SMA LCS-TOOL - Connecting the Signal Source

SMA Solar Technology AG / SMA Solar Technology America LLC 4 I/O Box
Installation Manual IMVIOBOX-IA-xx-12 11
4.3.2 Connecting the
Inverter
Manager
Pin assignment of the RS485 terminal
(see Section 3.3.4, page 7):
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 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
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.
Contact pin Assignment
D2- ---
D2+ ---
GND GND
D1- DataA(-)
D1+ DataB(+)
Position Designation
(5) GND
(3) Data B (+)D1+
(4) Data A (−)/D1−
Contact
pin
Assignment
V- Voltage Supply
V+ +24 Vdc nominal (+12 Vdc to 36 Vdc)
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
V−
V+