Setting For Pid Control; Fundamental Setting; Feedback Value - Toshiba TOSVERT VF-AS3 Instruction Manual

4

Setting for PID control

First, set the set value and the feedback value.
Then, set other parameters to suit the motor and the system if necessary.
Note) Set the set value and the feedback value by converting each pressure level into frequency. Actual output frequency
is different from setting frequency for PID control.
4. 1

Fundamental setting

Make sure to set the set value and the feedback value.
In case of process type PID control, you need to set acceleration time and deceleration time to short for quick
response.
4. 1. 1

Feedback value

Input the signal from detector as feedback signal.
(1) Select the input of feedback signal
Title
F360
Note) It is necessary I/O extension option "ETB013Z" for using terminals [AI4] and [AI5], digital encoder
"VEC008Z" for using high resolution pulse train.
(2) Set feedback value after converting the feedback input level into
frequency.
1) Analog input
Refer to chapter 6 for detail of analog input characteristic setting.
Example of feedback setting
Condition:
Convert input level 4-20mA by terminal [II] to 0-60Hz.
VF-AS3
Parameter name
PID feedback input select
Pressure control as PID control.
Input the feedback signal of 1 to 2 atm into terminal [II] by 4 to 20mA signal.
[F360]= "3: Terminal II"
: 4.1
: 4.2, 4.3
Adjustment range (input of feedback)
0: -
1: Terminal RR
2: Terminal RX
3: Terminal II
4: Terminal AI4 (option)
5: Terminal AI5 (option)
6 - 15: -
16: Pulse train
17: High resolution pulse train (option)
4-1
II
III
10
11
12
13
14
15
16
17
18
4. Setting for PID control
I
1
2
3
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5
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