Terminating Resistors - Explanation Of Symbols - Fronius TS 65A-3 Operating Instructions Manual

IMPORTANT!
More information on successful commissioning.
Note the following information about connecting the data communication cable
to the inverter.
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Terminating res-
istors - Explana-
tion of symbols
20
Use network cables of type CAT5 or higher.
Use a mutual twisted cable pair for corresponding data lines (D+/D-, M1+/
M1-).
If the data lines 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 data lines when they are close to bare con-
ductors.
Use shielded twisted pair cables to avoid faults.
Two wires can be installed in each terminal; the wires are twisted first, inser-
ted into the terminal and tightened.
Note: A loose wire can disable an entire area of the network.
The data communication connections of the Fronius Smart Meter TS are
electrically isolated from hazardous voltages.
Inverter in the system
e. g. Fronius Symo
Meter - Fronius Smart Meter TS
Terminating resistor R 120 Ohm is set with a wire jumper between
M- and T.
Modbus RTU slave
e. g. Fronius Ohmpilot, Fronius Solar Battery, etc.
Terminating resistor
R 120 Ohm
To avoid interference, the terminating
resistor must be used (see chapter
Connecting the terminating resistor
on page 21).