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Inserting Option Cards
Suitable Option 
Cards
There are several options and system upgrades available for the inverter, e.g.:
- Datalogger and modem interfaces (for using a PC to record and manage data from 
your photovoltaic system)
- Various large displays (public display)
- Actuators / relays / alarms (signal card)
System upgrades come in the form of plug-in cards. The inverter can be equipped with 
three option cards.
Safety
Inserting option 
cards into the 
Fronius IG Plus
WARNING! An electric shock can be fatal. Danger due to grid voltage and DC 
voltage from solar modules.
- The connection area should only be opened by a licensed electrician.
- Never work with live wires! Prior to all connection work, make sure that the 
AC and DC wires are not charged.
WARNING! An electric shock can be fatal. Danger from residual voltage from ca-
pacitors.
You must wait until the capacitors have discharged. Discharge takes 5 minutes.
NOTE! Follow general ESD precautions when handling option cards.
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