Setting Hysteresis To Alarm Operation - YOKOGAWA UT Advanced UT32A User Manual

11.3 Setting Hysteresis to Alarm Operation
Description
Setting Details
11-14
If the On/Off switch of the alarm output is too busy, you can alleviate the busyness by
increasing the alarm hysteresis.
Hysteresis for PV High Limit Alarm
Point of ON/OFF action
Output
(alarm setpoint)
ON
Hysteresis
OFF
When Setting Hysteresis of 5ºC and 15ºC for PV High Limit Alarm
HYS:
Open
Alarm-1 setpoint:
PV
Time
Parameter
Name
symbol
Alarm-1 to -4
HY1 to HY4
hysteresis
PV
5ºC (example)
Closed (ON)
Open
100ºC (example)
PV
Alarm ON
OFF
ON
OFF
ON
OFF
Time
Display
level
Sets the hysteresis setpoint as a
display value.
-19999 to 30000 (set it within the
EASY
input range)
The decimal point position
depends on the input type.
HYS: 15ºC (example)
Closed (ON)
Alarm-1 setpoint:
100ºC (example)
Alarm ON
OFF
Setting range Menu symbol
ALRM
IM 05P01D31-01EN