YOKOGAWA UT55A User Manual

11-16
IM 05P01C31-01EN
11.3 SettingHysteresistoAlarmOperation
Description
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
(alarm setpoint)
PV
Output
ON
OFF
Hysteresis
WhenSettingHysteresisof5ºCand15ºCforPVHighLimitAlarm
Closed (ON)
Open
Time
Alarm-1 setpoint:
100ºC (example)
Closed (ON)
Open
Time
Alarm-1 setpoint:
100ºC (example)
HYS: 15ºC (example)HYS: 5ºC (example)
PV
PV
Alarm ON
OFF
ON
OFF
ON
OFF
Alarm ON
OFF
Setting Details
Parameter
symbol
Name
Display
level
Setting range Menusymbol
HY1 to HY8
Alarm-1 to -8
hysteresis
EASY
Sets the hysteresis setpoint as a
display value.
-19999 to 30000 (set it within the
input range)
The decimal point position
depends on the input type.
ALRM
Note1: In Cascade control, the LP2 lamp is lit while the Loop-2 parameter is displayed.

YOKOGAWA UT55A Specifications

General

Brand	YOKOGAWA
Model	UT55A
Category	Temperature Controller
Language	English