Siemens SINVERT 350 manual Fault Alarm Direct current too high

Alarm and fault messages

4.2 Alarm and fault messages

Table 4-16 Fault 63

(Alarm) Direct current too high

	Condition	The CU / S7 has detected a direct current in excess of
		the set permissible limit
	Causes	Parameter setting error (S7 software)
		Parameter setting error (CU software)
		Open circuit (detected by the S7 and indicated by this
		fault code)
		Isolation amplifier is incorrectly set
	Measures	Adjust the parameter settings
		Repair the cabling
		Set the isolation amplifier correctly
Table 4-17 Fault 64
(Alarm) Vdc or dVdc/dt too high
	Condition	The CU has detected a DC voltage or an abrupt change
		in the DC voltage in excess of the permissible maximum
		value
	Causes	Parameter setting error
		Connected DC voltage is too high
	Measures	Adjust the parameter settings
		Replace the power pack
		Check the connection and/or the cabling of the PV field
		Install a braking resistor
Table 4-18 Fault 65
(Alarm) No checkback signal from the AC or DC contactor
	Condition	Signal is missing at the relevant S7 inputs
	Causes	S7 relay output module defective
		Incorrect setting in the S7
		DC contactor is defective
		AC contactor is defective
		Fault in power supply
		Wire break
	Measures	Replace the S7 relay output module
		Adjust the parameter setting
		Replace the defective contactor
		Repair the power supply
		Repair the cabling

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