9 Troubleshooting SMA Solar Technology AG
50 SI60H-80H-BE-en-20 Operating Manual
9.4.3 Generator or Utility Grid Category (3xx)
No. Name Level Cause Corrective measures
W 309 RlyProtect 1 Excessive current has been
applied to the internal
transfer relay of the master.
• Reduce the total power of the loads, e.g.
by staggering their use over time.
•
Connect the loads with very high power
directly to the generator whenever
possible or connect the utility grid. Ensure
that the generator is not overloaded.
•
In off-grid systems, ensure that the country
data sets of the SMA inverters are set to
stand-alone grid operation
(see the installation manuals of the SMA
inverters).
W 310 RlyProtectSlv1 1 Excessive current has been
applied to the internal
transfer relay of slave 1.
W 311 RlyProtectSlv2 1 Excessive current has been
applied to the internal
transfer relay of slave 2.
F 314 ExtVtgLoss 2 Voltage and/or frequency of
the generator or the battery
backup grid are outside of
the limiting values set.
Corrective measures for a generator:
•
Adjust the limiting values for frequency
and/or voltage of the generator on the
Sunny Island (see installation manual of
the Sunny Island). Observe and analyze
the measured values 134.02 ExtVtg
and 134.04 ExtFrq during operation.
•
Adjust the generator voltage and/or
generator frequency.
Corrective measures for a battery
backup grid:
• Contact the SMA Service Line if required.
W 315 ExtVtgLo 1 Voltage at terminal AC2 of
the master is too low.
Corrective measures for a generator:
•
Adjust the limiting values for voltage of
the generator on the Sunny Island (see
installation manual of the Sunny Island).
Observe and analyze the measured
values 134.02 ExtVtg during operation.
•
If possible, adjust the generator voltage.
Corrective measures for a battery
backup grid:
• Contact the SMA Service Line if required.
W 316 ExtVtgLoSlv1 1 Voltage at terminal AC2 of
slave 1 is too low.
W 317 ExtVtgLoSlv2 1 Voltage at terminal AC2 of
slave 2 is too low.
W 319 ExtVtgHi 1 Voltage at terminal AC2 of
the master is too high.
W 320 ExtVtgHiSlv1 1 Voltage at terminal AC2 of
slave 1 is too high.
W 321 ExtVtgHiSlv2 1 Voltage at terminal AC2 of
slave 2 is too high.
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