Faults and Alarms – Overview
Faults and Alarms
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© Siemens AG 2011 All Rights Reserved
SINAMICS G120 Control Units CU230P-2 Parameter Manual (LH9), 01/2011
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.
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