Program features 31
Autoreset
The Autoreset function resets faults automatically without intervention from the user or
service staff. However, a fault can be reset automatically only for a predefined number of
times before the fault becomes permanent and must be reset manually by the user.
Note: A permanent fault always prevents grid connection.
There are three categories of faults:
Category 1: Faults that are automatically reset and have individual configuration
parameters (see page 31)
Category 2: Faults that are automatically reset and share configuration parameters (see
page 32)
Category 3: Faults that are not automatically reset, i.e. rest of the faults
Faults with individual configuration settings (category 1 faults)
These faults have individual configuration parameters for maximum number of fault
occurrences and adjustable time period between reset attempts. These faults may also
require fine tuning of the autoreset settings due to environmental and installation site
conditions.
The table below shows the category 1 faults:
These faults have two parameters,
• one for setting the total number of counts the autoreset function can clear/reset the
fault before it becomes permanent.
• one for controlling the time period between consecutive reset attempts.
Note: When the inverter is connected to the grid for more than 10 seconds, all
autoreset counts are reset to zero and allows to restart counting from zero.
The inverter indicates the warning 57652 Autoreset, when an attempt is made to clear a
fault.
For example, the fault 37191 Isolation can be caused due to moisture build-up on the solar
panels during the night. It is not needed here to restart the inverter every minute in the
early morning because it may take some time for the moisture to evaporate. In this case, it
is better to define a longer time between consecutive autoreset attempts for the isolation
fault.
Settings
132.03 Overcurrent trials
132.04 Overcurrent reset delay
132.05 DC protection trials
132.06 DC protection reset delay
132.07 Ground impedance trials
132.08 Ground impedance reset delay
Fault code Fault name
11776 AC overcurrent
37120 Ground current
37190 DC protection
37191 Isolation
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