11.4 MEASUREMENT OF EXTERNAL PRODUCTION VIA METER DDSU
PIN INVERTER
PIN METER
Note
16
24
Communication of the External
Production Meter
15
25
Battery
CT
Meter DDSU connections
Meter on External Production
2. Connect the Meter in “direct connection” mode, specifically:
Connect PIN 2 of the Meter to the neutral cable (N);
Connect PIN 3 respectively to the external production direction phase;
Connect PIN 1 to the new photovoltaic system and loads direction
phase.
1. Connect Meter and inverter via the RS485 serial
port.
On the Meter side, this port is identified by
PINs 24 and 25.
On the inverter side, use the COM port by connecting
PINs 16 and 15
NOTE: For
distances
between the Meter and hybrid inverter
greater than 100 meters
, it is recommended
to connect two 120 Ohm resistors along the 485 daisy chain: the first to the inverter (between PINs 15
and 16 of the Ohm inverter COM), and the second directly to the Meter (PINs 24 and 25).
PV panels
HYD
Meter
L
N
Grid
Loads
Meter
Inverter
HYD
24 25
15 16
