voltage lines have been
connected, make sure both terminal blocks are fully seated in the Fronius Smart Meter.
8

When power is first applied, check that the LEDs behave normally. If you see LEDs flash-
ing red-green-red-green, the voltage is too high for this model, so disconnect the power
switch immediately!
Single-Phase Three-Wire (Mid-Point Neutral) (only 240 V-3)
Two-Phase (Australia) (only 480 V-3)
Single-Phase Two-Wire without Neutral (only 240 V-3 and 480 V-3)
9
EN-US

Single-Phase Two-Wire with Neutral
Three-Phase Four-Wire Wye
Three-Phase Three-Wire Delta without Neutral (only 240 V-3 and 480 V-3)
10

Three-Phase Four-Wire Stinger
Three-Phase Two-Wire Corner Grounded Delta (only 240 V-3 and 480 V-3)
Connect Current
Transformers
The current transformer must generate 333.33 millivolts AC at rated current. See the cur-
rent transformer data sheets for CT ratings.
- Do not use ratio or current output such as 1 amp or 5 amp output models!
- See the CT data sheets for the maximum input current ratings.
- Be careful to match the CTs with the voltage phases. Make sure the CT L1 is meas-
uring the current on the same phase being monitored by the L1 voltage input and
the same for phases L2 and L3. Use the supplied colored labels or colored tape to
identify the CT leads.
- To minimize current measurement noise, avoid extending the CT wires, especially in
noisy environments. If it is necessary to extend the wires, use twisted pair cable 22
to 14 AWG, rated for 300 V or 600 V (not less than the service voltage) and shielded
if possible
- Make sure the CTs face the correct direction. An arrow might indicate either the load
or the source (public grid)
- If you see strange readings on unused phases, jumper the unused CT inputs: for
each unused CT, connect a short cable from the terminal marked with a white dot to
the terminal marked with a black dot.
11
EN-US

Install the CTs around the conductor to be measured and connect the CT leads to the
Fronius Smart Meter. Always turn off power before disconnecting any live conductors.
Put the line conductors through the CTs as shown in the previous section.
CTs are directional. If they are mounted backwards or with their white and black wires
swapped the measured power will be negative. The status LEDs indicate negative meas-
ured power by flashing red.
Split-core CTs can be opened for installation around the conductor. A nylon cable tie may
be secured around the CT to prevent inadvertent opening.
CT Wiring The current transformers connect to the six position black screw terminal block. Connect
the white and black CT wires to the Fronius Smart Meter terminals marked CT L1, CT L2
and CT L3. Excess length may be trimmed from the wires if desired. Connect each CT
with the white wire aligned with the white dot on the label and the black wire aligned with
the black dot. Note the order in which the phases are connected, as the line voltage
phases must match the current phases for accurate power measurement.
Connecting the
Data Communica-
tion Signals to
the Fronius
Inverter
Connect the Data Communication Terminal from the Fronius Smart Meter to the Fronius
Inverter
- D+ to D+
- D- to D-
- - to -
Fronius Inverter
- The Fronius Solar Meter outputs are electrically isolated from dangerous voltages.
- If the output wiring is near line voltage wiring, use wires or cables with a 300 V or
600 V rating (never less than the service voltage).
- If the output wiring is near bare conductors, it should be double insulated or jack-
eted.
- You may install two wires into each screw terminal by twisting the wires together,
inserting them into the terminal and tightening them securely. Note: a loose wire can
disable an entire network section.
- Use shielded twisted-pair cable to prevent interference. If there is no common con-
ductor, connect the shield to the - (respectively C) terminal.
- Shielded 24 AWG CAT 5 cable or higher is acceptable.
Set the address
of the Fronius
Smart Meter
The Fronius Smart Meter must be connected to the Fronius Datamanager. If only one
Fronius Smart Meter is installed, the Modbus Address is 1.
DIP Switch 1 2 3 4 5 6 7 8
Up (1) value 1 2 4 8 16 32 R
120
Ohm
Baud
Rate
Examples
Modbus Adress 1
DIP Switch 1 2 3 4 5 6
Position 1 0 0 0 0 0
12

Modbus Adress 2
DIP Switch 1 2 3 4 5 6
Position 0 1 0 0 0 0
Modbus Adress 3 (value 1 + 2 = 3)
DIP Switch 1 2 3 4 5 6
Position 1 1 0 0 0 0
Modbus Adress 4
DIP Switch 1 2 3 4 5 6
Position 0 0 1 0 0 0
Modbus Adress 7 (value 1 + 2 + 4 = 7)
DIP Switch 1 2 3 4 5 6
Position 1 1 1 0 0 0
Modbus Adress 20 (value 4 + 16 = 20)
DIP Switch 1 2 3 4 5 6
Position 0 0 1 0 1 0
Terminating Res-
istors
The system might work without terminating resistors. Due to interferences, the use of ter-
minating resistors according to the following schemes are recommended.
Activate the Fronius Smart Meter terminat-
ing resistor (R 120 Ohm) by switching pin
7 to ON (1).
13
EN-US

*) Terminating resistor R 120 Ohm is supplied with the device
**) e.g. Fronius Ohmpilot, Fronius Solar Battery
Set Baud Rate Select the baud rate by setting DIP switch position 8 (see below). The change will take
effect immediately.
The Fronius Smart Meter supports programmatic baud rates up to 115200.
Baud Rate DIP Switch 8
9600 (default) 0 (OFF)
38400 (default) 1 (ON)
14

Configuration
Web Interface
1Go to the web interface of the Fronius Datamanager in Settings - Meter - Settings
2Select “Fronius Smart Meter“
3Click “Settings“
4Set Location of the meter, CT-Ratio and Grid Type
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.
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.
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.
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.
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.
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
15
EN-US

Terminating resistor
R 120 Ohm
Multi-meter sys-
tem
If several Fronius Smart Meters are installed in the system, a separate address must be
set for each meter. The primary meter is always assigned address 1. All the other meters
are numbered consecutively with the address range from 2 to 14. Different types of
Fronius Smart Meters can be used in combination.
Location of the primary meter in the consumption branch
Location of the primary meter at the feed-in point
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 any other Modbus device must be on different channels.
- The remaining Modbus nodes must be distributed equally.
16

Operation
Power Status
LEDs
The three status LEDs on the front of the Fronius Smart Meter can help indicate correct
measurements and operation. The “L1”, “L2”, and “L3” on the diagrams indicate the three
phases:
Normal Startup
The Fronius Smart Meter displays the following startup sequence whenever power is first
applied.
Consuming Power
Any phase with the LEDs flashing green is indicating normal positive power (Import of
energy from public grid).
If the inverter or any other power source is not producing power and some minimal
power is being used, the LEDs should be flashing green. This is normal, when the
inverter is in its 5 minute startup cycle.
No Power
Any phase with a solid green LED indicates no power, but line voltage is present.
No Voltage
Any phase LED that is off indicates no voltage on that phase.
Generating Power
Red flashing indicates negative power for that phase. This is a normal behavior if more
power is produced (by the inverter or any other power source) than consumed (Export of
energy to the public grid). If no power is produced at all, this might indicate either
reversed CT's, swapped CT wires or CT's are not matched with the correct line voltage
phase.
Overvoltage Warning
The following indicates that the line voltage is too high for this model. Disconnect power
immediately! Check the line voltages and the meter ratings (in the white box on the
label).
17
EN-US

Meter Not Operating
If none of the LEDs are illuminated, check that the correct line voltages are applied to the
meter. If the voltages are correct, call customer service for assistance.
Error
If the meter experiences an internal error, all LEDs will light up red for 3 or more
seconds. If you see this happen repeatedly, call customer service for assistance.
Modbus Commu-
nication LEDs
Near the upper left corner, there is a diagnostic Com (communication) LED that can
indicate the following:
A short green flash indicates a valid packet addressed to this
device.
Short yellow flashes or rapid flashing indicate valid packets
addressed to different devices.
A one-second red flash indicates an invalid packet: bad baud
rate, bad CRC, noise, bad parity, etc.
Rapid red/yellow flashing indicates a possible address con-
flict (two devices with the same DIP switch address).
Solid red indicates the address is set to zero: an invalid
choice.
18

Technical data
Accuracy Normal Operation
Line voltage: -20% to +15% of nominal
Power factor: 1.0
Frequency: 48 - 62 Hz
Ambient Temperature: 23° C ± 5° C
CT Current: 5% - 100% of rated current
Accuracy: ± 0.5% of reading
Measurement Update Rate: 0.1 second. Internally, all measurements are performed at this rate.
Startup Time: ~1.0 second. The Fronius Smart Meter starts communicating this long
after AC voltage is applied. Energy measurement starts 50-100 milliseconds after AC is
applied.
Default CT Phase Angle Correction: 0.0 degrees.
Models and Elec-
trical Meter Service
Type
Nominal Vac
Line-to-Neutral
Nominal Vac
Line-to-Line
Phases Wires
240V-3 UL 120 208-240 1 - 3 2 - 4
480V-3 UL 277 480 1 - 3 2 - 4
600V-3 UL 347 600 1 - 3 2 - 4
The Fronius Smart Meter has an optional neutral connection that may be used for meas-
uring wye circuits. In the absence of neutral, voltages are measured with respect to
ground. The Fronius Smart Meter uses the phase L1 (øA) and phase L2 (øB) connec-
tions for power.
Over-Voltage Limit: 125% of nominal Vac. Extended over-voltage operation can dam-
age the Fronius Smart Meter and void the warranty.
Over-Current Limit: 120% of rated current. Exceeding 120% of rated current will not
harm the Fronius Smart Meter but the current and power will not be measured accur-
ately.
Maximum Surge: 4 kV according to EN 61000-4-5
Power Consumption: The following table shows maximum volt-amperes, the power
supply ranges, typical power consumption, and typical power factors with all three
phases powered at nominal line voltages. The power supply consumes most of the total
power, while the measurement circuitry draws 1-10% of the total (6-96 milliwatts per
phase, depending on the model). Due to the design of the power supply, the Fronius
Smart Meter draws slightly more power at 50 Hz.
Meter
Service
Type
Real
Power
(60 Hz)
Real
Power
(50 Hz)
Powe
r
Facto
r (50
Hz)
Rated
VA *)
Power Supply
Range (Vac)
Power Sup-
ply Termin-
als
240V-3
UL
1.2 W 1.5 W 0.70 4 VA 166 - 276 L1 and L2
480V-3
UL
1.2 W 1.6 W 0.70 3 VA 384 - 552 L1 and L2
19
EN-US

Meter
Service
Type
Real
Power
(60 Hz)
Real
Power
(50 Hz)
Powe
r
Facto
r (50
Hz)
Rated
VA *)
Power Supply
Range (Vac)
Power Sup-
ply Termin-
als
600V-3
UL
1.0 W 1.3 W 0.76 3 VA 278 - 399 N and L1
*) The Rated VA is the maximum at 115% of nominal Vac at 50 Hz. This is the same as
the value that appears on the front label of the Fronius Smart Meter.
Maximum Power Supply Voltage Range: -20% to +15% of nominal (see table above).
For the 3D-240 service, this is -20% of 208 Vac (166 Vac) to +15% of 240 Vac (276 Vac).
Operating Frequencies: 50 / 60 Hz
Measurement Category: CAT III
Measurement category III is for measurements performed in the building installation.
Examples are measurements on distribution boards, circuit breakers, wiring, including
cables, bus bars, junction boxes, switches, socket outlets in the fixed installation, and
equipment for industrial use and some other equipment, for example, stationary motors
with permanent connection to the fixed installation.
The line voltage measurement terminals on the meter are rated for the following CAT III
voltages (these ratings appear on the front label):
Meter Service Type CAT III Voltage Rating
240V-3 UL 120
480V-3 UL 277
600V-3 UL 600
Current Transformer Inputs:
Nominal Input Voltage (At CT Rated Current): 0.33333 Vac RMS
Absolute Maximum Input Voltage: 5.0 Vac RMS
Input Impedance at 50/60 Hz: 23 kOhm
Certifications Safety: UL 61010-1, CAN/CSA-C22.2 No. 61010-1-04, IEC 61010-1
Immunity: EN 61326: 2002 (Industrial Locations)
Electrostatic Discharge: EN 61000-4-2
Radiated RF Immunity: EN 61000-4-3
Electrical Fast Transient / Burst: EN 61000-4-4
Surge Immunity: EN 61000-4-5
Conducted RF Immunity: EN 61000-4-6
Voltage Dips, Interrupts: EN 61000-4-11
Emissions: FCC Part 15, Class B, EN 55022: 1994, Class B
Environmental Operating Temperature: -30° C to +75° C (-22° F to 167° F)
Altitude: Up to 2000 m (6560 ft)
Operating Humidity: non-condensing, 5 to 90% relative humidity (RH) up to 40°C,
decreasing linearly to 50% RH at 55°C
Pollution: POLLUTION DEGREE 2 - Normally only non-conductive pollution; occasion-
ally, a temporary conductivity caused by condensation must be expected.
Indoor Use: Suitable for indoor use
Outdoor Use: Suitable for outdoor use if mounted inside an electrical enclosure (Ham-
mond Mfg., Type EJ Series) rated NEMA 3R or 4 (IP 66).
20