Connecting The Signal Source - SMA DIGITAL I/O BOX Manual De Instalación

SMA Solar Technology AG / SMA Solar Technology America LLC
4.3.2 Connecting the
Inverter Manager
Do not connect during operation
Do not connect the I/O Box to the Inverter Manager
during operation. Errors might occur that cannot be
detected immediately.
• Disconnect the Inverter Manager from voltage
sources.
• Connect the I/O Box with the Inverter Manager.
• Reconnect the Inverter Manager to the voltage
supply.
Pin assignment of the RS485 terminal (see Section 3.3.4,
page 5):
(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
Dry Contact:
closed: DI0 = on
open: DI0 = off
Installation Manual
Assignment
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GND
DataA(-)
DataB(+)
COM0
DI0
DI1
DI2
DI3
GND
DI4
DI5
Connection of a Signal Source (10 V to 30 V)
with Digital Output Signals
10 V to 30 V
Wet Contact:
0 V to 3 V = off
10 V to 30 V = on
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 if grounding is present.
Pin Assignment
V- Voltage supply
V+ +24 Vdc nominal (+12 Vdc to 36 Vdc)
Diameter of the varistor leads
For safety reasons the varistor leads for the electricity
supply must have a diameter of at least 2 mm².
COM0
DI0
DI1
DI2
DI3
GND
DI4
DI5
DI6
DI7
COM1
DIO0
DIO1
DIO2
DIO3
GND
DIO4
DIO5
DIO6
DIO7
COM0
U U
DI0
DI1
DI2
DI3
GND
DI4
DI5
V−
V+
IMVIOBOX-IA-xx-11
4 I/O Box
COM0
DI0
DI1
DI2
DI3
GND
DI4
DI5
DI6
DI7
COM1
DIO0
DIO1
DIO2
DIO3
GND
DIO4
DIO5
DIO6
DIO7
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