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 specifications, see
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
munication port I (optional)”, p. 45
.
