Applied Adjustment (For Speed Pid Control); Delay Filter; Process Increasing Rate/ Decreasing Rate - Toshiba TOSVERT VF-S15 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 radical change in deviation (primary delay control) to stabilize
the system.
Processing speed increases with the smaller setting value and decreases with the larger setting value.
(It is not necessary to change under normal conditions.)
Symbol Title
τ
f361

5.4.2. Process increasing rate/ decreasing rate

Process increasing rate/ decreasing rate (f372/ f373) determine the response of feedback value. Set
the f372 and f373 to short for quick response.
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
21
E6581879