Fronius Smart Meter 240V-3 UL Manual De Instrucciones página 14

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 measured 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 data Fronius SnapINveter:
communication
Connect the data communication ports of the Fronius Smart Meter to the Froni-
cables to invert- us system monitoring in the inverter. Several Smart Meters can be installed in the
ers system, see chapter
Fronius GEN24 inverter:
Connect the data communication ports of the Fronius Smart Meter to the Mod-
bus interface of the Fronius GEN24 inverter. Several Smart Meters can be in-
stalled in the system, see chapter
on page
14
Multi meter system - Fronius SnapINverter
Fronius
SnapINverter
Tx Rx GND
-
- +
-
D- D+
21
Fronius
GEN24
Tx Rx GND
GND M1+ M1-
- +
-
D- D+
Connect D- to D-.
1
Connect D+ to D+.
2
Connect - to -.
3
D-
D+
Multi meter system - Fronius GEN24 inverter
Connect D- to M1-.
1
Connect D+ to M1+.
2
Connect - to GND.
3
on page 19