
Protection Concept
The micro controller continuously and simultaneously monitors and displays the following parameters. Numbers 1 to 3 refer to the energy units 1 to 3:
Error No. | Description |
001 | DC overvoltage 1 |
002 | DC overvoltage 2 |
003 | DC overvoltage 3 |
004 | Frequency fault 1 |
005 | Frequency fault 2 |
006 | Frequency fault 3 |
007 | Overheating of heat sink 1 |
008 | Overheating of heat sink 2 |
009 | Overheating of heat sink 3 |
010 | Grid undervoltage |
011 | Grid undervoltage |
012 | Grid undervoltage |
013 | Grid overvoltage |
014 | Grid overvoltage |
015 | Grid overvoltage |
016 | Grid undervoltage |
017 | AFI fault 1 |
018 | AFI fault 2 |
019 | AFI fault 3 |
020 | Insulation fault 1 |
The numbering 1 to 3 refers respectively to the performance unit 1 to 3:
Error | Description |
No.021 | Insulation fault 2 |
022 | Insulation fault 3 |
023 | DC injection 1 |
024 | DC injection 2 |
025 | DC injection 3 |
026 | Isolated operation |
027 | Grid overvoltage |
028 | Surge fault 1 |
029 | Surge fault 2 |
030 | Surge fault 3 |
031 | Grid voltage 10 minutes mean value |
| > 10 percent Unominal 1 |
032 | Grid voltage 10 minutes mean value |
| > 10 percent Unominal 2 |
033 | Grid voltage 10 minutes mean value |
| > 10 percent Unominal 3 |
034 | Control circuit board 1 fault |
035 | Control circuit board 2 fault |
036 | Control circuit board 3 fault |
038 |
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