4 I/O Box SMA Solar Technology AG / SMA Solar Technology America LLC
12 IMVIOBOX-IA-xx-12 Installation Manual
4.3.5 LED Signals of the I/O Box
4.4 Technical Data
Diameter of the varistor leads
For safety reasons the varistor 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.
System data
Electricity supply 24 Vdc nominal,
12 Vdc to 36 Vdc
Cabling I/O cable max. 4 AWG
Dimensions 27.8 mm x 124 mm x
84 mm (1.09 in x 4.88 in x
3.31 in)
Weight < 200 g
Operating temperature
range
Standard module:
-10°C to +75°C
14°F to 167°F
Storage temperature -40°C to +85°C
-40°F to 185°F
Relative humidity,
non-condensing
5 % to 95 %
Operating altitude < 2000 m
Industry standards and
certifications
UL 508, CE, FCC Class A
Digital input
Sensor type Potential-free contact
(NPN or PNP); wet contact
I/O mode DI or event counter
Potential-free contact On = ground fault
Off = open
Wet contact (DI to COM) On = 10 Vdc to 30 Vdc
Off = 0 Vdc to 3 Vdc
Insulation voltage 3000 Vdc or 2000 Veff
Counter/Frequency 250 Hz, memory in off-state
System data
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