Fronius Eco 25.0-3-S, Руководство по эксплуатации

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Explanation of
the multifunction
current interface
Various wiring variants can be connected to the multifunction current interface. However,
these cannot be operated simultaneously. For example, if an S0 meter is connected to the
multifunction current interface, it is not possible to connect a signal contact for the surge
protection device (or vice versa).
Pin 1 = measurement input: max. 20 mA, 100 Ohm measurement resistor (load imped -
ance)
Pin 2 = max. short circuit current 15 mA, max. open circuit voltage 16 V DC or GND
Wiring diagram variant 1: Signal contact for surge protection device
Depending on the setting in the Basic menu (Signal Input submenu), the DC SPD option
(surge protection device) either outputs a warning or an error on the display. Further infor -
mation on the DC SPD option can be found in the Installation Instructions.
Wiring diagram variant 2: S0 meter
A meter for recording the self-consumption of each S0 can be connected directly to the in -
verter. This S0 meter can be positioned directly at the feed-in point or in the consumption
branch. As one of the settings on the Fronius Datamanager website, a dynamic power re -
duction can be set under the "EVU Editor" menu item (see Fronius Datamanager 2.0 Op -
erating Instructions on our website www.fronius.com)
IMPORTANT! In order to connect an S0 meter to the inverter, it may be necessary to up -
date the inverter firmware.
Requirements for the S0 meter:
- Must comply with the IEC62053-31 Class B standard
- Max. voltage 15 V DC
- Max. current when ON 15 mA
- Min. current when ON 2 mA
- Max. current when OFF 0.15 mA
Recommended max. pulse rate of the S0 meter:
PV output kWp [kW] Max. pulse rate per kWp
30 1000
20 2000
10 5000
≤ 5.5 10,000
Pin 1 Pin 2
Pin 1
Pin 2 S0 +
S0 -