SMA INVERTER MANAGER - Manual (Page 9)

SMA Solar Technology AG / SMA America, LLC 4 SMA Digital I/O Box
Installation Manual IMVIOBOX-IA-xx-10 9
4.3.2 Connecting the
Inverter Manager
Pin assignment of the terminal (RS485):
4.3.3 Connecting the Signal Source
Connection of a Signal Source with
Potential-Free Relay Contact
Connection of a Signal Source (10 V to 30 V)
with Digital Output Signals
4.3.4 Connecting the I/O Box to the
Voltage Supply
Connect the 12 to 36 V DC connection cable to the terminal
for the voltage supply. Connect the grounding of the
connection cable to the "V-" terminal and connect the
grounding pin if grounding is present.
B Maintain the default setting: X1 = 1, X10 =
0
C Connection of the Inverter Manager
D Connection of the electricity supply
E Maintain the default setting: 1 = Dual, 2 =
Initial
Pin Assignment
D1+ ---
D1- ---
GND GND
D2+ DataA(+)
D2- DataB(-)
Position Designation
5 GND
3 Data B (+)
4 Data A (−)
COM0
DI0
DI1
DI2
DI3
DI4
DI5
DI6
DI7
COM1
DIO0
DIO1
DIO2
DIO3
GND
DIO4
DIO5
DIO6
DIO7
GND
COM0
DI0
DI1
DI2
DI3
DI4
DI5
GND
Dry Contact:
closed: DI0 = off
open: DI0 = on
Pin Assignment
V- Voltage Supply
V+ +24 VDC Nominal (+12 VDC to 36 VDC)
Diameter of the leads
For safety reasons, the leads for the electricity
supply must have a diameter of at least 2 mm².
COM0
DI0
DI1
DI2
DI3
DI4
DI5
DI6
DI7
COM1
DIO0
DIO1
DIO2
DIO3
GND
DIO4
DIO5
DIO6
DIO7
GND
COM0
DI0
DI1
DI2
DI3
DI4
DI5
GND
Wet Contact:
0 V ... 3 V = off
10 V ... 30 V = on
U U 10 V ... 30 V
V-
V+