SMA SUNNY BOY 3000-US Installation Manual page 70

10 Troubleshooting
Name Description
T-Start-Fan Fan turn-on temperature at
minimum speed.
T-Stop Time during which the
inverter waits before
disconnecting from the
power distribution grid if
"Pac" (fed-in power) falls
below the minimum
required "Vpv-Start"
(DC voltage).
T-Stop-Fan Fan turn-off temperature
V-Const Setval DC target voltage for the
operating mode "V-Const".
These parameters are
important only if the
parameter
"Operating Mode" is set to
"V-const".
Vac-Min* The value is used to
calculate the lower limit of
the permissible AC
voltage.
The standard value is
optimal for plants
˂ 30 kW. The standard
value of 12% results in a
trip value of 88%, as the
list of trip limits shows
(see Section 12.6).
70 SB30-40-US-IA-en-33
Value/range Explanation
32°F to 212°F
(0°C to 100°C)
1 s to 1,800 s
32°F to 212°F
(0°C to 100°C)
SB 3000US:
185 V to 500 V
SB 3800-US:
230 V to 600 V
SB 4000US:
230 V to 600 V
0% to 50%
SMA America, LLC
Default
value
122°F
(50°C)
2 s
122°F
(50°C)
SB 3000US:
500 V
SB 3800-US:
600 V
SB 4000US:
600 V
12%
Installation Manual