SMA SB3.0-1SP-US-41 Installation Manual page 38

6 Electrical Connection
Using the Multifunction Relay as a Fault Indicator Contact
You can use the multifunction relay as a fault indicator contact and have an error or smooth
operation of the inverter displayed or signaled via a suitable display device. You can connect
multiple inverters to one fault indicator or operation indicator, as needed.
Operation message
Fuse
B F
1 2 3
B F
1 2 3
B F
2
1 3
Light on
Trouble-free
operation (B)
Figure 9 : Circuit diagram with multiple inverters for connection to an operation indicator and circuit diagram for
connection to a fault indicator (example)
38 SBxx-1SP-US-41-IA-xx-10
=
max. 30 V
B
1 2
B
1 2
B
2
1
Grounding,
if applicable
SMA Solar Technology AG
Error message
=
DC
Fuse
F
3
F
3
F
3
Error (F)
Error in the
inverter
Inverter
in operation
Inverter
in operation
Light on
Installation Manual