Lenze Drive PLC Developer Studio 9300 Servo PLC (V8.x) Instrukcja Użytkownika Pobierz pdf (Strona 119)

9300 Servo PLC

Appendix

3−17

9300 Servo PLC EN 5.0

3.5.5 Fault analysis via the fault memory

The fault memory of the PLC consists of 8 memory locations which store the following information

about the active fault and the 7 previous faults in their chronological order of occurrence:

 No. of system error message (^ 3−8)

 Response to the fault (warning, message, TRIP, etc.) (^ 3−8)

 Time of occurrence (referred to power−on time of the PLC, e.g. "1234567 s")

 Frequency of successive occurrence

The fault memory information is stored under codes C0168/x ... C0170/x:

C0168 C0169 C0170 Subcode Contains information about

No. of the

system error message

and response

Time

of occurrence

Frequency

of successive

occurrence

Active fault

Last fault

Last but one fault

Last but two fault

Last but three fault

Last but four fault

Last but five fault

Last but six fault

Tip!

The fault memory works according to the principle of a shift register:

If the current fault is no longer active or has been acknowledged by a TRIP−RESET, all information

is automatically shifted up one subcode in the fault memory.

 The information concerning the previously active fault is now stored under subcode 2.

 The information concerning the previous last but six fault is deleted from the fault memory and

cannot be retrieved any longer.

Note!

 If several faults causing different responses occur simultaneously:

– Only the fault causing the highest−priority response is entered into the fault memory

(priority = TRIP → message → FAIL−QSP → warning).

 If several faults causing the same response occur simultaneously (e.g. 2 messages):

– Only the fault occurring first is entered into the fault memory.

 If a fault occurs several times in succession:

– Only the time of the last occurrence is entered into the fault memory.

1 2 ... 114 115 116 117 118 119 120 121 122 123 124 ... 166 167

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