SMA Technologie AG Electrical Connection
Installation Guide SB40TL_50TL-IEN081211 43
Connection plan
Connection procedure
1. Switch off AC and DC supply voltage.
2. Open the Sunny Boy as described in section 8.1 „Opening the Sunny Boy” (Page 49).
3. Loosen the union nut of the screw clamp (see "H" on Page 27) slightly and remove the dummy
plug from the cable opening.
B
F
B
F
B
F
B
F
B
F
B
F
Trouble-free
operation (B)
Error (F)
Connection
to ground
L or
or N
L or
or N
Operating message
Fault message
Line circuit breaker
(1 A)
Line circuit breaker
(1 A)
Lamp on
Lamp on
Error on the
Sunny Boy
Sunny Boy
running
Sunny Boy
running
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