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• Output ON/OFF is determined according to which of PV or SV is larger.
• Set parameter P to 0 for selecting the two-position control.
• Set the operation insensitive zone (hysteresis) to avoid an output chattering near PV SV. (setting at
shipping: HYS=1)
• Parameter setting and operation example
5-1 ON/OFF (two position) control
Example 1: Reverse action
Example 2: Direct action
Parameter
P
P-n1
HYS
Relationship of
PV and SV
PV＞SV
PV＜SV
Output
OFF
ON
Setting value
0.0
0 (or 1)
Any value
Parameter
P
P-n1
HYS
Setting value
0.0
2 (or 3)
Any value
PV
when PV increases
PV
when PV decreases
HYS
SV
PV
when PV increases
PV
when PV decreases
HYS
SV
ON
ON
ON
ON
Relationship of
PV and SV
PV＞SV
PV＜SV
Output
ON
OFF
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