SMA INVERTER MANAGER Instructions D'installation page 11

SMA Solar Technology AG
Pin assignment of the RS485 terminal
(see Section 3.3.5, page 7):
(5) GND
(4) Data A (−)/D1−
(3) Data B (+)D1+
Pin
D2-
D2+
GND
D1-
D1+
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
Installation manual
Assignment
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GND
DataA(-)
DataB(+)
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.
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.
4.3.5 LED Signals of the I/O Box
LED State
Power Glowing
yellow
Off
Ready Glowing
green
Green is
flashing once
per second
Flashing
green every
0.5 seconds
Flashing
green
Off
Port 1 Flashing
green
4 I/O Box
Explanation
The I/O Box is in operation.
The I/O Box is not in operation.
The system is ready for
operation.
The "detect" function was
triggered.
Firmware is being updated.
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".
The system is not ready for
operation.
Data is being sent or received.
IMVIOBOX-IA-xx-17 11