Mitsubishi FR-E520-0.1K-NA - Page 151

PARAMETERS
136
4) Reverse action
Increases the manipulated variable (output frequency) if deviation X (set point -
process value) is positive, and decreases the manipulated variable if deviation is
negative.
Set point
X
>
0
X
<
0
Process value
+
−
[Heating]
Deviation
Process value
Set point
Cold
→
fi up
Hot
→
fi down
5) Forward action
Increases the manipulated variable (output frequency) if deviation X (set point -
process value) is negative, and decreases the manipulated variable if deviation is
positive.
+
−
[Cooling]
Set point
X
>
0
X
<
0
Process value
Set point
Process value
Deviation
Too cold
→
fi down
Hot
→
fi up
Relationships between deviation and manipulated variable (output frequency)
Deviation
Positive Negative
Reverse
action
*+
Forward
action
+*
4