46
Figure 5-15 Schematic
diagram
of the lower limit of wait with the deviation low alarm
3
．
Waiting for the alarm again is to wait one more time on the basis of waiting for the alarm, that is,
ignore the alarm triggered by the measured value when the power is connected (waiting) and the
alarm triggered by the measured value when the set value is changed (waiting), until the measured
value next triggers the alarm, as shown in figure 5-16.
Figure 5-16 Schematic
diagram
of the wait again the alarm
5.3.2 Alarm dead zone
In order to avoid repeated occurrence of the alarm state and non-alarm state when the
measured value fluctuates around the alarm setting value, the alarm dead zone (BFM # 604) can
be set. The alarm dead zone applies to all alarm types and all channels. See Figure5-17 ~ Figure
5-19.
Figure 5-17 Schematic diagram of
high limit
and
deviation high
