ABB COMMANDER 1900 Series Programming Manual page 13

Process
Variable
High Deviation
(Positive Trip)
High Deviation
(Negative Trip)
Process
Variable
Low Deviation
(Negative Trip)
Low Deviation
(Posiitve Trip)
Output
0
Time in seconds
Counter
Started
Example shows time hysteresis set to 70 seconds used with a high process alarm
Fig. 3.5 High and Low Deviation with Hysteresis
40 0
Counter Counter
Reset Started
Time Hysteresis Status
Fig. 3.6 Time Hysteresis Alarm
3 BASIC CONFIGURATION LEVEL...
Hysteresis
Value
Hysteresis
Value
Alarm On
Alarm Off
Alarm On
Alarm Off
Hysteresis
Value
Hysteresis
Value
Alarm On
Alarm Off
Alarm On
Alarm Off
70 130
Hysteresis Time Counter
Elapsed Reset
High Deviation
Positive Trip Value
Control Set Point
High Deviation
Negative Trip Value
Low Deviation
Positive Trip Value
Control Set Point
Low Deviation
Negative Trip Value
Alarm Trip Point
Alarm On
Alarm Off
11