Toshiba TOSVERT VF-S15 Instruction Manual page 13

2. Perform the setting of feedback input level after converting it into frequency.
<Note>
Input process value needs to be less than maximum feedback value.
If the input process value is same as maximum feedback value or more, the deviation becomes
zero when the feedback value reaches maximum. The output frequency is fixed even though
actual output becomes even more higher, because the feedback value will not exceed maximum.
Upper limit of process value input can be set by parameter f367: Process upper limit.
1) fpid setting
[Example of process value setting]
Condition: Pressure control as PID control.
Input the feedback signal of 1 to 2 atm into terminal VIC by 4 to 20mA signal.
Input the process value by fpid setting.
Feedback value
2 atm
1.5 atm
1 atm
4mA
Title
fpid
Process input value of PID control
f216
VIC input point 1 setting
f217
VIC input point 1 frequency
f218
VIC input point 2 setting
f219
VIC input point 2 frequency
f389
PID control reference signal selection
Note 1) Value of fpid can be set or changed during operation with the use of setting dial, and then
saved in fpid.
Note 2) Input process value needs to be less than maximum feedback value.
2) Analog input
Refer to the chapter 6 for detail of analog input characteristic setting.
[Example of process value setting]
Condition: Pressure control as PID control.
Input the feedback signal of 1 to 2 atm into Terminal VIC by 4 to 20mA signal.
Input the process value into Terminal VIB by 0 to 10V signal.
Feedback value
(Converted frequency)
60Hz
0Hz
20mA
4mA
Function
Process value
(Converted frequency)
fpid: 30Hz (1.5 atm)
20mA
Setting (Example)
30(Hz)
20(%)
0(Hz)
100(%)
60(Hz)
3: fpid
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