Toshiba TOSVERT VF-AS3 Instruction Manual page 15

■ Diagram
Speed reference
[FMOd/F207]
PID set value
upper-limit
Set value
[F367]
(Dancer
position)
[F389]
PID set value
lower-limit
[F368]
Feedback value
(Dancer detection value)
[F360]
■ Dancer control operation
1) Inverter operates by speed reference.
2) PID control: Set value:
Feedback value: dancer detection value
Correct speed reference by deviation of PID control for dancer.
Set the dead band for the deviation if necessary.
3) When you don't need dancer correction, turn the input terminal assigned "36: PID control OFF" ON.
In case the input terminal ON, the PID output is zero. The inverter operates by frequency command.
4) To keep the current value of dancer correction frequency, turn on the input terminal to which [94:
Dancer correction OFF] is assigned.
In this case, the PID output is kept the value at which the dancer correction OFF signal is input.
■ Parameter setting
Refer to chapter 4 and 5 for detail of parameter setting.
1) Select the input of dancer position (set value) and dancer detection value (feedback value).
Set each level converted into frequency for the setting.
Set the dead band for deviation between set value and feedback value if necessary.
Item
Speed reference
Feedback value
PID output dead band
VF-AS3
PID deviation
Deviation dead band upper-limit
[F364]
[F388]
-
PID deviation
lower-limit
[F365]
PID plus/minus Dancer correction OFF
dancer position
Title
FMOd Frequency command select 1
F207 Frequency command select 2
F360 PID1 feedback input select
F388 PID1 output dead band
2-9
PID output
upper-limit
+
[F370]
+
PID
control
PID output
lower-limit
[F371]
(94/95)
Increase/
decrease rate
[ACC], [dEC]
Output frequency
Parameter name
E6582112
Jump
frequency
2
3
Output frequency
upper-limit
[ UL ]
Output frequency
lower-limit
[ LL ]
9
10
2. PID control selection