Alarm Acknowledgement - Siemens SITRANS DA400 Operating Instructions Manual

7.5

Alarm acknowledgement

The effect of the parameter "P.14/AcK" is described below. For simplification, no hysteresis
is plotted in the time diagram. The parameter value "P.13/TIME" for the response time is 0.
The parameter "P.14/AcK" can be set to three values:
oFF
St.Ac
¬St.Ac
Figure 7-7 Acknowledgement evaluation
SITRANS DA400 for material flow monitoring with protection against explosion
Operating Instructions, 09/2007, A5E00841152-01
Acknowledgment here with the <ACK> button is not possible. The alarm occurs
exclusively upon exceeding or not reaching the alarm value.
Stored and can be acknowledged
Time 1: Alarm value exceeded, alarm is output.
Time 2: Acknowledgement with <ACK> button, alarm is reset.
Time 3: Alarm is only set if the alarm value is exceeded again.
Time 4: Value below alarm value, alarm remains saved.
Time 5: Acknowledgement with <ACK> button, alarm is reset.
Not stored but can be acknowledged
Time 1: Alarm value exceeded, alarm is output.
Time 2: Acknowledgement with <ACK> button, alarm is reset.
Time 3: Alarm is only set if the alarm value is exceeded again.
Time 4: Value below alarm value and alarm canceled.
Signal processing
7.5 Alarm acknowledgement
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