Speed Pid Control - Toshiba TOSVERT VF-AS3 Instruction Manual

b) Adjust the following parameter if necessary.
Steady the PID control. (Limit
the PID deviation
Start the PID control after the
system becomes stable.
*1 Deviation means difference between the set value and the feedback value.
2. 2

Speed PID control

Speed PID control is selected for speed control of a winder to which fast response is required. Acceleration/
deceleration time is automatically set to the shortest time. It also responds much faster by controlling with the
increase/ decrease rate which is separated from acceleration/ deceleration time.
Delay filter is set to the feedback value for the stable operation.
[F359: PID control1]
■ Diagram
PID set value
upper-limit
Increase/
[F367]
decrease rate
Set value
[F372], [F373]
[F389]
PID set value
lower-limit
[F368]
Delay filter
[F361]
Feedback value
[F360]
■ Parameter setting
Refer to chapter 4 and 5 for detail of parameter setting.
1) Select the input of set value and feedback value.
It is necessary to convert tension level into frequency for setting.
Item
Set value
Feedback value
a) Frequency free unit conversion function enables to set the set value and the feedback value easily.
Refer to chapter 3 for detail.
VF-AS3
Item Title
F364
*
1)
F365
F369
= "2: Speed PID control" (Plus characteristic)
PID deviation
upper-limit
- PID deviation
lower-limit
PID plus/minus
Title
F389 PID1 set value select
FPId PID1 set value
(Only [F389]="12")
F360 PID1 feedback input select
Parameter name
PID1 deviation upper-limit
PID1 deviation lower-limit
PID control start wait time
PID output
upper-limit
[F364] [F370]
PID
control
PID output
lower-limit
[F365] [F371]
Parameter name
2-3
E6582112
Output frequency
upper-limit
[ UL ]
Jump
frequency
Output frequency
lower-limit
[ LL ]
Output
frequency
2. PID control selection
2
3
9
10