SMA Inverter Manager - Connections, Signal Sources, and LED Status

4 I/O Box SMA Solar Technology AG
12 IMVIOBOX-IA-xx-16 Installation Manual
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 Vdc to 36 Vdc connection line with the
terminal for the voltage supply. Connect the grounding of
the connection line to the "V" terminal and connect the
grounding pin (GND) if grounding is present.
4.3.5 LED Signals of the I/O Box
Pin Assignment
D2- ---
D2+ ---
GND GND
D1- DataA(-)
D1+ DataB(+)
(5) GND
(3) Data B (+)D1+
(4) Data A (−)/D1−
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 = on
open: DI0 = off
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:
0Vto3V=off
10Vto30V=on
U
U
10Vto30V
Pin Assignment
V- / V+ Voltage supply 24 Vdc (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.
LED State Explanation
Power Glowing
yellow
The I/O Box is in operation.
Off The I/O Box is not in operation.
Ready Glowing
green
The system is ready for
operation.
Green is
flashing once
per second
The "detect" function was
triggered.
Flashing
green every
0.5 seconds
Firmware is being updated.
Flashing
green
When the green LED is on for
five seconds and then goes off
for five seconds, it means that
the system is in "Safe Mode".
Off The system is not ready for
operation.
Port 1 Flashing
green
Data is being sent or received.
Port 2 Flashing
yellow
Data is being sent or received.