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 network
(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 letture
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 accordance 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 accordance
with the country setting Italy ;
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
⑦
and
⑨
under
8
1
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.
EN
747,431 | Z09.2 | 18/02/2016
26
Содержание coolcept StecaGrid 1500
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