Siemens SINVERT 350 manual Fault Alarm Grid voltage outside tolerance

			Alarm and fault messages
			4.2 Alarm and fault messages
Table 4-24 Fault 96
(Alarm) Grid voltage outside tolerance
	Condition	The CU has detected that the grid voltage is outside the
		set tolerance limits
	Causes	Grid voltage outside tolerance
		o	No power supply
		o	Unstable power supply
		o Medium-voltage breaker has tripped (if
			installed)
		o	Control oscillations
		o Supply point overloaded (voltage rise as a
			result of additional load)
		o Control (CU software) is not working correctly
		Defective components
		o	Transformer
		o	AC capacitors
		o	Restrictor
		o	AC fuses
		o	Drive
	Measures	Adjust the parameter settings
		Close the medium-voltage breaker
		Replace the defective components
Table 4-25 Fault 97
(Alarm) No checkback signal from the DC link contactor
	Condition	The CU has detected that the grid voltage is outside the
		set tolerance limits
	Causes	No checkback signal on the S7
		Interface contactor has not responded
		o Interface contactor is defective
		o Interface contactor has not operated
		o Interface contactor is blocked
		o Insufficient current supply to contactor coils
		Fault in signal power supply
		Wire break
		S7 relay output module defective
	Measures	Repair the interface contactor
		Replace the interface contactor
		Repair the power supply
		Use a higher-capacity power supply
		Replace the cabling
		Replace the S7 relay output module

Table 4-26 Fault 98

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