User Manual For DATCOM Components

15
Com Cards
(continued)
Com Cards are responsible for powering DATCOM components. The
integrated power supply of these Com cards is implemented via special
contacts in the slot, which continue to supply power even when there is no
power from the photovoltaic modules.
Com cards version 1.7 and higher are equipped with a switched-mode
power supply and can be used with several supply voltages (208 V / 220
V / 230 V / 240 V / 277 V).
One Com card can supply three additional DATCOM components or one
additional DATCOM component if it is located in a Datalogger Web. Be-
cause the power is supplied via the data cable, the DATCOM components
in an external housing are also supplied.
NOTE When using more than 12 Fronius IG or Fronius IG Plus
devices in a system, the power supply can be deactivated for
individual Com cards to decrease the power consumption for the
DATCOM.
- This can be done by removing the AC fuse (MST 315 mA / 250
V - see figure) or the jumper for every second Com card.
- Make sure that the powered Com cards are equally distributed
in all phases.
NOTE Once cabling and installation of system components is
complete, including the network connection to all Fronius IG or
Fronius IG Plus devices, the green LED should light up on all
SolarNet clients. If this is not the case:
- Check cable connections
- Check that all Fronius IG or Fronius IG Plus devices are con-
nected to the network
Important Once the power has been turned on, the Com card requires
approx. 10 s until the green LED lights up.
If the green LED is not lit for individual system components:
- Plug another power pack into the corresponding DATCOM component