Mitsubishi Electric FR-A700 Instruction Manual page 673

Parameter
Reverse action
Increases the manipulated variable fi (output frequency) if deviation X = (set point − measured
value) is positive, and decreases the manipulated variable if deviation is negative.
Set point
Fig. 6-240: Heater
Forward action
Increases the manipulated variable (output frequency) if deviation X = (set point − measured
value) is negative, and decreases the manipulated variable if deviation is positive.
Set point
Fig. 6-241: Cooling
Relationships between deviation and manipulated variable (output frequency).
Reverse action
Forward action
Tab. 6-168: Relationships between deviation and manipulated variable
FR-A700 EC
X>0
+
Cold → fi increased
Hot → fi decreased
X<0
–
Feedback signal
(measured value)
X>0
+
Too Cold → fi decrease
Hot → fi increase
X<0
–
Feedback signal
(measured value)
Deviation
Measured value
Measured value
Deviation
Deviation
Positive
Special operation
Set point
t
I000047C
Set point
t
I000048C
Negative
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