Delta RPI M50A_120 - AC;DC Disconnection Switch; AC Connector (AC Output); DC Connectors (DC Inputs); Communication Port 1

15
Installation and Operation Manual for RPI M50A
4. Product overview
4.7.2 AC/DC disconnection switch
DISCONN AC/DC
OFF ON
The inverter is disconnected from the grid (AC) and
the solar modules (DC) when the AC/DC disconnec-
tion switch is in position OFF.
DISCONN AC/DC
OFF ON
The inverter is connected to the grid (AC) and the
solar modules (DC) when the AC/DC disconnection
switch is in position ON.
4.7.3 AC connector (AC output)
OFF
ON
DISCONN.
AC/DC
AC OUTPUT
The AC connector is used for connecting the inverter
to the grid.
Usage of the AC connection:
● Feeding AC current into the grid.
● Powering up the display when no DC voltage is
available via the DC connectors (DC inputs).
The inverter can be connected to:
● 5-wire grid sytems 3P4W (L1, L2, L3, N, PE)
● 4-wire grid systems 3P3W (L1, L2, L3, PE).
AC plug type:
China Aviation Optical-Electrical Technology Co.
PVE5T125KE36
The AC plug is delivered with the inverter.
4.7.4 DC connectors (DC inputs)
DC INPUT
DC 1 DC 2
+– +– +– +–
The DC connectors (DC inputs) are used for connect-
ing inverter to the solar module string(s).
Connector type:
● Multi-contact MC4
● 10 pairs with female socket for DC+ and male
socket for DC–.
● 10 pairs of plugs are delivered with the inverter
For technical specications, see “13. Technical data”,
p. 105.
4.7.5 Communication port 1
DC 2
COMM.
+–
Functions of Communication port 1:
● 1 x RS485 in/out (e.g. for connecting to a datalog-
ger)
● 6 x Digital inputs (e.g. for connecting to a ripple
receive controller)
● 2 x Dry contacts (e.g. for connecting to an exter-
nal relais)
● 1 x VCC contacts (e.g. for connecting to an exter-
nal relais)
For a detailed description, see “6.7 Connecting com-
munication port I (optional)”, p. 45.