Autonics TM4 Series User Manual

6 Parameter Settings and Functions
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6.4.8.2 LBA Detection Band Settings
You can set the minimum value of deviation change to decrease during LBA monitoring
time. Automatically setting with auto-tunning.
Group Parameter Range
Factory
Default
Unit
Alarm Setting Group
LBA Band_Ch1,
LBA Band_Ch2
1~999
0.1~999.9
3 ℃,℉
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.B]
during LBA monitoring time [LBA.T], or when control output MV is 0%(100% for
cooling control) and PV is not decreased below than LBA detection band
[LBA.B] during LBA monitoring time [LBA.T], alarm output turns ON.
Start
to ①
When control output MV is 100%, PV is increased over than LBA
detection band [LBA.B] during LBA monitoring time [LBA.T].
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.B] during LBA monitoring time
[LBA.T], loop break alarm (LBA) turns ON after LBA monitoring
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.B] during LBA monitoring time
[LBA.T], loop break alarm (LBA) turns ON after LBA monitoring
time.
⑦ to ⑧
When control output MV is 100% and PV is increased over than
LBA detection band [LBA.B] during LBA monitoring time [LBA.T],
loop break alarm (LBA) turns OFF after LBA monitoring time.
⑧ to ⑨
The status of changing control output MV (LBA monitoring time is
reset.)
When in standard control mode, a loop error will be assumed and the
alarm output is turned on if the control deviation |SV-PV| is beyond the
LBA Detection Set (
LBA.S
: LBA Set Level) and does not decrease below
the LBA detection band (
LBA.B
: LBA Band) within the LBA monitoring
time (
LBA.T
: LBA Time).
Control Start
①
After control starts, the LBA output turns off as control deviation |SV-
PV| is reduced below the LBA detection band within the LBA
detection time.
②
Control deviation |SV-PV| is within LBA Detection Set. LBA is not in
operation.
③
Control deviation |SV-PV| does not decrease below the LBA
detection band within the LBA monitoring time when PV is out of
LBA detection range. LBA output therefore turns on.
④
Control deviation |SV-PV| decreases below the LBA detection band
within the LBA monitoring time when PV is out of LBA detection
range. LBA output therefore turns off.
⑤
Control deviation |SV-PV| does not decrease below the LBA
detection band within the LBA monitoring time when PV is out of
LBA detection band. LBA output therefore turns on.

Autonics TM4 Series Specifications

General

Brand	Autonics
Model	TM4 Series
Category	Temperature Controller
Language	English