Pixsys ATR 171 - Alarm Intervention Modes - Deviation Alarms; Upper Deviation Alarm; Lower Deviation Alarm

44 ATR171 - User manual
12.d Upper Deviation Alarm (selection
H.d.aL.
)
1
Upper deviation alarm value of alarm
setpoint greater than “0” and hysteresis
value greater than“0” (par. 36
a .1 . H y .
> 0). **
2
Upper deviation alarm value of alarm
setpoint minor than “0” and hysteresis
value greater than “0” (par. 36
a .1 . H y .
> 0). **
12.e Lower Deviation Alarm (selection
L. d . a L.
)
1
Lower deviation alarm value of alarm
setpoint greater than “0” and hysteresis
value greater than “0” (par. 36
a .1 . H y .
> 0). **
2
Lower deviation alarm value of alarm
setpoint minor than “0” and hysteresis
value greater than “0” (par. 36
a .1 . H y .
> 0). **
** a) The example refers to alarm 1; the function can also be enabled for alarm 2 and 3 on models that include
it. b) With hysteresis value less than “0” (
A.1.HY.
< 0) the dotted line moves over the alarm setpoint.