West Control Solutions Pro-EC44 - Manual (Page 212)

Pro-EC44 2-Loop Graphical Profile Controller & Recorder
Pro-EC44 Product Manual - 59540-1 October 2013 Page 205
Figure 63. Alarm Hysteresis Operation
PROCESS HIGH
ALARM
PROCESS LOW
ALARM
BAND ALARM
DEVIATION HIGH
ALARM
DEVIATION LOW
ALARM
Inactive Inactive
Inactive
Inactive
Inactive Inactive
Alarm Inactive Alarm Inactive
Alarm Active
Active
Inactive
Inactive
Active Active
Inactive
Active
Active
Alarm Value
Alarm Value
Alarm Value
(from Setpoint)
Setpoint
Process Variable
Process Variable
Process Variable
Process Variable
Process Variable
Alarm Hysteresis Value
Alarm Hysteresis Value
Alarm Hysteresis Value
Alarm Hysteresis Value
Alarm Hysteresis Value
Alarm Hysteresis Value
Setpoint
Setpoint
Alarm Value
(from Setpoint)
Alarm Value
(from Setpoint)
Alarm Value
(from Setpoint)