9 Troubleshooting SMA Solar Technology AG
54 SI60H-80H-BE-en-20 Operating Manual
9.4.4 Generator Category (4xx)
W 380 VAcExtPhsFailS1 1 The line conductors of the
measured AC voltage at
terminals VExt and AC2 do
not match.
• Ensure that the neutral conductor and line
conductor are correctly connected to the
terminal ExtVtg.
• Ensure that the neutral conductor and line
conductor are correctly connected to
terminal AC2.
• Ensure that the terminals ExtVtg and
AC2 are connected to the same line
conductor.
W381 VAcExtPhsFailS2 1
W 383 HotAcBusSlv1 1 When the tie switch is open,
AC voltage from an
unknown source is present at
terminal AC2.
• Ensure that the triggering of the tie switch
is correct.
• Ensure that the tie switch is correctly
wired.
W 384 HotAcBusSlv2 1
No. Name Level Cause Corrective measures
W 401 GnRevPwrProt 1 AC sources in the
system are driving the
generator. The reverse
power in the generator
has been exceeded for
too long.
• Adjust the generator request to the properties of the
AC sources in the system and the loads, e.g. for PV
inverters preferably request the generator at night.
•
If the generator can absorb reverse power, adjust
the settings for reverse power (see installation
manual of the Sunny Island).
W 402 GnFailLock 1 Connection of the
generator is locked as a
result of too many
interrupted start
processes.
• Ensure that the generator triggering is functioning,
the generator starts, and there is constant and stable
generator voltage present at terminal AC2.
• To re-enable connection of the generator,
acknowledge the generator error (see Section9.2
"Acknowledging Errors", page41).
A too short warm-up time 234.12 GnWarmTm may
have been configured and hence the generator is unable
to supply valid voltage.
• Ensure that the generator warm-up time is configured
appropriately (see the installation manual of the
Sunny Island).
No. Name Level Cause Corrective measures