Faults And Alarms - Siemens SINAMICS S120 Operating Instructions Manual

Control via the operator panel

4.11 Faults and alarms

4.11 Faults and alarms
If a fault occurs, the drive displays the fault and/or alarm on the operator panel. Faults are
indicated by the red "FAULT" LED and a fault screen is automatically displayed. You can use
the F1 Help function to call up information about the cause of the fault and how to remedy it.
You can use F5 Ack. to acknowledge a stored fault.
Alarms are indicated by means of the yellow "ALARM" LED. The system also displays a note
in the status bar providing information on the cause.
What is a fault?
A fault is a message from the drive indicating an error or other exceptional (unwanted) status
that results in the drive being switched off. This could be caused by a fault within the
converter or an external fault triggered, for example, by the winding temperature monitor for
the motor. The faults are displayed and can be reported to a higher-level control system via
PROFIBUS. In the factory default setting, the message "converter fault" is also sent to a
relay output. Once you have rectified the cause of the fault, you have to acknowledge the
fault message.
What is an alarm?
An alarm is the response to a fault condition identified by the drive. It does not result in the
drive being switched off and does not have to be acknowledged. Alarms are "self
acknowledging", that is, they are reset automatically when the cause of the alarm has been
eliminated.
Fault and alarm displays
Every fault and alarm is entered in the fault/alarm buffer along with time the error occurred
and the time it was rectified. This time stamp appears in the header of the screen for each
inversely displayed message selected with "F2/F3". There are two time stamp display
formats:
● Format: DDDD: HH:MM:SS
Number of days, hours, minutes and seconds since the fault or alarm first occurred. This
display format is active when "AOP→Drive" time synchronization is not selected.
● Format: YY:MM:DD:HH:MM:SS
System time (year, month, day, hour, minute, second) at which the fault or alarm occurred
in systems with a time-of-day master. This display format is active when "AOP→Drive"
time synchronization has been selected.
Note
For further information about time synchronization → see chapter "Commissioning / Service
menu", section "AOP30 settings", "Set date/time (for date stamping of error messages)"
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Cabinet Modules Operator Panel AOP30
Operating Instructions, 04/2014, A5E03263551A