YOKOGAWA UT130 Technical Information

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4-13
TI 05C01E02-01E 1st Edition : Oct. 31, 2001-00
The alarm hysteresis (ON/OFF band) is effective when used as the figure below.
The alarm hysteresis can be set between 0.0 to 100% of measured input range. The
setting is a temperature setting.
Closed(ON)
Open
Time
A1: 100°C (example)
Closed(ON)
Open
Output
Time
A1: 100°C (example)
When HY1 = 5°C, the alarm turns on and
off too often, and the relay chattering
occurs.
Alarm 1 type (AL1): PV high limit alarm
Alarm 1 hysteresis (HY1): 5°C
A1 (Alarm 1 setpoint): 100°C
Alarm 1 type (AL1): PV high limit alarm
Alarm 1 hysteresis (HY1): 15°C
A1 (Alarm 1 setpoint): 100°C
Short relay life
When HY1 = 15°C, the alarm does not turn
on and off too often, and the relay chattering
does not occur.
"Open" and "Closed" above show the status of relay output
of external contact.
Long relay life
Example
Ouput
HY1: 15°C (example)
HY1: 5°C (example)
Measured input (PV)
Measured input (PV)
Alarm ON
Temperature
Temperature
OFF
ON
OFF
ON
OFF
Alarm ON
OFF

YOKOGAWA UT130 Specifications

General

Brand	YOKOGAWA
Model	UT130
Category	Temperature Controller
Language	English