T011C5
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Arc fault detection self-test errors
For -A models only, an autotest circuit is included in the module design of the DC arc fault detection (AFD) solution.
The AFD performs a self-test when the system is started, (e.g., every morning when sunlight is sufcient for grid
connection). The inverter display shows the results of the self-test:
If the self-test results are OK, the inverter will continue to AC grid connection.
If a potential problem on the AFD board is detected, the self-test will result in an
error. Refer to table 5 in this section for possible solutions to the error.
During normal operation, (while the inverter is connected to the grid), the input
current is continually measured and analyzed. If a DC arc fault is detected during
operation, the inverter is disconnected from the AC grid and an E050 error will be
shown on the inverter display.
Press and hold the ESC key for three seconds to clear the error which will start the self-test. If self-test
results are OK, the inverter will reconnect to the AC grid.
If the DC arc fault is still present, the self test will result in error E053. Refer to table 5 in this section to clear
the error and possible solutions.
It is recommended to complete an accurate check of DC and AC connections when the AFD protection trips
continuously when an arc has occurred.
The AFD self-test can be manually started anytime using the following procedure:
1. Turn off the inverter (switching off both DC and AC switches) and,
2. Turn on both the DC and AC switches waiting for the display to communicate the self-test result.
5
Troubleshooting
Test Arc Sensor
OK
Arc Self Test
E053
Arc Fault
E050
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