11
Quick installation guide for RPI M50A inverters
ON
1
2
OFF
ON
DISCONN.
AC/DC
AC OUTPUT
DC INPUT
DC 1
DC 2
COMM.
+
–
+
–
+
–
+
–
–
+
–
+
–
+
–
+
Connecting to a datalogger via RS485 (optional)
9
Pin
Designation
1
VCC (+12 V; 0 5 A)
2
GND
3
DATA+
4
DATA–
5
DATA+
6
DATA–
DC 2
COMM.
+
–
Data format
Baud rate
9600, 19200, 38400
Data bits
8
Stop bit
1
Parity
N/A
The RS485 connector is used to connect the inverters of the PV
plant to a monitoring system
For connecting RS485, Pins 3 to 6 are used Do not switch on
VCC, unless you want to use it, e g for an external relais
If you want to use SOLIVIA Monitor the Internet based monitoring
from Delta, you will also need a SOLIVIA M1 G2 Gateway
Default baud rate is 19200 which can be changed on the inverter
(see
“Setting the baud rate for RS485”, p 14
)
Communication port
Connecting multiple inverters to a datalogger
OFF
ON
DISCONN.
AC/DC
AC OUTPUT
DC INPUT
DC 1
DC 2
COMM.
+
–
+
–
+
–
+
–
OFF
ON
DISCONN.
AC/DC
AC OUTPUT
DC INPUT
DC 1
DC 2
COMM.
+
–
+
–
+
–
+
–
OFF
ON
DISCONN.
AC/DC
AC OUTPUT
DC INPUT
DC 1
DC 2
COMM.
+
–
+
–
+
–
+
–
...
ON
1
2
ON
1
2
ON
1
2
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
Datalogger
Termination resistor = ON
RS485
Termination resistor = OFF
Termination resistor = OFF
Connecting a single inverter to a datalogger
Datalogger
Termination resistor = ON
►
If you connect multiple inverters via RS485, set a dif-
ferent Inverter ID for each inverter (see
“Setting the
inverter ID”, p 15
)
If your datalogger has no integrated termination
resistor, switch on the termination resistor on the
fi rst inverter in the RS485 line.
ON
1
2
EPO and digital inputs
VCC switch and
RS485 termination resistor
Dry contacts
Interface for
VCC and
RS485
1
2
3
4
5
6
VCC
Termination
resistor
