Reason ID = 1 to 6
1. If the alarm occurs
accidentally, the possible
cause is that a power grid
is abnormal accidentally.
The SUN2000
automatically recovers to
the normal operating
status after the fault is
rectified.
2. If this alarm occurs
repeatedly, check whether
voltage of the power grid
is within the acceptable
range. If no, contact the
local power operator. If
yes, change the power grid
overvoltage and
undervoltage protection
points after obtaining
approval from the local
power operator. For
details about how to
change the points, see
7.2.9 Setting Protection
Parameters.
3. If the fault persists for a
long time, check the AC
circuit breaker and output
cable of the SUN2000.
Reason ID = 13 to 18, or 26
1. Check whether the feed
grid point voltage is too
high, if it is, contact your
local power operators.
2. If confirm feed grid point
voltage is higher than the
permissible scope of
consent and the consent of
the local power operators,
modify the undervoltage
protection point.
3. Check whether the grid
voltage peak is too high.
Reason ID = 27 or 28
1. The SUN2000 detects its
external working
conditions in real time,
and therefore the
SUN2000 automatically
recovers to the normal
operating status after the
fault is rectified.
2. If the alarm is repeated,
affect the normal power
generation of the power
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