User manual
Notice
If in the country setting Italy is set, then the RS485 bus must be connected as follows to
enable control through an external device in accordance with CEI 0-21.
– External fast switch-off (ital.: Teledistacco): If the lines 3
1)
and 8
1)
of the RS485 bus
2)
are
connected, e. g. via an external relay, the following applies:
Relay closes: The inverters on the bus disconnect themselves from the network.
Relay opens: The inverters connected on the network connect themselves to the net-
work (regular operation).
– Switch-over of the grid frequency disconnection thresholds (Ital.: Modalità definitiva di
funzionamento del sistema di protezione di interfaccia (impiego del SPI sulla base di let-
ture locali e di informazioni/comandi esterni)): If the lines 5
1)
and 8
1)
of the RS485 bus
2)
are connected, e. g. via an external relay, the following applies:
Relay closes: The inverters connected on the bus set the switch-off thresholds in accor-
dance with CEI 0-21 to 47.5 Hz and 51.5 Hz.
Relay opens: The inverters connected on the bus set the switch-off thresholds in accor-
dance with the country setting Italy ;
Ä
Chapter 9 „Technical data“ on page 80
We recommend that you integrate the wiring of lines 3, 5, and 8 in the bus termination.
1)
Contact assignment of the RJ45 plug for the RS485 bus: See Fig. 8.
2)
In this regard, see
⑥
under
Ä
Chapter 3.1 „Housing“ on page 13 and
⑦
and
⑨
under
Ä
Chapter 3.1 „Housing“ on page 13.
81
Fig. 8: Contact assignment (= line number) of the RJ45 plug
Optionally one (!) of the following masterdevices can be connected to the RS485 bus. The devices
support the transfer protocol used by the inverter.
n Energy management unit StecaGrid SEM: Interface to a ripple control receiver for EEC-com-
pliant feed-in management
n PC or notebook (with suitable software):
– Read inverter information using the "StecaGrid User" read out software. This is available on
our homepage see http://www.steca.com/index.php?StecaGrid_User_de
– Connection to the inverter via optional adapter RS485⇔USB is possible; the adapter is
available from Steca under Article Number 746.610 (IP21) or 737.707 (IP65).
– Load firmware updates (for technical professionals only)
n External data loggers, recommended by Steca for professional system monitoring:
– WEB‘log (Meteocontrol)
– Solar-Log (Solare Datensysteme)
– Energy-Manager (Kiwigrid GmbH)
EN
747.431 | Z09.3 | 2017-09-05
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