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143
PARAMETERS
4
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.
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.
Relationships between deviation and manipulated variable (output frequency)
(3) Wiring example
• Sink logic
• Pr. 128 = 20
• Pr. 183 = 14
• Pr. 192 = 16
• Pr. 193 = 14
• Pr. 194 = 15
Deviation
Positive Negative
Reverse action
Forward action
X>0
X<0
+
-
Process value
Set point
[Heating]
Feedback signal (Process value)
Cold
→
up
Hot
→
down
Deviation
Set point
X>0
X<0
+
-
Set point
Too cold
→
down
Hot → up
Set point
[Cooling]
Feedback signal (Process value)
Process value
Deviation
NFB
0
24V
AC1
φ
200/220V 50/60Hz
STF
STR
RT(Note 3)
SD
10
2
5
1
4
U
V
W
(Note 2)
FU
OL
SE
(Process values) 4
∼
20mADC
IM P
-
++ +
-
(OUT)
(24V)
IPF
(Note 1)
Power supply
Forward rotation
Reverse rotation
PID control selection
Setting potentiometer
(Set point setting)
Inverter
Motor
Pump
Upper limit
Lower limit
Forward
rotation output
Reverse
rotation output
Output signal common
For 2-wire
type
Detector
For 3-wire
type
DC power
supply
(COM)
R
S
T