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Figure 4-38.Holding Process Alarm
Figure 4-39.Latching / Holding Process Alarm
Although the above descriptions are based on alarm 1, the same conditions can be applied
to alarm 2.
4.3.1.1.4.13 Deviation Alarm
A deviation alarm alerts the user when the process deviates too far from set point.
The user can enter a positive or negative deviation value (A1DV, A2DV) for alarm 1 and alarm
2. A hysteresis value (A1HY or A2HY) can be selected to avoid interference problem of alarm
in a noisy environment. Normally, A1HY and A2HY can be set with a minimum (0.1) value.
Trigger levels of alarm are moving with set point.
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