Ct Wiring; Set The Address Of The Fronius Smart Meter - Fronius Smart Meter 240V-3 UL Instructions De Service

Install the CTs around the conductor to be measured and connect the CT leads to the Fro-
nius 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 mea-
sured 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 Fronius Inverter Type 1
Data Communica- -
tion Signals to the
Fronius Inverter
Fronius Inverter Type 2
-
Fronius Inverter Type 1 and Type 2
-
-
-
-
-
-
Set the address of The Fronius Smart Meter must be connected to the Fronius Datamanager. If only one Fro-
the Fronius Smart nius Smart Meter is installed, the Modbus Address is 1.
Meter
DIP Switch
Up (1) value
Address
Position
14
Connect the Data Communication Terminal from the Fronius Smart Meter to the Fro-
nius Inverter
- D+ to D+
- D- to D-
- - to -
Connect the Data Communication Terminal from the Fronius Smart Meter to the Fro-
nius Inverter
- D+ to M1+
- D- to M1-
- - to GND
- Connect the shield of the cable to Shield
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 jacketed.
You may install two wires into each screw terminal by twisting the wires together, in-
serting them into the terminal and tightening them securely. Note: a loose wire can dis-
able an entire network section.
Use shielded twisted-pair cable to prevent interference. If there is no common conduc-
tor, connect the shield to the - (respectively C) terminal.
Shielded 24 AWG Cat5 cable or higher is acceptable.
1
1
1, Up
2 3 4
2 4 8
Modbus Address 1
0, Down 0, Down 0, Down 0, Down 0, Down
5 6
16 32