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 (LBA Band) during LBA monitoring time (LBA
Time), or when control output MV is 0%(100% for cooling control) and PV is not decreased
below than LBA detection band (LBA Band) during LBA monitoring time (LBA Time), alarm
output turns ON.
Start to ①
When control output MV is 100%, PV is increased over than LBA detection band
(LBA Band) during LBA monitoring time (LBA Time).
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 (LBA Band) during LBA monitoring time (LBA Time), loop break alarm (LBA)
turns ON after LBA monitoring time (LBA Time).
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 (LBA Band) during LBA monitoring time (LBA Time), loop break alarm (LBA)
turns ON after LBA monitoring time (LBA Time).
⑦ to ⑧
When control output MV is 100% and PV is increased over than LBA detection
band (LBA Band) during LBA monitoring time (LBA Time), loop break alarm (LBA)
turns OFF after LBA monitoring time (LBA Time).
⑧ to ⑨
The status of changing control output MV (LBA monitoring time is reset.)
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