Yaskawa YASNAC PC NC Maintenance Manual Manuale Utente Pagina 92

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Chapter 4: Troubleshooting PC NC Maintenance Manual
4-71
AL-E4:Inverter capacity selection error
Error Contents The selected inverter capacity (C1-56) and unit don’t match.
Cause and measures
AL-F0:ROM is defective.
Error Contents The memory (PROM) is defective. [Sum check error]
Cause and measures
AL-F1(F1): EEPROM is defective 1
Error Contents The memory (EEPROM) is defective. [Verification error at initializa-
tion]
Cause and measures
Cause Measures
Inverter capacity selection (C1-56)
setting is defective.
Confirm the inverter type, and inverter capacity
selection (C1-56).
Control card fault Exchange unit (exchange control card)
Gate driver fault Exchange unit (exchange gate driver)
Cause Measures
PROM is defective. Exchange PROM on the control card with a non-defective
one.
Control card fault Exchange unit (exchange control card)
Cause Measures
Control card fault Exchange unit (exchange control card)
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