Applied Adjustment (For Speed Pid Control); Delay Filter; Process Increasing Rate/ Decreasing Rate - Toshiba TOSVERT VF-PS1 Instruction Manual

5.4. Applied adjustment (for speed PID control)

Adjust the following for stability of speed PID control if necessary.

5.4.1. Delay filter

The delay filter set with f361 moderates changes in deviation (primary delay control).
Large setting cause processing speed delay for stability of the control.
(It is not necessary to change under normal conditions.)
Symbol Title
τ
f361

5.4.2. Process increasing rate/ decreasing rate

Set the f372 and f373 to small for quick response if necessary.
It is effective for response of feedback value.
Symbol
Process increasing rate
f372
(speed type PID control)
Process decreasing rate
f373
(speed type PID control)
Delay filter
t

 
1 e
Function
Delay filter
Increase and decrease rate
Title
Setting value
τ
f361=1.0:
=1.0（s）
Input
Output
Setting value
f372=1.0 : Increase reference from 0Hz to fh
(Maximum frequency) in 1.0 sec
f373=1.0 : Decrease reference from fh
(Maximum frequency) to 0Hz in 1.0 sec
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