Sunny Boy Installation Manual

6 Electrical Connection
SMA Solar Technology AG
Installation ManualSBxx-1SP-US-41-IA-xx-1038
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.
B F
1
2
3
B F
1
2
3
B F
1
2
3
B F
1
2
3
B F
1
2
3
B F
1
2
3
= =
Light on
Grounding,
if applicable
Trouble-free
operation (B)
Error (F)
Operation message
Error message
Fuse
Light on
Error in the
inverter
Inverter
in operation
Inverter
in operation
Fuse
max. 30 V
DC
Figure 9 : Circuit diagram with multiple inverters for connection to an operation indicator and circuit diagram for
connection to a fault indicator (example)
ENGLISH