4 Faults and alarms
4.1 Overview of faults and alarms
SINAMICS G120 CU250S-2 Control Units
992
List Manual, 09/2017, A5E33842890
4.1
Overview of faults and alarms
4.1.1
General
Fault and alarm displays (messages)
In the case of a fault, the drive signals the corresponding fault(s) and/or alarm(s).
For example, the following methods for displaying faults and alarms are available:
•
Display via the fault and alarm buffer with PROFIBUS/PROFINET
•
Display online via the commissioning software
•
Display and operating unit (e.g. BOP, AOP)
Differences between faults and alarms
The differences between faults and alarms are as follows:
Table 4-1
Differences between faults and alarms
Type
Description
Faults
What happens when a fault occurs?
•
The appropriate fault response 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 signal ZSW1.7 is set.
•
The alarm is entered into the alarm buffer.
How are alarms eliminated?
•
Alarms acknowledge themselves. If the cause of the alarm is no longer
present, they automatically reset themselves.