Siemens SINAMICS V20 Operating Instructions Manual page 226

Parameter list
8.2 Parameter list
Parameter Function
r0944 Total number of mes-
sages
Displays the total number of messages available.
r0947[0...63] CO: Last fault code
Displays fault history.
Index: [0]
...
[7]
[8]
...
[15]
[16]
...
[23]
...
[63]
Notice: It is possible that this parameter is empty but a fault is still indicated by the inverter. The reason for this is
most likely due to a SAFE condition still existing in the system. In this situation the fault is cleared from
this parameter and it makes no sense to go back to a READY state. First remove the reason for the SAFE
condition and then the inverter will be able to change to a READY state (SAFE condition example is "safe-
ty function is activated").
Note: The function "inverter status at fault" (Page 319) serves as a snapshot record in time of the relative pa-
rameters being monitored at the point of a fault occurring. Some recorded parameters are filtered values.
Therefore if a hardware trip occurs, (r0949 = 0), some filtered values may not appear to reflect those val-
ues which caused the trip.
Example: If a hardware overvoltage trip occurs, (r0947 = 2 and r0949 = 0), the value of the filtered DC link voltage in
r0956 may appear to be under the trip limit. In this case, the filtered DC link value had not had enough
time to rise to the trip level; however, the actual limit had been exceeded and hence the hardware had
tripped to protect itself.
226
Range Factory
default
- -
- -
Recent fault trip --, fault 1
...
Recent fault trip --, fault 8
Recent fault trip -1, fault 1
...
Recent fault trip -1, fault 8
Recent fault trip -2, fault 1
...
Recent fault trip -2, fault 8
...
Recent fault trip -7, fault 8
Can be Scaling Data
changed set
- - -
- - -
Operating Instructions, 11/2016, A5E34559884-006
Data Acc.
type Level
U16 3
U16 2
SINAMICS V20 Inverter