SMA SUNNY ISLAND 3.0M Operating Manual page 66

10 Troubleshooting
No. Name
W 372 VtgFrqRatio
W 373 VtgFrqRatioSlv1
W 374 VtgFrqRatioSlv2
F 376 ExtCtcNotClose
W 377 ExtCurExCeed
W 378 ExCurExcSlv1
W 379 ExCurExcSlv2
W 380 VAcExtPhsFailS1
W 381 VAcExtPhsFailS2
66 SI30M-44M-60H-80H-BE-en-33
Level Cause
1 Disconnection from the external
grid or generator due to non-
compliance with the voltage-fre-
quency ratio at line conduc-
tor L1 (Master)
1 Disconnection from the external
grid due to non-compliance with
the voltage-frequency ratio at
line conductor L2 (slave 1)
1 Disconnection from the utility
grid due to non-compliance with
the voltage-frequency ratio at
line conductor L3 (slave 2)
3 Tie switch does not close.
1 The external current measured
on L1 exceeds the set parame-
ter value 232.04 GdCurNom
or 234.03 GnCurNom by 2%.
1 The external current measured
on L2 exceeds the set parame-
ter value 232.04 GdCurNom
or 234.03 GnCurNom by 2%.
1 The external current measured
on L3 exceeds the set parame-
ter value 232.04 GdCurNom
or 234.03 GnCurNom by 2%.
1 Phase position of the measured
AC voltage at VExt and AC2
does not match at line conduc-
tor L2 (slave 1).
1 Phase position of the measured
AC voltage at VExt and AC2
does not match at line conduc-
tor L3 (slave 2).
SMA Solar Technology AG
Corrective measures
• Contact the Service, if required (see
Section 16 "Contact", page 161).
• Ensure that the triggering of the tie
switch is correct.
• Ensure that the tie switch is correctly
wired.
• Ensure that the feedback contact is
correctly connected.
• Reduce power consumption of all
loads.
• Reduce power output of the AC
sources (e.g. PV inverter).
• Ensure that the neutral conductor
and line conductor are correctly
connected to connection ExtVtg.
• Ensure that the neutral conductor
and line conductor are correctly
connected to connection AC2.
• Ensure that connections ExtVtg and
AC2 are connected to the same
line conductor.
Operating Manual