ABB AX400 Series User Manual page 39

Single and dual input analyzers for pH/Redox (ORP)
AX416, AX436, AX460, AX466 & AX468
Note. The following examples illustrate
defined set point.
Low Alarm Actions
defined set point.
Fig. 5.2 High Failsafe Alarm without Hysteresis and Delay
Fig. 5.3 High Failsafe Alarm with Hysteresis but no Delay
Fig. 5.4 High Failsafe Alarm with Hysteresis and Delay
IM/AX4PH Rev. P
, i.e. the alarm is activated when the process variable exceeds the
High Alarm Actions
are the same, except the alarm is activated when the process variable drops below the
Fig. 5.5 High Non-Failsafe Alarm without Delay and Hysteresis
Fig. 5.6 High Failsafe Alarm with Delay but no Hysteresis
5 Programming
37