12
2-position action hysteresis width (Setting range: 0.0 to
50.0%FS)
[Description]
• Hysteresis width under the 2-posi-
tion action control can be set as
shown in the example. When hys-
teresis width is set small, the con-
trol efficiency is improved, but the
number of operations increases and
decreases the life of the operation
terminal unit and the device.
• Hysteresis width is necessary to pre-
vent chattering due to noise.
• For 2-position action, the value of P
(proportional band) should be set to
0.0.
• Set value can be obtained by indus-
trial value.
Related parameter: P (Page 6)
Example) Altering the hysteresis width of 1°C to 2°C
dd
d: Hysteresis
set value ×
ON
OFF
SV
(Example of
reverse action)
1
2
Key operation Description
Press the SEL key to display P.
Press the SEL key repeatedly until
is displayed.
Press the or key to display
2.
Press the DATA key once.
Current data of 1°C is displayed.
Press the SV key when you need to
display the operation status display.
After press the ENT key, data of
2°C is registred.
Operation is started with 2°C of data.
Display
SEL
ENT
SV
DATA
SEL
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