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9.9 Alarm 1 (A1), Alarm 2 (A2) action
High limit alarm action
High limit alarm with standby
Hysteresis
Status bit
Hysteresis
Status bit
1
ON
1
ON
0
OFF
0
OFF
Alarm
setting
Main
setting
Main
setting
Low limit alarm action
Low limit alarm with standby
Hysteresis
Status bit
Status bit
ON
1
Alarm
setting
ON
OFF
Alarm
setting
High/Low limits alarm action
Status bit
1
ON
1
0
OFF
0
Main
setting
Hysteresis
ON
OFF
Alarm
setting
Alarm
setting
High/Low limit range alarm action
Alarm
setting
Main
setting
High/Low limit range alarm with standby
Hysteresis
Status bit
Main
setting
High/Low limits alarm with standby
Hysteresis
Alarm
setting
Hysteresis
1
OFF 0
Main
setting
0
Status bit
Alarm
setting
Hysteresis
Status bit
1
ON
1
ON
0
OFF
0
OFF
Alarm
Main Alarm
setting setting setting
Alarm Main Alarm
setting setting setting
Process high alarm
Status bit
Process high alarm with standby
Hysteresis
1
0
Status bit
ON
1
OFF
0
Hysteresis
ON
OFF
Alarm
setting
Alarm
setting
Process low alarm with standby
Process low alarm
Status bit
Hysteresis
Status bit
1
ON
1
0
OFF
0
Alarm
setting
Hysteresis
ON
OFF
Alarm
setting
part: The standby functions.
or
is the action point that alarm is turned on.
Explanation of the alarm action with standby function
When the power is initially supplied to the controller, the function disables alarm action even if the input
value is in the range in which the alarm action works, and this also prevents the alarm even if the alarm
action point enters the above range as a result of the main set value change during control.
Once the input value exceeds the alarm action point continuing the control, the standby function will be
released and when the input value reaches the point again, the alarm action output will work.
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