Setting For Pid Control; Fundamental Setting; Feedback Value - Toshiba TOSVERT VF-S15 Instruction Manual

4. Setting for PID control

First, set the process value and feedback value.
Then, set other parameters to suit the motor and the system if necessary.
Note) Set process value and 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 process 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 feedback signal at f369.
Description
Disabled
Terminal VIA
Terminal VIB
Terminal VIC
2. Set feedback value after converting the feedback input level into frequency.
1) Analog input
Refer to the chapter 6 for details of analog input characteristic setting.
[Example of feedback setting]
Condition: Pressure control as PID control.
Input the feedback signal of 1 to 2 atm into VIC terminal by 4 to 20mA signal.
Feedback value
2 atm
1 atm
4mA
PID control feedback signal selection (f369)
f219
(60Hz)
f217
(0Hz)
20mA
10
: 4.1
: 4.2, 4.3
0
1
2
3
Parameter setting
(Converted frequency)
20mA
4mA
f218
f216
100%
20%
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