6 Parameter Settings and Functions
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It checks control loop and outputs alarm by temperature change of the subject.
For heating control(cooling control), when control output MV is 100%(0% for cooling control) and
PV is not increased over than LBA detection band [LBaB] during LBA monitoring time [LBaT], or
when control output MV is 0%(100% for cooling control) and PV is not decreased below than
LBA detection band [LBaB] during LBA monitoring time [LBaT], alarm output turns ON.
Start to ①
When control output MV is 100%, PV is increased over than LBA detection band
[LBaB] during LBA monitoring time [LBaT].
① to ②
The status of changing control output MV (LBA monitoring time is reset.)
② to ③
When control output MV is 0% and PV is not decreased below than LBA detection
band [LBaB] during LBA monitoring time [LBaT], loop break alarm (LBA) turns ON
after LBA monitoring time [LBaT].
③ to ④
Control output MV is 0% and loop break alarm (LBA) turns and maintains ON.
④ to ⑥
The status of changing control output MV (LBA monitoring time is reset.)
⑥ to ⑦
When control output MV is 100% and PV is not increased over than LBA detection
band [LBaB] during LBA monitoring time [LBaT], loop break alarm (LBA) turns ON
after LBA monitoring time [LBaT].
⑦ to ⑧
When control output MV is 100% and PV is increased over than LBA detection
band [LBaB] during LBA monitoring time [LBaT], loop break alarm (LBA) turns OFF
after LBA monitoring time [LBaT].
⑧ to ⑨
The status of changing control output MV (LBA monitoring time is reset.)
6.4.8 Sensor break alarm [PAR4 → AL-1/AL-2/AL-3 → SBA]
You can set the controller to send out an alarm when a sensor is not connected or disconnected
during temperature control.
Sensor break can be confirmed through an external alarm output contact, such as a buzzer or
similar means.
Setting alarm operation [AL-□] to SBA will activate Sensor Break Alarm.
Alarm output option can be set to standard alarm [AL-A] or alarm latch [AL-B].
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