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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Siemens SINVERT 350 manual Fault Alarm Direct current too high

350, SINVERT 350 specifications

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