Endress+Hauser PROline Prosonic Flow 93 Function Manual page 168

4 Analog Input function block
168
Base index: AI 1 = 350, AI 2 = 390, AI 3 = 430, AI 4 = 470, AI 5 = 510, AI 6 = 550, AI 7 = 590, AI 8 = 630
Parameter Write access
with operating
mode
(MODE_BLK)
ALARM_HYS AUTO - MAN -
(contd.) OOS
PROline Prosonic Flow 93 FOUNDATION Fieldbus
Analog Input function block /
Description
Example:
The top diagram shows the limit values defined for the LO_LIM and
HI_LIM warnings with their respective hystereses (grey
background) and the signal curve of the output value OUT.
The bottom two diagrams show the behaviour of the associated
HI_ALM and LO_ALM alarms in relation to the changing signal
curve (0 = no alarm, 1 = alarm output).
a = The block output value OUT exceeds the HI_LIM limit value,
HI_ALM is activated.
b = The block output value OUT undershoots the hysteresis value
of HI_LIM, HI_ALM is deactivated.
c = The block output value OUT undershoots the LO_LIM limit
value, LO_ALM is activated.
d = The block output value OUT exceeds the hysteresis value of
LO_LIM, LO_ALM is deactivated.
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