Pid Control Function; Process Pid Control - Toshiba TOSVERT VF-S15 Instruction Manual

2. PID control function

Select one from the two types of PID control function for your application.

2.1. Process PID control

Process PID control is selected for temperature or pressure control of fan and pump which is performed
gently in response to change the speed.
[Process PID control (f360=1)]
[Diagram]
Process upper limit
（ f367 ）
Process value
Process lower limit
（ f368 ）
Feedback value
[Parameter setting]
Refer to the chapter 4 and 5 for details of parameter setting.
1) Select the input of process value and feedback value.
It is necessary to convert temperature or pressure into frequency for setting.
Item
Process value
Feedback value
Frequency free unit conversion function enables to set process value and feedback value easily.
See the chapter 3 for details.
2) Set the following parameters to suit the motor if necessary.
Title
fh
ul
ll
f270 to f275
f240
f241
PID control
－
PID forward/reverse characteristics selection
（f380）
Title
f389 PID control reference signal selection
fpid Process input value of PID control (f389=3)
f369
PID control feedback signal selection
Maximum frequency
Upper limit frequency
Lower limit frequency
Jump frequency 1 to 3
Starting frequency
Operation starting frequency
Output frequency upper limit
Jump
frequency
processing
Output frequency lower limit
Function
Function
3
E6581879
（ ul ）
Increase/
Decrease
（ acc， dec）
（ ll ）