Setting For Pid Control; Fundamental Setting; Feedback Value - Toshiba TOSVERT VF-PS1 Instruction Manual

4. Setting for PID control

First, set the process value and feed back value.
Then, set other parameters to suit the motor and the system if necessary.
Note) It is necessary to convert the process value and feedback value into frequency for setting.
Actual output frequency is different from setting frequency of PID control.

4.1. Fundamental setting

You need to set process value and feedback value.
In case of process type PID control and dancer control, you need to set the acceleration time and the
decceleration time to small for quick response.

4.1.1. Feedback value

Input the signal from detecter as feedback signal.
1. Select the feedback input from f360.
Description
Deviation input (no feedback input)
VI/II (voltage/current input)
RR/R4 (potentiometer/voltage input)
RX (voltage input)
Option AI1 (differential current input)
Option AI2 (voltage/current input)
PG feedback option
2. Convert the feedback input level into frequnency, and set it.
1) Analog input
See the chapter 6 for detail 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 VI/II terminal by 4 to 20mA signal.
Feedback value
2 atm
1 atm
4mA
PID control feedback control signal selection (f360)
aif2
(60Hz)
f202
(0Hz)
20mA
12
: 4.1
: 4.2, 4.3
0
1
2
3
4
5
6
Parameter setting
(Converted frequency)
20mA
4mA
f203
f201
100%
20%
E6581329①