Autonics TM4 Series - Alarm Output Delay Settings; Loop Break Alarm

6 Parameter Settings and Functions
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6.4.7 Alarm Output Delay Settings
 Alarm output delay can be set to prevent false alarms caused by erroneous input
signals resulting from disturbances or noise.
 With a preset delay time, alarm output does not turn on for the preset duration.
Instead, the concerned alarm indicator on the front will flash in 0.5-second intervals.
 Alarm ON delay time: Stands by for the preset duration upon an alarm event, checks
the alarm trigger conditions, and turns on the alarm output if the conditions are still
present.
 Alarm OFF delay time: Stands by for the preset duration following alarm output off,
checks the alarm trigger conditions, and turns off the alarm output if the deactivation
conditions are still present.
Group Parameter Range Factory Default Unit
Alarm Setting
Group
Alarm ON Delay Time 0 ~ 3600 0 Sec.
Alarm OFF Delay 0 ~ 3600 0 Sec.
6.4.8 Loop Break Alarm
 Diagnoses the control loop by monitoring the control subject's temperature changes
and sends out alarms if necessary.
 Heating control: When control output MV is 100% or high limit (H-MV) 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% or low limit (
L-MV) and PV is not decreased below
than LBA detection band (
LBA.B) during LBA monitoring time (LBA.T), alarm output
turns ON.
 Cooling control: When control output MV is 0% or low limit (L-MV) and PV is not
increased over than LBA detection band (
LBA.B) during LBA monitoring time (LBA.T),
or when control output MV is 100% or high limit (
H-MV) and PV is not decreased