Autonics TM4-N2RB - Alarm Output Hysteresis; Alarm Output Method

6 Parameter Settings and Functions
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6.4.5 Alarm output hysteresis
“H” shown in the image from ‘6.4.2 Alarm output operating mode’ reresents the alarm output
hysteresis. It is used to set an interval between alarm output ON/OFF periods.
If PV is over or below alarm output SV, output turns ON and it sets OFF time by hysteresis
settings.
When input value is changed near SV, alarm output is often. Set hysteresis and it can be prevent
from often alarm output.
Can be set individually by alarm output (Alarm 1 Type to Alarm 2 Type).
Setting group Parameter Setting range
Factory
default
Unit
Alarm Setting Alarm Hysteresis_Ch
1 to 100 (H),
0.1 to 100.0 (L)
1 Digit
 Alarm output hysteresis applies to heater burnout alarm (HBA) in the same manner.
 This parameter does not appear if Loop Break Alarm (LBA) or Sensor Break Alarm (SBA) is
selected.
6.4.6 Alarm output method
Relay type can be set at alarm output.
 N.O. (Normally Open) stays open when normal and closes in the event of an alarm.
 N.C. (Normally Closed) stays closed when normal and opens in the event of an alarm.
Setting group Parameter Setting range
Factory
default
Unit
Alarm Setting Alarm NO/NC NO, NC NO -
Front indicators
Change Alarm occurs Alarm output Indicator
N.O.
OFF Open □ OFF
ON Close ■ ON
N.C.
OFF Close □ OFF
ON Open ■ ON