109
NTT 240/460
Operation mode
Installation and user guide
Rev: 4.0
2.
PID speed setting
: parameters to set are K
P
e il K
I
.
•
set K
I
= 0
: integral action erased.
•
increase gradually K
P
until until speed resonance appears
: in this condition an evident speed error
and resonance appear in Scope visualization (besides, this condition leads to a motor unusual noise).
•
halve K
P
value
: halving K
P
, system avoids oscillation in transient conditions..
•
increase gradually K
I
: increase until misured speed variable accurately follows the desired speed
reference. In any case, K
I
parameter should not be greater than
40% of K
P
previously set.
When observing the behavior of the load corresponding to the reference changes, please keep a waveform
responce as possible without overshoot (low gain set), but also with enough performance (high gain set). Therefore
tuning is always the result of compromises between stability and performance.
Содержание NTT 240
Страница 129: ......