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Alarm ON delay time
Alarm ON delay functions for all the alarms including the input error alarms (open loop, over-range, and under-
range). The alarm starts only after the delay time you set has passed.
Fig 8: Alarm ON Delay
Time
Time
Alarm state
Alarm
Alarm ON delay time
Input error
Power ON delay time
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under-range). The alarm starts only after the delay time you set has passed.
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starts when the initial action ends and PV is displayed. Consequently, the alarm is ineffective all through these
periods.
Fig 9: Power ON Delay
Time
Time
Alarm state
Initial action
Alarm
Alarm ON delay time
Input error
Combining the power ON delay time and the alarm ON delay time
If the power ON delay and the alarm ON delay are active on power-up, the power ON delay is prioritized.
Time
Time
Power-up
Power-up
Alarm state
Alarm
Alarm is not triggered.
Figure 10: When the alarm conditions are solved before
the power ON delay time has passed
Alarm ON delay time
Power ON delay time
Time
Time
Alarm state
Alarm
*Elapsed time of the alarm ON delay time is counted during
the power ON delay.
Figure 11: When the alarm conditions remain satisfied
beyond the power ON delay time
Alarm ON delay time
Power ON delay time
