Faults and Alarms – Overview
Faults and Alarms
3-591
© Siemens AG 2009 All Rights Reserved
SINAMICS G120 Control Units CU230P-2 Parameter Manual (LH9), 11/2009
Differences between faults and alarms
The differences between faults and alarms are as follows:
Table 3-1 Differences between faults and alarms
Type Description
Faults What happens when a fault occurs?
The appropriate fault reaction is triggered.
Status bit ZSW1.3 is set.
The fault is entered in the fault buffer.
How are faults eliminated?
Remove the original cause of the fault.
Acknowledge the fault.
Alarms What happens when an alarm occurs?
Status bit ZSW1.7 is set.
The alarm is entered in the alarm buffer.
How are alarms eliminated?
Alarms acknowledge themselves. If the cause of the alarm is no
longer present, then they automatically reset themselves.