Steca coolcept3 - Page 25

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 dis-
connect 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 discon-
nection 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 ;
Ä Chapter 8 „Technical data“ on page 57.
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. 6.
2)
In this regard, see
⑥ under Ä Chapter 3.1.1
„coolcept
3
“ on page 11 and
⑦ and ⑨ under
Ä Chapter 3.1.2 „coolcept
3
-x“ on page 12.
81
Fig. 6: 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
. The devices support the transfer protocol used by the
inverter.
EN
750.661 | Z03 | 2016-09-12 25